Patent Description:
This application relates to the field of antenna technology, and in particular to a double frequency vertical polarization antenna and a television.

With the development of communication and electronic technology, various antennas have been widely used in televisions. The styles and specifications of antennas are mostly designed according to the performance of the products used. At present, the television base is fully metalized and closed, which seriously blocks the forward signal, and cannot adapt to the influence of the base contacting wooden table, marble and other materials.

Document <NUM> (<CIT>) discloses a compact, vehicle-mounted antenna. A first and second antenna element are positioned on a conductive ground plane. The antenna elements can comprise platforms supported by a ground and a feed. The antenna elements can be tuned to various bands (e.g., cellular or PCS). At least one additional antenna element (e.g., a GPS receive antenna) can be positioned between the two antenna elements. One of the feeds of the antenna elements can be angled so that the antenna element has a desired height (e.g., a height matching the other antenna element). The antenna elements can be electrically connected to a transmission line via a single feed line.

Document <NUM> (<CIT>) discloses a microstrip antenna and a TV. The microstrip antenna includes an antenna part arranged on a first surface of the substrate. A long side of the antenna part is provided with two rectangular grooves parallel to a short side, and the long side of the antenna part with the rectangular grooves is connected with a plurality of metal through holes through a plurality of metal through holes. The antenna portion includes a connection segment located between the two rectangular slots.

Document <NUM> (<CIT>) discloses a multiple frequency band antenna, comprising at least two antenna elements connected via an antenna feeding network to a radio frequency source/receiver, said antenna elements being operable in at least two non-overlapping frequency bands. The antenna feeding network comprises means for connection to the radio frequency source/receiver, means for direct electrical connection to a feed-end portion of a first antenna element being operable in a lowermost frequency band, and means for capacitive coupling to a feed-end portion of at least a second antenna element being operable in a frequency band which is higher than said lowermost frequency band. Further, the capacitive coupling being dimensioned to provide a relatively high impedance for frequencies in said lowermost frequency band and a relatively low impedance for frequencies in said higher frequency band.

Document <NUM> (<CIT>) discloses multiband monopole antennas. The antennas include a substrate for mounting conductors, one or more conductors for receiving networking signals mainly in a first frequency band, and one or more conductors for receiving networking signals mainly in a second frequency band. The conductors can have a polygonal shape or the conductors can have a linear, space-filling, or grid dimension shape. The conductors can be connected at a feed point. One or more antenna can be incorporated into a single printed circuit board. When multiple antennas are used with the same printed circuit board, the conducting material of the printed circuit board located between the antenna attachment points can be interrupted to improve the isolation of each antenna.

The main object of this application is to provide a double frequency vertical polarization antenna, which aims to provide a double frequency vertical polarization antenna that is small in size and has a higher gain.

In order to achieve the above object, a double frequency vertical polarization antenna is provided according to the independent claim.

In this application, the double frequency vertical polarization antenna uses a high-frequency radiation unit and a low-frequency radiation unit to achieve double frequency characteristics of <NUM> and <NUM>, with simple manufacturing process and low cost. Further, the high-frequency radiation unit is used to make the horizontal plane have good omnidirectional gain, the frequency is high to miniaturize the zero-order microstrip antenna to achieve horizontal omnidirectional radiation and vertical polarization under low profile, ensuring antenna radiation performance, and its small size and low profile facilitate the miniaturization of television. The low-frequency radiation unit may improve the gain of low-frequency radiation, and the double frequency vertical polarization antenna is mainly polarized by vertical polarization, which improves the adaptability of signal transmission to the surrounding environment.

In order to more clearly describe the technical solutions in the embodiments of this application or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of this application. For those of ordinary skill in the art, without creative work, other drawings can be obtained according to the structures shown in these drawings.

The realization, functional characteristics, and advantages of the purpose of this application will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

The technical solutions in the embodiments of this application will be described clearly and completely in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, but not all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of this application.

It should be noted that all directional indicators (such as up, down, left, right, front, back. ) in the embodiments of this application are only used to explain the relative positional relationship, movement conditions, etc. among the components in a specific posture (as shown in the drawings), if the specific posture changes, the directional indicator also changes accordingly.

In this application, unless otherwise clearly specified and limited, the terms "connected", "fixed", etc. should be understood in a broad sense. For example, "fixed" can be a fixed connection, a detachable connection, or a whole; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication between two components or the interaction relationship between two components, unless specifically defined otherwise. For those of ordinary skill in the art, the specific meanings of the above-mentioned terms in this application can be understood according to specific circumstances.

In addition, the descriptions related to "first", "second", etc. in this application are for descriptive purposes only, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first" and "second" may include at least one of the features either explicitly or implicitly. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of those skilled in the art to realize. When the combination of technical solutions conflicts with each other or cannot be realized, it should be considered that the combination of such technical solutions does not exist, nor within the scope of protection required by this application.

This application provides a double frequency vertical polarization antenna <NUM>.

Referring to <FIG>, the double frequency vertical polarization antenna <NUM> includes a dielectric substrate <NUM>, and the dielectric substrate <NUM> includes a power feeding surface <NUM> and a mounting surface <NUM> arranged oppositely. The double frequency vertical polarization antenna <NUM> further includes a power feeder <NUM> and an antenna part <NUM>. The power feeder <NUM> is provided on the power feeding surface <NUM> of the dielectric substrate <NUM>, and the antenna part <NUM> is provided on the mounting surface <NUM> of the dielectric substrate <NUM>. The antenna part <NUM> includes a high-frequency radiation unit <NUM> and a low-frequency radiation unit <NUM> spaced apart from each other. Both the high-frequency radiation unit <NUM> and the low-frequency radiation unit <NUM> are penetrated through the dielectric substrate <NUM> and electrically connected to the power feeder <NUM>.

Specifically, the dielectric substrate <NUM> is a double-layer PCB (Printed Circuit Board), and the double-layer circuit board not only facilitates impedance matching of the double frequency vertical polarization antenna <NUM>, but also facilitates power feeding. In addition, the material selection of the dielectric substrate <NUM> will affect the gain and other performance of the double frequency vertical polarization antenna <NUM>, and the thickness of the dielectric substrate <NUM> will also affect the volume and weight of the double frequency vertical polarization antenna <NUM>; and the dielectric substrate <NUM> is generally made of non-metal material. In this embodiment, the shape of the dielectric substrate <NUM> is rectangular, and the material of the dielectric substrate <NUM> may be FR4 epoxy resin, the dielectric constant is <NUM>, the thickness is <NUM>, the length is <NUM>, and the width is <NUM>. Such a design not only has low cost, but also may ensure that good antenna operating characteristics are maintained at different operating frequencies.

The double frequency vertical polarization antenna <NUM> of this application adopts the high-frequency radiation unit <NUM> and the low-frequency radiation unit <NUM> to achieve double frequency characteristics of <NUM> and <NUM>, and has a simple manufacturing process and low cost. The high-frequency radiation unit <NUM> is used to make the horizontal plane have good omnidirectional gain, the frequency is high to miniaturize the zero-order microstrip antenna to achieve horizontal omnidirectional radiation and vertical polarization under low profile, ensuring antenna radiation performance, and its small size and low profile facilitate the miniaturization of television <NUM>. The low-frequency radiation unit <NUM> may improve the gain of low-frequency radiation. The double frequency vertical polarization antenna <NUM> is mainly polarized by vertical polarization, which improves the adaptability of signal transmission to the surrounding environment.

Referring to <FIG> and <FIG>, the low-frequency radiation unit <NUM> is arranged in a rectangular shape, a long side of the low-frequency radiation unit <NUM> defines two rectangular slots <NUM> parallel to a short side of the low-frequency radiation unit <NUM>, the two rectangular slots <NUM> are arranged at intervals, and a connecting section <NUM> is formed between the two rectangular slots <NUM>.

In this embodiment, the low-frequency radiation unit <NUM> is rectangular, and a long side of the low-frequency radiation unit <NUM> defining the two rectangular slots <NUM> defines ground holes <NUM>. In addition, the dielectric substrate <NUM> further defines ground holes <NUM> adjacent to the said long side. The number of ground holes <NUM> will affect the radiation efficiency of the double frequency vertical polarization antenna <NUM>. Generally speaking, the greater the number of ground holes <NUM>, the higher the radiation efficiency of the double frequency vertical polarization antenna <NUM>. In this embodiment, the ground holes <NUM> are evenly spaced, and a reasonable density of the metalized vias <NUM> is used as a short circuit to realize a miniaturized design of the antenna and increase the gain of the double frequency vertical polarization antenna <NUM>.

In an embodiment of this application, shapes of the two rectangular slots <NUM> are the same, and the distribution positions of the rectangular slots <NUM> are not specifically limited. However, the position of the connecting section <NUM> changes as the positions of the two rectangular slots <NUM> change. When the two rectangular slots <NUM> are symmetrically distributed on both sides of a line connecting midpoints of the long sides of the low-frequency radiation unit <NUM>, the connecting section <NUM> is located at the midpoint of the long side of the low-frequency radiation unit <NUM>, which is beneficial to reduce the out-of-roundness of the low-frequency radiation.

Referring to <FIG>, <FIG>, the connecting section <NUM> is arranged at an angle of <NUM>° to a horizontal plane.

In this embodiment, the connecting section <NUM> of the low-frequency radiating unit <NUM> is arranged at an angle of <NUM>° to the horizontal plane. Two double frequency vertical polarization antennas <NUM> may be provided in the product, and the two are arranged in a mirror image. The two antennas with a <NUM>° diagonal layout may achieve orthogonal mutual blind compensation, thereby achieving omnidirectional coverage, and achieve horizontal omnidirectional gain complementary.

Referring to <FIG>, the double frequency vertical polarization antenna <NUM> further includes a combiner <NUM> provided on the power feeding surface <NUM>, where the high-frequency radiation unit <NUM> includes a high-frequency power feeding point <NUM>, the low-frequency radiation unit <NUM> includes a low-frequency power feeding point <NUM>, and the high-frequency power feeding point <NUM> and the low-frequency power feeding point <NUM> are electrically connected to the power feeder <NUM> through the combiner <NUM>.

In this embodiment, the high-frequency power feeding point <NUM> and the low-frequency power feeding point <NUM> may be metalized vias. The high-frequency radiation unit <NUM> and the low-frequency radiation unit <NUM> on the mounting surface <NUM> of the dielectric substrate <NUM> are connected to the combiner <NUM> located on the mounting surface <NUM> of the dielectric substrate <NUM> through the metalized vias, and then connected to the power feeder <NUM> through the combiner <NUM>. Double frequency communication is realized by combining the channels, and the structure is compact, thereby facilitating miniaturized design of the double frequency vertical polarization antenna <NUM>. Certainly, a radio frequency switch may also be used to achieve double frequency communication. In addition, the high-frequency power feeding line and the low-frequency power feeding line are provided with a band pass filter <NUM> to reduce interference and make the voice of the television <NUM> smoother without the problem of screen j amming.

Referring to <FIG> and <FIG>, a power feeding point structure <NUM> is protruded from the connecting section <NUM>, and the low-frequency power feeding point <NUM> is provided on the power feeding point structure <NUM>.

The power feeding point structure <NUM> is protruded from the connecting section <NUM>, and the feeding structure is protruded from an edge of a long side of the rectangular low-frequency radiation unit <NUM>. A width of the power feeding point structure <NUM> may be smaller than a width of the connecting section <NUM>, and may be equal to or greater than a width of the connecting section <NUM>, which is not limited here. In an optional embodiment, the width of the power feeding point structure <NUM> is smaller than the width of the connecting section <NUM>, which is beneficial to achieve impedance matching.

Please continue to refer to <FIG> and <FIG>, the high-frequency radiation unit <NUM> is arranged in a circular shape, and the high-frequency power feeding point <NUM> is located at a center of the high-frequency radiation unit.

In this embodiment, the high-frequency radiation unit <NUM> is arranged in a circular shape, which is beneficial to reduce the out-of-roundness of high-frequency radiation, so as to achieve horizontal omnidirectional radiation, which is beneficial to increase the gain of the television <NUM>. Specifically, the high-frequency radiation unit <NUM> has a thickness of <NUM> and a diameter of <NUM>.

Referring to <FIG>, the high-frequency radiation unit <NUM> further defines a metalized via <NUM> spaced apart from the high-frequency power feeding point <NUM>, and the metalized via <NUM> is configured to excite a vertical mode.

The metalized via <NUM> refers to a via with solidified metal inside, so that the via is electrically conductive. A hole may be drilled on the dielectric substrate <NUM>, and then liquid metal (such as copper) may be injected into the hole and solidified to form a metalized via <NUM>. In this embodiment, the metalized via <NUM> is configured to excite a vertical mode to meet the requirements of the vertical and horizontal polarization components of the high-frequency antenna. Optionally, multiple metalized vias <NUM> are evenly spaced along the circumference of the high-frequency radiation unit <NUM>, and a reasonable density of metalized vias <NUM> may be used to achieve a miniaturized antenna design.

This application further provides a television <NUM>, which is mounted with a double frequency vertical polarization antenna <NUM>. For the specific structure of the double frequency vertical polarization antenna <NUM>, refer to the above-mentioned embodiments. Because the television <NUM> adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here.

Claim 1:
A double frequency vertical polarization antenna (<NUM>), comprising:
a dielectric substrate (<NUM>), comprising a power feeding surface (<NUM>) and a mounting surface (<NUM>) oppositely arranged;
a power feeder (<NUM>), provided on the power feeding surface (<NUM>) of the dielectric substrate (<NUM>); and
an antenna part (<NUM>), provided on the mounting surface (<NUM>) of the dielectric substrate (<NUM>), and comprising a high-frequency radiation unit (<NUM>) and a low-frequency radiation unit (<NUM>) spaced apart from the high-frequency radiation unit (<NUM>), both the high-frequency radiation unit (<NUM>) and the low-frequency radiation unit (<NUM>) being penetrated through the dielectric substrate (<NUM>) and electrically connected to the power feeder (<NUM>);
characterized in that the low-frequency radiation unit (<NUM>) is arranged in a rectangular shape, a long side of the low-frequency radiation unit (<NUM>) defines two rectangular slots (<NUM>) parallel to a short side of the low-frequency radiation unit (<NUM>), the two rectangular slots (<NUM>) are arranged at intervals, and a connecting section (<NUM>) is formed between the two rectangular slots (<NUM>).