Title: Satellite frequency-reducing device
Application Number: 200520016348 Application Date: 2005.04.18
Publication Number: 000000000 Publication Date:
Approval Pub. Date: 2006.06.28 Granted Pub. Date: 2006.06.28
International Classifi-cation: H03D7/14;H04B7/15
Applicant(s) Name: Qiji Science Technology Co., Ltd. Address:
Inventor(s) Name: Shan Changgeng;Huang Yiqin
Attorney & Agent: huang xiaolin wang zhisen
Abstract:
    A frequency-reducing device includes two low noise amplifiers, a switching circuit, a wave filter, two oscillators, a wave mixing device, an intermediate-frequency amplifier and a control circuit. The low noise amplifier is used for amplifying polarization signal, output of the switching circuit can switch into an input of the switching circuit, the wave filter can allow many signals with particular frequency passing, the wave mixing device is used for mixing output of the wave filter and the first or second oscillatory wave phase, the intermediate-frequency amplifier is used for amplifying output of the wave mixing device, and the control circuit can determinate output of the switching circuit, in addition, it can chooses one output of the oscillator outputs to be input of the wave mixing device.
Time: 18