TW346704B - Direct up-conversion of digital communications signals into analog if output signals by means of pre-distortion filter and frequency replica-selecting bandpass filter - Google Patents

Direct up-conversion of digital communications signals into analog if output signals by means of pre-distortion filter and frequency replica-selecting bandpass filter

Info

Publication number
TW346704B
TW346704B TW086107030A TW86107030A TW346704B TW 346704 B TW346704 B TW 346704B TW 086107030 A TW086107030 A TW 086107030A TW 86107030 A TW86107030 A TW 86107030A TW 346704 B TW346704 B TW 346704B
Authority
TW
Taiwan
Prior art keywords
baseband signal
sampled
analog
signal
output signal
Prior art date
Application number
TW086107030A
Other languages
English (en)
Inventor
B Chester David
D Roberts Richard
Original Assignee
Harris 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 Harris Corp filed Critical Harris Corp
Application granted granted Critical
Publication of TW346704B publication Critical patent/TW346704B/zh

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
    • H03D7/16—Multiple-frequency-changing
    • H03D7/165—Multiple-frequency-changing at least two frequency changers being located in different paths, e.g. in two paths with carriers in quadrature
    • H03D7/166—Multiple-frequency-changing at least two frequency changers being located in different paths, e.g. in two paths with carriers in quadrature using two or more quadrature frequency translation stages
    • 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
    • H03C3/403—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 two quadrature frequency conversion stages in cascade
TW086107030A 1996-06-25 1997-05-24 Direct up-conversion of digital communications signals into analog if output signals by means of pre-distortion filter and frequency replica-selecting bandpass filter TW346704B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/671,025 US5930301A (en) 1996-06-25 1996-06-25 Up-conversion mechanism employing side lobe-selective pre-distortion filter and frequency replica-selecting bandpass filter respectively installed upstream and downstream of digital-to-analog converter

Publications (1)

Publication Number Publication Date
TW346704B true TW346704B (en) 1998-12-01

Family

ID=24692841

Family Applications (1)

Application Number Title Priority Date Filing Date
TW086107030A TW346704B (en) 1996-06-25 1997-05-24 Direct up-conversion of digital communications signals into analog if output signals by means of pre-distortion filter and frequency replica-selecting bandpass filter

Country Status (5)

Country Link
US (1) US5930301A (zh)
EP (1) EP0817369A3 (zh)
JP (1) JPH1075272A (zh)
CN (1) CN1174450A (zh)
TW (1) TW346704B (zh)

Families Citing this family (97)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100251561B1 (ko) * 1997-06-19 2000-04-15 윤종용 디지털통신시스템의송신기선형화장치및방법
US6144712A (en) * 1997-10-09 2000-11-07 Broadcom Corporation Variable rate modulator
JP3323124B2 (ja) * 1998-01-09 2002-09-09 富士通株式会社 変調方法及び装置
US6268818B1 (en) 1998-06-24 2001-07-31 Conexant Systems, Inc. Method and apparatus for improving modulation accuracy
JP3575992B2 (ja) * 1998-07-17 2004-10-13 富士通株式会社 ディジタル変調装置
US6321075B1 (en) * 1998-07-30 2001-11-20 Qualcomm Incorporated Hardware-efficient transceiver with delta-sigma digital-to-analog converter
US7515896B1 (en) 1998-10-21 2009-04-07 Parkervision, Inc. Method and system for down-converting an electromagnetic signal, and transforms for same, and aperture relationships
US6061551A (en) 1998-10-21 2000-05-09 Parkervision, Inc. Method and system for down-converting electromagnetic signals
US6694128B1 (en) 1998-08-18 2004-02-17 Parkervision, Inc. Frequency synthesizer using universal frequency translation technology
US6091940A (en) 1998-10-21 2000-07-18 Parkervision, Inc. Method and system for frequency up-conversion
CN1131650C (zh) * 1998-09-07 2003-12-17 Lg情报通信株式会社 无线通信系统基站发射机的增频变频器及其输出控制方法
US6061555A (en) 1998-10-21 2000-05-09 Parkervision, Inc. Method and system for ensuring reception of a communications signal
US6542722B1 (en) 1998-10-21 2003-04-01 Parkervision, Inc. Method and system for frequency up-conversion with variety of transmitter configurations
US6370371B1 (en) 1998-10-21 2002-04-09 Parkervision, Inc. Applications of universal frequency translation
US6813485B2 (en) 1998-10-21 2004-11-02 Parkervision, Inc. Method and system for down-converting and up-converting an electromagnetic signal, and transforms for same
US7039372B1 (en) 1998-10-21 2006-05-02 Parkervision, Inc. Method and system for frequency up-conversion with modulation embodiments
US7236754B2 (en) 1999-08-23 2007-06-26 Parkervision, Inc. Method and system for frequency up-conversion
US6560301B1 (en) 1998-10-21 2003-05-06 Parkervision, Inc. Integrated frequency translation and selectivity with a variety of filter embodiments
US6879817B1 (en) 1999-04-16 2005-04-12 Parkervision, Inc. DC offset, re-radiation, and I/Q solutions using universal frequency translation technology
US6853690B1 (en) 1999-04-16 2005-02-08 Parkervision, Inc. Method, system and apparatus for balanced frequency up-conversion of a baseband signal and 4-phase receiver and transceiver embodiments
US7110444B1 (en) 1999-08-04 2006-09-19 Parkervision, Inc. Wireless local area network (WLAN) using universal frequency translation technology including multi-phase embodiments and circuit implementations
US7065162B1 (en) 1999-04-16 2006-06-20 Parkervision, Inc. Method and system for down-converting an electromagnetic signal, and transforms for same
US7693230B2 (en) 1999-04-16 2010-04-06 Parkervision, Inc. Apparatus and method of differential IQ frequency up-conversion
US8295406B1 (en) 1999-08-04 2012-10-23 Parkervision, Inc. Universal platform module for a plurality of communication protocols
US6317167B1 (en) * 1999-08-24 2001-11-13 Thomson Licensing S.A. Sine x/x compensation circuitry merged with a digital modulator
US7058037B1 (en) * 1999-09-13 2006-06-06 Utstarcom, Inc. Radio frequency transmitting device of mobile radio communication base station system in code division multiple access system
IT1313298B1 (it) * 1999-09-28 2002-07-17 Italtel Spa Metodo di calcolo dei coefficienti di un filtro fir che integra lefunzioni di interpolazione, di passa banda, e di equalizzazione della
WO2001026214A2 (en) * 1999-10-07 2001-04-12 Parkervision, Inc. Frequency converter and method
US6634555B1 (en) 2000-01-24 2003-10-21 Parker Vision, Inc. Bar code scanner using universal frequency translation technology for up-conversion and down-conversion
AU2001255803A1 (en) * 2000-03-02 2001-09-12 Adc Telecommunications Inc. Architecture for intermediate frequency decoder
US6741650B1 (en) 2000-03-02 2004-05-25 Adc Telecommunications, Inc. Architecture for intermediate frequency encoder
US7010286B2 (en) 2000-04-14 2006-03-07 Parkervision, Inc. Apparatus, system, and method for down-converting and up-converting electromagnetic signals
US7454453B2 (en) 2000-11-14 2008-11-18 Parkervision, Inc. Methods, systems, and computer program products for parallel correlation and applications thereof
US6944238B2 (en) * 2001-02-16 2005-09-13 Lucent Technologies Inc. Digital transmitter system and method
KR100421001B1 (ko) * 2001-02-20 2004-03-03 삼성전자주식회사 샘플링 레이트 변환 장치 및 방법
KR100446540B1 (ko) * 2001-04-16 2004-09-01 삼성전자주식회사 데이터 통신용 송신기
US20030003891A1 (en) * 2001-07-02 2003-01-02 Nokia Corporation Method to improve I/Q-amplitude balance and receiver quadrature channel performance
WO2003017508A1 (en) * 2001-08-20 2003-02-27 Qualcomm Incorporated Transmitter system and method for a wireless communication system
US7072427B2 (en) 2001-11-09 2006-07-04 Parkervision, Inc. Method and apparatus for reducing DC offsets in a communication system
US7295599B1 (en) * 2001-12-04 2007-11-13 Ellipsis Digital Systems, Inc. Digital conversion and compensation system
US7167528B2 (en) 2002-06-11 2007-01-23 General Instrument Corporation Modulation system for modulating data onto a carrier signal with offsets to compensate for doppler effect and allow a frequency synthesizing system to make steps equal to channel bandwidth
US7379883B2 (en) 2002-07-18 2008-05-27 Parkervision, Inc. Networking methods and systems
US7460584B2 (en) 2002-07-18 2008-12-02 Parkervision, Inc. Networking methods and systems
EP1665533B1 (en) * 2003-09-25 2008-08-20 THOMSON Licensing Digital rf transceiver with multiple imaging modes
US7515647B2 (en) * 2003-11-28 2009-04-07 Samsung Electronics Co., Ltd Digital frequency converter
JP4371830B2 (ja) * 2004-01-27 2009-11-25 富士通株式会社 歪補償増幅装置および基地局
WO2006006128A1 (en) * 2004-07-08 2006-01-19 Philips Intellectual Property & Standards Gmbh Method of converting a digital bb (baseband) signal into an analog if (intermediate-frequency) signal
CN101040437B (zh) 2004-10-13 2010-05-12 联发科技股份有限公司 用于通信系统的滤波器以及滤波方法
WO2006137007A1 (en) * 2005-06-24 2006-12-28 Koninklijke Philips Electronics N.V. Transmitter in wireless communication system
KR100795559B1 (ko) * 2005-12-09 2008-01-21 한국전자통신연구원 직교 주파수 분할 다중화 방식의 무선 시스템에서 고주파왜곡 현상의 보상 장치 및 방법
JP2007324659A (ja) * 2006-05-30 2007-12-13 Sony Corp チャージドメインフィルタ回路
EP1962438A1 (en) * 2007-02-22 2008-08-27 Sony Deutschland GmbH Method of transmitting data and modem
US20080240284A1 (en) * 2007-03-30 2008-10-02 Optimal Licensing Corporation System and method for digital modulation
US8750414B2 (en) * 2007-07-31 2014-06-10 Broadcom Corporation Method and system for polar modulation with discontinuous phase
US8553807B2 (en) * 2008-10-20 2013-10-08 Apple Inc. Methods and systems for programmable digital up-conversion
CN102025327B (zh) * 2009-09-18 2013-01-02 富士通株式会社 放大器装置和预失真控制方法
CN102064769B (zh) * 2010-11-02 2013-02-06 新邮通信设备有限公司 数字上变频器和数字下变频器
US10284356B2 (en) * 2011-02-03 2019-05-07 The Board Of Trustees Of The Leland Stanford Junior University Self-interference cancellation
US9331737B2 (en) * 2012-02-08 2016-05-03 The Board Of Trustees Of The Leland Stanford Junior University Systems and methods for cancelling interference using multiple attenuation delays
US10230419B2 (en) 2011-02-03 2019-03-12 The Board Of Trustees Of The Leland Stanford Junior University Adaptive techniques for full duplex communications
US10243719B2 (en) 2011-11-09 2019-03-26 The Board Of Trustees Of The Leland Stanford Junior University Self-interference cancellation for MIMO radios
WO2013097354A1 (zh) * 2011-12-30 2013-07-04 中兴通讯股份有限公司 功率放大器的保护电路和保护方法
US9325432B2 (en) 2012-02-08 2016-04-26 The Board Of Trustees Of The Leland Stanford Junior University Systems and methods for full-duplex signal shaping
US8502720B1 (en) 2012-04-03 2013-08-06 Telefonaktiebolaget L M Ericsson Parallel digital to analog conversion with image suppression
WO2013185106A1 (en) * 2012-06-08 2013-12-12 The Board Of Trustees Of The Leland Stanford Junior University Systems and methods for cancelling interference using multiple attenuation delays
US11163050B2 (en) 2013-08-09 2021-11-02 The Board Of Trustees Of The Leland Stanford Junior University Backscatter estimation using progressive self interference cancellation
WO2015021463A2 (en) 2013-08-09 2015-02-12 Kumu Networks, Inc. Systems and methods for frequency independent analog selfinterference cancellation
CN105556860B (zh) 2013-08-09 2018-04-03 库姆网络公司 用于非线性数字自干扰消除的系统以及方法
US9698860B2 (en) 2013-08-09 2017-07-04 Kumu Networks, Inc. Systems and methods for self-interference canceller tuning
US9054795B2 (en) 2013-08-14 2015-06-09 Kumu Networks, Inc. Systems and methods for phase noise mitigation
US10673519B2 (en) 2013-08-29 2020-06-02 Kuma Networks, Inc. Optically enhanced self-interference cancellation
EP3039798A4 (en) 2013-08-29 2017-05-03 Kumu Networks, Inc. Full-duplex relays
US9520983B2 (en) 2013-09-11 2016-12-13 Kumu Networks, Inc. Systems for delay-matched analog self-interference cancellation
WO2015089460A1 (en) 2013-12-12 2015-06-18 Kumu Networks, Inc. Systems and methods for hybrid self-interference cancellation
US9774405B2 (en) 2013-12-12 2017-09-26 Kumu Networks, Inc. Systems and methods for frequency-isolated self-interference cancellation
US10230422B2 (en) 2013-12-12 2019-03-12 Kumu Networks, Inc. Systems and methods for modified frequency-isolation self-interference cancellation
US9712312B2 (en) 2014-03-26 2017-07-18 Kumu Networks, Inc. Systems and methods for near band interference cancellation
US11209536B2 (en) 2014-05-02 2021-12-28 The Board Of Trustees Of The Leland Stanford Junior University Method and apparatus for tracking motion using radio frequency signals
WO2015179874A1 (en) 2014-05-23 2015-11-26 Kumu Networks, Inc. Systems and methods for multi-rate digital self-interference cancellation
US9521023B2 (en) 2014-10-17 2016-12-13 Kumu Networks, Inc. Systems for analog phase shifting
US9712313B2 (en) 2014-11-03 2017-07-18 Kumu Networks, Inc. Systems for multi-peak-filter-based analog self-interference cancellation
US9673854B2 (en) 2015-01-29 2017-06-06 Kumu Networks, Inc. Method for pilot signal based self-inteference cancellation tuning
US9634823B1 (en) 2015-10-13 2017-04-25 Kumu Networks, Inc. Systems for integrated self-interference cancellation
US10666305B2 (en) 2015-12-16 2020-05-26 Kumu Networks, Inc. Systems and methods for linearized-mixer out-of-band interference mitigation
US9742593B2 (en) 2015-12-16 2017-08-22 Kumu Networks, Inc. Systems and methods for adaptively-tuned digital self-interference cancellation
US9800275B2 (en) 2015-12-16 2017-10-24 Kumu Networks, Inc. Systems and methods for out-of band-interference mitigation
CN108370082B (zh) 2015-12-16 2021-01-08 库姆网络公司 时延滤波器
US10454444B2 (en) 2016-04-25 2019-10-22 Kumu Networks, Inc. Integrated delay modules
WO2017189592A1 (en) 2016-04-25 2017-11-02 Kumu Networks, Inc. Integrated delay modules
US10338205B2 (en) 2016-08-12 2019-07-02 The Board Of Trustees Of The Leland Stanford Junior University Backscatter communication among commodity WiFi radios
US11483836B2 (en) 2016-10-25 2022-10-25 The Board Of Trustees Of The Leland Stanford Junior University Backscattering ambient ism band signals
WO2018183384A1 (en) 2017-03-27 2018-10-04 Kumu Networks, Inc. Systems and methods for intelligently-tunded digital self-interference cancellation
CN110463033B (zh) 2017-03-27 2023-09-29 库姆网络公司 增强型线性混频器
CN110463047B (zh) 2017-03-27 2021-08-27 库姆网络公司 用于可调谐带外干扰抑制的系统和方法
US10200076B1 (en) 2017-08-01 2019-02-05 Kumu Networks, Inc. Analog self-interference cancellation systems for CMTS
CN111771345B (zh) 2018-02-27 2021-08-31 库姆网络公司 用于可配置混合自干扰消除的系统和方法
US10868661B2 (en) 2019-03-14 2020-12-15 Kumu Networks, Inc. Systems and methods for efficiently-transformed digital self-interference cancellation

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4244047A (en) * 1979-03-20 1981-01-06 Rockwell International Corporation Multiplexed carrier transmission through harmonic polluted medium
US4855894A (en) * 1987-05-25 1989-08-08 Kabushiki Kaisha Kenwood Frequency converting apparatus
SE459774B (sv) * 1987-11-27 1989-07-31 Ericsson Telefon Ab L M Anordning foer kompensering av fel upptraednnde i e n kvadraturmodulator
GB2214374A (en) * 1988-01-06 1989-08-31 Philips Electronic Associated Ssb signal generator
DE3839919A1 (de) * 1988-11-26 1990-06-07 Ant Nachrichtentech Digitaler modemsender mit quadratur-amplitudenmodulation
FR2642243B1 (fr) * 1989-01-24 1991-04-19 Labo Electronique Physique Circuit de predistorsion adaptative
US5042085A (en) * 1989-05-12 1991-08-20 Motorola, Inc. Radio frequency data communication band pass filter
US5202900A (en) * 1989-08-07 1993-04-13 Motorola, Inc. Spectrally efficient digital FM modulated transmitter
US5077757A (en) * 1990-07-30 1991-12-31 Motorola, Inc. System for synthesizing a modulated signal
US5249200A (en) * 1991-07-30 1993-09-28 Codex Corporation Device and method for combining precoding with symbol-rate spectral shaping
US5220557A (en) * 1991-09-23 1993-06-15 Hughes Aircraft Company Multiple use digital transmitter/transceiver with time multiplexing
JP2883260B2 (ja) * 1993-04-20 1999-04-19 三菱電機株式会社 歪補償回路
US5351016A (en) * 1993-05-28 1994-09-27 Ericsson Ge Mobile Communications Inc. Adaptively self-correcting modulation system and method
US5446423A (en) * 1994-09-19 1995-08-29 Motorola, Inc. Digital single sideband modulator and method

Also Published As

Publication number Publication date
JPH1075272A (ja) 1998-03-17
EP0817369A3 (en) 1998-06-10
US5930301A (en) 1999-07-27
EP0817369A2 (en) 1998-01-07
CN1174450A (zh) 1998-02-25

Similar Documents

Publication Publication Date Title
TW346704B (en) Direct up-conversion of digital communications signals into analog if output signals by means of pre-distortion filter and frequency replica-selecting bandpass filter
US5748678A (en) Radio communications apparatus
US6600516B1 (en) Digital RF transmitter system employing both digital pre-correction and analog pre-correction
US9166840B2 (en) Method of transmitting data samples with reduced bandwidth
CA2045211A1 (en) Method for regulating power in a digital mobile telephony system
AU1749201A (en) Method and apparatus for generating a radio frequency signal
CA2179979A1 (en) Method and apparatus for multiuser-interference reduction
EP0748092A3 (en) Modulation method and modulator for digital signal
CA2205244A1 (en) Hybrid fiber-coax system having at least one digital fiber node and increased upstream and downstream bandwidth
KR100548763B1 (ko) 피드포워드 방식의 선형화기를 갖는 기지국 송신장치
EP0845880A3 (en) Optical transmission device and system
EP0766494B1 (en) Digital microphonic device
GB2283629A (en) Splatter-reduced training for adaptive pre-distortion or cartesian feedback linearizers
MY104248A (en) Technique for actv side-panel noise reduction
CA2465014A1 (en) Modulation apparatus for reducing time delay of on-channel repeater in terrestrial digital tv broadcasting system
CA2369227A1 (en) Digital transmitter system and method
US8971828B2 (en) Predistortion device, method for predistortion, and transmitter/receiver system that reuse an analog receiving circuit in a half duplexing system and a full duplexing system, and that reduce the requirement on the analog receiving circuit
MXPA04001572A (es) Sistema transmisor t metodo para un sistema de comunicacion inalambrico.
US8259839B2 (en) Method for avoiding interference radiation of AM transmitters used in digital transmission
KR100404385B1 (ko) Dsp를 이용한 무선통신 시스템의 신호처리 방법 및 장치
KR101168015B1 (ko) Ｉｓｓ 필터 모듈을 응용한 유무선통신장치
KR20040054196A (ko) 다중 채널 디지털 트랜시버의 출력 자동 보상 장치
KR100282805B1 (ko) 무선가입자망 시스템의 아이 및 큐 기저대역 신호변조시 캐리어 억압회로
JPS54112110A (en) Communication equipment
AU2002218599A1 (en) Pre-distortion of non-linear devices by post-detection