| 摘要 |
A carrier suppressed information signal modulation arrangement employs a plurality of serially coupled carrier suppression modulators. Each of the serially coupled modulators has a carrier input, a modulating signal input and a modulated carrier output. A carrier is applied to the carrier input of the first modulator and the suppressed modulated carrier output of each modulator is coupled to the carrier input of the succeeding modulator. An encoder generates modulating signals to be applied to the modulating signal inputs of the serially coupled modulators in response to the information signal. The modulating signals applied to each of the serially coupled modulators modifies the modulated carrier output received at its carrier input to produce a suppressed modulated carrier at the output of the last of the serially coupled modulators that corresponds to the information signal.
|
