Apparatus and method for converting a frequency division...

Details Apparatus and method for converting a frequency division... Apparatus and method for converting a frequency division...

H - Electricity

04

J

363/1.5

H04J 99/00 (2009.01) H04J 14/02 (2006.01) H04J 14/08 (2006.01)

Patent

CA 1334114

Apparatus for converting a frequency division multiplex (fdm) signal to a time domain multiplex (tdm) signal in which a voltage controlled oscillator (21) whose output is a staircase of reference frequencies mixed by a mixer (20) with a received fdm signal. Each received frequency is output in turn at a common intermediate frequency from a bandpass filter 22 thereby forming a fdm signal after passing through a demodulator (23) and low pass filter (24). 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.

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