Dual polarization antenna device for creating a dual band function

A dual polarization antenna device for creating a dual band function, includes: a first dielectric body, a patch layer, a first phase difference changing structure, a second dielectric body, a common metal layer, a ground layer, a second phase difference changing structure, a first antenna feed pin, and a second antenna feed pin. The first dielectric body, the patch layer, the first phase difference changing structure, the common metal layer, and the first antenna feed pin are combined together to form an upper polarization antenna structure. The second dielectric body, the common metal layer, the second phase difference changing structure, and the ground layer are combined together to form a lower polarization antenna structure. Therefore, the upper polarization antenna structure and the lower polarization antenna structure are combined to create both the dual polarization and the dual band functions.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to an antenna device, and particularly relates to a dual polarization antenna device for creating a dual band function.

2. Description of the Related Art

Due to the development of communication technology, a lot of electronic products have been developed that use wireless communication technology, such as cell phones, wireless Internet devices, and personal digital assistants (PDAs), etc. The requirements demanded by the wireless communication devices from consumers has become higher and higher, namely in terms of the appearance and the dimensions of the devices. For cell phones, the receiving frequency has developed from a single frequency, to two, then three, and now four frequencies. Consumers also prefer cell phones which have a fresh appearance, small dimensions, a light weight, and are portable.

Moreover, an antenna with dual polarization and dual band functions is disclosed due to the progress of communication technology. Dual band function means that the antenna can be used in two different bands. The antenna will generate peak points of gain in the two different bands, and the antenna's impedance is matched.

SUMMARY OF THE INVENTION

One particular aspect of the present invention is to provide a dual polarization antenna device for creating a dual band function. The present invention provides two types of dual polarization structures and the two dual polarization structures share a common metal layer to create both the dual polarization and the dual band functions for user to use.

In order to achieve the above-mentioned aspects, the first embodiment of the present invention provides a dual polarization antenna device for creating a dual band function, comprising: a first dielectric body, a patch layer, a first phase difference changing structure, a second dielectric body, a common metal layer, a ground layer, a second phase difference changing structure, a first antenna feed pin, and a second antenna feed pin.

Moreover, the patch layer is formed on a top surface of the first dielectric body. The first phase difference changing structure is formed on the patch layer. The common metal layer is formed between the first dielectric body and the second dielectric body. The ground layer is formed on a bottom surface of the second dielectric body. The second phase difference changing structure is formed in an inner portion and on the bottom surface of the second dielectric body. The first antenna feed pin penetrates the first dielectric body and the second dielectric body in sequence. The second antenna feed pin penetrates the second dielectric body.

Therefore, the first dielectric body, the patch layer, the first phase difference changing structure, the common metal layer, and the first antenna feed pin are combined together to form an upper polarization antenna structure. The second dielectric body, the common metal layer, the second phase difference changing structure, and the ground layer are combined together to form a lower polarization antenna structure.

In order to achieve the above-mentioned aspects, the second embodiment of the present invention provides a dual polarization antenna device for creating a dual band function. The difference between the second embodiment and the first embodiment is that the second embodiment lacks a first phase difference changing structure. Hence, the first dielectric body, the patch layer, the common metal layer, and the first antenna feed pin are combined together to form an upper polarization antenna structure.

In order to achieve the above-mentioned aspects, the third embodiment of the present invention provides a dual polarization antenna device for creating a dual band function. The difference between the third embodiment and the first embodiment is that a second phase difference changing structure is formed on a common metal layer.

In order to achieve the above-mentioned aspects, the fourth embodiment of the present invention provides a dual polarization antenna device for creating a dual band function. The difference between the fourth embodiment and the first embodiment is that the fourth embodiment lacks a first phase difference changing structure and a second phase difference changing structure. Hence, the first dielectric body, the patch layer, the common metal layer, and the first antenna feed pin are combined together to form an upper polarization antenna structure. The second dielectric body, the common metal layer, the ground layer, and the second antenna feed pin are combined together to form a lower polarization antenna structure.

In conclusion, the upper polarization antenna structure and the lower polarization antenna structure are combined to create both the dual polarization and the dual band functions.

It is to be understood that both the foregoing general description and the following detailed description are exemplary, and are intended to provide further explanation of the invention as claimed. Other advantages and features of the invention will be apparent from the following description, drawings and claims.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Referring toFIGS. 1 to 7, the first embodiment of the present invention provides a dual polarization antenna device for creating a dual band function, including: a first dielectric body1a, a patch layer2a, a first phase difference changing structure3a, a second dielectric body4a, a common metal layer5a, a ground layer6a, a second phase difference changing structure7a, a first antenna feed pin8a, and a second antenna feed pin9a. The first phase difference changing structures3aand the second phase difference changing structures7aare 90 degree phase difference changing structures.

Referring toFIGS. 1 and 2again, the first part of the first embodiment of the present invention is disclosed. The first dielectric body1ais made of dielectric material, and the dielectric material can be a ceramic material or an insulative material, etc. The patch layer2ais formed on a top surface of the first dielectric body1a. The first phase difference changing structure3ais formed on the patch layer2a.

For the first embodiment, the first phase difference changing structure3ais a pair of cutting areas that are formed on two diagonal edges of the patch layer2a. The pair of cutting areas is a pair of triangular areas of the same size. In other words, the patch layer2ahas a square shape and is formed on the first dielectric body1a. The pair of cutting areas on the two diagonal edges of the patch layer2aneed to be cut to generate the 90 degree phase difference. In addition, a top side of the first antenna feed pin8ais exposed outside of the patch layer2ato form a first feed point80a. The first feed point80ais disposed on a two opposite sides center line C1of the patch layer2a. A position P1of the first feed point80bis close to a center point of the two opposite sides center line C1asFIG. 1.

Referring toFIGS. 3 to 5again, the second part of the first embodiment of the present invention is disclosed. The second dielectric body4ais also made of dielectric material. The dielectric material can be a ceramic material or an insulative material, etc. The second dielectric body4ahas a through hole40acorresponding to the first antenna feed pin8a. The common metal layer5ais formed on a top surface of the second dielectric body4a. The ground layer6ais formed on a bottom surface of the second dielectric body4a.

The second phase difference changing structure7ais formed in an inner portion and on the bottom surface of the second dielectric body4a. The second phase difference changing structure7aincludes a metal leading wire70aand an antenna pin71a. The ground layer6ahas an exposed area for exposing the second dielectric body4a. Hence, the metal leading wire70ais formed in the exposed area and on the bottom surface of the second dielectric body4aand is insulated from the ground layer6ato form a coplanar waveguide. One side of the metal leading wire70ais electrically connected with a bottom side of the second antenna feed pin9a, while the other side of the metal leading wire70ais electrically connected with the antenna pin71a.

The antenna pin71apenetrates the second dielectric body4a. A top side of the antenna pin71ais exposed outside of the common metal layer5a. A bottom side of the antenna pin71aextends from a bottom surface of ground layer6a.

A top side of the second antenna feed pin9ais exposed outside of the common metal layer5ato form a second feed point90a. A bottom side of the second antenna feed pin9ais exposed outside of a bottom surface of the ground layer6a.

Referring toFIGS. 6 to 7again, when the first part and the second part are combined together, the common metal layer5ais formed between the first dielectric body1aand the second dielectric body4a. The first antenna feed pin8apenetrates the first dielectric body1aand the second dielectric body4ain sequence. The bottom side of the first antenna feed pin8aextends from the bottom surface of the ground layer6a. The first antenna feed pin8ais insulated from the common metal layer5aand the ground layer6a. The second antenna feed pin9apenetrates the second dielectric body4a, and the second antenna feed pin9ais insulated from the ground layer6a.

The first part and the second part share the common metal layer5a. Hence, the first dielectric body1a, the patch layer2a, the first phase difference changing structure3a, the common metal layer5a, and the first antenna feed pin8aare combined together to form an upper polarization antenna structure A1. The second dielectric body4a, the common metal layer5a, the second phase difference changing structure7a, and the ground layer6aare combined together to form a lower polarization antenna structure B1.

Therefore, the upper polarization antenna structure A1and the lower polarization antenna structure B1are combined to create both the dual polarization and the dual band functions.

Referring toFIGS. 8 to 14, the second embodiment of the present invention provides a dual polarization antenna device for creating a band function. It means the present invention allows users to use dual polarization and dual band technologies. The device includes: a first dielectric body1b, a patch layer2b, a first phase difference changing structure3a, a second dielectric body4b, a common metal layer5b, a ground layer6b, a second phase difference changing structure7a, a first antenna feed pin8b, and a second antenna feed pin9a

Referring toFIGS. 8 to 9again, with regard to the first part of the second embodiment, the difference between the second embodiment and the first embodiment is that the first antenna feed pin8bhas a first feed point80bexposed outside of the patch layer2b. The first feed point80bis disposed on a diagonal edge center line C2of the patch layer2b. A position P2of the first feed point80bis close to a center point of the diagonal edge center line C2(as shown inFIG. 8) for generating 90 degree phase difference.

Referring toFIGS. 8 to 14again, with regard to the second part of the second embodiment, the difference between the second embodiment and the first embodiment is that because the position of the first feed point80bis changed, the position of a through hole40bof the second dielectric body4bis changed.

The first part and the second part share the common metal layer5b. Hence, the first dielectric body1b, the patch layer2b, the common metal layer5b, and the first antenna feed pin8bare combined together to form an upper polarization antenna structure A2. The second dielectric body4b, the common metal layer5b, the second phase difference changing structure7a, and the ground layer6bare combined together to form a lower polarization antenna structure B2.

Therefore, the upper polarization antenna structure A2and the lower polarization antenna structure B2are combined to create both the dual polarization and the dual band functions.

According to the above-mentioned two embodiments, for the upper polarization antenna structure A1, the shape of the patch layer2aand the position P1of the first feed point80aof the first antenna feed pin8aare mated in order to create dual polarization and dual band functions. For the upper polarization antenna structure A2, the position P2of the first feed point80bof the first antenna feed pin8bcan create dual polarization and dual band functions directly.

Referring toFIGS. 15 to 17, the second part of the third embodiment of the present invention includes: a second dielectric body4c, a common metal layer5c, a ground layer6c, a second phase difference changing structure7c, and a second antenna feed pin9c. The second phase difference changing structure7cis a pair of cutting areas that are formed on two diagonal edges of the common metal layer5c. The pair of cutting areas is a pair of triangular areas of the same size. In other words, the common metal layer5chas a square shape and is formed on the second dielectric body4a. The pair of cutting areas on the two diagonal edges of the common metal layer5cneeds to be cut for generating 90 degree phase difference. In addition, the second antenna feed pin9cextends from a bottom surface of the ground layer6c. The second antenna feed pin9chas a second feed point90cexposed outside of the common metal layer5c. The second feed point90cis disposed on a two opposite sides center line C3of the common metal layer5c. A position P3of the second feed point90cis close to a center point of the two opposite sides center line C3(as is shown inFIG. 15).

The first part of the first embodiment and the second part of the third embodiment are combined together. Therefore, the first dielectric body1a, the patch layer2a, the first phase difference changing structure3a(as shown inFIG. 1), the common metal layer5c, and the first antenna feed pin8aare combined together to form an upper polarization antenna structure A3. The second dielectric body4c, the common metal layer5c, the second phase difference changing structure7c, and the ground layer9care combined together to form a lower polarization antenna structure B3.

Therefore, the upper polarization antenna structure A3and the lower polarization antenna structure B3are combined to create both the dual polarization and the dual band functions.

Referring toFIGS. 18 to 20, the second part of the fourth embodiment of the present invention includes: a second dielectric body4d, a common metal layer5d, a ground layer6d, and a second antenna feed pin9d. The second antenna feed pin9dextends from a bottom surface of the ground layer6d. The second antenna feed pin9dhas a second feed point90dexposed outside of the common metal layer5d. The second feed point90dis disposed on a diagonal edge center line C4of the common metal layer5d. A position P4of the second feed point90dis close to a center point of the diagonal edge center line C4asFIG. 18for generating 90 degree phase difference.

The first part of the first embodiment and the second part of the fourth embodiment are combined together. Therefore, the first dielectric body1a, the patch layer2a, the first phase difference changing structure3a(as shown inFIG. 1), the common metal layer5d, and the first antenna feed pin8aare combined together to form an upper polarization antenna structure A4. The second dielectric body4d, the common metal layer5d, and the ground layer9dare combined together to form a lower polarization antenna structure B4.

Therefore, the upper polarization antenna structure A4and the lower polarization antenna structure B4are combined to create both the dual polarization and the dual band functions.