Arrangement for matching and tuning a surface acoustic wave filt

Details Arrangement for matching and tuning a surface acoustic wave filt Arrangement for matching and tuning a surface acoustic wave filt

1996-06-24

1998-05-26

Pascal, Robert

Wave transmission lines and networks

Coupling networks

With impedance matching

333 26, 333193, 333263, H03H 738, H03H 948

Patent

active

057572488

ABSTRACT:
A matching arrangement matches and turns the impedance of a high frequency surface acoustic wave (SAW) filter (3) to the characteristic impedance of an external system. The arrangement includes a power divider/combiner (9,10) with 180 degrees phase difference between the two output ports of the divider--or input ports of the combiner--and an adjustable capacitor (15, 24) installed between the power divider/combiner (9,10) and the SAW-filter (3). The arrangement may be a microstrip network where the power divider/combiner includes a Wilkinson-divider (9,10) in combination with a 180 degrees phase-shift (11,12) between the output arms (13, 14; 20, 21) of the divider (9,10).

REFERENCES:
patent: 3965445 (1976-06-01), Ou
patent: 4460877 (1984-07-01), Sterns
patent: 4625184 (1986-11-01), Niitsuma et al.
patent: 4686492 (1987-08-01), Grellman et al.
patent: 4725792 (1988-02-01), Lampe, Jr.
patent: 4870376 (1989-09-01), Wagers
patent: 5045743 (1991-09-01), Furukawa
patent: 5148130 (1992-09-01), Dietrich
patent: 5384558 (1995-01-01), Maruhashi

Affiliated with

Also associated with

Rating

Arrangement for matching and tuning a surface acoustic wave filt does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Arrangement for matching and tuning a surface acoustic wave filt, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Arrangement for matching and tuning a surface acoustic wave filt will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1966396