IN2014MN01915A - - Google Patents

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Publication number
IN2014MN01915A
IN2014MN01915A IN1915MUN2014A IN2014MN01915A IN 2014MN01915 A IN2014MN01915 A IN 2014MN01915A IN 1915MUN2014 A IN1915MUN2014 A IN 1915MUN2014A IN 2014MN01915 A IN2014MN01915 A IN 2014MN01915A
Authority
IN
India
Prior art keywords
mixer
local oscillator
oscillator signal
frequency
transmit
Prior art date
Application number
Inventor
Masoud Zargari
ALIBEIK Shahram ABDOLLAHI
Original Assignee
Qualcomm Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Qualcomm Inc filed Critical Qualcomm Inc
Publication of IN2014MN01915A publication Critical patent/IN2014MN01915A/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/50—Circuits using different frequencies for the two directions of communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/10—Monitoring; Testing of transmitters
    • H04B17/11—Monitoring; Testing of transmitters for calibration
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/20—Monitoring; Testing of receivers
    • H04B17/21—Monitoring; Testing of receivers for calibration; for correcting measurements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/36—Modulator circuits; Transmitter circuits
    • H04L27/366—Arrangements for compensating undesirable properties of the transmission path between the modulator and the demodulator
    • H04L27/367—Arrangements for compensating undesirable properties of the transmission path between the modulator and the demodulator using predistortion
    • H04L27/368—Arrangements for compensating undesirable properties of the transmission path between the modulator and the demodulator using predistortion adaptive predistortion
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/10—Monitoring; Testing of transmitters
    • H04B17/11—Monitoring; Testing of transmitters for calibration
    • H04B17/14—Monitoring; Testing of transmitters for calibration of the whole transmission and reception path, e.g. self-test loop-back

Abstract

A frequency division duplexing (FDD) transceiver includes a first mixer to up convert a transmit signal and a first switch coupled to the first mixer to selectively provide a transmit local oscillator signal or a receive local oscillator signal to the first mixer. The transmit local oscillator signal has a first frequency and the receive local oscillator signal has a second frequency distinct from the first frequency. The FDD transceiver also includes a second mixer to down convert a receive signal and a second switch coupled to the second mixer to selectively provide the transmit local oscillator signal or the receive local oscillator signal to the second mixer.
IN1915MUN2014 2012-04-16 2013-01-23 IN2014MN01915A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US201261624978P 2012-04-16 2012-04-16
US13/747,339 US8908575B2 (en) 2012-04-16 2013-01-22 Methods and systems for calibrating a frequency-division duplexing transceiver
PCT/US2013/022793 WO2013158173A1 (en) 2012-04-16 2013-01-23 Methods and systems for calibrating a frequency-division duplexing transceiver

Publications (1)

Publication Number Publication Date
IN2014MN01915A true IN2014MN01915A (en) 2015-07-10

Family

ID=49324987

Family Applications (1)

Application Number Title Priority Date Filing Date
IN1915MUN2014 IN2014MN01915A (en) 2012-04-16 2013-01-23

Country Status (5)

Country Link
US (1) US8908575B2 (en)
EP (1) EP2839586B1 (en)
CN (1) CN104247281B (en)
IN (1) IN2014MN01915A (en)
WO (1) WO2013158173A1 (en)

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EP2951935B1 (en) * 2013-01-30 2017-11-22 Telefonaktiebolaget LM Ericsson (publ) Method and apparatus for calibrating multiple antennas
US20160294591A1 (en) 2015-03-31 2016-10-06 Alcatel-Lucent Usa Inc. Multichannel receiver
US9444560B1 (en) * 2013-05-10 2016-09-13 Marvell International Ltd. Method and apparatus for IQ imbalance estimation
US11012201B2 (en) * 2013-05-20 2021-05-18 Analog Devices, Inc. Wideband quadrature error detection and correction
US9584175B2 (en) 2014-12-16 2017-02-28 Nxp Usa, Inc. Radio frequency transceiver loopback testing
JP6334451B2 (en) * 2015-03-31 2018-05-30 株式会社東芝 Wireless device, folding test device, folding test method
WO2016164479A1 (en) * 2015-04-06 2016-10-13 Analog Devices, Inc. Circuits and systems for transmitter calibration
WO2017031754A1 (en) * 2015-08-27 2017-03-02 Telefonaktiebolaget Lm Ericsson (Publ) Method and dual band radio receiver for handling analog dual band radio signal
US9401801B1 (en) * 2015-09-23 2016-07-26 Qualcomm Incorporated Multi-chip TX beamforming for per-packet switching with reduced LO leakage
US9673847B1 (en) 2015-11-25 2017-06-06 Analog Devices, Inc. Apparatus and methods for transceiver calibration
KR101980862B1 (en) * 2015-11-30 2019-05-22 아나로그 디바이시즈 인코포레이티드 Apparatus and methods for phase synchronization of local oscillators in a transceiver
US10033443B2 (en) * 2016-04-15 2018-07-24 Alcatel-Lucent Usa Inc. MIMO transceiver suitable for a massive-MIMO system
US9979408B2 (en) 2016-05-05 2018-05-22 Analog Devices, Inc. Apparatus and methods for phase synchronization of phase-locked loops
TWI619355B (en) * 2016-06-28 2018-03-21 瑞昱半導體股份有限公司 Receiving circuit capable of performing i/q mismatch calibration based on external oscillating signal
EP3300267B1 (en) * 2016-09-21 2021-02-24 Intel IP Corporation Method for increasing an accuracy of a transceiver loopback calibration and transceiver circuit
US10374838B2 (en) * 2017-06-30 2019-08-06 Futurewei Technologies, Inc. Image distortion correction in a wireless terminal
US10135472B1 (en) 2017-08-29 2018-11-20 Analog Devices Global Apparatus and methods for compensating radio frequency transmitters for local oscillator leakage
US10805130B2 (en) 2017-09-12 2020-10-13 Intel IP Corporation Signal cancellation system and method
EP3725001B1 (en) 2018-02-02 2022-09-14 Viasat, Inc. Radio frequency loopback for transceivers
US11082051B2 (en) 2018-05-11 2021-08-03 Analog Devices Global Unlimited Company Apparatus and methods for timing offset compensation in frequency synthesizers
US11391815B2 (en) * 2018-10-26 2022-07-19 Texas Instmments Incorporated Methods and apparatus to compensate for radar system calibration changes
US11018840B2 (en) * 2019-01-17 2021-05-25 Analog Devices International Unlimited Company Single local oscillator in a multi-band frequency division duplex transceiver
US11374803B2 (en) 2020-10-16 2022-06-28 Analog Devices, Inc. Quadrature error correction for radio transceivers
US11476889B2 (en) * 2021-03-03 2022-10-18 Apple Inc. Wireless circuitry with loopback path all-pass filters
US11848712B2 (en) * 2022-04-22 2023-12-19 Dell Products, L.P. Calibration and test of radios spanning digital and analog domains

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FI19991977A (en) * 1999-09-16 2001-03-16 Nokia Networks Oy Method and apparatus for generating a signal
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US7248625B2 (en) 2002-09-05 2007-07-24 Silicon Storage Technology, Inc. Compensation of I-Q imbalance in digital transceivers
US6670900B1 (en) * 2002-10-25 2003-12-30 Koninklijke Philips Electronics N.V. Quadrature mismatch compensation
TW200501611A (en) * 2003-03-12 2005-01-01 Koninkl Philips Electronics Nv Transceiver with mismatch compensation scheme
US7362826B2 (en) * 2003-09-29 2008-04-22 Silicon Laboratories, Inc. Receiver including an oscillation circuit for generating an image rejection calibration tone
US7181205B1 (en) * 2004-05-11 2007-02-20 Rf Micro Devices, Inc. I/Q calibration
US7463866B1 (en) * 2005-04-13 2008-12-09 Rf Micro Devices, Inc. I/Q mismatch calibration of direct conversion transceivers using the OFDM short training sequence
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JP5334318B2 (en) 2009-11-30 2013-11-06 ルネサスエレクトロニクス株式会社 Semiconductor integrated circuit for communication and operation method thereof

Also Published As

Publication number Publication date
CN104247281B (en) 2016-08-17
US8908575B2 (en) 2014-12-09
WO2013158173A1 (en) 2013-10-24
US20130272175A1 (en) 2013-10-17
CN104247281A (en) 2014-12-24
EP2839586B1 (en) 2017-10-11
EP2839586A1 (en) 2015-02-25

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