Amplitude insensitive delay lines in a frequency modulated signa

Details Amplitude insensitive delay lines in a frequency modulated signa Amplitude insensitive delay lines in a frequency modulated signa

1984-07-05

1986-07-29

LaRoche, Eugene R.

Demodulators

Amplitude modulation demodulator

Having specific distortion, noise or other interference...

329131, 329145, 333139, 333165, H03D 100

Patent

active

046033017

ABSTRACT:
A circuit for detecting a Frequency Modulated (FM) signal is provided. An amplitude limited FM signal is propated through a delay circuit comprising a plurality of cascaded saturating inverters. A Boolean logic "Exclusive Or" (XOR) operation is performed between the FM signal before entering the delay circuit and after exiting the delay circuit.

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Travis, Data Converters, EDN, Jun. 14, 1984, pp. 119-124.
Phillip K. Hardage and Stephen W. Peurifoy, "Method and Apparatus for Delaying a Pulse", Ser. No. 352,671, filed 2/26/82.
Jonathan Taft, "A Digital Delay Line, Implemented in VLSI", Abstract of talk given at MIT in Mar./Apr., 1983.
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Joseph F. Lutz, Synchronous Relay-Line Detector Provides Wideband Performance, Microwaves & RF, Nov. 1982, 71, 74, 75, 79.
H. Edward Karrer & Arthur M. Dickey, "Ultrasound Imaging: an Overview", Hewlett-Packard Journal, Oct. 1983, pp. 3-6.

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