Pulse or digital communications – Transceivers – Modems
Reexamination Certificate
2006-07-04
2006-07-04
Chin, Stephen (Department: 2634)
Pulse or digital communications
Transceivers
Modems
C375S295000
Reexamination Certificate
active
07072390
ABSTRACT:
Frequency translation and applications of the same are described herein, including RF modem and wireless local area network (WLAN) applications. In embodiments, the WLAN invention includes an antenna, an LNA/PA module, a receiver, a transmitter, a control signal generator, a demodulation/modulation facilitation module, and a MAC interface. The WLAN receiver includes at least one universal frequency translation module that frequency down-converts a received EM signal. In embodiments, the UFT based receiver is configured in a multi-phase embodiment to reduce or eliminate re-radiation that is caused by DC offset. The WLAN transmitter includes at least one universal frequency translation module that frequency up-converts a baseband signal in preparation for transmission over the wireless LAN. In embodiments, the UFT based transmitter is configured in a differential and multi-phase embodiment to reduce carrier insertion and spectral growth.
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Bultman Michael J.
Cook Robert W.
Looke Richard C.
Moses, Jr. Charley D.
Rawlins Gregory S.
Chin Stephen
Odom Curtis
ParkerVision, Inc.
Sterne Kessler Goldstein & Fox P.L.L.C.
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