Low loss wide bandwidth parallel channel acoustic filter

Details Low loss wide bandwidth parallel channel acoustic filter Low loss wide bandwidth parallel channel acoustic filter

1991-12-02

1994-03-22

Lee, Benny

Wave transmission lines and networks

Coupling networks

Electromechanical filter

333195, 310313R, 310313B, 310313D, H03H 964

Patent

active

052968243

ABSTRACT:
An acoustic wave filtering apparatus includes an acoustic wave propagating substrate for supporting propagation of acoustic waves and a plurality of acoustic wave filters for filtering an electrical signal. Each of said plurality further comprises an input for supplying electrical input signals, an input unidirectional acoustic wave transducer for converting electrical signal energy into acoustic energy, an output unidirectional acoustic wave transducer for converting acoustic signals to electrical signals, and an output for combining and delivering electrical output signals to external electrical apparatus.

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Colvin, et al; "Stagger Tuning of SAW Filters for Blood Bandwidth and Good Shape Factor", IEEE Trans Sonic and Ultrasonics; vol. SU29, No. 1; Jan. 1982; pp. 50-52.
An article entitled "Low loss, Highly Stable SAW Devices on Quartz", T. N. Oliver et al., 40th Annual Frequency Control Symposium, pp. 269-274.

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