Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Reexamination Certificate
2005-07-12
2005-07-12
Dougherty, Thomas M. (Department: 2834)
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
C310S309000, C333S133000, C333S197000, C333S198000, C333S186000
Reexamination Certificate
active
06917138
ABSTRACT:
Several MEMS-based methods and architectures which utilize vibrating micromechanical resonators in circuits to implement filtering, mixing, frequency reference and amplifying functions are provided. A method and subsystem are provided for processing RF signals utilizing a plurality of vibrating micromechanical devices typically in the form of an IF mixer-filter and an RF channel selector or an image-reject RF filter. One of the primary benefits of the use of such architectures is a savings in power consumption by trading power for high selectivity (i.e., high Q). Also, such methods and circuits can eliminate the need for a low noise amplifier in a receiver or transceiver subsystem. Consequently, the present invention relies on the use of a large number of micromechanical links in SSI networks to implement signal processing functions with basically zero DC power consumption.
REFERENCES:
patent: 4081769 (1978-03-01), Shreve
patent: 4262269 (1981-04-01), Griffin et al.
patent: 4596969 (1986-06-01), Jachowski
patent: 4660004 (1987-04-01), Jachowski
patent: 4721925 (1988-01-01), Farace et al.
patent: 4724351 (1988-02-01), EerNisse et al.
patent: 4862122 (1989-08-01), Blair, Jr. et al.
patent: 5025346 (1991-06-01), Tang et al.
patent: 5065119 (1991-11-01), Jachowski
patent: 5090254 (1992-02-01), Guckel et al.
patent: 5191304 (1993-03-01), Jachowski
patent: 5399232 (1995-03-01), Albrecht et al.
patent: 5428325 (1995-06-01), Jachowski et al.
patent: 5446729 (1995-08-01), Jachowski
patent: 5455547 (1995-10-01), Lin et al.
patent: 5491604 (1996-02-01), Nguyen et al.
patent: 5537083 (1996-07-01), Lin et al.
patent: 5550516 (1996-08-01), Burns et al.
patent: 5578976 (1996-11-01), Yao
patent: 5589082 (1996-12-01), Lin et al.
patent: 5619061 (1997-04-01), Goldsmith et al.
patent: 5640133 (1997-06-01), MacDonald et al.
patent: 5783973 (1998-07-01), Weinberg et al.
patent: 5839062 (1998-11-01), Nguyen et al.
patent: 5872489 (1999-02-01), Chang et al.
patent: 5914553 (1999-06-01), Adams et al.
patent: 5955932 (1999-09-01), Nguyen et al.
patent: 5963857 (1999-10-01), Greywall
patent: 5976994 (1999-11-01), Nguyen et al.
patent: 6016092 (2000-01-01), Qiu et al.
patent: 6049702 (2000-04-01), Tham et al.
patent: 6121552 (2000-09-01), Brosnihan et al.
patent: 6169321 (2001-01-01), Nguyen et al.
patent: 6600252 (2003-07-01), Nguyen
patent: 6624726 (2003-09-01), Niu et al.
patent: 6680660 (2004-01-01), Nguyen
patent: 2001/0022546 (2001-09-01), Frey et al.
patent: 0 962 999 (1999-12-01), None
Wong, Ark-Chew et al., Micromechanical Mixer+Filters, Technical Digest, IEEE International Electron Devices Meeting, San Francisco, California, Dec. 6-9, 1998, pp. 471-474.
Nguyen, Clark T.-C., et al., Design and Performance of CMOS Micromechanical Resonator Oscillators, IEEE International Frequency Control Symposium, 1994. pp. 127-134.
Wang, Kun, et al., Q-Enhancement of Microelectromechanical Filters Via Low-Velocity Spring Coupling, IEEE Ultrasonics Symposium, 1997, pp. 323-327.
Bannon, III, Frank D., et al., High Frequency Microelectromechanical IF Filters, IEEE Electron Devices Meeting, 1996, pp. 30.4.1-30.4.4.
Clark, John R., et al., Parallel-Resonator HF Micromechanical Bandpass Filters, IEEE International Conference on Solid-State Sensors and Actuators, 1997, pp. 1161-1164.
Brooks & Kushman P.C.
Dougherty Thomas M.
The Regents of the University of Michigan
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