High-frequency transparent array antenna

Abstract

The utility model discloses a high-frequency transparent array antenna, which comprises a transparent flexible dielectric layer and an array antenna, the array antenna comprises an upper conductive circuit layer and a lower conductive circuit layer; the upper conductive circuit layer comprises an antenna part, a transmission line and a feed connection point, the antenna part forms an array by a plurality of array units, the array units are connected with the transmission line, and the transmission line is connected with the feed connection point; and the lower conductive circuit layer is a grounding plate of the array antenna. According to the utility model, the array antenna is arranged on the transparent flexible dielectric layer, and the gain of the antenna is improved and the transmission distance of signals is increased by using the array design; besides, the array antenna is subjected to transparent design, part of the structure of the array antenna adopts a gridding structure, and the transparent flexible dielectric layer is added, so that the transparency of the antenna is improved, multi-point layout can be carried out on the premise of not influencing the attractiveness, the use requirement of the high-frequency transparent antenna is met, and the radiation performance is not lost.

Description

Technical Field

[0001] The utility model relates to the technical field of high-frequency transparent array antennas, and more specifically, to a high-frequency transparent array antenna. Background Art

[0002] With the development of antenna technology, the application of high-frequency millimeter-wave antennas has received increasing attention. However, due to the shorter wavelength, high-frequency millimeter-wave antennas are more easily blocked by objects such as particles and buildings during transmission, resulting in a shorter transmission distance, which greatly limits the application of high-frequency millimeter-wave antennas. With the increasingly rich application scenarios, in addition to the higher requirements for antenna performance, the antenna is also required to have good concealment and a high aesthetic degree. Content of the Utility Model

[0003] The utility model provides a high-frequency transparent array antenna to solve the problems raised in the above background art. To achieve the above object, the utility model provides the following technical solutions: a high-frequency transparent array antenna, comprising a transparent flexible dielectric layer and an array antenna; the array antenna comprises an upper conductive circuit layer and a lower conductive circuit layer, and the upper conductive circuit layer and the lower conductive circuit layer are respectively arranged on two side surfaces of the transparent flexible dielectric layer; the upper conductive circuit layer comprises an antenna part, a transmission line and a feed connection point, the antenna part is formed by an array of a plurality of array units, the array units are connected to the transmission line, and the transmission line is connected to the feed connection point; the lower conductive circuit layer is the ground plane of the array antenna.

[0004] Preferably, the array unit is composed of four array sub-units, each array sub-unit comprises a pair of radiation units and an impedance converter, the pair of radiation units are symmetrically arranged and are respectively connected to the impedance converter, and the impedance converter is connected to the transmission line through a wire.

[0005] Preferably, the radiation unit, the impedance converter and the transmission line are all in a grid structure, and the feed connection point is in a non-grid structure.

[0006] Preferably, the lower conductive circuit layer is in a grid structure.

[0007] Preferably, the transparent flexible dielectric layer includes but is not limited to PET, COP, and CPI.

[0008] Preferably, the material of the array antenna includes but is not limited to metal materials and non-metal conductive materials.

[0009] Preferably, the array antenna is formed on the transparent flexible dielectric layer by an additive method or an etching subtraction method.

[0010] Preferably, the operating frequency of the array antenna is about 27 - 29 GHz, and its maximum gain can reach 15 dBi.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows: The present utility model is reasonably designed and has a simple structure. By arranging the array antenna on the transparent flexible dielectric layer and using the array design, the gain of the antenna is improved, and the signal transmission distance is increased. In addition, through the transparent design of the array antenna, some structures of the array antenna adopt a grid structure, combined with the transparent flexible dielectric layer, which improves the transparency of the antenna. Without affecting the aesthetics, it can be arranged at multiple points to meet the usage requirements of the high-frequency transparent antenna without losing the radiation performance. Description of the Drawings

[0012] Figure 1 is a schematic structural diagram of the high-frequency transparent array antenna according to an embodiment of the present utility model;

[0013] Figure 2 is a schematic structural diagram of the upper conductive line layer of the high-frequency transparent array antenna according to an embodiment of the present utility model;

[0014] In Figure 1 and Figure 2 the corresponding relationship between the names of each component and the reference numerals in the drawings is as follows:

[0015] 1 - transparent flexible dielectric layer, 2 - upper conductive line layer, 21 - transmission line, 22 - feed connection point, 23 - radiation unit, 24 - impedance converter, 3 - lower conductive line layer. Specific Embodiments

[0016] The following further describes in detail the embodiments of the present utility model in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0017] In the description of the present utility model, unless otherwise specified, "a plurality of" means two or more; the orientation or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0018] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "connected" and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0019] Please refer to Figure 1 and Figure 2 , the present utility model provides a high-frequency transparent array antenna, which includes a transparent flexible dielectric layer 1 and an array antenna; the array antenna includes an upper conductive line layer 2 and a lower conductive line layer 3, and the upper conductive line layer 2 and the lower conductive line layer 3 are respectively disposed on two side surfaces of the transparent flexible dielectric layer 1; the upper conductive line layer 2 includes an antenna portion, a transmission line 21 and a feed connection point 22, the antenna portion is composed of a plurality of array units to form an array, the array units are connected to the transmission line 21, and the transmission line 21 is connected to the feed connection point 22; the lower conductive line layer 3 is the ground plane of the array antenna.

[0020] In an embodiment of the present utility model, by adopting the transparent flexible dielectric layer 1 with a transparent and bendable flexible structure, the antenna can have good permeability and adaptability and can be bent to a certain extent according to the installation environment. The array antenna adopts a double-layer structure, wherein the upper conductive line layer 2 is the radiation layer of the antenna, and the lower conductive line layer 3 is the ground plane, responsible for grounding the antenna. In the upper conductive line layer 2, the antenna portion is composed of a plurality of array units to form an array structure, and the structures of the respective array units are the same. The array units with the same structure and the same size are arranged together according to a certain rule to form the antenna portion. The plurality of array units are respectively connected to the transmission line 21, and the transmission line 21 is then connected to the feed connection point 22. Together with the lower conductive line layer 3 on the other side of the transparent flexible dielectric layer 1, a complete transparent antenna structure is formed.

[0021] During operation, the array antenna receives electromagnetic waves and converts them into electrical signals, and transmits the electrical signals through the feed connection point 22; or receives electrical signals through the feed connection point 22 and radiates them as electromagnetic waves.

[0022] Preferably, the array unit is composed of four array sub-units, and each array sub-unit includes a pair of the radiation units 23 and impedance converters 24. The pair of radiation units 23 are symmetrically arranged and are respectively connected to the impedance converter 24, and the impedance converter 24 is connected to the transmission line 21 through a wire. In this embodiment, the array unit is composed of four array sub-units, and the four array sub-units are distributed in a rectangular structure and are respectively arranged at the four corners of the rectangular structure. Each array sub-unit is provided with a pair of radiation units 23. The pair of radiation units 23 are symmetrically arranged and are simultaneously connected to the impedance converter 24, and then the four array sub-units are respectively connected by wires and finally connected to the transmission line 21 through wires.

[0023] Preferably, the radiation unit 23, the impedance converter 24 and the transmission line 21 are all in a grid structure, and the feed connection point 22 is in a non-grid structure. In this embodiment, to ensure the transmittance of the antenna, all the lines of the radiation unit 23, the impedance converter 24 and the transmission line 21 are processed into a grid structure, making the lines thinner and the transmittance better. At the same time, to ensure the tightness of the connection and the feeding effect, the feed connection point 22 in this embodiment is not processed into a grid.

[0024] Preferably, the lower conductive line layer 3 is in a grid structure. In this embodiment, to ensure the transmittance of the antenna, the lower conductive line layer 3 also adopts a grid structure to increase the gap between the lines, reduce the line width and improve the light passing rate.

[0025] Preferably, the transparent flexible dielectric layer 1 includes but is not limited to PET, COP, and CPI.

[0026] Preferably, the materials of the array antenna include but are not limited to metal materials and non-metal conductive materials.

[0027] Preferably, the array antenna is formed on the transparent flexible dielectric layer 1 by an additive method or an etching subtraction method. In this embodiment, to ensure the transmittance of the antenna, the additive method or the etching subtraction method can be used for fine processing to ensure that the antenna can meet the usage requirements.

[0028] Preferably, the operating frequency of the array antenna is about 27 - 29 GHz, and its maximum gain can reach 15 dBi.

[0029] Compared with the prior art, the beneficial effects of the present utility model are as follows: The present utility model is reasonably designed and has a simple structure. By arranging an array antenna on the transparent flexible medium layer and using an array design, the gain of the antenna is improved and the signal transmission distance is increased. In addition, through the transparent design of the array antenna, some structures of the array antenna adopt a grid structure, and together with the transparent flexible medium layer, the transparency of the antenna is improved. Without affecting the aesthetics, multi-point layout can be carried out to meet the use requirements of high-frequency transparent antennas without loss of radiation performance.

[0030] The embodiments of the present utility model are given for purposes of illustration and description, and are not exhaustive or limit the present utility model to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present utility model, and to enable those of ordinary skill in the art to understand the present utility model and thus design various embodiments with various modifications suitable for specific purposes.

Claims

1. A high-frequency transparent array antenna, characterized in that, It includes a transparent flexible dielectric layer (1) and an array antenna; the array antenna includes an upper conductive circuit layer (2) and a lower conductive circuit layer (3), and the upper conductive circuit layer and the lower conductive circuit layer are respectively disposed on two side surfaces of the transparent flexible dielectric layer; the upper conductive circuit layer includes an antenna portion, a transmission line (21) and a feed connection point (22), the antenna portion is formed by an array of multiple array units, the array units are connected to the transmission line, and the transmission line is connected to the feed connection point; the lower conductive circuit layer is the ground plane of the array antenna.

2. The high-frequency transparent array antenna according to claim 1, wherein The array unit is composed of four array sub-units, and each array sub-unit includes a pair of radiation units (23) and an impedance converter (24). The pair of radiation units are symmetrically arranged and are respectively connected to the impedance converter, and the impedance converter is connected to the transmission line through a wire.

3. The high-frequency transparent array antenna according to claim 2, characterized in that, The radiation unit, the impedance converter and the transmission line are all in a grid structure, and the feed connection point is in a non-grid structure.

4. The high-frequency transparent array antenna according to claim 1, characterized in that The lower conductive circuit layer is in a grid structure.

5. The high-frequency transparent array antenna according to claim 1, characterized in that, The transparent flexible dielectric layer includes but is not limited to PET, COP, and CPI.

6. The high-frequency transparent array antenna according to claim 1, wherein The material of the array antenna includes but is not limited to metal materials and non-metal conductive materials.

7. The high-frequency transparent array antenna according to claim 1, characterized in that The array antenna is formed on the transparent flexible dielectric layer by an additive method or an etching subtraction method.

8. The high-frequency transparent array antenna according to claim 1, characterized in that The operating frequency of the array antenna is about 27 - 29 GHz, and its maximum gain can reach 15 dBi.

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