Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1991-11-01
1993-08-24
Ng, Jin F.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307529, H03B 1900
Patent
active
052392716
ABSTRACT:
A millimeter wave synthesizer is described which comprises a Gunn oscillator mechanically tuned so that its bandwidth includes the selected harmonic of the output of an L-band synthesizer. The output of the synthesizer and the Gunn oscillator are applied to a sampling phase detector. If the frequency of the output of the oscillator is exactly the same as the harmonic selected, the detector will provide a DC signal. If the frequency of the oscillator output is different from that of the selected harmonic, the detector will provide a AC signal. A loop filter and search circuit respond to this AC signal to provide a sawtooth signal fed to the oscillator in an automatic search process causing the frequency of the oscillator output to be adjusted until it is locked to the selected harmonic of the synthesizer. The output of the synthesizer can be tuned remotely to compensate for temperature and aging effects.
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"50-GHz Sampler Hybrid," by Whiteley et al., IEEE MIT-S Digest, pp. 895-898, 1991.
Product brochure entitled "Sampling Phase Detector," by Metelics Corporation.
Ng Jin F.
Tran Sinh
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