Oscillators – Automatic frequency stabilization using a phase or frequency... – Plural oscillators controlled
Patent
1992-02-25
1992-11-24
Pascal, Robert J.
Oscillators
Automatic frequency stabilization using a phase or frequency...
Plural oscillators controlled
331 25, 342165, H03L 700
Patent
active
051666430
ABSTRACT:
A highly accurate remotely controlled C band signal generator which provi a microwave signal to a boresight tower for the purpose of calibrating a radar system. The C band signal generator comprises a data receiver circuit for receiving a serial digital data frame having a plurality of eight bit digital data words and for converting the words from serial to parallel. A pulse repetition generator circuit responsive to one of the eight bit digital data words provides a modulating signal having a first or second pulse repetition frequency. The modulating signal when supplied to a pin diode modulator amplitude modulates the microwave signal which is provided by a voltage tunable oscillator. An attenuation driver circuit responsive to a second of the eight bit words provides an analog signal to a first attenuator which attenuates the microwave signal by one decibel steps and also provides a digital signal to a second attenuator which attenuates the microwave signal by ten decibel steps thus providing for attenuation of the microwave signal within a range of zero to eighty-one decibels. In response to three of the eight bit words a pair of phase lock loop circuits provide a stable voltage control signal to the voltage control oscillator thus assuring frequency stability of the microwave signal provided by the C band signal generator.
REFERENCES:
patent: 4238796 (1980-12-01), Mawhinney
patent: 4969819 (1990-11-01), James
patent: 5053722 (1991-10-01), Kuo et al.
Knox Sid G.
Ortiz-Gonzalez Linda
Wilson Gordon K.
Kalmbaugh David S.
Pascal Robert J.
Sliwka Melvin J.
The United States of America as represented by the Secretary of
LandOfFree
Remotely controlled C band signal generator does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Remotely controlled C band signal generator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Remotely controlled C band signal generator will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-924766