公开(公告)号：US5406553A

公开(公告)日：1995-04-11

申请号：US799891

申请日：1991-12-02

申请人： David W. Smith ,  Godfrey R. Hill ,  Roy A. Lobbett

发明人： David W. Smith ,  Godfrey R. Hill ,  Roy A. Lobbett

IPC分类号： H04J14/02 ,  H04J14/08 ,  H04J4/00 ,  H04J14/00

CPC分类号： H04J14/02 ,  H04J14/08

摘要： Apparatus for converting a frequency division multiplex (fdm) signal to a time domain multiplex (tdm) signal in which a voltage control oscillator whose output is a staircase of reference frequencies is mixed by a mixer with a received fdm signal. Each received frequency is output in turn at a common intermediate frequency from a bandpass filter thereby forming a tdm signal after passing through a demodulator and low pass filter. The conversion may take place in the optical domain by mixing optical reference frequencies with an optical fdm signal in, for example, a coherent heterodyne optical receiver.

摘要翻译： 用于将频分复用（fdm）信号转换为时域多路复用（tdm）信号的装置，其中输出为参考频率的阶梯的压控振荡器通过具有接收的fdm信号的混频器混合。 每个接收频率依次以带通滤波器的公共中频输出，从而在通过解调器和低通滤波器之后形成tdm信号。 通过将光学参考频率与例如相干外差光接收机中的光学fdm信号混合，可以在光学域中进行转换。