Programmable if bandwidth using fixed bandwidth filters
作者： Scott T. Swazey
DOI:
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摘要: A programmable IF bandwidth is achieved in either a transmitter or receiver using fixed filters. minimum of two frequencies are used. filter that equal to greater than the desired used at each IF. The Local Oscillators (LO's) tuned frequency convert signal offset towards one bandedge first mixer and LO relocates end filter. second filtered opposite obtained as sum from nearest
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