Filter device utilizing stacked resonators and acoustic...

Details Filter device utilizing stacked resonators and acoustic... Filter device utilizing stacked resonators and acoustic...

2007-05-01

2007-05-01

Summons, Barbara (Department: 2817)

Wave transmission lines and networks

Coupling networks

Electromechanical filter

C333S133000

Reexamination Certificate

active

10902525

ABSTRACT:
A filter device is provided which is low in power loss, small in size and operates in wide bands. The filter device includes a first signal-side resonator having an input signal electrode, an output signal electrode, a first piezoelectric film, an input electrode film, and a common electrode film being commonly used by a second signal-side resonator and sandwiching the first piezoelectric film using the input electrode film, a second signal-side resonator having a second piezoelectric film formed in layers on the first piezoelectric film, an output electrode film, a common electrode film sandwiching the second piezoelectric film using the output electrode film and being acoustically coupled to the first signal resonator, and a ground-side resonator connected between the common electrode film and a ground electrode and operating in a specified resonant frequency and in an anti-resonant frequency almost conforming to resonant frequencies in which the first and second signal-side resonators operate.

REFERENCES:
patent: 1959429 (1934-05-01), Hovgaard
patent: 3568108 (1971-03-01), Poirier et al.
patent: 5486800 (1996-01-01), Davenport
patent: 5682126 (1997-10-01), Plesski et al.
patent: 5910756 (1999-06-01), Ella
patent: 6448695 (2002-09-01), Milsom
patent: 2005/0012570 (2005-01-01), Korden et al.
patent: 10-93375 (1998-04-01), None
patent: 2002-217676 (2002-08-01), None

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