Airborne double-frequency antenna applied to L/C frequency band

A dual-frequency antenna and frequency band technology, applied in the field of radio frequency communication, can solve the problems of small beam coverage, complex structure, and single communication channel, and achieve the effect of increasing the communication frequency range, improving the coverage area, and reducing the volume of the antenna

Inactive Publication Date: 2018-06-19
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an airborne dual-frequency antenna applied to the L / C frequency band, which solves the problems of single communication channel, small beam coverage, complex structure and poor reliability, and large antenna volume of traditional unmanned aerial vehicle antennas.

Method used

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  • Airborne double-frequency antenna applied to L/C frequency band
  • Airborne double-frequency antenna applied to L/C frequency band
  • Airborne double-frequency antenna applied to L/C frequency band

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Embodiment 1

[0024] Adopt a kind of airborne dual-frequency antenna applied to the L / C frequency band described in the present invention, wherein the antenna return loss characteristic curve is as follows Figure 4 , Figure 5 As shown, the characteristic curve of the antenna pattern is as follows Figure 6 , Figure 7 As shown, the gain inconsistency characteristics of the horizontal pattern of the antenna are as follows Figure 8 , Figure 9 shown. according to Figure 4 , Figure 5 , the return loss of the antenna at 1740MHz-1880MHz and 4.4GHz-4.8GHz is below -10dB, and the antenna communication under dual frequency is realized. according to Figure 6 , Figure 7 , it can be seen that the antenna has formed a very good vertical polarization. according to Figure 8 , Figure 9 , it can be seen that at high frequencies, the horizontal out-of-roundness of the antenna is less than 3dB, and at low frequencies, the horizontal out-of-roundness of the antenna is less than 0.7dB. The ...

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Abstract

The invention discloses an airborne double-frequency antenna applied to an L / C frequency band, which employs a double-side microstrip antenna structure. The airborne double-frequency antenna comprisestwo groups of radiation microstrip oscillators with different frequency bands and two corresponding groups of coupling feeding networks with different frequency bands, the radiation microstrip oscillators and the coupling feeding networks are printed on the same PCB, the two radiation microstrip oscillators both employ the same broadband microstrip symmetrical oscillator structures and are printed on the front surface of the PCB, and the two feeding networks each comprise an input port and two coupling feeding ports and are printed on the backside of the PCB. According to the airborne double-frequency antenna, the communication frequency band width and the communication reliability of the antenna are improved in performance, the gain consistency of a horizontal directional diagram is improved, the structure of the antenna is simple, and stability and reliability are achieved.

Description

technical field [0001] The invention belongs to the technical field of radio frequency communication, and in particular relates to an airborne dual-frequency antenna applied in the L / C frequency band. Background technique [0002] In the UAV communication system, due to the limited size of the UAV body and the high concealment of the communication frequency band, multi-channel communication is required for the communication frequency band of this type of airborne antenna, and there are also high requirements for the miniaturization of the antenna size. There are few available frequency bands for carrying antennas, and the miniaturization of antennas has always been a difficult problem to solve. Traditional drone-mounted antennas mostly use metal structure antennas, and multiple antennas are installed in the aircraft to solve their concealment and multi-channel problems, but this is limited. It is very difficult in terms of the carrying space and the weight of the fuselage. ...

Claims

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Application Information

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IPC IPC(8): H01Q1/28H01Q1/38H01Q1/50H01Q5/10H01Q5/20H01Q5/50
CPCH01Q1/285H01Q1/38H01Q1/50H01Q5/10H01Q5/20H01Q5/50
Inventor 王枭谭飞孙琳琳
Owner NANJING UNIV OF SCI & TECH
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