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Microwave modular circuit-based radio antenna array receiver system of VHF (very high frequency) band from 55 MHz to 65 MHz

A modular, antenna array technology, applied in diversity/multi-antenna systems, transmission systems, electrical components, etc., can solve problems such as the establishment of the solar CME radio radiation model and Jupiter radio radiation mechanism model, etc., and the process cost is cheap. , Improve the system sensitivity and simplify the design effect

Active Publication Date: 2015-06-10
YUNNAN ASTRONOMICAL OBSERVATORY CHINESE ACAD OF SCI
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AI Technical Summary

Problems solved by technology

At present, they and the LOFAR and SKA Australian programs under construction can provide very low frequency broadband observations, but have not systematically carried out interferometric observations, and have not yet reached the ability to establish solar CME radio radiation models and Jupiter radio radiation mechanism models

Method used

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  • Microwave modular circuit-based radio antenna array receiver system of VHF (very high frequency) band from 55 MHz to 65 MHz
  • Microwave modular circuit-based radio antenna array receiver system of VHF (very high frequency) band from 55 MHz to 65 MHz
  • Microwave modular circuit-based radio antenna array receiver system of VHF (very high frequency) band from 55 MHz to 65 MHz

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Embodiment Construction

[0022] Such as figure 1 , figure 2 Shown, and shown in table 1, 2, 4, 5, 6, a kind of VHF section 55-65MHz radio antenna array receiver system based on microwave modular circuit, the present invention is characterized in that: this system consists of two first-level bands A pass filter, two primary amplifiers, two secondary band-pass filters, a phase-shifting signal synthesis module, a secondary amplifier and a third-stage amplifier are connected in sequence; the band-pass filter, amplifier and phase-shifting signal synthesis module Microwave modular circuits are used, the system adopts the balanced input-unbalanced output mode, and the signals collected by the two arms of the receiving array antenna are converted into single-channel signal output;

[0023] The present invention adopts the first-stage bandpass filter (model: BPF-C45+) to filter the signals collected by the two arms of the sub-antenna, and select the signal in the range of 30-70MHz. In the first stage, the n...

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Abstract

A microwave modular circuit-based radio antenna array receiver system of VHF (very high frequency) band from 55 MHz to 65 MHz is composed of two primary band-pass filters, two primary amplifiers, two secondary band-pass filters, a phase shift signal synthesizer module, a secondary amplifier and a tertiary amplifier connected in order; the band-pass filters, the amplifiers and the phase shift signal synthesizer module are all microwave modular circuits. The system is simple in design, convenient to adjust, small in size and low in cost.

Description

technical field [0001] The invention relates to the field of radio astronomy observation in the VHF band, in particular to an analog receiving system suitable for a large radio synthetic aperture antenna array in the VHF band. Background technique [0002] The electromagnetic radiation of celestial bodies reflects the important characteristics and states of radiating bodies. Radio observation is a very important means for studying the sun, the earth, planets and celestial bodies outside the solar system. The very low frequency radio radiation with a frequency below 80MHz has provided a large amount of information about the radio and eruptions of the sun and planets in the solar system, and for the radio observation of celestial bodies outside the solar system, the very low frequency is not a simple extrapolation of the electromagnetic wave bands that humans have been able to observe now , but an exploratory space of great significance and importance. This is because basical...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/08H04B1/10
Inventor 董亮周屹周绍红冯迅汪敏施硕彪
Owner YUNNAN ASTRONOMICAL OBSERVATORY CHINESE ACAD OF SCI
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