Electricity: electrical systems and devices – Electrostatic capacitors – Variable
Reexamination Certificate
2005-12-27
2005-12-27
Pham, Hoai (Department: 2891)
Electricity: electrical systems and devices
Electrostatic capacitors
Variable
C257S602000
Reexamination Certificate
active
06980412
ABSTRACT:
The invention relates to a variable capacitor and method of making it. The variable capacitor comprises a fixed charge plate disposed in a substrate, a movable charge plate disposed above the fixed charge plate, and a stiffener affixed to the movable charge plate. The movable charge plate may be patterned to form a movable actuator plate where the fixed charge plate is elevated above a fixed actuator plate.
REFERENCES:
patent: 3341794 (1967-09-01), Stedman
patent: 3648340 (1972-03-01), MacIver
patent: 3917964 (1975-11-01), Carlson
patent: 3993939 (1976-11-01), Slavin et al.
patent: 4095263 (1978-06-01), Johanson
patent: 4198670 (1980-04-01), Mann
patent: 4236137 (1980-11-01), Kurtz et al.
patent: 4674319 (1987-06-01), Muller et al.
patent: 4697159 (1987-09-01), Sechi et al.
patent: 5185690 (1993-02-01), Miller
patent: 5526172 (1996-06-01), Kanack
patent: 5619061 (1997-04-01), Goldsmith
patent: 5963788 (1999-10-01), Barron et al.
patent: 5973343 (1999-10-01), Takaishi
patent: 6022225 (2000-02-01), Chapin et al.
patent: 6215644 (2001-04-01), Dhuler
patent: 0637042 (1994-07-01), None
patent: 03083314 (1991-04-01), None
Kevin F. Harsh et al, “Flip-Chip Assembly for Si-Based RF MEMS”, IEEE, MEMS '99 Conference, 12thIntl. Conference, pp 273-278, Dec. 1999.
L. Fan et al., Universal MEMS Platforms for Passive RF Components: Suspended Inductors and Variable Capacitors, IEEE, Micro Electro Mechanical System, pp. 29-33, Dec. 1998.
J. Chiao et al., “MEMS Millimeterwave Components”, IEEE MTT-S Digest, pp 463-466, May 1999.
H. Wu et al., “MEMS Designed for Tunable Capacitors”, IEEE MTT-S Digest, pp 127-129, May 1998.
Y.B. Gianchandani et al. “A MEMS-First Fabrication Process for Integrating CMOS Circuits with Polysilicon Microstructures”, IEEE, Micro Electro Mechanical Systems, pp 257-262, Dec. 1998.
Z. Lisa Zhang et al. “Submicron, Movable Gallium Arsenide Mechanical Sturctures and Actuators” IEEE Micro Electro Mechanical Systems, pp 72-77, Feb. 1992.
Kevin F. Harsh et al. “The Realization and Design Considerations of a Flip-Chip Integrated MEMS Tunable Capacitor” Proceedings of 12thInt'l Workshop on Micro Electro Mechanical Systems, MEMS, pp 108-118, Orlando, FL, vol. A80, No. 2, Jan. 1999, XP004192096, Sensors and Actuators A (Physical) Mar. 2000, Elsevier, Switzerland.
International Search Report, PCT/US 01/02202, Jan. 22, 2001.
Cheng Peng
Ma Qing
Farahani Dana
Ortiz Kathy J.
Pham Hoai
LandOfFree
Variable tunable range MEMS capacitor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Variable tunable range MEMS capacitor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Variable tunable range MEMS capacitor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3477736