Ultrashort-wave single-channel direction-finder antenna array

A direction-finding antenna and single-channel technology, which is applied to the structural connection of antenna arrays, antennas, and antenna grounding switches, can solve problems such as large differences and large direction-finding errors, and achieve the effects of light weight, simple output interface, and stable performance

Active Publication Date: 2018-04-20
10TH RES INST OF CETC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the great difference between the actual installation environment and the standard test site (i.e. non-reflection environment), large direction finding errors will occur no matter whether the single-channel correlation interferometer method or the multi-channel interferometer method is used

Method used

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  • Ultrashort-wave single-channel direction-finder antenna array

Examples

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Embodiment Construction

[0018] refer to figure 1 . In the embodiment described below, an ultrashort wave single-channel direction-finding antenna array includes: 2-5 active folding antennas with a low frequency range of 30MHz-600MHz, and 2-5 printed antennas with a high frequency range of 600MHz-3000MHz Microstrip antennas and RF switches. The two frequency band antennas each output 2-5 RF signals to the RF switch matrix, and the RF switch matrix switches the low and high frequency bands to 2-5 power divider input terminals through the RF switch, and selects the low frequency band or high frequency band antenna at the same time Input to the input terminal of the power divider, the power divider divides each channel of the RF switch output signal into two channels, one output to the 0°, 90°, 180°, 270° phase shifter, the phase shifter passes the 180° power division Combination of coupler and 90° coupler to achieve 0° / 90° / 180° / 270° phase shift in the 30MHz-3000MHz working frequency band, and the inpu...

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Abstract

The present invention discloses an ultrashort-wave single-channel direction-finder antenna array. The objective of the invention is to provide a multi-platform and foldable single-channel direction-finder antenna array with frequencies capable of covering an ultrashort-wave range. The technical scheme of implementation method comprises the following steps that: each of antennas with two frequencyranges outputs 2-5 paths of radio frequency signals to a radio frequency switch matrix, the radio frequency switch matrix switches low and high frequency ranges through a radio frequency switch to 2-5power divider input terminals, and selects and inputs an antenna with a low frequency range or an antenna with a high frequency range at the same time to the power divider input terminals, signals output by the radio frequency switch in each path are divided into two paths by the power dividers, four phase shifters are output in one path, input and output terminals of the phase shifters are switched by the radio frequency switch, signals in one path are output to a combiner 2; signals in the other path are output to a combiner 1, the 2-5 paths of antenna signals are combined into one omnidirectional reference signal which is transmitted into the phase shifter and the combiner 2, and the combiner 2 combines the output signals of the phase shifter and the output signals of the combiner 1 into single-channel radio frequency signals.

Description

technical field [0001] The invention relates to an ultrashort-wave single-channel direction-finding antenna array. More specifically, it is the design of a direction-finding portable antenna array based on a single-channel correlation interferometer for ultra-short-wave electromagnetic wave signals. Background technique [0002] With the advancement of electronic technology, the implementation methods of various direction finding systems will be different and the working performance will continue to improve. Among many direction finding systems, interferometer direction finding technology has high accuracy, small polarization error, high direction finding sensitivity, direction finding time period, certain anti-wave front distortion ability, strong site adaptability, reliable operation and easy maintenance Etc. However, the traditional interferometer direction finder has the problems of large number of channels and large resource consumption. In order to overcome these sh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q21/00H01Q1/50
CPCH01Q1/50H01Q21/00
Inventor 陈亮
Owner 10TH RES INST OF CETC
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