Expander system for pulse signals

Details Expander system for pulse signals Expander system for pulse signals

1988-11-07

1990-01-02

James, Andrew J.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

328133, 328155, 328 55, 328111, 307262, 307518, 375122, H03K 522, H03K 500

Patent

active

048915998

ABSTRACT:
An expander system for pulse signals with enhanced output power level is disclosed. The expander system, which comprises an expander filter and subsequently connected amplifier means, is provided with a supplementary 180 degree phase modulator connected in front of the expander filter. The phase modulator is switched on and off by a control signal delivered from a control stage in such a manner that, during the duration of a pulse signal, the phase modulator produces at least two phase shifts of approximately 180 degrees.

REFERENCES:
patent: 3119964 (1964-01-01), Crafts
patent: 3157725 (1964-11-01), Wayne, Jr.
patent: 3662290 (1972-05-01), Elliott
patent: 3668533 (1972-06-01), Fish et al.
patent: 4037159 (1977-07-01), Martin
patent: 4095196 (1978-06-01), Seidel
patent: 4821293 (1989-04-01), Shimizume et al.
patent: 4829257 (1989-05-01), Cooper

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