Accession Number : AD0779667

Title :   Coherent Frequency Synthesizer Techniques Study.

Descriptive Note : Final rept. May 71-Sep 73,

Corporate Author : MAGNAVOX CO FORT WAYNE IND FORT WAYNE DIV

Personal Author(s) : Burke,A. G. , III ; Hunsinger,B. J.

Report Date : MAR 1974

Pagination or Media Count : 132

Abstract : The report describes the design and operating characteristics of a coherent frequency hopped/pseudonoise modem breadboard that employs a coherent 100-MHz bandwidth pseudonoise waveform structure and which is capable of operating with either 2249 bps or 10 Mbps digital data. The modem makes extensive use of acoustic surface wave tapped delay line technology for both the generation and subsequent processing of the 100-MHz bandwidth form. The report primarily deals with the surface wave techniques used to implement the modem and includes the results of breadboard system testing that revealed a primary operating mode system processing gain within 3 dB of theoretical predictions. (Author)

Descriptors :   *Frequency synthesizers, Acoustic equipment, Surface waves, Signal processing, Modems, Spread spectrum, Coherence, Signals, Pseudo noise systems, Oscillators, Matched filters, Digital systems, Rates, Integrators

Subject Categories : Line, Surface and Bulk Acoustic Wave Devices

Distribution Statement : APPROVED FOR PUBLIC RELEASE