A Method for Optimizing Impedance Characteristics of an Airborne Electric Small Shortwave Antenna and a Broadband Shortwave Antenna
A short-wave antenna and broadband short-wave technology, which is applied in the directions of individually powered antenna arrays, antennas, antenna arrays, etc., can solve the problems of smaller size and smaller impedance of short-wave antennas, and achieve reduced profile height, significant market prospects and economic benefits. Effect
Active Publication Date: 2021-07-16
XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
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Problems solved by technology
[0005] The object of the present invention is: to propose a method for optimizing the impedance characteristics of an airborne electric small short-wave antenna and a wide-band short-wave antenna, to solve the problem of a sharp decrease in impedance caused by the reduction in the size of the short-wave antenna
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[0029] The present invention adopts a design method for improving the impedance characteristics of the airborne electrically small coupled short-wave antenna, and by adding the same parasitic unit as the electrically small coupled short-wave antenna, a stronger coupling is generated between the units, and the strength of the mutual coupling is reasonably adjusted. It can effectively improve the radiation impedance of the electrically small coupling short-wave antenna, reduce the design difficulty of the short-wave antenna tuning system, increase the effective radiation gain of the antenna, and thereby improve the communication distance of the short-wave radio station. At the same time, the capacitive inductor is loaded through the monopole antenna, so that the antenna can achieve resonance in an electrically small size and reduce the height of the antenna section.
[0030] A method for optimizing the impedance characteristics of an airborne electric small short-wave antenna com...
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The invention belongs to an airborne short-wave communication antenna, and provides a method for optimizing the impedance characteristics of an airborne electric small short-wave antenna and a broadband short-wave antenna. The method includes the following steps: S1, using electromagnetic simulation software HFSS to design a conventional airborne small electric short-wave antenna A; S2 , adjust the size of the antenna A, so that the working frequency band of the airborne small short-wave antenna is within 2 ~ 30MHz; S3, centering on the airborne small short-wave antenna A designed in S1, add eight small electric short-wave antennas as parasitic units to form 3 ×3 array form; S4, design the parasitic unit so that the structure of the parasitic unit is the same as that of the airborne electric small short-wave antenna A, and the feed port is deleted; S5, the eight parasitic units are adjacent to the airborne electric small short-wave antenna A The distance between the centers of each unit is set to d; S6, by adjusting the size of d, adjust the coupling between the parasitic unit and the airborne electric small short-wave antenna A, and make the impedance of the antenna A port reach 50Ω which is easy to match in the wide frequency range state.
Description
technical field [0001] The invention belongs to an airborne short-wave communication antenna, and relates to a design method for improving the impedance characteristics of an airborne electrically small coupling short-wave antenna. Background technique [0002] The short-wave radio station consists of a short-wave radio transceiver, an antenna tuning system and a short-wave antenna. As the front end of the airborne shortwave communication system, the shortwave antenna is the "eyes and ears" of the entire shortwave communication system, and its performance directly affects the performance of the entire airborne shortwave communication system. [0003] The airborne short-wave antenna has low frequency and long wavelength, and the antenna in the form of a vibrator is generally used, such as cable antenna, probe antenna, top antenna, shunt antenna, etc. with better performance, but it is limited by the aerodynamic and structural conditions of the current advanced aircraft , the...
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IPC IPC(8): H01Q21/06H01Q21/00H01Q1/38H01Q1/48H01Q1/50H01Q1/28G06F30/20
CPCH01Q1/285H01Q1/38H01Q1/48H01Q1/50H01Q21/0087H01Q21/065
Inventor 江莉秦涛杨沛斌杨崇刚张昆
Owner XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA