Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1980-06-23
1982-07-06
Heyman, John S.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307320, 328 55, 333139, 343 18E, G01S 738, H03L 704
Patent
active
043385281
ABSTRACT:
A serrodyne includes a phase shifting circuit adapted to receive a sawtooth modulating signal for providing frequency translation of a radio frequency signal which can be at any of a range of input frequencies. The serrodyne also includes a discriminator which produces in response to the input RF signal a voltage of amplitude proportional thereto. The serrodyne further includes a circuit producing a sawtooth voltage waveform of period 1.div.m, where m is the amount of frequency shift desired in the serrodyne. The sawtooth waveform is applied to the phase shifting circuit. The sawtooth waveform is amplified by an amplifier to which is applied the sawtooth voltage waveform and the signal from the frequency discriminator. The amplification is such that the peak-to-peak magnitude of the amplified waveform is dependent on the amplitude value of the voltage from the frequency discriminator and causes the serrodyne frequency to be shifted by 360.degree. at any of the range of input frequencies.
REFERENCES:
patent: 3110004 (1963-11-01), Pope
patent: 3748499 (1973-07-01), Schaffner
patent: 3851256 (1974-11-01), Levasseur et al.
patent: 3882431 (1975-05-01), Hopwood et al.
patent: 3982214 (1976-09-01), Burns
patent: 4297641 (1981-10-01), Sterzer
Cohen Samuel
Heyman John S.
RCA Corporation
Smiley Raymond E.
Troike Robert L.
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