Channel-selectable radio frequency front end (RFFE) applicable to near space environment

A near space, radio frequency front-end technology, applied in radio frequency front-end device, radio frequency front-end field

Active Publication Date: 2013-07-03
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004]2. The airborne receiving front-end adopts broadband filtering, the channel selection performance is poor, and the frequency band utilization rate is not high
[0005]3. Duplexers, coaxial electronic switches and other components required for the RF front-end to adapt to the low-pressure environment in the adjacent space need to be imported, which is extremely expensive and prohibited Shipping products, supply cannot be guaranteed

Method used

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  • Channel-selectable radio frequency front end (RFFE) applicable to near space environment
  • Channel-selectable radio frequency front end (RFFE) applicable to near space environment

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Embodiment Construction

[0021] Reference figure 1 , figure 2 . The invention consists of an electronic switch 1, a duplexer 2, a low noise amplifier 3, a temperature compensation YIG filter 4, a working frequency control microcontroller 5, an airtight box structure 6, a shielding box 7, a cover plate 8, a gas valve 9, a high It is composed of a frequency airtight connection socket 10 and a low frequency airtight socket 11. figure 1 It is a block diagram of the electrical principle of the present invention. figure 1 Connect the line.

[0022] The function of the electronic switch 1 is to select the radio frequency signals of the antennas in different positions and connect them to the input and output ports 1 of the duplexer 2. The function of the duplexer 2 is to perform broadband filtering on the received radio frequency signal and output it to the low noise amplifier 3, and to filter the transmitted radio frequency signal and output it to the electronic switch 1. The low noise amplifier 3 amplifi...

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Abstract

The invention discloses a channel-selectable radio frequency front end (RFFE) for a near space environment and relates to a frequency-controllable RFFE applicable to the near space environment in the measuring and control communication field. The RFFE comprises an electronic switch, a duplexer, a low noise amplifier (LNA), an Yttrium-Iron-Garnet (YIG) filter, a working frequency control singlechip, an airtight box body and the like. The frequency-controllable lossless transmission of RF signal within a broadband range in the near space environment, which cannot be completed by traditional RFFEs, is realized by the RFFE provided by the invention, and the RFFE improves the anti-interference capability of a measuring and control system, the collaborative reconnaissance capability in the samearea and the near space application capability. Therefore, the RFFE device is quite suitable for measuring and control systems, such as an aircraft measuring and control system and the like, which have special requirements on the near space environment, the system anti-interference capability, the miniaturization of onboard equipment and the like.

Description

technical field [0001] The invention relates to a radio frequency front-end adaptable to the near space environment in the field of communication measurement and control, and is particularly suitable for use as a radio frequency front-end device in measurement and control systems such as aircraft measurement and control for continuous radio frequency signal transmission under high-altitude and low-pressure conditions. Background technique [0002] At present, the airborne RF front-end of the domestic UAV measurement and control system has the following defects in performance. [0003] 1. The RF front-end has poor adaptability to the space environment. Generally, it can adapt to a space height of 8,000 meters, and the space height is about 15,000 meters. RF transmission sparks or discharges will occur to varying degrees, resulting in an increase in the standing wave coefficient and reflection power of the microwave transmission system. , the noise level increases, making the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/06H04B1/10
Inventor 郑淑梅靳含飞孙志刚
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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