AR044609A1 - Un metodo y un sistema para determinar al menos un valor de compensacion de desplazamiento de dc (corriente continua) utilizado para suprimir una fuga de portadora - Google Patents

Un metodo y un sistema para determinar al menos un valor de compensacion de desplazamiento de dc (corriente continua) utilizado para suprimir una fuga de portadora

Info

Publication number
AR044609A1
AR044609A1 ARP040101937A ARP040101937A AR044609A1 AR 044609 A1 AR044609 A1 AR 044609A1 AR P040101937 A ARP040101937 A AR P040101937A AR P040101937 A ARP040101937 A AR P040101937A AR 044609 A1 AR044609 A1 AR 044609A1
Authority
AR
Argentina
Prior art keywords
compensation value
suppress
carrier leak
continuous current
displacement compensation
Prior art date
Application number
ARP040101937A
Other languages
English (en)
Inventor
Alpaslan Demir
Leonid Kazakevich
Tanbir Haque
Original Assignee
Interdigital Tech Corp
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 Interdigital Tech Corp filed Critical Interdigital Tech Corp
Publication of AR044609A1 publication Critical patent/AR044609A1/es

Links

Classifications

    • 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
    • H04B1/02—Transmitters
    • H04B1/04—Circuits
    • 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
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/30—Circuits for homodyne or synchrodyne receivers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/38—Angle modulation by converting amplitude modulation to angle modulation
    • H03C3/40—Angle modulation by converting amplitude modulation to angle modulation using two signal paths the outputs of which have a predetermined phase difference and at least one output being amplitude-modulated
    • H03C3/406—Angle modulation by converting amplitude modulation to angle modulation using two signal paths the outputs of which have a predetermined phase difference and at least one output being amplitude-modulated using a feedback loop containing mixers or demodulators
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/02—Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation
    • H04L27/04—Modulator circuits; Transmitter circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0016—Stabilisation of local oscillators
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0018—Arrangements at the transmitter end

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transmitters (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

Un método y sistema para determinar al menos un valor de compensación de desplazamiento de DC utilizado para suprimir una fuga de portadora que se produce en pasos de señal real e imaginaria en un transmisor de radio análogo cuando se detecta un cambio significativo de temperatura en el transmisor. Al menos una señal de desplazamiento de DC que tiene un nivel que corresponde al menos un valor de compensación de desplazamiento de DC es provista a un módulo de compensación digital de desplazamiento de DC que ajusta el nivel de DC de al menos uno de los pasos de señal real e imaginaria.
ARP040101937A 2003-06-06 2004-06-04 Un metodo y un sistema para determinar al menos un valor de compensacion de desplazamiento de dc (corriente continua) utilizado para suprimir una fuga de portadora AR044609A1 (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US47674803P 2003-06-06 2003-06-06
US10/739,844 US7376200B2 (en) 2003-06-06 2003-12-18 Method and apparatus for suppressing carrier leakage

Publications (1)

Publication Number Publication Date
AR044609A1 true AR044609A1 (es) 2005-09-21

Family

ID=33514092

Family Applications (1)

Application Number Title Priority Date Filing Date
ARP040101937A AR044609A1 (es) 2003-06-06 2004-06-04 Un metodo y un sistema para determinar al menos un valor de compensacion de desplazamiento de dc (corriente continua) utilizado para suprimir una fuga de portadora

Country Status (10)

Country Link
US (1) US7376200B2 (es)
EP (1) EP1632074A4 (es)
JP (1) JP2006527530A (es)
KR (2) KR20060064603A (es)
AR (1) AR044609A1 (es)
CA (1) CA2528534A1 (es)
MX (1) MXPA05013001A (es)
NO (1) NO20060035L (es)
TW (3) TW200539583A (es)
WO (1) WO2005002063A2 (es)

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US7697905B2 (en) * 2004-09-10 2010-04-13 Qualcomm Incorporation Local oscillator feedthrough cancellation scheme to remove RF and baseband offsets
US8032095B1 (en) 2005-03-03 2011-10-04 Marvell International Ltd. Method and apparatus for detecting carrier leakage in a wireless or similar system
GB0508205D0 (en) 2005-04-22 2005-06-01 Ttp Communications Ltd Assessing the performance of radio devices
US7653147B2 (en) * 2005-08-17 2010-01-26 Intel Corporation Transmitter control
JP4758781B2 (ja) * 2006-01-31 2011-08-31 富士通株式会社 Ｄｃオフセット補正装置及びその方法
TWI311244B (en) * 2006-04-07 2009-06-21 Hon Hai Prec Ind Co Ltd System for cancelling dc offset
US20080014873A1 (en) * 2006-07-12 2008-01-17 Krayer Yvonne L Methods and apparatus for adaptive local oscillator nulling
US7881681B2 (en) 2006-08-28 2011-02-01 Mediatek Inc. Self-calibrating direct conversion transmitter with converting/steering device
WO2008103089A1 (en) * 2007-02-22 2008-08-28 Telefonaktiebolaget Lm Ericsson (Publ) A method and a device for reduced interference in a cellular access system
KR100869919B1 (ko) * 2007-04-23 2008-11-21 지씨티 세미컨덕터 인코포레이티드 Ｉｑ 불일치, 반송파 누설 및 ｄｃ 옵셋 교정 장치 및 방법
EP2222045A1 (en) * 2007-12-10 2010-08-25 NEC Corporation Wireless communication device and dc offset adjustment method
WO2009075100A1 (ja) * 2007-12-12 2009-06-18 Panasonic Corporation 無線回路装置
JP2009165112A (ja) * 2007-12-12 2009-07-23 Panasonic Corp 無線回路装置
JP2010213107A (ja) * 2009-03-11 2010-09-24 Fujitsu Semiconductor Ltd 通信装置
KR101426113B1 (ko) * 2010-03-03 2014-08-06 (주) 네톰 무선 송수신기의 송신누설신호의 상쇄신호 탐색방법 및 장치
JP2012085100A (ja) * 2010-10-12 2012-04-26 Nec Casio Mobile Communications Ltd 無線通信装置およびキャリアリーク低減方法
US8718577B1 (en) * 2012-11-29 2014-05-06 Exalt Communications Incorporated Method and apparatus for minimizing local oscillator leakage in a transmitter
US9025648B2 (en) * 2013-02-22 2015-05-05 Tektronix, Inc. Measurement of DC offsets in IQ modulators
JP5932689B2 (ja) * 2013-03-15 2016-06-08 パナソニック株式会社 送信装置
US9136989B2 (en) 2013-10-10 2015-09-15 Motorola Solutions, Inc. Method and apparatus for reducing carrier leakage
US10763977B2 (en) * 2015-03-09 2020-09-01 Sony Corporation Device and method for determining a DC component
EP3208620B8 (en) * 2016-02-19 2023-03-01 Rohde & Schwarz GmbH & Co. KG Measuring system for over-the-air power measurements
JP2017195466A (ja) * 2016-04-19 2017-10-26 富士通株式会社 無線通信装置及び異常検出方法
US11177847B2 (en) * 2019-03-22 2021-11-16 Mediatek Singapore Pte. Ltd. Method for compensating for degradation of signal during transmission of the signal and transmitter utilizing the same
TWI869270B (zh) * 2024-04-23 2025-01-01 瑞昱半導體股份有限公司 傳送器以及用來在傳送器中降低本地振盪溢漏的方法

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Also Published As

Publication number Publication date
EP1632074A4 (en) 2007-04-25
KR20060064603A (ko) 2006-06-13
MXPA05013001A (es) 2006-03-17
JP2006527530A (ja) 2006-11-30
KR100794983B1 (ko) 2008-01-16
KR20060028766A (ko) 2006-04-03
US7376200B2 (en) 2008-05-20
US20040252782A1 (en) 2004-12-16
NO20060035L (no) 2006-01-04
TW200428795A (en) 2004-12-16
CA2528534A1 (en) 2005-01-06
EP1632074A2 (en) 2006-03-08
TW200539583A (en) 2005-12-01
TWI237449B (en) 2005-08-01
WO2005002063A2 (en) 2005-01-06
TW200814552A (en) 2008-03-16
WO2005002063A3 (en) 2005-10-13

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