Document Type and Number:
Japanese Patent JPS50156345
Kind Code:
A
Abstract:
An acoustic surface wave signal processor system finds application in acoustic surface wave multiplexer - demultiplexer apparatus and in acoustic surface wave filters affording selectable frequency and selectable band widths. The signal processor employs a plurality of phase controlling, multiple strip conductor, surface wave couplers placed on a piezoelectric substrate for directing the various frequency bands to spaced-apart tracks on the substrate surface. The signals having thus been separated, the function of demultiplexing is performed; multiplexing may be accomplished by directing the signals through a similar surface wave system, but in the opposite sense. Arrangements for the control of amplifiers in the respective separated channels are used to convert the multiplexer - demultiplexer system into a band pass filter having selectable frequency and band width characteristics.
Application Number:
JP5529775A
Publication Date:
December 17, 1975
Filing Date:
May 08, 1975
Export Citation:
International Classes:
H03H9/25; H03F13/00; H03H3/08; H03H9/00; H03H9/02; H03H9/72; H03H9/76; H04B13/00; H04J1/08; (IPC1-7): H03H9/00; H04B13/00