Modulator with harmonic mixers

Details Modulator with harmonic mixers Modulator with harmonic mixers

1994-05-23

1995-05-16

Mis, David

Modulators

Amplitude modulator

Single or vestigial sideband type

332164, 329354, 329357, 455 21, 455 47, 455109, 455203, 455302, 455325, 327113, H03C 160, H03D 124

Patent

active

054164494

ABSTRACT:
An improved modulator circuit for mixing a modulation signal with a carrier signal includes first and second harmonic mixers which are operative to produce modulated output signals at an output frequency corresponding to both the sum and the difference of the modulation signal frequency and the even harmonic frequencies of the carrier signal frequency. In one configuration employing a 90.degree. hybrid, the output signals of the harmonic mixers are combined to produce a single sideband modulated output signal. A novel harmonic mixer circuit is also provided along with demodulator circuits and methods of modulating and demodulating modulation signals.

REFERENCES:
patent: 3320546 (1967-05-01), Allen et al.
patent: 4099228 (1978-07-01), Cohn
patent: 4817201 (1989-03-01), Bonato
patent: 5020148 (1991-05-01), Bonato
Synergy Microwave Corp. "Standard Parts Catalog", 1992, p. 31.

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