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Temperature-compensated gain-controlled amplifier having a wide linear dynamic range

  • US 5,408,697 A
  • Filed: 06/14/1993
  • Issued: 04/18/1995
  • Est. Priority Date: 06/14/1993
  • Status: Expired due to Fees
First Claim
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1. A method for amplifying an input signal having a large dynamic range in an amplification device such that the signal gain in decibels is a linear function of a power control signal, said method comprising the steps of:

  • (a) generating a first device compensation signal as said power control signal according to a first predetermined device characteristic;

    (b) generating a second device compensation signal independent of gain generating components for said amplification device, having a value that varies in response to changes in temperature according to a second predetermined device characteristic;

    (c) applying said first and second device compensation signals as distinct control inputs to said amplification device; and

    (d) amplifying said input signal by a signal gain factor determined by a combination of said first and second compensation signals, with said signal gain factor in decibels being a linear function of said power control signal independent of temperature over a predetermined range.

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