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Low-noise front-end receiver of aircraft

A receiving front-end, low-noise technology, applied in electrical components, transmission systems, etc., can solve problems such as low sensitivity and success rate, application requirements cannot be met, and achieve the effect of ensuring receiving sensitivity, high sensitivity, and low noise

Active Publication Date: 2015-02-18
SHANGHAI SATELLITE ENG INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the shortcomings of the prior art in terms of receiving gain and noise figure performance, etc., resulting in low sensitivity and success rate, and applications that cannot meet the requirements, the purpose of the present invention is to provide a low-noise receiving front-end machine for aircraft

Method used

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Embodiment Construction

[0030] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0031] figure 1 For an embodiment of the aircraft low-noise receiving front-end machine of the present invention, the receiving front-end machine includes:

[0032] Receiving antenna 101 : connected to the low noise amplifier 102 , used to receive the report signal (ie, uplink signal) sent by the uplink ground data collection platform, and send the received uplink signal to the low noise amplifier 102 .

[0033] Low-noise amplifier module 102: connected to the receiving antenna 101 through a radio frequency cable and the other end is connected to the image rejection dielectric filter 103, after the low-noise amplifier module 102 performs two-stage low-noise amplification on the signal sent by the receiving antenna 101, The amplified signal is sent to the image rejection dielectric filter 103 .

[0034] Image rejection dielectric fil...

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Abstract

The invention discloses a low-noise front-end receiver of an aircraft, which comprises a receiving antenna, a low-noise amplifier module, an image rejection medium filter module, a double-balance frequency mixer module, a low-pass filter module, a first intermediate-frequency amplifier module, a temperature compensation attenuator module, a gain adjustment and control module, an LC (inductance and capacitance) low-pass filter module, a second intermediate-frequency amplifier module and a local frequency source module. By the aid of the low-noise front-end receiver of the aircraft, the problem of the bottle neck of gain and noise coefficient performances of an existing low-noise front-end receiver of an aircraft is solved, data receiving sensitivity and success rate are improved, and an application effect is achieved.

Description

technical field [0001] The invention relates to an aircraft receiving front-end machine, in particular to an aircraft low-noise receiving front-end machine. Background technique [0002] The low-noise receiving front-end of the aircraft is an important part of the receiver. It is used to receive and amplify signals with weak signal strength (such as signals with a signal size of -131dbm to -80dbm) sent from the ground. The low-noise receiving front-end unit of the aircraft is mainly used to receive various meteorological, hydrological, resource distribution, ocean buoys, forest fires and other data obtained by ground weather stations. [0003] The particularity of the signal received by the low-noise receiving front-end requires it to have the characteristics of low noise, high sensitivity and high gain. Generally speaking, the lower the noise figure and the higher the sensitivity, the more serious the impact of the background noise on the reception of useful signals. There...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/10H04B1/16
Inventor 张宏伟王艳军
Owner SHANGHAI SATELLITE ENG INST
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