Amplitude and delay equalization of surface acoustic wave filter

Details Amplitude and delay equalization of surface acoustic wave filter Amplitude and delay equalization of surface acoustic wave filter

1977-03-21

1978-06-20

Grimm, Siegfried H.

Modulators

Amplitude modulator

Nonlinear device controlled by modulating signal

325136, 325182, 328162, 332 45, 333 28R, 333 29, 333 72, H03C 106, H03C 160

Patent

active

040964540

ABSTRACT:
Amplitude and delay equalization of a surface acoustic wave filter used in the output of the amplitude modulated stage of a TV transmitter is disclosed. The equalization is provided by designing the filter to produce an amplitude ripple maximum or minimum at the visual carrier frequency. The video applied to the amplitude modulator is processed by a transversal equalizer such that the video is preprocessed to have an inverse amplitude and phase ripple with that produced by surface acoustic wave filter.

REFERENCES:
patent: 3315171 (1967-04-01), Becker
patent: 3621221 (1971-11-01), Cann
patent: 3670269 (1972-06-01), Starr et al.
patent: 3737808 (1973-06-01), Srivastava
patent: 3899666 (1975-08-01), Bolger

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