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A dual frequency antenna

A dual-frequency antenna and antenna technology, applied in the field of antennas, can solve the problem of not being able to support the working frequency band of the Beidou radio positioning system at the same time, and achieve wide impedance characteristics, right-hand circular polarization axial ratio characteristics, high gain characteristics, and stable phase center. Effect

Active Publication Date: 2018-06-26
NO 722 RES INST OF CHINA SHIPBUILDING IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to solve the problem that circularly polarized antennas in the prior art cannot simultaneously support the B1 and B3 operating frequency bands of the Beidou radio positioning system in applications where the stability of the co-phase center is relatively high, the embodiment of the present invention provides a dual-frequency antenna

Method used

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  • A dual frequency antenna
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Embodiment

[0039] A dual-frequency antenna provided by an embodiment of the present invention, such as Figure 1-2 As shown, including the first frequency band antenna and the second frequency band antenna;

[0040] Specifically, the first frequency band antenna includes: a first radiation patch 106, a first floor layer 105, and a first feed network 100 for working in the B1 working frequency band of the Beidou second-generation satellite positioning system; the second frequency band antenna includes: It is used in the second radiation patch 104, the second floor layer 102 and the second feeding network 101 working in the B3 working frequency band of the Beidou second-generation satellite positioning system.

[0041] Specifically, the first radiation patch 106 and the first bottom layer 105 are circular, and the second radiation patch 104 and the second bottom layer 102 are circular.

[0042]Further, the first radiating patch 106 is provided with three first feeding points 108, and the ...

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Abstract

The invention discloses a double-band antenna, which belongs to the technical field of antennas. The double-band antenna comprises a first frequency-band antenna and a second frequency-band antenna. The first frequency-band antenna comprises a first radiating patch, a first bottom plate layer and a first feed network. The second frequency-band antenna comprises a second radiating patch, a second bottom plate layer and a second feed network. The first radiating patch and the first bottom plate layer are circular. The second radiating patch and the second bottom plate layer are circular ring-shaped. The first radiating patch is provided with three first feed points. The second frequency-band antenna further comprises a third bottom plate layer and a fourth bottom plate layer. The first frequency-band antenna further comprises a fifth bottom plate layer and a sixth bottom plate layer. The first feed network is installed between the fifth bottom plate layer and the sixth bottom plate layer. The second feed network is installed between the third bottom plate layer and the fourth bottom plate layer. The third bottom plate layer is tightly pressed against one side of the second bottom plate layer. The fifth bottom plate layer is tightly pressed against the fourth bottom plate layer. The second radiating patch, the first bottom plate layer and the second bottom plate layer are disposed concentrically. The first radiating patch and the first bottom plate layer are disposed concentrically.

Description

technical field [0001] The invention relates to the technical field of antennas, in particular to a dual-frequency antenna. Background technique [0002] With the wide application of various advanced satellite positioning systems such as the Global Positioning System (GPS) and Beidou, more and more attention has been paid to the accuracy of radio positioning and direction finding using satellite positioning systems. [0003] In the process of using the satellite positioning system for radio positioning and direction finding, the antenna is responsible for receiving the signal of the satellite positioning system and plays a very important role. At present, a domestically developed circularly polarized antenna with a stable phase center adopts the common feeding method of three feeding points for feeding, works in the S-band, and has a return loss of S 11 The relative bandwidth covered is about 46.8%, the relative bandwidth covered by the circular polarization axis ratio in t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q1/38H01Q1/50H01Q15/24H01Q21/30
Inventor 张雄陈聪孙维忠王波梁艺李成全杨东昊
Owner NO 722 RES INST OF CHINA SHIPBUILDING IND
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