`
`I IIIII IIIIIIII Ill lllll lllll lllll lllll lllll lllll lllll lllll 111111111111111111
`
`US007110444 B 1
`
`(IO) Patent No.: US 7,110,444 Bl
`
`
`c12) United States Patent
`(45)Date of Patent:
`
`Sorrells et al.
`Sep.19,2006
`
`(54)WIRELESS LOCAL AREA NETWORK
`(WLAN) USING UNIVERSAL FREQUENCY
`
`TRANSLATION TECHNOLOGY INCLUDING
`
`
`MULTI-PHASE EMBODIMENTS AND
`CIRCUIT IMPLEMENTATIONS
`
`(56)
`
`
`
`References Cited
`
`U.S. PATENT DOCUMENTS
`
`2,057,613 A 10/1936 Gardner ......................... 250/8
`
`
`
`
`
`
`
`
`
`2,241,078 A 5/1941 Vreeland ..................... 179/15
`
`(Continued)
`
`(75)Inventors: David F. Sorrells, Middleburg, FL
`
`
`
`
`(US); Michael J. Bultman,
`DE
`
`Jacksonville, FL (US); Robert W.
`DE
`
`Cook, Switzerland, FL (US); Richard
`
`
`C.Looke, Jacksonville, FL (US);
`
`
`Charley D. Moses, Jr., Jacksonville,
`
`
`
`FL (US); Gregory S. Rawlins, Lake
`
`
`Mary, FL (US); Michael W. Rawlins,
`
`
`
`Lake Mary, FL (US)
`196 48 915 Al, 10 pp.
`
`FOREIGN PATENT DOCUMENTS
`
`35 41 031 Al
`42 37 692 Cl
`
`5/1986
`3/1994
`
`(Continued)
`
`OTHER PUBLICATIONS
`
`
`
`English Translation of German Patent Publication No. DE
`
`(73) Assignee: ParkerVision, Inc., Jacksonville, FL
`
`
`
`
`
`
`(US)
`
`(Continued)
`
`Primary Examiner----Chieh M. Fan
`
`
`
`
`
`( *) Notice: Subject to any disclaimer, the term ofthis
`
`Assistant Examiner-Kevin Kim
`
`
`
`
`patent is extended or adjusted under 35
`
`
`(74)Attorney, Agent, or Firm-Sterne, Kessler, Goldstein
`U.S.C. 154(b) by 1111 days.
`& Fox P.L.L.C.
`
`
`
`(21) Appl. No.: 09/632,856
`
`(57)
`
`ABSTRACT
`
`Filed: Aug. 4, 2000
`(22)
`
`
`
`
`
`Related U.S. Application Data
`
`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
`(63)
`
`
`
`Continuation-in-part of application No. 09/525,615, filed on
`
`
`demodulation/modulation facilitation module, and a MAC
`
`Mar. 14, 2000, and a continuation-in-part of application No.
`
`
`interface. The WLAN receiver includes at least one univer
`
`
`09/526,041, filed on Mar. 14, 2000.
`
`
`
`sal frequency translation module that frequency down
`(60)
`
`
`
`Provisional application No. 60/147,129, filed on Aug. 4,
`1999.
`
`
`
`the UFT converts a received EM sign al. In embodiments,
`
`
`
`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
`
`(52)U.S. Cl. ........................ 375/222; 375/328; 455/137
`
`
`
`wireless LAN. In embodiments, the UFT based transmitter
`
`
`
`is configured in a differential and multi-phase embodiment
`
`
`(58)Field of Classification Search ................. 375/222,
`
`
`
`
`to reduce carrier insertion and spectral growth.
`
`
`
`375/328, 324, 349; 455/131, 137, 150.1,
`
`
`
`455/189.1, 190.1, 313, 323, 326
`
`
`
`See application file for complete search history.
`
`(51)
`Int. Cl.
`H04L 5/16 (2006.01)
`
`
`
`
`
`32 Claims, 349 Drawing Sheets
`
`
`
`702�
`
`7004
`,----7002 ', 7091
`
`.._ ____ .!_ ______ -, ,--L--,
`I
`I
`I
`
`7072
`
`INTEL 1001
`
`
`
`US 7,110,444 B1
`
`Page 2
`
`
`
`U.S. PATENT DOCUMENTS
`_
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`
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`
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`
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`................... 375/80
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`
`US 7,110,444 Bl
`
`Page 3
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