Wave transmission lines and networks – Coupling networks – Electromechanical filter
Patent
1995-01-06
1997-05-20
Lee, Benny
Wave transmission lines and networks
Coupling networks
Electromechanical filter
333133, 310313R, H03H 900
Patent
active
056316127
ABSTRACT:
A SAW filter includes a first SAW resonator having a pair of terminals and a predetermined resonance frequency (f.sub.rp), the first SAW resonator being provided in a parallel arm of the SAW filter. A second SAW resonator has a pair of terminals and a predetermined resonance frequency (f.sub.rs) approximately equal to a predetermined antiresonance frequency of the first SAW resonator (f.sub.ap). The second SAW resonator is provided in a series arm of the SAW filter. An inductance element is connected in series to the first SAW resonator.
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Ikata Osamu
Matsuda Takashi
Miyashita Tsutomu
Satoh Yoshio
Takamatsu Mitsuo
Fujitsu Limited
Gambino Darius
Lee Benny
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