Telecommunications – Receiver or analog modulated signal frequency converter – Signal selection based on frequency
Reexamination Certificate
2008-07-22
2008-07-22
Mis, David (Department: 2817)
Telecommunications
Receiver or analog modulated signal frequency converter
Signal selection based on frequency
C455S077000, C455S191300, C455S338000
Reexamination Certificate
active
07403756
ABSTRACT:
The present invention is directed to a highly-integrated MEMS-based miniaturized transceiver. The transceiver utilizes a low band front-end to direct sample low band signals and a high band front-end to translate high band signals that cannot be directly sampled to low band before low band front-end processing. The low band front-end comprises an array of High-Q MEMS (microelectromechanical systems)-based filters/resonators separated by isolation amplifiers in selectable cascade with narrower bandwidth filters. Dynamic tuning ability is provided through the isolation amplifiers and the sample frequency of the analog-to-digital converter. This architecture is amenable to monolithic fabrication. The input frequency range is scalable with analog-to-digital conversion sampling rate improvements. Re-utilization of filters is spatially efficient and cost effective. Tuning time is limited only by the analog-to-digital conversion and digital signal processing, not synthesizer settling times. This architecture eliminates major sources of traditional intermodulation distortion and reduces complex hardware, increasing reliability.
REFERENCES:
patent: 2007/0207761 (2007-09-01), LaBerge et al.
Jiacinto Joseph F.
Newgard Robert A.
Potter Robert C.
Roy Manas K.
Eppele Kyle
Jensen Nathan O.
Mis David
Rockwell Collins, Inc.
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