Attenuator

Details Attenuator Attenuator

1978-06-30

1979-04-10

Heyman, John S.

Wave transmission lines and networks

Automatically controlled systems

With control of equalizer and/or delay network

333 81R, 332 31R, 328 55, 328158, 307240, 307232, H03K 902, H03K 508

Patent

active

041491238

ABSTRACT:
Attenuation of a signal is achieved by biphase modulating the signal with an asymmetrical duty factor rectangular wave. In one embodiment of the invention an input signal is applied to a phase reversal switch having as its second input thereto an asymmetrical duty factor rectangular wave.

REFERENCES:
patent: 3181074 (1965-04-01), Cotterill
patent: 3201700 (1965-08-01), Pasquier et al.
patent: 3260966 (1966-07-01), Murray
patent: 3348145 (1967-10-01), Erath
patent: 3351863 (1967-11-01), Riemens
patent: 3363188 (1968-01-01), Gardere
patent: 3624560 (1971-11-01), Milton
patent: 3662290 (1972-05-01), Elliott
patent: 3898593 (1975-08-01), Qureshi
patent: 3973223 (1976-08-01), Uchiyama

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