Wave transmission lines and networks – Coupling networks – Electromechanical filter
Patent
1998-04-08
2000-06-27
Pascal, Robert
Wave transmission lines and networks
Coupling networks
Electromechanical filter
333191, 310348, 310366, H03H 954, H03H 960, H03H 905
Patent
active
060811714
ABSTRACT:
There is provided a Multi-pole Bulk Acoustic Wave Resonator-Stacked Crystal Filter (Multi-pole BAWR-SCF) filtering circuit or device. In one embodiment the Multi-pole BAWR-SCF circuit comprises a first pair of ports, a second pair of ports, a first lead that is coupled between a first and a second one of the first pair of ports, and a second lead that is coupled between a first and a second one of the second pair of ports. The Multi-pole BAWR-SCF circuit also comprises at least one BAW resonator that is coupled in series in the first lead, and at least one Stacked Crystal Filter (SCF). The SCF has first and second terminals that are coupled in the first lead, and a third terminal that is coupled in the second lead. The Multi-pole BAWR-SCF circuit further comprises a plurality of impedance inverting elements and at least one inductive element. Each individual one of the impedance inverting elements is coupled across the first and second leads, and the at least one inductive element is coupled in parallel with the at least one BAW resonator. The Multi-pole BAWR-SCF circuit yields improved frequency response characteristics relative to those that are typically yielded by at least some conventional multi-pole filters, and includes a reduced number of passive components relative to the number of such components included in at least some conventional multi-pole filters.
REFERENCES:
patent: 3173100 (1965-03-01), White
patent: 3189851 (1965-06-01), Fowler
patent: 3293557 (1966-12-01), Denton
patent: 3486046 (1969-12-01), Zalar
patent: 3568108 (1971-03-01), Poirier et al.
patent: 3686579 (1972-08-01), Everett
patent: 3696312 (1972-10-01), Kuhn et al.
patent: 3760471 (1973-09-01), Borner
patent: 3764928 (1973-10-01), Gires et al.
patent: 3916490 (1975-11-01), Sheahan et al.
patent: 3924312 (1975-12-01), Coussot et al.
patent: 4019181 (1977-04-01), Olsson et al.
patent: 4166967 (1979-09-01), Benes et al.
patent: 4320365 (1982-03-01), Black et al.
patent: 4365216 (1982-12-01), Minagawa et al.
patent: 4418299 (1983-11-01), Momosaki
patent: 4456850 (1984-06-01), Inoue et al.
patent: 4502932 (1985-03-01), Kline et al.
patent: 4556812 (1985-12-01), Kline et al.
patent: 4562370 (1985-12-01), Von Dach
patent: 4642508 (1987-02-01), Suzuki et al.
patent: 4897618 (1990-01-01), Svetanoff
patent: 5153476 (1992-10-01), Kosinski
patent: 5162691 (1992-11-01), Mariani et al.
patent: 5166646 (1992-11-01), Avanic et al.
patent: 5185589 (1993-02-01), Krishnaswamy et al.
patent: 5233259 (1993-08-01), Krishnaswamy et al.
patent: 5294898 (1994-03-01), Dworsky et al.
patent: 5332943 (1994-07-01), Bhardwaj
patent: 5373268 (1994-12-01), Dworsky et al.
patent: 5382930 (1995-01-01), Stokes et al.
patent: 5422533 (1995-06-01), Kosinski et al.
patent: 5446306 (1995-08-01), Stokes et al.
patent: 5587620 (1996-12-01), Ruby et al.
patent: 5596239 (1997-01-01), Dydyk
patent: 5629906 (1997-05-01), Sudol et al.
patent: 5646583 (1997-07-01), Seabury et al.
patent: 5692279 (1997-12-01), Mang et al.
patent: 5714917 (1998-02-01), Ella
patent: 5872493 (1999-02-01), Ella
patent: 5910756 (1999-06-01), Ella
Piezoelectric Oscillator, Kunio Sasaki, Feb. 2, 1977, Japanese Patent Abstract No. 52-13793, Kaneishisha Kenkyosho K.K.
Piezoelectric Rudder Filter, Toshihiko Kikko, Nov. 12, 1993, Japanese Patent Abstract No. 5-299970 (A), Murata MFG Co Ltd.
"Acoustic Bulk Wave Composite Resonator", K. Larkin, Appl. Phys. Lett., 38(3), Feb. 1, 1981, pp. 125-127.
"Systematic Design of Stacked-Crystal Filters by Microwave Network Methods", A. Ballato, IEEE Trans. Of Microwave Theory and Techniques, vol., MTT-22, No. 1, Jan., 1974, pp. 14-25.
"Multi-Layered Ultrasonic Tranducers Employing Air-Gap Structure", S. Yoshimoto, IEEE Trans. Of Ultrasonic . . . Wol. 42, No. 3, May, 1995, pp. 339-343.
"Development of Miniature Filters for Wireless Applications", K. Lakin et al., IEEE MTT-S Digest, 1995, pp. 883-886.
"Temperature Compensated High Coupling and High . . . Substrates", T. Shiosaki et al., Ultrasonic Symposium, 1984, pp. 405-410.
"An Air-Gap Type Piezoelectric Composite Thin Film Resonator", H. Satoh et al., IEEE 1985, pp. 361-366.
"Coplanar Waveguides and Microwave Inductors on Silicon Substrates", A. Reyes, IEEE, 1995, pp. 2016-2021.
"Ultrasonic in Integrated Electronics", W. Newell, Proceedings of the IEEE vol. 53, Oct. 1965 pp. 1305-1309.
"Recent Advances in Monolithic Film Resonator Technology" M.M. Driscoll, IEEE, 1986, pp. 365-369.
"Thin Film Bulk Acoustic Wave Filters for GPS", K.M. Lakin, IEEE, 1992, pp. 471-476.
"A monolithic piezoelectric amplitude modulator" Bransalov et al., International Journal of Electronics. vol. 47, No. 6, Dec. 1979, pp. 545-553.
"Ultralinear small-angle phase modulator", Symposium on Frequency Control, 1991, pp. 645-648, Forty-Fifth Annual Symposium on Frequency Control, J. Lowe and F.L. Walls.
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