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Airborne electric small short-wave antenna impedance characteristic optimization method and broadband short-wave antenna

A technology of short-wave antenna and impedance characteristics, which is applied in the design field of improving the impedance characteristics of airborne small-coupling short-wave antennas. It can solve the problems of smaller impedance and smaller size of short-wave antennas, and achieve lower profile heights, significant market prospects and economic benefits. benefit effect

Active Publication Date: 2020-06-19
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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  • Airborne electric small short-wave antenna impedance characteristic optimization method and broadband short-wave antenna
  • Airborne electric small short-wave antenna impedance characteristic optimization method and broadband short-wave antenna
  • Airborne electric small short-wave antenna impedance characteristic optimization method and broadband short-wave antenna

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Embodiment Construction

[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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Abstract

The invention belongs to an airborne short-wave communication antenna, and provides an airborne electric small short-wave antenna impedance characteristic optimization method and a broadband short-wave antenna, and the method comprises the following steps: S1, designing a conventional airborne electric small short-wave antenna A through employing electromagnetic simulation software HFSS; S2, adjusting the size of the antenna A to enable the working frequency band of the airborne electric small short-wave antenna to be within 2-30MHz; S3, taking the airborne electric small short-wave antenna Adesigned in the step S1 as a center, and adding eight electric small short-wave antennas as parasitic units to form a 3*3 array form; S4, designing a parasitic unit, enabling the structure of the parasitic unit to be the same as the structure of the airborne electric small short-wave antenna A, and deleting the feed port; S5, setting the distance between the eight parasitic units and the centers of two adjacent units of the airborne electric small short-wave antenna A to be d; and S6, adjusting the coupling between the parasitic unit and the airborne electric small short-wave antenna A by adjusting the size of d, and enabling the impedance of the port of the antenna A to reach a state of being easy to match 50 ohms in a broadband range.

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...

Claims

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Application Information

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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
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