Ultra-Broadband Constant Temperature Downconverter

A frequency converter and ultra-wideband technology, applied in the field of high-performance ultra-wideband constant temperature converters, can solve problems such as difficulty in guaranteeing, and achieve the effects of reducing output spurious, reducing combined frequency interference, and achieving high performance.

Active Publication Date: 2022-07-29
10TH RES INST OF CETC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] When down-converting the input RF signal from 200MHz to 12GHz to an intermediate frequency of 1.2GHz, since the receiving frequency band of the inverter spans multiple octaves, the spurious interference of the signal will be very serious; at the same time, when the input signal has a wide bandwidth, The signal flatness index after the broadband frequency converter is also a technical difficulty that is difficult to guarantee

Method used

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  • Ultra-Broadband Constant Temperature Downconverter
  • Ultra-Broadband Constant Temperature Downconverter
  • Ultra-Broadband Constant Temperature Downconverter

Examples

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Embodiment Construction

[0019] see figure 1 . In the preferred embodiment described below, an ultra-wideband self-cooling downconverter includes: a receiving channel unit, a frequency synthesis unit, an AC / DC power supply unit, a heat dissipation unit, and a control unit connected, characterized in that: AC / DC The power supply unit converts the external 220V AC into +12V DC, which supplies power to the control unit, frequency synthesis unit and cooling unit in the equipment; the control unit collects the status of each functional unit, and controls the local control, operating frequency, attenuation value, intermediate frequency bandwidth, etc. The parameters are configured and sent to each functional unit; the frequency synthesis unit generates the local oscillator signal LO required by the device according to the frequency sent by the control unit and the reference signal input from the internal reference clock or external reference clock; The frequency information sent by the control unit, the lo...

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Abstract

The invention discloses an ultra-wideband constant temperature down-converter, which can down-convert a 200MHz-12GHz radio frequency signal to an intermediate frequency signal of 1.2GHz±250MHz. The present invention is realized by the following technical solutions: the control unit collects the status of each functional unit and issues it to each functional unit; the frequency synthesis unit generates the local oscillator signal LO required by the device according to the frequency issued by the control unit; the receiving channel unit The local oscillator signal LO generated by the frequency converter local oscillator source of the frequency synthesis unit and the external high and low frequency band radio frequency signal RF are subjected to spectrum mixing, preselector group filtering and amplification processing. IF signal, the cooling unit performs heat dissipation and cooling treatment on the equipment according to the control command issued by the control unit, so that the inverter can work within a constant temperature range.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a high-performance (receiving frequency bandwidth, power tolerance, high amplitude-frequency characteristic) ultra-wideband constant temperature downconverter that can be applied to an ultra-wideband system. Background technique [0002] With the rapid development of electronic technology, the frequency band of the signal that needs to be detected is wider and wider. In traditional wideband RF applications such as radars, scanning receivers, etc., a single receiver chain is often not wide enough to cover the entire useful bandwidth, and multiple parallel signal chains are often used to simulate a single wideband receiver chain, resulting in cost and Higher complexity and longer design time. As the front end of the equipment for acquiring information, the broadband receiving system not only has the characteristics of wide instantaneous bandwidth, high sensitivity and large ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03D7/16
CPCH03D7/165
Inventor 张仕超史本忠刘田席文君杨俊武付树洪
Owner 10TH RES INST OF CETC
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