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Power amplifying apparatus for wireless transmitter

  • US 5,126,688 A
  • Filed: 03/20/1991
  • Issued: 06/30/1992
  • Est. Priority Date: 03/30/1990
  • Status: Expired due to Term
First Claim
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1. A power amplifying apparatus having power amplifying means composed of a plurality of power amplifiers, for controlling the electric power outputted from said power amplifying means to a predetermined electric power level by using a feedback control, comprising:

  • power controlling means for outputting a control signal so as to obtain a desired output of the electric power from said power amplifying means,first controlling means for fetching a monitor voltage from said power amplifying means, converting said monitor voltage into a predetermined level on the basis of said control signal from said power controlling means, and controlling the converted monitor voltage in a feedback control to feedback said converted monitor voltage into a predetermined power amplifier of said power amplifying means, anda second controlling means for receiving said control signal from said power controlling means and for controlling a predetermined power amplifier of said power amplifying means according to the received control signal.

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