CN111541034B

CN111541034B - High-gain low-profile GPS solar cell antenna excited by adopting slot mode

Info

Publication number: CN111541034B
Application number: CN202010489927.1A
Authority: CN
Inventors: 呼文韬; 安文星; 李钏; 马凯学; 彭磊
Original assignee: Tianjin University; CETC 18 Research Institute
Current assignee: Cetc Blue Sky Technology Co ltd; Tianjin University
Priority date: 2020-06-02
Filing date: 2020-06-02
Publication date: 2022-02-01
Anticipated expiration: 2040-06-02
Also published as: CN111541034A

Abstract

The invention discloses a high-gain low-profile GPS solar cell antenna using slot mode excitation, belonging to the technical field of solar cell antennas, comprising: a dielectric plate, a radiation body and a feeding structure; it is characterized in that the radiation body and the feeding structure are located in On both sides of the dielectric plate, the radiating body is composed of 5 strings of solar cells, which are excited by the slot mode. The 5 strings of solar cells are arranged in parallel to form four "H" type excitation slots, and the excitation feeder is divided into four. The power division network feeds the excitation slot simultaneously, and the low-pass filter is coplanar with the feeder. The invention utilizes 4 gaps between 5 strings of solar cells for excitation design to achieve high gain radiation performance, reduces the section height of the antenna at the same time, and simplifies the structural design of the antenna. The GPS solar cell antenna can achieve the purpose of communication for devices with high gain requirements, and is suitable for high-gain application environment requirements.

Description

High-gain low-profile GPS solar cell antenna excited by adopting slot mode

Technical Field

The invention belongs to the technical field of solar cell antennas, and particularly relates to a high-gain low-profile GPS solar cell antenna excited in a gap mode.

Background

The traditional GPS solar cell antenna adopts a layered structure design, a solar cell sheet serving as a radiation main body is arranged above a feed layer, and a feed line and a floor of a feed point layer are respectively positioned on two sides of a lower-layer dielectric plate.

Although the purpose of using the solar cell as the radiation main body of the GPS antenna can be achieved by the layered structure design, the GPS solar cell antenna adopting the layered structure design has a high profile height, and has a certain limitation on the practical application range of the GPS solar cell antenna.

Disclosure of Invention

The invention provides a high-gain low-profile GPS solar cell antenna excited by adopting a gap mode, aiming at solving the technical problems in the prior art, and the high-gain low-profile GPS solar cell antenna is designed by utilizing 4 gaps among 5 strings of solar cell strings for excitation so as to realize high-gain radiation performance, reduce the profile height of the antenna and simplify the structural design of the antenna. The GPS solar cell antenna can achieve the purpose of communicating devices with high gain requirements, and is suitable for the application environment requirements of high gain.

The invention aims to provide a high-gain low-profile GPS solar cell antenna excited by adopting a slot mode, which comprises: the antenna comprises a dielectric plate, a radiation main body and a feed structure; the radiation main body and the feed structure are positioned on two sides of the dielectric slab, the radiation main body is composed of 5 strings of solar cells, the solar cells are excited in a gap mode, the 5 strings of solar cells are arranged in parallel to form four H-shaped excitation gaps, the excitation feeder line adopts a one-to-four power division network to simultaneously feed the excitation gaps, and the low-pass filter is coplanar with the feeder line.

Further, the thickness of the dielectric plate is 0.762 millimeter.

Still further, the dimensions of the string of solar cells are 158.35 millimeters by 40.8 millimeters.

Furthermore, the working frequency of the GPS solar cell antenna is 1.575 GHz.

Further, the dimensions of the trenched floor were 82 mm x 86.5 mm.

Further, the GPS solar cell antenna height is 0.762 millimeters.

The invention has the advantages and positive effects that:

by adopting the technical scheme, the solar cell antenna has better radiation performance and effectively reduces the section height of the solar cell antenna. Meanwhile, the structural design of the antenna is simplified by adopting the gap feeding mode, and compared with a common GPS solar cell antenna, the GPS solar cell antenna has higher gain and solar cell piece distribution rate, and is favorable for the practical application of the GPS solar cell antenna under the high-gain requirement.

Drawings

FIG. 1 is a block diagram of a preferred embodiment of the present invention;

FIG. 2 is a left side view of the preferred embodiment of the present invention;

FIG. 3 is a top view of a preferred embodiment of the present invention;

FIG. 4 is a bottom view of the preferred embodiment of the present invention;

FIG. 5 is a diagram of a first simulation result of GPS solar cell antenna performance in accordance with a preferred embodiment of the present invention;

FIG. 6 is a diagram of a second simulation result of the performance of a GPS solar cell antenna in a preferred embodiment of the present invention.

Wherein: 1. a solar cell string; 2. a dielectric plate; 3. a direct current feeder; 4. a low-pass filter; 5. and a feeder line.

Detailed Description

In order to further understand the contents, features and effects of the present invention, the following embodiments are illustrated and described in detail with reference to the accompanying drawings:

as shown in fig. 1 to 6, the technical solution of the present invention is:

a high-gain low-profile GPS solar cell antenna excited by adopting a slot mode adopts the slot mode to feed, effectively reduces the profile height of the antenna, utilizes the slot between solar cell strings to feed, realizes the high-gain radiation performance and simplifies the structural design of the antenna. The GPS solar cell antenna structure is shown in fig. 3. The GPS solar cell antenna mainly works at 1.575GHz, the size of each solar cell string is 158.35 mm multiplied by 40.8 mm, the size of the grooved floor is 82 mm multiplied by 86.5 mm, and the height of the antenna is 0.762 mm.

Referring to fig. 1 to 4, the preferred embodiment mainly includes: the dielectric plate 2, the radiation main body and the feed structure; the radiation main body comprises a solar cell string 1 and a direct current feeder 3; the feed structure comprises a low pass filter 4 and a feed line 5.

The invention utilizes the slot between the solar cell strings to carry out feed excitation, not only can reduce the section height of the antenna, but also can realize high-gain radiation performance by adopting a one-to-four power division network to carry out excitation simultaneously. Meanwhile, the solar cell string constructs an excitation slit groove, so that the structural design of the antenna is simplified, and the practical application of the GPS solar cell antenna is facilitated.

The radiation main body of the GPS solar cell antenna in the preferred embodiment is composed of 5 strings of solar cells, and is excited in a slot mode, and the radiation main body and the feed structure are respectively located on both sides of a dielectric plate with a thickness of 0.762 mm, as shown in fig. 3 and 4. Wherein, 5 strings of solar cells positioned on the upper side of the dielectric plate are arranged in parallel to form four H-shaped gaps as excitation gaps of the GPS solar cell antenna, as shown in FIG. 3; the excitation feeder adopts a one-to-four power division network to simultaneously feed the H-shaped slot, and the low-pass filter is coplanar with the feeder and positioned at the lower side of the dielectric plate, as shown in figure 4.

The preferred embodiment adopts a slot coupling feed mode to realize impedance matching design, a main radiation structure consists of 5 strings of 158.35 mm multiplied by 40.8 mm solar cell strings, and the solar cell strings are connected together in a parallel connection mode.

Fig. 5 and 6 show the radiation performance of the GPS solar cell antenna. As shown in fig. 5, the GPS solar cell antenna covers a frequency band of 1.51GHz to 1.78GHz, realizes a 16.41% relative bandwidth matching design, and has a peak gain at a frequency point of 1.6GHz, and the gain peak is 8dBi, which can achieve better radiation performance. .

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications, equivalent changes and modifications made to the above embodiment according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.

Claims

1. A high-gain low-profile GPS solar cell antenna excited with a slot mode, comprising: the antenna comprises a dielectric plate, a radiation main body and a feed structure; the low-pass filter is characterized in that the radiation main body and the feed structure are positioned on two sides of the dielectric slab, the radiation main body is composed of 5 strings of solar cells, the solar cells are excited in a gap mode, the 5 strings of solar cells are arranged in parallel to form four H-shaped excitation gaps, the excitation feeder line adopts a one-to-four power division network to simultaneously feed the excitation gaps, and the low-pass filter is coplanar with the feeder line.

2. The high gain low profile GPS solar cell antenna with slot mode excitation of claim 1, wherein the dielectric plate has a thickness of 0.762 millimeter.

3. The high-gain low-profile GPS solar-cell antenna excited by a slot mode according to claim 1 or 2, wherein the solar-cell string has dimensions of 158.35 mm x 40.8 mm.

4. The high-gain low-profile GPS solar-cell antenna excited by a slot mode according to claim 3, wherein the operating frequency of the GPS solar-cell antenna is 1.575 GHz.

5. The high gain low profile GPS solar cell antenna with slot mode excitation of claim 4, wherein the trenched floor size is 82 mm x 86.5 mm.

6. The high gain low profile GPS solar cell antenna with slot mode excitation of claim 1, wherein the GPS solar cell antenna height is 0.762 millimeters.