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Synchronized Non Reciprocal GaAs Oscillator Circuit

IP.com Disclosure Number: IPCOM000095024D
Original Publication Date: 1965-Aug-01
Included in the Prior Art Database: 2005-Mar-06
Document File: 2 page(s) / 25K

Publishing Venue

IBM

Related People

Fleming, PL: AUTHOR

Abstract

The technique controls the frequency and phase of a gallium arsenide (GaAs) oscillator.

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Synchronized Non Reciprocal GaAs Oscillator Circuit

The technique controls the frequency and phase of a gallium arsenide (GaAs) oscillator.

Gallium arsenide oscillator 1 is biased, either by pulsing or by DC, at terminal 3 slightly below the critical threshold required to initiate a shock wave in it. Terminal 3 is effectively isolated by capacitors 5. Oscillator 1 is coupled at terminals 7 to microwave circulator 9. This is connected at terminals 11 to source 13 of CW locking signals 15.

The frequency of locking signals 15 is adjusted near the transit time frequency of oscillator 1. Each locking signal supplied by source 13, when coupled along circulator 9, is of sufficient amplitude to exceed the critical threshold of oscillator 1 and initiate a shock wave in it. When a shock wave is propagated and appears at the output end of oscillator 1, an output indication is provided across terminals 17 of circulator 9.

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