CN111541034A - High-gain low-profile GPS solar cell antenna excited by adopting slot mode - Google Patents

Abstract

The invention discloses a high-gain low-profile GPS solar cell antenna excited by adopting a gap mode, which belongs to the technical field of solar cell antennas and comprises the following components: 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. The invention realizes high-gain radiation performance by utilizing 4 gaps among 5 strings of solar cells for excitation design, reduces the section height of the antenna and simplifies 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.

Description

High Gain Low Profile GPS Solar Cell Antenna Using Slot Mode Excitation

technical field

The invention belongs to the technical field of solar cell antennas, and in particular relates to a high-gain low-profile GPS solar cell antenna using slot mode excitation.

Background technique

The traditional GPS solar cell antenna adopts a layered structure design. The solar cell as the main body of radiation is placed above the feeding layer, and the feeder and the floor of the feeding point layer are located on both sides of the lower dielectric plate.

Although this layered structure design can realize the purpose of using the solar cell as the main radiation body of the GPS antenna, the section height of the GPS solar cell antenna designed with this structure is relatively high, which has certain limitations on the practical application range of the GPS solar cell antenna. limit.

SUMMARY OF THE INVENTION

In order to solve the technical problems existing in the known technology, the present invention provides a high-gain low-profile GPS solar cell antenna using slot mode excitation, and uses four slots between five solar cell strings for excitation design to achieve high-gain radiation performance , while reducing the section height of the antenna and simplifying the structural design of the antenna. The GPS solar cell antenna can achieve the purpose of communicating with devices with high gain requirements, and is suitable for high-gain application environment requirements.

The purpose of the present invention is to provide a high-gain low-profile GPS solar cell antenna using slot mode excitation, including: a dielectric plate, a radiation body and a feeding structure; the radiation body and the feeding structure are located on both sides of the dielectric plate, and the radiation The main body consists 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. feed, and the low-pass filter is coplanar with the feed.

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

Further, the size of the solar cell string is 158.35 mm×40.8 mm.

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

Going a step further, the grooved floor measures 82mm x 86.5mm.

Further, the height of the GPS solar cell antenna is 0.762 mm.

The advantages and positive effects that the present invention has are:

By adopting the above technical solutions, the present invention has better radiation performance and effectively reduces the section height of the solar cell antenna. At the same time, the use of this slot feeding method simplifies the structure design of the antenna. Compared with the general GPS solar cell antenna, the GPS solar cell antenna has higher gain and solar cell sheet distribution rate, which is beneficial to the GPS solar cell antenna. Practical applications under high gain requirements.

Description of drawings

1 is a structural diagram of a preferred embodiment of the present invention;

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

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

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

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

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

Among them: 1. Solar cell string; 2. Dielectric panel; 3. DC feeder; 4. Low-pass filter; 5. Feeder.

Detailed ways

In order to further understand the content of the invention, features and effects of the present invention, the following embodiments are exemplified and described in detail with the accompanying drawings as follows:

As shown in Figure 1 to Figure 6, the technical solution of the present invention is:

A high-gain low-profile GPS solar cell antenna using slot mode excitation, using slot mode for feeding, effectively reducing the section height of the antenna, and using the gap between solar cell strings for feeding, realizing high-gain radiation performance, while simplifying the structural design of the antenna. The structure of the GPS solar cell antenna is shown in Figure 3. The GPS solar cell antenna mainly works at 1.575GHz, the size of each string of solar cells is 158.35 mm × 40.8 mm, the size of the slotted floor is 82 mm × 86.5 mm, and the height of the antenna is 0.762 mm.

Referring to FIGS. 1 to 4 , the preferred embodiment mainly includes: a dielectric plate 2 , a radiation body and a feeder structure; the radiation body includes a solar cell string 1 and a DC feeder 3 ; the feeder structure includes a low-pass filter 4 and a feeder 5 .

The invention utilizes the slits between the solar cell strings for feed excitation, which can not only reduce the section height of the antenna, but also achieve high-gain radiation performance by using a one-to-four power division network for simultaneous excitation. At the same time, an excitation slot is constructed in the solar cell string, which simplifies the structural design of the antenna and is beneficial to the practical application of the GPS solar cell antenna.

The radiating body of the GPS solar cell antenna in this preferred embodiment consists of 5 strings of solar cells, which are excited by the slot mode. The radiating body and the feeding structure are located on both sides of the dielectric plate with a thickness of 0.762 mm, as shown in Figures 3 and 3. 4 shown. Among them, the 5 strings of solar cells located on the upper side of the dielectric plate are arranged in parallel to form four "H"-shaped slots, which are used as excitation slots for the GPS solar cell antenna, as shown in Figure 3; the excitation feeder adopts a one-to-four power division network to " The H"-shaped slot is fed simultaneously, and the low-pass filter is coplanar with the feed line and is located on the underside of the dielectric plate, as shown in Figure 4.

In this preferred embodiment, the impedance matching design is realized in the form of slot coupling feeding. The main radiation structure is composed of 5 strings of 158.35 mm × 40.8 mm solar cells, which are connected in parallel. This design method is not only limited in The flat surface of the dielectric plate improves the distribution rate of solar cells, and the use of slot mode for antenna excitation reduces the section height of the antenna and reduces the size of the antenna, which is beneficial to the practical application of GPS solar cell antennas.

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

The above is only the preferred embodiment of the present invention, and does not limit the present invention in any form. Any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention belong to the present invention. within the scope of the technical solution of the invention.

Claims (6)

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.

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