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
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
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 (de) | 2015-07-10 |
Family
ID=49324987
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IN1915MUN2014 IN2014MN01915A (de) | 2012-04-16 | 2013-01-23 |
Country Status (5)
Country | Link |
---|---|
US (1) | US8908575B2 (de) |
EP (1) | EP2839586B1 (de) |
CN (1) | CN104247281B (de) |
IN (1) | IN2014MN01915A (de) |
WO (1) | WO2013158173A1 (de) |
Families Citing this family (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9755707B2 (en) * | 2013-01-30 | 2017-09-05 | 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 (ja) * | 2015-03-31 | 2018-05-30 | 株式会社東芝 | 無線装置、折り返し試験装置、折り返し試験方法 |
WO2016164479A1 (en) * | 2015-04-06 | 2016-10-13 | Analog Devices, Inc. | Circuits and systems for transmitter calibration |
EP3342046B1 (de) * | 2015-08-27 | 2019-07-03 | Telefonaktiebolaget LM Ericsson (PUBL) | Verfahren und dualband-funkempfänger zur handhabung eines analogen dualband-funksignals |
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 (ko) * | 2015-11-30 | 2019-05-22 | 아나로그 디바이시즈 인코포레이티드 | 트랜시버 내 국부 발진기의 위상 동기화를 위한 장치 및 방법 |
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 (zh) * | 2016-06-28 | 2018-03-21 | 瑞昱半導體股份有限公司 | 可依據外部振盪信號進行同相/正交相不匹配校正的接收電路 |
EP3300267B1 (de) * | 2016-09-21 | 2021-02-24 | Intel IP Corporation | Verfahren zur erhöhung einer genauigkeit einer rückkopplungskalibrierung eines sendeempfängers und sendeempfängerschaltung |
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 |
AU2019215122B2 (en) | 2018-02-02 | 2022-08-04 | 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 |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI19991977A (fi) * | 1999-09-16 | 2001-03-16 | Nokia Networks Oy | Menetelmä ja laite signaalin tuottamiseksi |
EP1120858B1 (de) | 1999-12-15 | 2007-04-04 | Nippon Telegraph and Telephone Corporation | Sendeempfänger mit adaptiver Gruppenantenne |
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 |
US7962113B2 (en) * | 2005-10-31 | 2011-06-14 | Silicon Laboratories Inc. | Receiver with multi-tone wideband I/Q mismatch calibration and method therefor |
US7672645B2 (en) * | 2006-06-15 | 2010-03-02 | Bitwave Semiconductor, Inc. | Programmable transmitter architecture for non-constant and constant envelope modulation |
EP2052479A2 (de) | 2006-07-11 | 2009-04-29 | Nxp B.V. | Kalibrierung von übertragungssignalen bei fdd-sendeempfangsgeräten |
US7715813B2 (en) * | 2007-01-15 | 2010-05-11 | Mediatek Singapore Pte Ltd | Receiver having tunable amplifier with integrated tracking filter |
US8126452B2 (en) | 2007-11-29 | 2012-02-28 | Intel Mobile Communications GmbH | Systems and methods for self-calibrating transceivers |
US8135055B2 (en) | 2008-07-30 | 2012-03-13 | Qualcomm Incorporated | I/Q calibration of transmit and receive paths in OFDM FDD communication systems |
US8295845B1 (en) * | 2008-12-04 | 2012-10-23 | Qualcomm Atheros, Inc. | Transceiver I/Q mismatch calibration |
JP5334318B2 (ja) | 2009-11-30 | 2013-11-06 | ルネサスエレクトロニクス株式会社 | 通信用半導体集積回路およびその動作方法 |
-
2013
- 2013-01-22 US US13/747,339 patent/US8908575B2/en active Active
- 2013-01-23 EP EP13704658.7A patent/EP2839586B1/de not_active Not-in-force
- 2013-01-23 CN CN201380019957.4A patent/CN104247281B/zh active Active
- 2013-01-23 WO PCT/US2013/022793 patent/WO2013158173A1/en active Application Filing
- 2013-01-23 IN IN1915MUN2014 patent/IN2014MN01915A/en unknown
Also Published As
Publication number | Publication date |
---|---|
US20130272175A1 (en) | 2013-10-17 |
EP2839586A1 (de) | 2015-02-25 |
CN104247281A (zh) | 2014-12-24 |
EP2839586B1 (de) | 2017-10-11 |
US8908575B2 (en) | 2014-12-09 |
CN104247281B (zh) | 2016-08-17 |
WO2013158173A1 (en) | 2013-10-24 |
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