Source: http://www.google.com/patents/US7974593?dq=6,373,753
Timestamp: 2013-12-05 09:36:52
Document Index: 560090660

Matched Legal Cases: ['art 16', 'art 16', 'art 16', 'art 16', 'art 16', 'art 16', 'art 16', 'art 16']

Patent US7974593 - Apparatus and method for calibration of gain and/or phase imbalance and/or ... - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Advanced Patent Search | Sign inAdvanced Patent SearchPatentsAn example of a radio frequency (RF) transmitter system for communication may include a transmit pre-distortion module configured to provide a second transmit calibration signal during a transmit calibration mode based on a first transmit calibration signal and one or more transmit calibration adjustment...http://www.google.com/patents/US7974593?utm_source=gb-gplus-sharePatent US7974593 - Apparatus and method for calibration of gain and/or phase imbalance and/or DC offset in a communication systemPublication numberUS7974593 B2Publication typeGrantApplication numberUS 12/575,455Publication dateJul 5, 2011Filing dateOct 7, 2009Priority dateJun 23, 2006Also published asCN101507153A, CN101507153B, DE112007001764T5, US7620373, US7907916, US7965988, US20070298733, US20100022199, US20100022200, US20100022208, WO2008002389A2, WO2008002389A3Publication number12575455, 575455, US 7974593 B2, US 7974593B2, US-B2-7974593, US7974593 B2, US7974593B2InventorsJean-Pierre Joseph Cole, David A. Rowe, Craig A. HornbuckleOriginal AssigneeSierra Monolithics, Inc.Patent Citations (14), Non-Patent Citations (8), Referenced by (10), Classifications (10), Legal Events (2) External Links: USPTO, USPTO Assignment, EspacenetApparatus and method for calibration of gain and/or phase imbalance and/or DC offset in a communication systemUS 7974593 B2Abstract An example of a radio frequency (RF) transmitter system for communication may include a transmit pre-distortion module configured to provide a second transmit calibration signal during a transmit calibration mode based on a first transmit calibration signal and one or more transmit calibration adjustment signals. The one or more transmit calibration adjustment signals may include an offset parameter associated with DC offset and an imbalance parameter associated with at least one of gain and phase imbalances. The system may include a transmit channel frequency converter coupled to the transmit pre-distortion module. The transmit channel frequency converter may be configured to provide a fourth transmit calibration signal during the transmit calibration mode based on a third transmit calibration signal and a transmit reference signal.
CROSS-REFERENCES TO RELATED APPLICATIONS This application is a divisional application of U.S. patent application Ser. No. 11/590,278, entitled �APPARATUS AND METHOD FOR CALIBRATION OF GAIN AND/OR PHASE IMBALANCE AND/OR DC OFFSET IN A COMMUNICATION SYSTEM,� filed Oct. 30, 2006, which claims the benefit of priority under 35 U.S.C. �119 from U.S. Provisional Patent Application Ser. No. 60/816,240 entitled �CALIBRATION OR CORRECTION OF QUADRATURE ERRORS AND/OR DC OFFSET ERRORS IN A TRANSMITTER AND/OR RECEIVER,� filed on Jun. 23, 2006, all of which are hereby incorporated by reference in their entirety for all purposes.
INTRODUCTION Transceiver systems and off-line calibration procedures for transceiver systems are described in accordance with one embodiment of the present invention. According to one embodiment, these procedures involve the participation of a baseband subsystem or device. The overall calibration strategy and the technique to be applied may require operation of a radio frequency (RF) subsystem and a baseband subsystem. The procedures herein described make as few assumptions as possible about the baseband device to accommodate a variety of such devices. For any given baseband device, which may have specific calibration features not assumed herein, there may be other calibration strategies with additional benefits. To meet the system specifications defined, for example, in the 802.16 standard, an RF system needs to be calibrated for gain and/or phase imbalance and/or DC offset.
I ⁢ ⁢ R = Δ ⁢ ⁢ G 2 + Δ ⁢ ⁢ ϕ 2 4 ( 1 ) Where: IR=Image rejection power ratio
Patent CitationsCited PatentFiling datePublication dateApplicantTitleUS6509801Jun 29, 2001Jan 21, 2003Sierra Monolithics, Inc.Multi-gigabit-per-sec clock recovery apparatus and method for optical communicationsUS6931343Sep 19, 2003Aug 16, 2005Globespanvirata, IncorporatedOn-signal quadrature modulator calibrationUS6937668Mar 28, 2001Aug 30, 2005Spectra Wireless, Inc.Method of and apparatus for performing modulationUS7139540Apr 15, 2005Nov 21, 2006Broadcom CorporationAdaptive radio transceiver with calibrationUS7286572Jan 10, 2003Oct 23, 2007Sierra Monolithics, Inc.Highly integrated, high-speed, low-power serdes and systemsUS7412006Jul 24, 2003Aug 12, 2008Freescale Semiconductor, Inc.Method and apparatus for RF carrier feedthrough suppressionUS7620373Oct 30, 2006Nov 17, 2009Sierra Monolithics, Inc.Apparatus and method for calibration of gain and/or phase imbalance and/or DC offset in a communication systemUS20030053561Jun 27, 2002Mar 20, 2003Nokia CorporationTuning a stationUS20040061644Sep 10, 2003Apr 1, 2004Lockheed Martin CorporationCCE calibration with an array of calibration probes interleaved with the array antennaUS20040165678Aug 27, 2002Aug 26, 2004Zivi NadiriMethod for measuring and compensating gain and phase imbalances in quadrature modulatorsUS20050018787Jul 25, 2003Jan 27, 2005Aryan SaedDigital branch calibrator for an RF transmitterUS20050048938Oct 12, 2004Mar 3, 2005Sahota Gurkanwal SinghSystem and method for power control calibration and a wireless communication deviceEP0598585A2Nov 15, 1993May 25, 1994Linear Modulation Technology LtdAutomatic calibration of the quadrature balance within a cartesian amplifierEP1035691A2Jan 31, 2000Sep 13, 2000Intersil CorporationDC offset correction using successive approximationNon-Patent CitationsReference1802.16(TM) IEEE Standard for Local and Metropolitan Area Networks; Part 16: Air Interface for Fixed Broadband Wireless Access Systems; IEEE Std 802.16-2004 (revision of IEEE Std 802.16-2001); IEEE Computer Society and the IEEE Microwave Theory and Techniques Society; Oct. 1, 2004; pp. 1-895.2802.16� IEEE Standard for Local and Metropolitan Area Networks; Part 16: Air Interface for Fixed Broadband Wireless Access Systems; IEEE Std 802.16-2004 (revision of IEEE Std 802.16-2001); IEEE Computer Society and the IEEE Microwave Theory and Techniques Society; Oct. 1, 2004; pp. 1-895.3IEEE 802.16 Working Group on Broadband Wireless Access; http://wirelessMAN.org; IEEE802.16-05/070;IEEE P802.16-2004/Cor1/D5 ("Draft Corrigendum to IEEE Standard for Local and Metropolitan Area Networks-Part 16: Air Interface for Fixed Broadband Wireless Access Systems"); Sep. 16, 2005; SPID 154216881.25436; IEEE-SA Standards Board Form for Submittal of Proposed Standards; Coordination Comments and Responses; pp. 1-6.4IEEE 802.16 Working Group on Broadband Wireless Access; http://wirelessMAN.org; IEEE802.16-05/070;IEEE P802.16-2004/Cor1/D5 ("Draft Corrigendum to IEEE Standard for Local and Metropolitan Area Networks�Part 16: Air Interface for Fixed Broadband Wireless Access Systems"); Sep. 16, 2005; SPID 154216881.25436; IEEE-SA Standards Board Form for Submittal of Proposed Standards; Coordination Comments and Responses; pp. 1-6.5IEEE 802.16 Working Group on Broadband Wireless Access; http://wirelessMAN.org; IEEE802.16-05/070r1;IEEE P802.16-2004/Cor1/D5 ("Draft Corrigendum to IEEE Standard for Local and Metropolitan Area Networks-Part 16; Air Interface for Fixed Broadband Wireless Access Systems");Sep. 27, 2005; SPID 155215280.7971; IEEE-SA Standards Board Form for Submittal of Proposed Standards; Coordination Comments and Responses; pp. 1-7.6IEEE 802.16 Working Group on Broadband Wireless Access; http://wirelessMAN.org; IEEE802.16-05/070r1;IEEE P802.16-2004/Cor1/D5 ("Draft Corrigendum to IEEE Standard for Local and Metropolitan Area Networks�Part 16; Air Interface for Fixed Broadband Wireless Access Systems");Sep. 27, 2005; SPID 155215280.7971; IEEE-SA Standards Board Form for Submittal of Proposed Standards; Coordination Comments and Responses; pp. 1-7.7IEEE 802.16 Working Group on Broadband Wireless Access; http://wirelessMAN.org; IEEE802.16-05/070r2;IEEE P802.16-2004/Cor1/D5 ("Draft Corrigendum to IEEE Standard for Local and Metropolitan Area Networks-Part 16; Air Interface for Fixed Broadband Wireless Access Systems");Sep. 28, 2005; SPID 155250025.28701; IEEE-SA Standards Board Form for Submittal of Proposed Standards; Coordination Comments and Responses; pp. 1-7.8IEEE 802.16 Working Group on Broadband Wireless Access; http://wirelessMAN.org; IEEE802.16-05/070r2;IEEE P802.16-2004/Cor1/D5 ("Draft Corrigendum to IEEE Standard for Local and Metropolitan Area Networks�Part 16; Air Interface for Fixed Broadband Wireless Access Systems");Sep. 28, 2005; SPID 155250025.28701; IEEE-SA Standards Board Form for Submittal of Proposed Standards; Coordination Comments and Responses; pp. 1-7.Referenced byCiting PatentFiling datePublication dateApplicantTitleUS8077799 *Apr 17, 2008Dec 13, 2011Nokia CorporationApparatus and method to adjust a phase and frequency of a digital signalUS8175549 *Oct 17, 2008May 8, 2012Texas Instruments IncorporatedClosed loop transmitter IQ calibrationUS8208881 *Dec 2, 2008Jun 26, 2012Mediatek Inc.Radio frequency receiver and radio frequency transmitterUS8437385Apr 9, 2012May 7, 2013National Instruments CorporationMeasuring the DC properties of a signal path between transmitter and receiverUS8442150Feb 24, 2012May 14, 2013National Instruments CorporationMeasurement of transmitter impairments using offset local oscillatorsUS8446937Apr 9, 2012May 21, 2013National Instruments CorporationTechnique for the measurement of I/Q impairments associated with a sampled complex signalUS8462882Apr 9, 2012Jun 11, 2013National Instruments CorporationMeasurement of transmitter I/Q impairments using shared local oscillatorsUS8478211 *Dec 8, 2009Jul 2, 2013Motorola Solutions, Inc.Adaptive cartesian loop transmitter for broadband and optimal loop stability adjustmentUS20110092168 *Oct 21, 2009Apr 21, 2011Broadcom CorporationCalibration of a communications transmitter to optimize DC offset rejection and image rejectionUS20120001694 *Dec 8, 2009Jan 5, 2012Motorola Solutions, Inc.Adaptive cartesian loop transmitter for broadband and optimal loop stability adjustment* Cited by examinerClassifications U.S. Classification455/114.3, 375/296International ClassificationH04K3/00, H04B1/06Cooperative ClassificationH04B17/0037, H04B17/0012, H04B7/08, H04B17/003European ClassificationH04B17/00A1T, H04B17/00A3Legal EventsDateCodeEventDescriptionMay 2, 2013ASAssignmentFree format text: RELEASE BY SECURED PARTY;ASSIGNOR:JEFFERIES FINANCE LLC;REEL/FRAME:030341/0059Owner name: SIERRA MONOLITHICS, INC., CALIFORNIAOwner name: SEMTECH CORPORATION, CALIFORNIAEffective date: 20130502Owner name: HSBC BANK USA, NATIONAL ASSOCIATION, NEW YORKFree format text: SECURITY AGREEMENT;ASSIGNORS:SEMTECH CORPORATION;SEMTECH NEW YORK CORPORATION;SIERRA MONOLITHICS, INC.;REEL/FRAME:030341/0099Owner name: SEMTECH NEW YORK CORPORATION, CALIFORNIAMar 20, 2012ASAssignmentOwner name: JEFFERIES FINANCE LLC, NEW YORKEffective date: 20120320Free format text: GRANT OF SECURITY INTEREST;ASSIGNORS:SEMTECH CORPORATION;SEMTECH NEW YORK CORPORATION;SIERRA MONOLITHICS, INC.;REEL/FRAME:027897/0141RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services©2012 Google