公开(公告)号：US4680749A

公开(公告)日：1987-07-14

申请号：US734369

申请日：1985-05-15

申请人： Arvid E. Englund ,  Stephen R. Wynn ,  Rodney A. Dolman ,  Frederick J. Highton ,  Rickey D. Harris

发明人： Arvid E. Englund ,  Stephen R. Wynn ,  Rodney A. Dolman ,  Frederick J. Highton ,  Rickey D. Harris

IPC分类号： H04B7/26 ,  H04B1/40 ,  H04B1/50 ,  H04B14/00 ,  H04L27/18 ,  H04J9/00

CPC分类号： H04B14/006 ,  H04B1/406

摘要： A novel circuit architecture is disclosed for achieving audio, tone, and digital data signal modulation in a full duplex radio transceiver. A single signal source is utilized to generate both transmitted carrier and receiver local oscillator injection signals. Yet the architecture is such that the transmitted data does not appear at the receiver's discriminator output--while a "side tone" of transmitted audio does so appear. The audio to be transmitted is used to frequency modulate a VCO and provide the receiver first mixer injection signal as well as a "carrier" input to a phase modulator. The data/tone signals are on the other hand, combined and integrated in a complex waveform and input to control the phase modulator. The resulting FM (data/tone and voice) output from the phase modulator is then input to a conventional duplexed r.f. transmitter.

摘要翻译： 公开了一种用于在全双工无线电收发器中实现音频，音调和数字数据信号调制的新型电路架构。 利用单个信号源来产生传输的载波和接收机本地振荡器注入信号。 然而，架构使得所发送的数据不出现在接收机的鉴别器输出端，而传输的音频的“侧音”出现。 要传输的音频用于对VCO进行频率调制，并提供接收机第一混频器注入信号以及向相位调制器输入“载波”。 另一方面，数据/音调信号被组合并集成在复杂波形和输入中以控制相位调制器。 然后将从相位调制器输出的所得FM（数据/音调和语音）输入到常规的双工r.f. 发射机。