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Power sensing apparatus for power amplifiers

  • US 6,198,351 B1
  • Filed: 05/10/1999
  • Issued: 03/06/2001
  • Est. Priority Date: 05/10/1999
  • Status: Expired due to Term
First Claim
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1. A power sensing circuit for sensing the output power of a power amplifier comprising:

  • a FET device operative in a first linear mode and second saturated mode of operation, said FET having source, gate and drain electrodes; and

    resistive means connected between said source electrode and a reference potential for generating a voltage drop between said source and said reference potential such that when said FET operates in said saturation mode, said voltage drop is indicative of the output power of said power amplifier.

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