Source: http://www.google.com/patents/US7783251?ie=ISO-8859-1
Timestamp: 2015-09-03 13:11:08
Document Index: 163967493

Matched Legal Cases: ['Application No. 60', 'Application No. 60', 'Application No. 60', 'Application No. 60', 'Application No. 60', 'Application No. 60', 'Application No. 60', 'Application No. 60', 'Application No. 60', 'Application No. 60', 'Application No. 60', 'Application No. 60', 'Application No. 60', 'Application No. 60']

Patent US7783251 - Adaptive radio transceiver - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsAn exemplary embodiment of the present invention described and shown in the specification and drawings is a transceiver with a receiver, a transmitter, a local oscillator (LO) generator, a controller, and a self-testing unit. All of these components can be packaged for integration into a single IC including...http://www.google.com/patents/US7783251?utm_source=gb-gplus-sharePatent US7783251 - Adaptive radio transceiverAdvanced Patent SearchPublication numberUS7783251 B2Publication typeGrantApplication numberUS 12/183,212Publication dateAug 24, 2010Filing dateJul 31, 2008Priority dateOct 21, 1999Fee statusPaidAlso published asUS7299006, US7512378, US8116677, US20080045162, US20090010310, US20110053522Publication number12183212, 183212, US 7783251 B2, US 7783251B2, US-B2-7783251, US7783251 B2, US7783251B2InventorsAhmadreza Rofougaran, Maryam Rofougaran, Meng-An Pan, Hung-Ming Chien, Shahla Khorram, William T. Colleran, Jacob Rael, Masood Syed, Brima Ibrahim, Stephen Wu, Shervin MoloudiOriginal AssigneeBroadcom CorporationExport CitationBiBTeX, EndNote, RefManPatent Citations (90), Non-Patent Citations (3), Referenced by (7), Classifications (33), Legal Events (1) External Links: USPTO, USPTO Assignment, EspacenetAdaptive radio transceiver
US 7783251 B2Abstract
1. In a wireless communications device, a wireless communications transceiver, comprising:
a mixer that comprises a first input, a second input and an output, the first input of the mixer being operatively coupled to the tunable oscillator, the second input of the mixer being operatively coupled to the local oscillator; and
a phase detector that comprises a first input, a second input and an output, the first input of the phase detector being operatively coupled to the output of the mixer, the output of the phase detector being operatively coupled to the tuning input,
wherein the wireless communications device supports spread spectrum modulation and supports radio frequency (RF) wireless communications, and
wherein at least the receiver, the mixer and the phase detector are integrated on an integrated circuit chip.
2. The wireless communications transceiver according to claim 1, wherein the integrated circuit chip employs complementary metal oxide semiconductor (CMOS) technology.
3. The wireless communications transceiver according to claim 2, wherein the wireless communications device supports communications over a wireless local area network.
4. The wireless communications transceiver according to claim 2, wherein the wireless communications device supports orthogonal frequency division modulation.
5. The wireless communications transceiver according to claim 2, wherein the wireless communications device supports frequency hopping.
6. The wireless communications transceiver according to claim 2, wherein the wireless communications device supports communications over a personal area network.
7. The wireless communications transceiver according to claim 2, wherein the wireless communications device supports phase shift keying.
8. The wireless communications transceiver according to claim 7, wherein the phase shift keying comprises quadrature phase shift keying.
9. The wireless communications transceiver according to claim 7, wherein the phase shift keying comprises offset quadrature phase shift keying.
10. The wireless communications transceiver according to claim 7, wherein the tunable oscillator comprises a voltage controlled oscillator.
11. The wireless communications transceiver according to claim 7, comprising:
12. The wireless communications transceiver according to claim 11, comprising:
13. The wireless communications transceiver according to claim 12, comprising:
14. The wireless communications transceiver according to claim 13, comprising:
15. The wireless communications transceiver according to claim 14, comprising:
16. The wireless communications transceiver according to claim 15, wherein the receiver comprises one or more polyphase filters.
17. The wireless communications transceiver according to claim 14, wherein the wireless communications device supports orthogonal frequency division modulation.
18. The wireless communications transceiver according to claim 17, wherein the wireless communications device supports communications over a wireless local area network.
19. The wireless communications transceiver according to claim 14, wherein the mixer comprises a subsampling mixer.
20. The wireless communications transceiver according to claim 2, wherein the local oscillator is integrated on the integrated circuit chip.
21. The wireless communications transceiver according to claim 2, wherein the mixer comprises a quadrature mixer.
22. The wireless communications transceiver according to claim 2, wherein the spread spectrum modulation comprises direct sequence spread spectrum modulation.
23. The wireless communications transceiver according to claim 2, wherein the wireless communications device supports wireless local area network communications and different modes of wireless spread spectrum communications.
24. The wireless communications transceiver according to claim 2, wherein the wireless communications device supports different data rates and different modulation schemes.
25. The wireless communications transceiver according to claim 2, wherein the wireless communications device supports wireless local area network communications and Bluetooth communications.
26. The wireless communications transceiver according to claim 2, wherein the wireless communications device supports different data rates.
27. The wireless communications transceiver according to claim 2, wherein the wireless communications device supports Bluetooth communications.
28. The wireless communications transceiver according to claim 2, wherein the wireless communications device supports personal area networks.
29. The wireless communications transceiver according to claim 1, wherein the mixer comprises a track-and-hold circuitry.
30. The wireless communications transceiver according to claim 29,
wherein the track-and-hold circuitry comprises a transistor and a current source,
wherein the transistor has an input node and an output node, the input node being operatively coupled to the first input of the mixer, the output node being operatively coupled to the output of the mixer, and
wherein the current source is operatively coupled to the output of the mixer.
31. The wireless communications transceiver according to claim 29, wherein the mixer comprises a buffer that is operatively coupled to the track-and-hold circuitry.
32. The wireless communications transceiver according to claim 31, wherein the mixer comprises a differential pair amplifier that is operatively coupled to the track-and-hold circuitry.
33. The wireless communications transceiver according to claim 29, wherein the receiver comprises one or more polyphase filters.
The present application is a CONTINUATION OF U.S. application Ser. No. 11/780,905, filed Jul. 20, 2007, which is a CONTINUATION of U.S. application Ser. No. 09/695,715, filed Oct. 23, 2000, now issued U.S. Pat. No. 7,299,006, which is a CONTINUATION-IN-PART of U.S. application Ser. No. 09/634,552, filed Aug. 8, 2000.
Said U.S. application Ser. No. 09/634,552 claims benefit from and priority to the following U.S. provisional applications: U.S. Application No. 60/160,806, filed Oct. 21, 1999; U.S. Application No. 60/163,487, filed Nov. 4, 1999; U.S. Application No. 60/163,398, filed Nov. 4, 1999; U.S. Application No. 60/164,442, filed Nov. 9, 1999; U.S. Application No. 60/164,194, filed Nov. 9, 1999; U.S. Application No. 60/164,314, filed Nov. 9, 1999; U.S. Application No. 60/165,234, filed Nov. 11, 1999; U.S. Application No. 60/165,239, filed Nov. 11, 1999; U.S. Application No. 60/165,356, filed Nov. 12, 1999; U.S. Application No. 60/165,355, filed Nov. 12, 1999; U.S. application Ser. No. 60/172,348, filed Dec. 16, 1999; U.S. Application No. 60/201,335, filed May 2, 2000; U.S. Application No. 60/201,157, filed May 2, 2000; U.S. Application No. 60/201,179, filed May 2, 2000; U.S. Application No. 60/202,997, filed May 10, 2000; and U.S. application Ser. No. 60/201,330, filed May 2, 2000.
FIG. 35 is an electrical diagram of the wide tuning range VCO of FIG. 34 in accordance with an exemplary embodiment of the present invent