Resonator ladder type surface acoustic wave filter

Details Resonator ladder type surface acoustic wave filter Resonator ladder type surface acoustic wave filter

1998-04-09

2000-12-26

Lee, Benny

Wave transmission lines and networks

Coupling networks

Electromechanical filter

333195, 333194, 310313B, H03H 964

Patent

active

061666114

ABSTRACT:
A resonator ladder type surface acoustic wave filter, has an input electrical terminal, an output electrical terminal, and a grounding terminal being formed on a piezoelectric substrate, a series arm surface acoustic wave resonator and a parallel arm surface acoustic wave resonator, each constructed from an interdigital transducer for exciting a surface acoustic wave, being formed between said input electrical terminal and said output electrical terminal, and when the center frequency of said resonator ladder type surface acoustic wave filter is denoted by fc, and capacitance determined by the number of electrode finger pairs and electrode finger overlap width in said interdigital transducer of said parallel arm surface acoustic wave resonator is denoted by Cp (fc: center frequency [GHz], Cp: capacitance of the interdigital transducer of the parallel arm surface acoustic wave resonator), capacitance C of multiples of said parallel arm surface acoustic wave resonator, connected to the same node between said input electrical terminal and said output electrical terminal, always satisfies the relation

REFERENCES:
patent: 5471178 (1995-11-01), Hickernell
patent: 5506552 (1996-04-01), Seki et al.
patent: 5543757 (1996-08-01), Kobayashi et al.
patent: 5559481 (1996-09-01), Satoh et al.
patent: 5699027 (1997-12-01), Tsuji et al.
patent: 5719536 (1998-02-01), Matsui et al.

Affiliated with

Also associated with

Rating

Resonator ladder type surface acoustic wave filter does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-999422