Surface acoustic wave filter with capacitive phase shifter

Details Surface acoustic wave filter with capacitive phase shifter Surface acoustic wave filter with capacitive phase shifter

1988-04-14

1989-04-04

Nussbaum, Marvin L.

Wave transmission lines and networks

Coupling networks

Electromechanical filter

310313D, 333195, H03H 964, H03H 9145

Patent

active

048189618

ABSTRACT:
A group-type unidirectional surface acoustic wave filter composed of sending electrodes, reflecting electrodes and meander electrodes constituted by interdigital electrodes, respectively. As a phase shifter of the filter, a capacitive element is used. The geometrical configuration of the meander electrode is determined in accordance with geometrical phase difference. The filter enjoys low insertion loss with a simplified structure.

REFERENCES:
patent: 3866154 (1975-02-01), Moore
patent: 4689586 (1987-08-01), Yamada et al.
Smith-"Experimental Distinction Between Crossed-Field and In-Line Three-Port Circuit Models for Interdigital Transducers", reprinted from IEEE Trans., MTT-22, 1974; pp. 960-964.
Yamanouchi et al.-"Low Insertion Loss Elastic Surface Wave Filter Using Group-Type Unidirectional Interdigital Transducer", Institute of Electronics and Communication Engineers of Japan (U.S. 75-15), 1975; pp. 25-30.

Affiliated with

Also associated with

Rating

Surface acoustic wave filter with capacitive phase shifter does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Surface acoustic wave filter with capacitive phase shifter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Surface acoustic wave filter with capacitive phase shifter will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-182164