Combined keyed AGC and pulse amplitude comparator circuit

Details Combined keyed AGC and pulse amplitude comparator circuit Combined keyed AGC and pulse amplitude comparator circuit

1977-04-19

1978-07-04

Safourek, Benedict V.

325400, H04B 116

Patent

active

040991245

ABSTRACT:
Combined keyed AGC and pulse amplitude comparison circuit for use in pulse pair communications system such as DME wherein AGC keying signal is constituted by the second pulse having a predetermined spacing from a first pulse of a pair and wherein said second pulse also provides a reference against which the amplitude of succeeding pulses is compared. Pulses with amplitudes above said reference level are passed to a decoder for determining pulse spacing. The decoder determines which pulse pairs are properly spaced so that the second pulse of a pair can serve as a keying signal.

REFERENCES:
patent: 3624290 (1971-11-01), Hofmann
patent: 3740471 (1973-06-01), Wilcox
patent: 3979683 (1976-09-01), Ikeda

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