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Device operable with an excellent spectrum suppression

  • US 5,260,973 A
  • Filed: 06/28/1991
  • Issued: 11/09/1993
  • Est. Priority Date: 06/28/1990
  • Status: Expired due to Term
First Claim
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1. A device for use in processing a baseband input signal and a carrier signal into an envelope output signal, said device comprising:

  • modulating means for modulating said carrier signal with said baseband input signal to produce an output signal;

    means for generating a burst control signal;

    switching means supplied with said burst control signal for switching said modulating means on and off such that said modulating means produces said output signal when said modulating means is switched on and a non-modulated signal when said modulating means is switched off, wherein said carrier signal and said baseband input signal are modulated only when said modulating means is switched on in response to said switching means;

    waveform generating means responsive to said burst control signal for generating a control signal; and

    amplifying means supplied with said control signal and said output signal for amplifying said output signal to a power range determined by said control signal to generate said envelope output signal.

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