Frequency stabilized single oscillator transceiver

专利名称：Frequency stabilized single oscillator

transceivers

发明人：AMOROSO, JR.; SALVATORE申请号：US50172774申请日：19740829公开号：US3916412A公开日：19751028

摘要：A transceiver, adapted for use as either a master or a slave in a duplex pair, hasa single, voltage-tunable, solid state oscillator to provide the carrier frequency wave, asmall portion of which is mixed with the received wave and applied therewith to a singleended mixer; an AGC-controlled loop cancels transmitter input modulation from thereceiver output. The oscillator of the master transceiver is locked to a desired carrierfrequency by a feedback loop including a tuning cavity adjusted to a frequency differentfrom that of the slave transceiver by the common IF frequency; the slave transceiver isfirst locked to the frequency of its tuning cavity and thereafter, upon sensing outputfrom its IF amplifier (from the master), is switched to operate in response to AFCcontrolled by the received signal, such that the master and slave transceivers are lockedtogether at frequencies differing by their common IF frequency. A single integratingamplifier provides demodulator and AFC filtering and, together with a bistable device,initial sweeping of the oscillator control voltage.

申请人：UNITED TECHNOLOGIES CORPORATION

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