Variable bandwidth pass-band filter

Details Variable bandwidth pass-band filter Variable bandwidth pass-band filter

1977-08-18

1979-04-24

Heyman, John S.

Wave transmission lines and networks

Automatically controlled systems

With control of equalizer and/or delay network

333173, H03H 712

Patent

active

041514742

ABSTRACT:
In a switched multipath filter network, the passband is varied by varying the duty cycle of the switches which commutate the constituent filters. When no filter is operative, the output connection of the filters is interrupted to prevent the unfiltered signal passing through, but the network output is smoothed to provide sample and hold action.

REFERENCES:
patent: 3603898 (1971-09-01), Dawson
patent: 3604947 (1971-09-01), Puthuff
patent: 3740537 (1973-06-01), Giles et al.
patent: 3890577 (1975-06-01), Grundy

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