Importance

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Abstract

Disclosed, herein, is an Automatic Gain Control (AGC) signal processor and a method for generating an AGC signal in a phase-locked receiver. An incoming signal, exhibiting both coherent and incoherent characteristics, is filtered to obtain the desired bandwidth. The filtered signals are amplified to maintain an amplitude relationship between the coherent and incoherent signals. The incoherent signals are conditioned in the same circuit, but in a different manner, than coherent signals are conditioned. The conditioned signals are utilized to generate an AGC signal such that an AGC signal is generated in a single circuit for both coherent and incoherent signals, although by differing circuit responses, depending upon the conditioning of the incoming signal. The preferred embodiment of the novel AGC processing contemplates a full wave rectifier as its signal conditioner. Another embodiment contemplates negative peak detection as its conditioner. However, in either embodiment, AGC is generated in a single circuit not only for coherent signals but also for incoherent signals, although generated by differing circuit responses.

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First Claim