作者: Eugene M. Petilli , Brian Jadus , Clyde Washburn , John M. Alvermann
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摘要: Disclosed are hybrid heterodyne transmitters and receivers for use in communications systems, or other the corresponding methods transmitting receiving. A receiver converting a continuous time modulated signal to discrete digital baseband includes sigma-delta modulator. The modulator is analog-to-digital converter constructed arranged receive at an RF carrier frequency provide quantized output first intermediate frequency. may also include mixer data stream by second mixing then provides signals representative of suitable processing.