# Patent

## Title
Antenna apparatus

## Abstract

An antenna apparatus includes a dielectric layer; a patch antenna pattern disposed on an upper surface of the dielectric layer and including an upper surface having a polygonal shape, a plurality of feed vias respectively disposed to penetrate the dielectric layer by at least a portion of a thickness of the dielectric layer, respectively disposed to be biased toward a first side and a second side, different from each other, from a center of the polygonal shape of the patch antenna pattern, and respectively disposed to be spaced apart from the patch antenna pattern, and a plurality of feed patterns respectively electrically connected to an upper end of a corresponding feed via, among the plurality of feed vias, respectively disposed to be spaced apart from the patch antenna pattern, and configured to provide a feed path to the patch antenna pattern, wherein the polygonal shape of the patch antenna pattern has a structure in which the first side and a third side between the first and second sides form an obtuse angle, and the third side and the second side form an obtuse angle.

## Background
CROSS-REFERENCE TO RELATED APPLICATIONS
This application claims the benefit under 35 USC 119(a) of Korean Patent Application No. 10-2020-0010762 filed on Jan. 30, 2020, in the Korean Intellectual Property Office, the entire disclosure of which is incorporated herein by reference for all purposes.
BACKGROUND
1. Field
The present disclosure relates to an antenna apparatus.
2. Description of the Background
Data traffic for mobile communications is increasing rapidly every year. Technological development is underway to support the transmission of such rapidly increased data in real time in wireless networks. For example, the contents of internet of things (IoT) based data, augmented reality (AR), virtual reality (VR), live VR/AR combined with social network service (SNS), autonomous navigation, applications such as Sync View (real-time video user transmissions using ultra-small cameras), and the like may require communications (e.g., 5G communications, mmWave communications, etc.) supporting the transmission and reception of large amounts of data.
Millimeter wave (mmWave) communications, including 5th generation (5G) communications, have been researched, and research into the commercialization/standardization of an antenna apparatus for smoothly realizing such communications is progressing.
Since radio frequency (RF) signals in high frequency bands (e.g., 24 GHz, 28 GHz, 36 GHz, 39 GHz, 60 GHz, etc.) are easily absorbed and lost in the course of the transmission thereof, the quality of communications may be dramatically reduced. Therefore, antennas for communications in high frequency bands may require different approaches from those of conventional antenna technology, and a separate approach may require further special technologies, such as implementing separate power amplifiers for securing antenna gain, integrating an antenna and radio frequency integrated circuit (RFIC), securing effective isotropic radiated power (EIRP), and the like.
The above information is presented as background information only to assist with an understanding of the present disclosure. No determination has been made, and no assertion is made, as to whether any of the above might be applicable as prior art with regard to the disclosure.
SUMMARY
This Summary is provided to introduce a selection of concepts in a simplified form that are further described below in the Detailed Description. This Summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.
In one general aspect, an antenna apparatus includes a dielectric layer, a patch antenna pattern disposed above an upper surface of the dielectric layer and including an upper surface having a polygonal shape, a plurality of feed vias respectively disposed to penetrate the dielectric layer by at least a portion of a thickness of the dielectric layer, respectively disposed to be biased toward a first side and a second side, different from each other, from a center of the polygonal shape of the patch antenna pattern, and respectively disposed to be spaced apart from the patch antenna pattern, and a plurality of feed patterns respectively electrically connected to an upper end of a corresponding feed via, among the plurality of feed vias, respectively disposed to be spaced apart from the patch antenna pattern, and configured to provide a feed path to the patch antenna pattern, wherein the polygonal shape of the patch antenna pattern has a structure in which the first side and a third side between the first and second sides form an obtuse angle, and the third side and the second side form an obtuse angle.
At least a portion of each of the plurality of feed patterns may be coiled.
Each of the plurality of feed patterns may include a first coiled feed pattern comprising one end electrically connected to the corresponding feed via, among the plurality of feed vias, an inductive via comprising one end electrically connected to the other end of the first coiled feed pattern, and a second feed pattern comprising one end electrically connected to the other end of the inductive via and disposed to comprise at least a portion overlapping the first coiled feed pattern in a vertical direction.
The patch antenna pattern may be disposed such that the first and second sides overlap the plurality of feed patterns in the vertical direction.
A length of the third side in the patch antenna pattern may be different from a length of each of the first and second sides in the patch antenna pattern.
The upper surface of the patch antenna pattern may have an octagonal shape, and the length of the third side may be shorter than the length of each of the first and second sides.
The patch antenna pattern may be disposed such that the first and second sides are oblique to each side of the upper surface of the dielectric layer.
The antenna apparatus may further include a plurality of extended patch antenna patterns respectively disposed to be spaced apart from the plurality of feed patterns, respectively disposed to be biased toward the first side and the second side from the center of the polygonal shape of the patch antenna pattern, and respectively disposed to be spaced apart from the patch antenna pattern.
The plurality of feed vias may be arranged to overlap at least one of the plurality of extended patch antenna patterns and the patch antenna pattern in a vertical direction.
Each of the plurality of extended patch antenna patterns may include a second extended patch antenna pattern and a first extended patch antenna pattern disposed to be spaced apart from the second extended patch antenna pattern and disposed between the second extended patch antenna pattern and the patch antenna pattern.
The antenna apparatus may further include a plurality of first dummy patterns respectively having a polygonal shape and arranged three-dimensionally between the plurality of feed patterns on a level between the patch antenna pattern and the plurality of feed patterns.
In another general aspect, an antenna apparatus includes a ground plane, a patch antenna pattern disposed above an upper surface of the ground plane and including an upper surface having a polygonal shape, a plurality of feed vias respectively disposed to penetrate the ground plane, respectively disposed to be biased toward a first side and a second side, different from each other, from a center of the polygonal shape of the patch antenna pattern, and respectively disposed to be spaced apart from the patch antenna pattern, a plurality of feed patterns respectively electrically connected to an upper end of a corresponding feed via, among the plurality of feed vias, respectively disposed to be spaced apart from the patch antenna pattern, and configured to provide a feed path to the patch antenna pattern, and a plurality of first dummy patterns respectively having a polygonal shape and arranged three-dimensionally between the plurality of feed patterns on a level between the patch antenna pattern and the plurality of feed patterns.
The antenna apparatus may further include a plurality of second dummy patterns respectively comprising a polygonal shape and arranged three-dimensionally to surround a space in which the plurality of first dummy patterns are arranged, wherein a space between the plurality of feed patterns on a level between the patch antenna pattern and the plurality of feed patterns is surrounded by the plurality of first dummy patterns and the plurality of second dummy patterns.
A side of each of the plurality of first dummy patterns may be oblique to a side of each of the plurality of second dummy patterns.
At least a portion of each of the plurality of feed patterns may be coiled.
In another general aspect, an antenna apparatus includes a dielectric layer, a patch antenna pattern disposed above an upper surface of the dielectric layer and including an upper surface having a polygonal shape, a plurality of feed vias respectively disposed to penetrate the dielectric layer by at least a portion of a thickness of the dielectric layer, respectively disposed to be biased toward a first side and a second side, different from each other, from a center of the polygonal shape of the patch antenna pattern, and respectively disposed to be spaced apart from the patch antenna pattern, a plurality of feed patterns respectively electrically connected to an upper end of a corresponding feed via, among the plurality of feed vias, respectively disposed to be spaced apart from the patch antenna pattern, and configured to provide a feed path to the patch antenna pattern, and a plurality of extended patch antenna patterns respectively disposed to be spaced apart from the plurality of feed patterns, respectively disposed to be biased toward the first side and the second side from the center of the polygonal shape of the patch antenna pattern, and respectively disposed to be spaced apart from the patch antenna pattern, wherein at least a portion of the plurality of feed patterns is disposed to overlap a corresponding extended patch antenna pattern, among the plurality of extended patch antenna patterns, in a vertical direction, and is coiled.
Each of the plurality of extended patch antenna patterns may include a second extended patch antenna pattern, and a first extended patch antenna pattern disposed to be spaced apart from the second extended patch antenna pattern and disposed between the second extended patch antenna pattern and the patch antenna pattern, wherein a width of the second extended patch antenna pattern may be different from a width of the first extended patch antenna pattern.
Each of the plurality of extended patch antenna patterns may include a second extended patch antenna pattern, and a first extended patch antenna pattern disposed to be spaced apart from the second extended patch antenna pattern and disposed between the second extended patch antenna pattern and the patch antenna pattern, wherein the upper surface of the patch antenna pattern may have an octagonal shape, the number of the first extended patch antenna pattern may be less than 8, and the number of the second extended patch antenna pattern may be less than 8.
An upper surface of each of the first and second extended patch antenna patterns may have a rectangular shape.
Sides of the rectangular shape of each of the first and second extended patch antenna patterns may be oblique to each side of the upper surface of the dielectric layer.
The upper surface of the patch antenna pattern may have a rectangular shape, and the first and second sides of the patch antenna pattern may be oblique to each side of the upper surface of the dielectric layer.
Other features and aspects will be apparent from the following detailed description, the drawings, and the claims.



BRIEF DESCRIPTION OF DRAWINGS
FIGS. 1A to 1F are perspective views illustrating antenna apparatuses according to embodiments of the present disclosure.
FIGS. 2A to 2C are cross-sectional views illustrating antenna apparatuses according to embodiments of the present disclosure.
FIG. 3A is a plan view illustrating an antenna apparatus according to an embodiment of the present disclosure.
FIG. 3B is a plan view illustrating dimensions of an antenna apparatus according to an embodiment of the present disclosure.
FIG. 3C is a plan view illustrating a structure in which a patch antenna pattern is omitted in an antenna apparatus according to an embodiment of the present disclosure.
FIG. 3D is a plan view illustrating a modified structure of a patch antenna pattern of an antenna apparatus according to an embodiment of the present disclosure.
FIGS. 4A and 4B are perspective views illustrating feed patterns and feed vias of antenna apparatuses according to embodiments of the present disclosure.
FIG. 5A is a plan view illustrating an arrangement of a plurality of antenna apparatuses according to an embodiment of the present disclosure.
FIG. 5B is a cross-sectional view illustrating an arrangement of a plurality of antenna apparatuses according to an embodiment of the present disclosure.
FIGS. 6A and 6B are side views illustrating connection members in which a ground plane is stacked, and lower structures thereof, included in antenna apparatuses according to embodiments of the present disclosure.
FIGS. 7A and 7B are plan views illustrating an arrangement of antenna apparatuses according to embodiments of the present disclosure, in an electronic device.



Throughout the drawings and the detailed description, the same reference numerals refer to the same elements. The drawings may not be to scale, and the relative size, proportions, and depiction of elements in the drawings may be exaggerated for clarity, illustration, and convenience.
DETAILED DESCRIPTION
The following detailed description is provided to assist the reader in gaining a comprehensive understanding of the methods, apparatuses, and/or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatuses, and/or systems described herein will be apparent after an understanding of this disclosure. For example, the sequences of operations described herein are merely examples, and are not limited to those set forth herein, but may be changed as will be apparent after an understanding of this disclosure, with the exception of operations necessarily occurring in a certain order. Also, descriptions of features that are known in the art may be omitted for increased clarity and conciseness.
The features described herein may be embodied in different forms, and are not to be construed as being limited to the examples described herein. Rather, the examples described herein have been provided merely to illustrate some of the many possible ways of implementing the methods, apparatuses, and/or systems described herein that will be apparent after an understanding of this disclosure.
Throughout the specification, when an element, such as a layer, region, or substrate, is described as being “on,” “connected to,” or “coupled to” another element, it may be directly “on,” “connected to,” or “coupled to” the other element, or there may be one or more other elements intervening therebetween. In contrast, when an element is described as being “directly on,” “directly connected to,” or “directly coupled to” another element, there can be no other elements intervening therebetween. As used herein “portion” of an element may include the whole element or less than the whole element.
As used herein, the term “and/or” includes any one and any combination of any two or more of the associated listed items; likewise, “at least one of” includes any one and any combination of any two or more of the associated listed items.
Although terms such as “first,” “second,” and “third” may be used herein to describe various members, components, regions, layers, or sections, these members, components, regions, layers, or sections are not to be limited by these terms. Rather, these terms are only used to distinguish one member, component, region, layer, or section from another member, component, region, layer, or section. Thus, a first member, component, region, layer, or section referred to in examples described herein may also be referred to as a second member, component, region, layer, or section without departing from the teachings of the examples.
Spatially relative terms, such as “above,” “upper,” “below,” “lower,” and the like, may be used herein for ease of description to describe one element's relationship to another element as shown in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, an element described as being “above,” or “upper” relative to another element would then be “below,” or “lower” relative to the other element. Thus, the term “above” encompasses both the above and below orientations depending on the spatial orientation of the device. The device may be also be oriented in other ways (rotated 90 degrees or at other orientations), and the spatially relative terms used herein are to be interpreted accordingly.
The terminology used herein is for describing various examples only, and is not to be used to limit the disclosure. The articles “a,” “an,” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms “comprises,” “includes,” and “has” specify the presence of stated features, numbers, operations, members, elements, and/or combinations thereof, but do not preclude the presence or addition of one or more other features, numbers, operations, members, elements, and/or combinations thereof.
The features of the examples described herein may be combined in various ways as will be apparent after an understanding of this disclosure. Further, although the examples described herein have a variety of configurations, other configurations are possible as will be apparent after an understanding of this disclosure.
Herein, it is noted that use of the term “may” with respect to an example, for example, as to what an example may include or implement, means that at least one example exists in which such a feature is included or implemented while all examples are not limited thereto.
An aspect of the present disclosure is to provide an antenna apparatus.
FIG. 1A is a perspective view illustrating an antenna apparatus according to an embodiment of the present disclosure, FIG. 1B is a perspective view illustrating a structure in which a patch antenna pattern is omitted in an antenna apparatus according to an embodiment of the present disclosure, FIG. 3A is a plan view illustrating an antenna apparatus according to an embodiment of the present disclosure, FIG. 3B is a plan view illustrating dimensions of an antenna apparatus according to an embodiment of the present disclosure, and FIG. 3C is a plan view illustrating a structure in which a patch antenna pattern is omitted in an antenna apparatus according to an embodiment of the present disclosure.
Referring to FIGS. 1A and 3A, an antenna apparatus 100a according to an embodiment of the present disclosure may include a patch antenna 110a and a feed via 120a, and may further include at least one of a plurality of dummy patterns 140a, a connection member 200a, and a ground plane 201a. The patch antenna 110a may include a patch antenna pattern 111a, and may further include at least one of a first extended patch antenna pattern 112a, a second extended patch antenna pattern 114a, and a third extended patch antenna pattern 113a. 
Referring to FIGS. 1B and 3C, an antenna apparatus 100b according to an embodiment of the present disclosure may include a feed pattern 130a, and may further include at least one of a plurality of dummy patterns 140a, a connection member 200a, and a ground plane 201a. 
A patch antenna pattern 111a may be disposed above an upper surface of the ground plane 201a. The patch antenna pattern 111a may be configured to have a main resonant frequency, and may remotely transmit or remotely receive a radio frequency (RF) signal, close to the main resonant frequency.
When the RF signal is remotely transmitted and received, most of a surface current corresponding to the RF signal may flow through an upper surface and a lower surface of the patch antenna pattern 111a. The surface current may form an electric field in a first horizontal direction that may be the same as a direction of the surface current, and may form a magnetic field in a second horizontal direction, perpendicular to the direction of the surface current. Most of the RF signals may propagate through air or dielectric layers in a vertical direction (e.g., a z direction), perpendicular to the first and second horizontal directions.
Therefore, a radiation pattern of the patch antenna pattern 111a may be intensively formed in a normal direction (e.g., the z direction) of the upper and lower surfaces of the patch antenna pattern 111a. Gain of the patch antenna pattern 111a may be improved, as concentration of the radiation pattern of the patch antenna pattern 111a increases.
Since the ground plane 201a may reflect the RF signal to support the concentration of the radiation pattern of the patch antenna pattern 111a, the gain of the patch antenna pattern 111a may further increase, and may support formation of impedance corresponding to the main resonant frequency of the patch antenna pattern 111a. 
The surface current flowing in the patch antenna pattern 111a may be formed based on a feed path provided to the patch antenna pattern 111a. The feed path may extend from the patch antenna pattern 111a to an integrated circuit (IC), and may be a transmission path of the RF signal. The IC may perform at least one of amplification, frequency conversion, phase control, and filtering on a received RF signal, or may perform at least one of amplification, frequency conversion, phase control, and filtering on the received RF signal, to generate an RF signal to be transmitted.
A feed via 120a may provide a feed path to the patch antenna pattern 111a. The feed via 120a may be disposed to penetrate the ground plane 201a and/or a dielectric layer, and may be spaced apart from a patch antenna pattern 111a. 
For example, the feed via 120a may be disposed so as not to contact the patch antenna pattern 111a. Therefore, since a portion of the feed via 120a, close to the patch antenna pattern 111a, may be designed more freely, additional impedance may be provided by the patch antenna pattern 111a 
At least one additional resonant frequency, corresponding to the additional impedance, may widen a bandwidth of the patch antenna pattern 111a to be passed. A width of the bandwidth may be determined, based on appropriateness of a difference in frequency between the at least one additional resonant frequency and the main resonant frequency, and the number of additional resonance frequencies, close to the main resonant frequency, among the at least one additional resonance frequency.
As a degree of freedom in design of the portion of the feed via 120a, close to the patch antenna pattern 111a, increases, the appropriateness and/or number of the at least one additional resonant frequency may be improved more efficiently.
Therefore, the feed via 120a may provide a non-contact feed path to the patch antenna pattern 111a, to improve the bandwidth of the patch antenna pattern 111a more efficiently.
The feed pattern 130a may be electrically connected to an upper end of the feed via 120a, may be spaced apart from the patch antenna pattern 111a, and may provide a feed path to the patch antenna pattern 111a. 
For example, the feed via 120a may use a relatively high degree of freedom in design of the portion of the feed via 120a, close to the patch antenna pattern 111a, to have an arrangement space of the feed pattern 130a. 
The feed pattern 130a may be provided as a plurality of feed patterns 130a spaced apart from each other.
The feed via 120a may be provided as a plurality of feed vias 120a, which may be respectively disposed to be biased toward a first side and a second side, different from each other, from a center of a polygonal shape of the patch antenna pattern 111a, and respectively disposed to be spaced apart from the patch antenna pattern 111a. The plurality of feed vias 120a may be electrically connected to the plurality of feed patterns 130a. 
Therefore, a first surface current formed based on one feed via of the plurality of feed vias 120a, and a second surface current formed based on the other one feed via of the plurality of feed vias 120a may flow on the upper and lower surfaces of the patch antenna pattern 111a in different first and second horizontal directions.
Since the first and second horizontal directions are different from each other, at least a portion of a first RF signal propagated based on the first surface current, and at least a portion of a second RF signal propagated based on the second surface current may be orthogonal to each other, and the patch antenna pattern 111a may remotely transmit and/or receive the first and second RF signals together.
The higher the orthogonality between the first and second RF signals, the higher the overall gain of the patch antenna pattern 111a for the first and second RF signals.
Since the plurality of feed vias 120a and the plurality of feed patterns 130a are respectively spaced apart from the patch antenna pattern 111a, influence on each other in providing the feed paths of the plurality of feed patterns 130a for the patch antenna patterns 111a may serve as a design factor for improving orthogonality between the first and second RF signals.
For example, the lower the influence on each other in providing the feed paths of the plurality of feed patterns 130a for the patch antenna patterns 111a, the higher orthogonality between the first and second RF signals.
First, referring to FIGS. 1A and 3B, the polygonal shape of the patch antenna pattern 111a may have a structure in which a first side (S1) and a second side (S2), different from each other, and a third side (S3) connecting the different first and second sides (S1 and S2) form a plurality of obtuse angles (A1 and A2).
Sides of the polygonal shape of the patch antenna pattern 111a may cause an increase in a z direction vector component of the electric and/or magnetic fields due to a fringing phenomenon, and vertices of the polygonal shape of the patch antenna pattern 111a may serve as a point in which a first horizontal vector component of the first RF signal based on the one feed via of the plurality of feed vias 120a, and a second horizontal vector component of the second RF signal based on the other one feed via of the plurality of feed vias 120a meet. Therefore, the vertices may act as interference elements of the first and second RF signals to each other.
Since a first vertex corresponding to the first horizontal direction vector component, and a second vertex corresponding to the second horizontal direction vector component may be arranged to be spaced apart from each other by the third side (S3) of the patch antenna pattern 111a, connecting the different first and second sides (S1 and S2), the interference elements of the first and second RF signals with respect to each other may be reduced, to increase the overall gain of the patch antenna pattern 111a for the first and second RF signals.
In addition, since the plurality of obtuse angles (A1 and A2) formed by the different first and second sides (S1 and S2) and the third side (S3) connecting the different first and second sides (S1 and S2) may be closer to 180 degrees, not perpendicular to each other, the first and second horizontal vector components may be reduced, to further increase the overall gain of the patch antenna pattern 111a for the first and second RF signals.
For example, at least a portion of the patch antenna pattern 111a may have an octagonal shape. Therefore, since a structure including the plurality of obtuse angles (A1 and A2) formed by the different first and second sides (S1 and S2) and the third side (S3) connecting the different first and second sides (S1 and S2) may be more easily implemented, may easily provide an electromagnetic design element according to control of angles of the plurality of obtuse angles (A1 and A2), and may easily provide an electromagnetic design element according to control of a length of each of the different first and second sides (S1 and S2) and the third side (S3) connecting the different first and second sides (S1 and S2), antenna performance (e.g., gain, bandwidth, etc.) of the patch antenna pattern 111a may be improved efficiently, compared to a size of the patch antenna pattern 111a. 
For example, a length (L2) of the third side (S3) of the patch antenna pattern 111a, connecting the different first and second sides (S1 and S2), may be shorter than a length (L1) of each of the different first and second sides (S1 and S2).
Therefore, an optimal feeding position for matching the impedance of a feed path of the patch antenna pattern 111a may be further biased to the different first and second sides (S1 and S2) from the center of the patch antenna pattern 111a. Therefore, positions of the plurality of feed vias 120a may be further biased to the different first and second sides (S1 and S2) from the center of the patch antenna patterns 111a, a distance between the plurality of feed patterns 130a may be longer, electromagnetic isolation between the plurality of feed patterns 130a may be higher, orthogonality between the first and second RF signals may be further improved, and overall gain of the patch antenna patterns 111a for the first and second RF signals may be further improved.
For example, when a length of each of the different first and second sides (S1 and S2) is longer than a length of the third side (S3) connecting the different first and second sides (S1 and S2), the different first and second sides (S1 and S2) may be oblique (for example, an angle difference of 45 degrees) to each side of an upper surface of the ground plane 201a or an upper surface of a dielectric layer.
A plurality of antenna apparatuses may be arranged parallel to each side of the upper surface of the ground plane 201a or the upper surface of the dielectric layer, the surface current may flow in a direction of the plurality of feed vias 120a, biased from the center of the patch antenna patterns 111a. When the different first and second sides (S1 and S2) are oblique to each side of the upper surface of the ground plane 201a or the upper surface of the dielectric layer, the direction of the surface current of the patch antenna pattern 111a may be different from a direction facing an adjacent antenna apparatus. Therefore, electromagnetic isolation between the plurality of antenna apparatuses may be further improved, and overall gain and/or directivity of the plurality of antenna apparatuses may be further improved.
Second, referring to FIGS. 1B and 3C, the antenna apparatuses 100a and 100b according to an embodiment of the present disclosure may further include a plurality of first dummy patterns 141a respectively having a polygonal shape and arranged three-dimensionally between a plurality of spaces between the patch antenna pattern 111a and the plurality of feed patterns 130a. 
The plurality of spaces between the patch antenna pattern 111a and the plurality of feed patterns 130a may serve as a feed path of the plurality of feed patterns 130a. 
Since the plurality of first dummy patterns 141a are arranged three-dimensionally between the plurality of spaces, concentration of feeding of each of the plurality of feed patterns 130a for the patch antenna patterns 111a may be further increased.
In addition, since the plurality of first dummy patterns 141a may not substantially affect formation of radiation pattern of the patch antenna pattern 111a, concentration of feeding of each of the plurality of feed patterns 130a may increase without adversely affecting the gain of the patch antenna pattern 111a. 
Therefore, orthogonality between the first and second RF signals may be further improved, and overall gain of the patch antenna pattern 111a for the first and second RF signals may be further increased.
For example, an effective distance between the patch antenna pattern 111a and the ground plane 201a may affect the radiation pattern of the patch antenna pattern 111a, and the plurality of first dummy patterns 141a may not have a substantial effect on the effective distance.
The antenna apparatus 100a according to an embodiment of the present disclosure may further include a plurality of second dummy patterns 142a respectively having a polygonal shape and arranged three-dimensionally to surround a space in which the plurality of first dummy patterns 141a are arranged.
The plurality of spaces between the patch antenna pattern 111a and the plurality of feed patterns 130a may be surrounded by the plurality of first and second dummy patterns 141a and 142a. 
Therefore, concentration of feeding of the plurality of feed patterns 130a may be further increased, orthogonality between the first and second RF signals may be further improved, and overall gain of the patch antenna pattern 111a for the first and second RF signals may be further increased.
For example, each of the plurality of first dummy patterns 141a may be disposed to have a side (S4) that is oblique (for example, an angle difference of 45 degrees) to each side (S5) of the plurality of second dummy patterns 142a. 
Therefore, the plurality of first dummy patterns 141a may be arranged in a direction biased to the plurality of feed patterns 130a from the center of the patch antenna pattern 111a, and the plurality of second dummy patterns 142a may be arranged in a direction, parallel or perpendicular to a direction of each side of the upper surface of the ground plane 201a or the upper surface of the dielectric layer. Therefore, since the plurality of spaces between the patch antenna pattern 111a and the plurality of feed patterns 130a may have a relatively long length in a direction in which the plurality of feed vias 120a are biased from the center of the patch antenna pattern 111a, electromagnetic design elements may be easily provided according to control of the position of the plurality of feed vias 120a. In addition, since a control range of the position of the plurality of feed vias 120a may be further widened, antenna performance (e.g., gain, bandwidth, etc.) of the patch antenna pattern 111a may be improved efficiently, compared to a size of the patch antenna pattern 111a. 
Third, at least a portion of the plurality of feed patterns 130a may be disposed to overlap a corresponding extended patch antenna pattern, among the plurality of extended patch antenna patterns 112a and 114a, in a vertical direction, and may be coiled.
First and second coiling currents, corresponding to first and second RF signals transmitted through the plurality of feed patterns 130a, may flow through the plurality of feed patterns 130a. The first and second coiling currents may rotate corresponding to a coiling direction of a coiled portion of each of the plurality of feed patterns 130a. 
Therefore, since self-inductance of the plurality of feed patterns 130a may be boosted, the plurality of feed patterns 130a may have relatively large inductance.
The plurality of feed patterns 130a may have relatively high impedance, compared to a size of the plurality of feed patterns 130a. In addition, even when an area of the plurality of feed patterns 130a overlapping the patch antenna pattern 111a in the vertical direction is relatively small, the plurality of feed patterns 130a may have sufficient impedance.
Therefore, a distance between the plurality of feed patterns 130a may be more easily lengthened, concentration of feeding of each of the plurality of feed patterns 130a may be increased, and overall gain of the patch antenna pattern 111a for the first and second RF signals may be further increased.
Each of the plurality of first and second extended patch antenna patterns 112a and 114a may be disposed to be spaced apart from the plurality of feed patterns 130a, may be disposed to be biased toward different first and second sides from the center of the polygonal shape of the patch antenna pattern 111a, and may be disposed to be spaced apart from the patch antenna pattern 111a. 
Since the plurality of first and second extended patch antenna patterns 112a and 114a may form additional impedance together with the patch antenna pattern 111a, a bandwidth of the patch antenna pattern 111a may be widened.
In this case, the plurality of feed patterns 130a may be arranged to overlap at least one of corresponding first and second extended patch antenna patterns, among the plurality of first and second extended patch antenna patterns 112a and 114a. 
Therefore, a distance between the plurality of feed patterns 130a below the patch antenna pattern 111a may be more easily lengthened, concentration of feeding of each of the plurality of feed patterns 130a may be increased, and overall gain of the patch antenna pattern 111a for the first and second RF signals may be further increased.
For example, the plurality of feed patterns 130a may be arranged such that different first and second sides (S1 and S2) of the patch antenna pattern 111a overlap the plurality of feed patterns 130a in the vertical direction.
Therefore, since concentration of feeding of the plurality of feed patterns 130a may be further increased, and a control range of capacitance formed by the plurality of feed patterns 130a and the patch antenna 110a may be further widened, the patch antenna 110a may have a wider bandwidth.
For example, the number of each of the plurality of first, second, and third extended patch antenna patterns 112a, 114a, and 113a may be less than eight. The number of each of the plurality of first, second, and third extended patch antenna patterns 112a, 114a, and 113a may be less than the number of sides of the patch antenna pattern 111a. The plurality of first, second, and third extended patch antenna patterns 112a, 114a, and 113a may be arranged to be more concentrated in a direction in which the plurality of feed vias 120a are biased from the center of the patch antenna pattern 111a. Therefore, concentration of feeding of the plurality of feed patterns 130a for the patch antennas 110a may be further increased.
For example, referring to FIG. 3B, each of the plurality of first, second, and third extended patch antenna patterns 112a, 114a, and 113a may have a width shorter than a length (L3), and a width (W2) of the first extended patch antenna pattern 112a, a width (W3) of the second extended patch antenna pattern 114a, and a width (W4) of the third extended patch antenna pattern 113a may all be different from each other. Therefore, since diversity in control of capacitance formed by the plurality of feed patterns 130a and the patch antenna 110a may be further increased, a bandwidth of the patch antenna 110a may be more easily improved.
For example, directions of the length (L3) and the widths (W2, W3, and W4) of the plurality of first, second, and third extended patch antenna patterns 112a, 114a, and 113a may be oblique (for example, an angle difference of 45 degrees) to each side of the upper surface of the ground plane 201a, or the upper surface of the dielectric layer. Therefore, since an arrangement space of the plurality of first, second, and third extended patch antenna patterns 112a, 114a, and 113a may be sufficient, the plurality of first, second, and third extended patch antenna patterns 112a, 114a, and 113a may be designed more freely, and the bandwidth of the patch antenna 110a may be improved more easily.
FIGS. 10 to 1E are perspective views illustrating antenna apparatuses according to embodiments of the present disclosure, FIG. 2B is a cross-sectional view illustrating an antenna apparatus according to an embodiment of the present disclosure, and FIG. 3D is a plan view illustrating an antenna apparatus according to an embodiment of the present disclosure.
Referring to FIG. 10, an antenna apparatus 100c according to an embodiment of the present disclosure may have a structure in which a plurality of first dummy patterns are omitted, and may have a structure in which a plurality of feed vias 120a and a plurality of feed patterns 130a efficiently provide a feed path to a patch antenna.
Referring to FIGS. 1D and 2B, an antenna apparatus 100d according to an embodiment of the present disclosure may have a structure in which a plurality of second dummy patterns are further omitted, may have a structure in which a plurality of feed vias 120a-1 and 120a-2 and a plurality of feed patterns 130a-1 and 130a-2 efficiently provide a feed path to the patch antenna, and may have a structure in which the plurality of feed patterns 130a-1 and 130a-2 are arranged to be spaced apart from each other by a predesigned gap (G1).
Referring to FIG. 1E, an antenna apparatus 100e according to an embodiment of the present disclosure may have a structure in which a plurality of extended patch antenna patterns are omitted, and may have a structure in which a plurality of feed vias 120a and a plurality of feed patterns efficiently provide a feed path to a patch antenna pattern 111a. 
Referring to FIGS. 1F and 3D, an antenna apparatus 100f according to an embodiment of the present disclosure may have a structure in which a patch antenna pattern 111b having a rectangular shape may be included, and concentration of feeding thereof may be improved according to a plurality of first and second dummy patterns 141a and 142a, and may have a structure in which concentration of feeding thereof may be improved according to positions and/or shapes of the plurality of feed patterns.
FIGS. 2A and 2C are cross-sectional views illustrating antenna apparatuses according to embodiments of the present disclosure.
Referring to FIG. 2A, a connection member 200a may be disposed below a dielectric layer 190a. A patch antenna 110a, a plurality of feed patterns 130a, and a plurality of dummy patterns 140a may be arranged on the dielectric layer 190a. A plurality of feed vias 120a may be disposed to penetrate the dielectric layer 190a by at least a portion of a thickness of the dielectric layer 190a in the vertical direction (e.g., the z direction).
For example, a plurality of insulating layers may be disposed on a level between the patch antenna 110a, the plurality of feed patterns 130a, and the plurality of dummy patterns 140a on the dielectric layer 190a, and may also be disposed below a ground plane 201a of the connection member 200a. 
Conductive layers may be arranged on a portion of upper and/or lower surfaces of the plurality of insulating layers according to a predesigned pattern, and the predesigned pattern may be implemented with the patch antenna 110a, the plurality of feed patterns 130a, and the plurality of dummy patterns 140a. For example, the plurality of feed patterns 130a may be arranged on the portion of upper and/or lower surfaces of the plurality of insulating layers according to a predetermined gap (G1).
A via may extend in the vertical direction (e.g., the z direction) to penetrate the plurality of insulating layers, and may provide an electrical connection path between the plurality of insulating layers. The feed pattern 130a may have a three-dimensional structure by including the via.
For example, the via may be formed by filling a conductive material in a state from which a portion of the plurality of insulating layers is removed, and may be formed according to a method of forming the via in a conventional printed circuit board (PCB).
Referring to FIG. 2C, an antenna apparatus 100g according to an embodiment of the present disclosure may have a structure in which a plurality of feed patterns 130b-1 and 130b-2, not including a via, are included, and the plurality of feed patterns 130b-1 and 130b-2 efficiently provide a feed path to a patch antenna 110a. 
FIGS. 4A and 4B are perspective views illustrating feed patterns and feed vias of antenna apparatuses according to embodiments of the present disclosure.
Referring to FIG. 4A, a feed pattern 130a may include at least one of a first feed pattern 131a, an inductive via 132a, a second feed pattern 133a, and an extension portion 134a. 
One end of the first feed pattern 131a may be disposed to be electrically connected to a feed via 120a, one end of the inductive via 132a may be disposed to be electrically connected to the other end of the first feed pattern 131a, and one end of the second feed pattern 133a may be disposed to be electrically connected to the other end of the inductive via 132a and at least partially overlap the first feed pattern 131a in the vertical direction.
Therefore, since the plurality of feed patterns 130a may have relatively high impedance, compared to a size of the plurality of feed patterns 130a, concentration of feeding of each of the plurality of feed patterns 130a may be further improved.
The extension portion 134a may be electrically connected to the other end of the second feed pattern 133a, and may extend toward a center of a patch antenna pattern by an extension length (L5). Since the extension length (L5) of the extension portion 134a and a width (W5) of the second feed pattern 133a may affect impedance of the feed pattern 130a, it may serve as a bandwidth design element of a patch antenna.
The feed via 120a may include at least one of a 1-1-th electricity feed portion 121a, a 1-2-th electricity feed portion 122a, a 1-3-th electricity feed portion 123a, a 1-4-th electricity feed portion 124a, and a 1-5-th electricity feed portion 125a, and may be spaced apart from a ground plane 201a. 
The 1-5-th electricity feed portion 125a may be implemented as a via, and may extend below the ground plane 201a. 
The 1-4-th electricity feed portion 124a may extend in a horizontal direction different from an extending horizontal direction of the extending part 134a, and may be surrounded by a plurality of shielding vias 245a. The plurality of shielding vias 245a may be electrically connected to the ground plane 201a, and may extend in a downward direction.
Referring to FIG. 4B, a feed pattern may have a structure in which an inductive via, a second feed pattern, and an extension portion are omitted, and a first feed pattern 131a is included, and may be electrically connected to a feed via 120a. Since a width (W6) of a first feed pattern 131a may affect impedance of a feed pattern 130a, it may serve as a bandwidth design element of a patch antenna.
FIG. 5A is a plan view illustrating an arrangement of a plurality of antenna apparatuses according to an embodiment of the present disclosure, and FIG. 5B is a cross-sectional view illustrating an arrangement of a plurality of antenna apparatuses according to an embodiment of the present disclosure.
Referring to FIGS. 5A and 5B, a plurality of antenna apparatuses 100a-1, 100a-2, 100a-3, and 100a-4 according to an embodiment of the present disclosure may be arranged in the x direction, and may be arranged above a ground plane 201a. The ground plane 201a may be included in a connection member 200a. 
A shielding structure 180a may be disposed to interpose the plurality of antenna apparatuses 100a-1, 100a-2, 100a-3, and 100a-4. An IC 300a may be disposed below the connection member 200a. The IC 300a may be electrically connected to a wiring of the connection member 200a to transmit or receive an RF signal, and may be electrically connected to a ground plane of the connection member 200a to receive a ground. For example, the IC 300a may perform at least a portion of frequency conversion, amplification, filtering, phase control, and power generation to generate a converted signal.
FIGS. 6A and 6B are side views illustrating connection members in which a ground plane is stacked, and lower structures thereof, included in antenna apparatuses according to embodiments of the present disclosure.
Referring to FIG. 6A, an antenna apparatus according to an embodiment of the present disclosure may include at least a portion of a connection member 200, an IC 310, an adhesive member 320, an electrical connection structure 330, an encapsulant 340, a passive component 350, and a sub-substrate 410.
The connection member 200 may have a structure in which the plurality of ground planes described above are stacked.
The IC 310 may be the same as the above-described IC, and may be disposed below the connection member 200. The IC 310 may be electrically connected to a wiring of the connection member 200 to transmit or receive an RF signal, and may be electrically connected to a ground plane of the connection member 200 to receive a ground. For example, the IC 310 may perform at least a portion of frequency conversion, amplification, filtering, phase control, and power generation to generate a converted signal.
The adhesive member 320 may bond the IC 310 and the connection member 200 to each other.
The electrical connection structure 330 may electrically connect the IC 310 and the connection member 200. For example, the electrical connection structure 330 may have a structure such as a solder ball, a pin, a land, and a pad. The electrical connection structure 330 may have a lower melting point than the wiring and the ground plane of the connection member 200, to electrically connect the IC 310 and the connection member 200 through a predetermined process using the lower melting point.
The encapsulant 340 may encapsulate at least a portion of the IC 310, and may improve heat dissipation performance and impact protection performance of the IC 310. For example, the encapsulant 340 may be implemented with a photo imageable encapsulant (PIE), an Ajinomoto build-up film (ABF), an epoxy molding compound (EMC), or the like.
The passive component 350 may be disposed on a lower surface of the connection member 200, and may be electrically connected to the wiring and/or the ground plane of the connection member 200 through the electrical connection structure 330.
The sub-substrate 410 may be disposed below the connection member 200, and may be electrically connected to the connection member 200, to receive an intermediate frequency (IF) signal or a base band signal from an external source and transmit the received IF signal or the received base band signal to the IC 310, or receive an IF signal or a base band signal from the IC 310 to transmit the received IF signal or the received base band signal to the external source. In this case, a frequency (e.g., 24 GHz, 28 GHz, 36 GHz, 39 GHz, or 60 GHz) of an RF signal may be greater than a frequency (e.g., 2 GHz, 5 GHz, 10 GHz, etc.) of an IF signal.
For example, the sub-substrate 410 may transmit or receive an IF signal or a base band signal to or from the IC 310 through a wiring that may be included in an IC ground plane of the connection member 200. Since a first ground plane of the connection member 200 is disposed between the IC ground plane and the wiring, the IF signal or the base band signal and the RF signal may be electrically isolated.
Referring to FIG. 6B, an antenna apparatus according to an embodiment of the present disclosure may include at least a portion of a shielding member 360, a connector 420, and a chip end-fire antenna 430.
The shielding member 360 may be disposed below a connection member 200 to confine an IC 310 together with the connection member 200. For example, the shielding member 360 may be arranged to cover the IC 310 and a passive component 350 together (e.g., a conformal shield) or to cover each of the IC 310 and the passive component 350 (e.g., a compartment shield). For example, the shielding member 360 may have a shape of a hexahedron having one surface open, and may have a hexahedral receiving space through coupling with the connection member 200. The shielding member 360 may be made of a material having high conductivity such as copper to have a short skin depth, and may be electrically connected to a ground plane of the connection member 200. Therefore, the shielding member 360 may reduce electromagnetic noise that may be received by the IC 310 and the passive component 350.
The connector 420 may have a connection structure of a cable (e.g., a coaxial cable, a flexible PCB), may be electrically connected to an IC ground plane of the connection member 200, and may have a role similar to that of the sub-substrate 410 described above. For example, the connector 420 may receive an IF signal, a base band signal and/or a power from a cable, or provide an IF signal and/or a base band signal to a cable.
The chip end-fire antenna 430 may transmit or receive an RF signal in support of an antenna apparatus, according to an embodiment of the present disclosure. For example, the chip end-fire antenna 430 may include a dielectric block having a dielectric constant greater than that of an insulating layer, and a plurality of electrodes disposed on both surfaces of the dielectric block. One of the plurality of electrodes may be electrically connected to the wiring of the connection member 200, and the other of the plurality of electrodes may be electrically connected to the ground plane of the connection member 200.
FIGS. 7A and 7B are plan views illustrating an arrangement of antenna apparatuses according to embodiments of the present disclosure, in an electronic device.
Referring to FIG. 7A, an antenna apparatus 100g including a patch antenna pattern 1110g and a dielectric layer 1140g may be disposed adjacent to a lateral boundary of an electronic device 700g on a set substrate 600g of the electronic device 700g. 
The electronic device 700g may be a smartphone, a personal digital assistant, a digital video camera, a digital still camera, a network system, a computer, a monitor, a tablet, a laptop, a netbook, a television, a video game, a smart watch, an automotive, or the like, but is not limited to such devices.
A communications module 610g and a base band circuit 620g may also be arranged on the set substrate 600g. The antenna apparatus 100g may be electrically connected to the communications module 610g and/or the base band circuit 620g through a coaxial cable 630g. 
The communications module 610g may include at least a portion of: a memory chip, such as a volatile memory (e.g., a DRAM), a non-volatile memory (e.g., a ROM), a flash memory, or the like; an application processor chip, such as a central processor (e.g., a CPU), a graphics processor (e.g., a GPU), a digital signal processor, a cryptographic processor, a microprocessor, a microcontroller, or the like; and a logic chip, such as an analog-to-digital converter, an application-specific IC (ASIC), or the like, to perform a digital signal process.
The base band circuit 620g may perform an analog-to-digital conversion, amplification in response to an analog signal, filtering, and frequency conversion, to generate a base signal. The base signal input/output from the base band circuit 620g may be transferred to the antenna apparatus 100g through a cable.
For example, the base signal may be transmitted to the IC through an electrical connection structure, a core via, and a wiring. The IC may convert the base signal into an RF signal in a millimeter wave (mmWave) band.
Referring to FIG. 7B, a plurality of antenna apparatuses 100i each including a patch antenna pattern 1110i may be respectively disposed adjacent to centers of sides of an electronic device 700i, which has a polygonal shape, on a set substrate 600i of the electronic device 700i. A communications module 610i and a base band circuit 620i may also be arranged on the set substrate 600i. The antenna apparatuses may be electrically connected to the communications module 610i and/or the base band circuit 620i through a coaxial cable 630i. 
The pattern, via, and plane disclosed herein may include a metal material (e.g., a conductive material, such as copper (Cu), aluminum (Al), silver (Ag), tin (Sn), gold (Au), nickel (Ni), lead (Pb), titanium (Ti), alloys thereof, or the like), and may be formed according to plating methods such as a chemical vapor deposition (CVD) process, a physical vapor deposition (PVD) process, a sputtering process, a subtractive process, an additive process, a semi-additive process (SAP), a modified semi-additive process (MSAP), and or the like, but is not limited thereto.
The dielectric and insulating layers disclosed herein may be implemented with a thermosetting resin such as FR4, liquid crystal polymer (LCP), low temperature co-fired ceramic (LTCC), an epoxy resin, or a thermoplastic resin such as polyimide, or a resin impregnated into core materials such as glass fiber, glass cloth, and glass fabric together with inorganic filler, prepregs, Ajinomoto build-up film (ABF), FR-4, bismaleimide triazine (BT), a photoimageable dielectric (PID) resin, a copper clad laminate (CCL), a glass or ceramic based insulating material, or the like.
RF signals disclosed herein may have a format according to W-Fi (IEEE 802.11 family, etc.), WiMAX (IEEE 802.16 family, etc.), IEEE 802.20, long term evolution (LTE), Ev-DO, HSPA+, HSDPA+, HSUPA+, EDGE, GSM, GPS, GPRS, CDMA, TDMA, DECT, Bluetooth, 3G, 4G, 5G, and any other wireless and wired protocols designated later thereto, but are not limited thereto.
An antenna apparatus according to an embodiment of the present disclosure may improve or easily downsize antenna performance (e.g., gain, bandwidth, etc.).
While specific examples have been shown and described above, it will be apparent after an understanding of this disclosure that various changes in form and details may be made in these examples without departing from the spirit and scope of the claims and their equivalents. The examples described herein are to be considered in a descriptive sense only, and not for purposes of limitation. Descriptions of features or aspects in each example are to be considered as being applicable to similar features or aspects in other examples. Suitable results may be achieved if the described techniques are performed in a different order, and/or if components in a described system, architecture, device, or circuit are combined in a different manner, and/or replaced or supplemented by other components or their equivalents. Therefore, the scope of the disclosure is defined not by the detailed description, but by the claims and their equivalents, and all variations within the scope of the claims and their equivalents are to be construed as being included in the disclosure.

## Claims

1. An antenna apparatus comprising:
a dielectric layer;
a patch antenna pattern disposed above an upper surface of the dielectric layer and having a polygonal shape when viewed in a vertical direction perpendicular to the upper surface of the dielectric layer;
a first feed via extending through the dielectric layer in the vertical direction, disposed at a first position biased away from a center of the polygonal shape of the patch antenna pattern toward a first side of the patch antenna pattern, and spaced apart from the patch antenna pattern;
a second feed via extending through the dielectric layer in the vertical direction, disposed at a second position biased away from the center of the polygonal shape of the patch antenna pattern toward a second side of the patch antenna pattern, and spaced apart from the patch antenna pattern, the second side of the patch antenna pattern being different from the first side of the patch antenna pattern;
a first feed pattern electrically connected to an upper end of the first feed via, spaced apart from the patch antenna pattern, and configured to provide a first feed path to the patch antenna pattern; and
a second feed pattern electrically connected to an upper end of the second feed via, spaced apart from the patch antenna pattern, and configured to provide a second feed path to the patch antenna pattern,
wherein the first side of the patch antenna pattern and a third side of the patch antenna pattern between the first and second sides of the patch antenna pattern form a first obtuse angle, and the second and third sides of the patch antenna pattern form a second obtuse angle,
each of the first and second feed patterns comprises a coiled feed pattern disposed in a plane parallel to the patch antenna pattern and perpendicular to the vertical direction, and
the coiled feed pattern comprises a portion having a circular arc shape when viewed in the vertical direction.

2. The antenna apparatus according to claim 1, wherein each of the first and second feed patterns comprises:
a first coiled feed pattern disposed in a first plane parallel to the patch antenna and perpendicular to the vertical direction, having one end electrically connected to a respective one of the first and second feed vias, and comprising a portion having a circular arc shape when viewed in the vertical direction;
an inductive via extending in the vertical direction and having one end electrically connected to another end of the first coiled feed pattern; and
a second coiled feed pattern disposed in a second plane, different from the first plane, parallel to the patch antenna and perpendicular to the vertical direction, having one end electrically connected to another end of the inductive via, and comprising a portion having a circular arc shape when viewed in the vertical direction overlapping the portion having the circular arc shape of the first coiled feed pattern in the vertical direction.

3. The antenna apparatus according to claim 1, wherein the patch antenna pattern is disposed so that the first and second sides of the patch antenna pattern overlap the first and second feed patterns in the vertical direction.

4. The antenna apparatus according to claim 1, wherein a length of the third side of the patch antenna pattern is different from a length of each of the first and second sides of the patch antenna pattern.

5. The antenna apparatus according to claim 4, wherein the polygonal shape of the patch antenna pattern is an octagonal shape, and
the length of the third side of the patch antenna pattern is shorter than the length of each of the first and second sides of the patch antenna pattern.

6. The antenna apparatus according to claim 1, wherein the patch antenna pattern is disposed so that the first and second sides of the patch antenna pattern are oblique to each side of the upper surface of the dielectric layer.

7. The antenna apparatus according to claim 1, further comprising:
a first plurality of extended patch antenna patterns spaced apart from the first feed pattern, and spaced apart from the first side of the patch antenna pattern in a first direction parallel to the patch antenna pattern and away from the center of the polygonal shape of the patch antenna pattern; and
a second plurality of extended patch antenna patterns spaced apart from the second feed pattern, and spaced apart from the second side of the patch antenna pattern in a second direction parallel to the patch antenna pattern and away from the center of the polygonal shape of the patch antenna pattern, the second direction being different from the first direction.

8. The antenna apparatus according to claim 7, wherein the first feed via is disposed to overlap the patch antenna pattern and at least one of the first plurality of extended patch antenna patterns when viewed in the vertical direction, and
the second feed via is disposed to overlap the patch antenna pattern and at least one of the second plurality of extended patch antenna patterns when viewed in the vertical direction.

9. The antenna apparatus according to claim 7, wherein each of the first and second plurality of extended patch antenna patterns comprises:
a first extended patch antenna pattern spaced apart from a respective one of the first and second sides of the patch antenna pattern; and
a second extended patch antenna pattern spaced apart from the first extended patch antenna pattern so that the first extended patch antenna pattern is disposed between the patch antenna pattern and the second extended patch antenna pattern.

10. The antenna apparatus according to claim 1, further comprising a plurality of first dummy patterns arranged three-dimensionally between the first and second feed patterns on a level in the vertical direction between the patch antenna pattern and the first and second feed patterns, each of the plurality of first dummy patterns having a polygonal shape when viewed in the vertical direction.

11. An antenna apparatus comprising:
a ground plane;
a patch antenna pattern disposed above an upper surface of the ground plane and having a polygonal shape when viewed in a vertical direction perpendicular to the upper surface of the ground plane;
a first feed via extending through the ground plane in the vertical direction, disposed at a first position biased toward away from a center of the polygonal shape of the patch antenna pattern toward a first side of the patch antenna pattern, and spaced apart from the patch antenna pattern;
a second feed via extending through the ground plane in the vertical direction, disposed at a second position biased away from the center of the polygonal shape of the patch antenna pattern toward a second side of the patch antenna pattern, and spaced apart from the patch antenna pattern, the second side of the patch antenna pattern being different from the first side of the patch antenna pattern;
a first feed pattern electrically connected to an upper end of the first feed via, spaced apart from the patch antenna pattern, and configured to provide a first feed path to the patch antenna pattern;
a second feed pattern electrically connected to an upper end of the second feed via, spaced apart from the patch antenna pattern, and configured to provide a second feed path to the patch antenna pattern; and
a plurality of first dummy patterns arranged three-dimensionally between the first and second feed patterns on a level in the vertical direction between the patch antenna pattern and the first and second feed patterns, each of the plurality of first dummy patterns having a polygonal shape when viewed in the vertical direction,
wherein at least some of the plurality of first dummy patterns are completely overlapped by the patch antenna pattern when viewed in the vertical direction.

12. The antenna apparatus according to claim 11, further comprising a plurality of second dummy patterns arranged three-dimensionally to surround a space in which the plurality of first dummy patterns are arranged, each of the plurality of second dummy patterns having a polygonal shape when viewed in the vertical direction
wherein a space between the first and second feed patterns on the level in the vertical direction between the patch antenna pattern and the first and second feed patterns is surrounded by the plurality of first dummy patterns and the plurality of second dummy patterns.

13. The antenna apparatus according to claim 12, wherein a side of each of the first dummy patterns is oblique to a side of each of the plurality of second dummy patterns.

14. The antenna apparatus according to claim 11, wherein the first feed pattern comprises a first coiled feed pattern, and
the second feed pattern comprises a second coiled feed pattern.

15. An antenna apparatus comprising:
a dielectric layer;
a patch antenna pattern disposed above an upper surface of the dielectric layer and having a polygonal shape when viewed in a vertical direction perpendicular to the upper surface of the dielectric layer;
a first feed via extending through the dielectric layer in the vertical direction, disposed at a first position biased away from a center of the polygonal shape of the patch antenna pattern toward a first side of the patch antenna pattern, and spaced apart from the patch antenna pattern;
a second feed via extending through the dielectric layer in the vertical direction, disposed at a second position biased away from the center of the polygonal shape of the patch antenna pattern toward a second side of the patch antenna pattern, and spaced apart from the patch antenna pattern, the second side of the patch antenna pattern being different from the first side of the patch antenna pattern;
a first feed pattern electrically connected to an upper end of the first feed via, spaced apart from the patch antenna pattern, and configured to provide a first feed path to the patch antenna pattern;
a second feed pattern electrically connected to an upper end of the second feed via, spaced apart from the patch antenna pattern, and configured to provide a second feed path to the patch antenna pattern;
a first plurality of extended patch antenna patterns spaced apart from the first feed pattern, and spaced apart from the first side of the patch antenna pattern in a first direction parallel to the patch antenna pattern and away from the center of the polygonal shape of the patch antenna pattern without overlapping the patch antenna pattern in the vertical direction; and
a second plurality of extended patch antenna patterns spaced apart from the second feed pattern, and spaced apart from the second side of the patch antenna pattern in a second direction parallel to the patch antenna pattern and away from the center of the polygonal shape of the patch antenna pattern without overlapping the patch antenna pattern in the vertical direction, the second direction being different from the first direction,
wherein the first feed pattern comprises a coiled feed pattern that overlaps one extended patch antenna pattern of the first plurality of extended patch antenna patterns when viewed in the vertical direction,
the second feed pattern comprises a coiled feed pattern that overlaps one extended patch antenna pattern of the second plurality of extended patch antenna patterns when viewed in the vertical direction, and
when the antenna apparatus is viewed in the vertical direction, the patch antenna pattern is disposed in a first area, the first plurality of extended patch antenna patterns are disposed in a second area separated from the first area and not overlapping the first area, and the second plurality of extended patch antenna patterns are disposed in a third area separated from the first and second areas and not overlapping the first and second areas.

16. The antenna apparatus according to claim 15, wherein each of the first and second plurality of extended patch antenna patterns comprises:
a first extended patch antenna pattern spaced apart from a respective one of the first and second sides of the patch antenna pattern; and
a second extended patch antenna pattern spaced apart from the first extended patch antenna pattern so that the first extended patch antenna pattern is disposed between the patch antenna pattern and the second extended patch antenna pattern, and
a width of the second extended patch antenna pattern is different from a width of the first extended patch antenna pattern.

17. The antenna apparatus according to claim 15, wherein each of the first and second plurality of extended patch antenna patterns comprises:
a first extended patch antenna pattern spaced apart from a respective one of the first and second sides of the patch antenna pattern; and
a second extended patch antenna pattern spaced apart from the first extended patch antenna pattern so that the first extended patch antenna pattern is disposed between the patch antenna pattern and the second extended patch antenna pattern,
the polygonal shape of the patch antenna pattern is an octagonal shape,
the first side of the patch antenna pattern is connected to a first end of a third side of the patch antenna pattern,
the second side of the patch antenna pattern is connected to a second end of the third side of the patch antenna pattern, and
there are no first and second extended patch antenna patterns spaced away from the third side of the patch antenna pattern.

18. The antenna apparatus according to claim 17, wherein each of the first and second extended patch antenna patterns has a rectangular shape when viewed in the vertical direction.

19. The antenna apparatus according to claim 18, wherein sides of the rectangular shape of each of the first and second extended patch antenna patterns are oblique to each side of the upper surface of the dielectric layer.

20. The antenna apparatus according to claim 15, wherein the polygonal shape of the patch antenna pattern is a rectangular shape, and
the first and second sides of the patch antenna pattern are oblique to each side of the upper surface of the dielectric layer.