Digital communications receiver

Pulse or digital communications – Repeaters – Testing

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455161, H04B 116

Patent

active

043074650

ABSTRACT:
Receiving apparatus for receiving and detecting binary encoded continuous wave RF signals. The binary signal is detected by a superregenerative detector. The detected signal and a DC reference voltage are applied to an amplifier which produces a signal corresponding to the detected signal but shifted to vary in amplitude about an axis at the DC reference voltage. The shifted signal and the DC reference voltage are applied to a comparator which produces an output signal at a predetermined voltage level when the shifted signal is greater than the DC reference voltage and at 0 volts when the shifted signal is less than the DC reference voltage. Thus a noise-free binary signal having sharply defined voltage transitions is obtained.

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