BR9906790A - Modular e demodulador de quadratura - Google Patents

Modular e demodulador de quadratura

Info

Publication number
BR9906790A
BR9906790A BR9906790-0A BR9906790A BR9906790A BR 9906790 A BR9906790 A BR 9906790A BR 9906790 A BR9906790 A BR 9906790A BR 9906790 A BR9906790 A BR 9906790A
Authority
BR
Brazil
Prior art keywords
quadrature
mixers
pair
signals
demodulator
Prior art date
Application number
BR9906790-0A
Other languages
English (en)
Inventor
Ralph E Kaufman
Vladimir Aparin
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 BR9906790A publication Critical patent/BR9906790A/pt

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
    • H03D3/007—Demodulation of angle-, frequency- or phase- modulated oscillations by converting the oscillations into two quadrature related signals
    • 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
    • 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
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/20—Modulator circuits; Transmitter circuits
    • H04L27/2032—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner
    • H04L27/2053—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases
    • H04L27/206—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases using a pair of orthogonal carriers, e.g. quadrature carriers
    • H04L27/2067—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases using a pair of orthogonal carriers, e.g. quadrature carriers with more than two phase states
    • H04L27/2071—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases using a pair of orthogonal carriers, e.g. quadrature carriers with more than two phase states in which the data are represented by the carrier phase, e.g. systems with differential coding
    • 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
    • H04L27/362—Modulation using more than one carrier, e.g. with quadrature carriers, separately amplitude modulated
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D2200/00—Indexing scheme relating to details of demodulation or transference of modulation from one carrier to another covered by H03D
    • H03D2200/0041—Functional aspects of demodulators
    • H03D2200/0082—Quadrature arrangements
    • 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

Landscapes

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

Abstract

Patente de Invenção: MODULADOR E DEMODULADOR DE QUADRATURA. Um modulador (210) e demodulador (310) de quadratura que propiciam o nível necessário de desempenho, concomitantemente minimizando o consumo de energia. No modulador de quadratura (210), os sinais I e Q são providos a dois pares de misturadores. Cada misturador em um par de misturadores modula um sinal I ou Q com a respectiva senoíde IF em fase ou em quadratura. Os sinais I e Q modulados provenientes de cada par de misturadores são somados. Os sinais provenientes dos somadores são providos a um terceiro par de misturadores e modulados com as respectivas senóides de RF em fase e em quadratura. Os sinais provenientes do terceiro par de misturadores são somados e providos na forma do sinal modulado. Pelo uso de tal topologia de modulador de quadratura (210) o equilíbrio de amplitude e erro de fase do sinal modulado são tornados insensíveis ao desequilibrio de amplitude e/ou erro de fase dos divisores de quadratura usados para gerar as senóides de IF e RF. Além disso, uma vez que os primeiros dois pares de misturadores e os dois somadores subsequentes são operados no freq³ência IF, as exigências de desempenho (por exemplo, amplitude de banda e linearidade) de tais componentes podem ser asseguradas, utilizando-se concomitantemente menos energia. O conceito da invenção pode ser adicionalmente adotado para uso em um demodulador de quadratura (310).
BR9906790-0A 1998-01-07 1999-01-06 Modular e demodulador de quadratura BR9906790A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/004,175 US6240142B1 (en) 1998-01-07 1998-01-07 Quadrature modulator and demodulator
PCT/US1999/000251 WO1999035736A1 (en) 1998-01-07 1999-01-06 Quadrature modulator and demodulator

Publications (1)

Publication Number Publication Date
BR9906790A true BR9906790A (pt) 2000-10-31

Family

ID=21709536

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9906790-0A BR9906790A (pt) 1998-01-07 1999-01-06 Modular e demodulador de quadratura

Country Status (11)

Country Link
US (1) US6240142B1 (pt)
EP (1) EP1046223A1 (pt)
JP (1) JP2002501316A (pt)
KR (1) KR100609944B1 (pt)
CN (1) CN1288607A (pt)
AU (1) AU760605B2 (pt)
BR (1) BR9906790A (pt)
CA (1) CA2316969A1 (pt)
ID (1) ID26491A (pt)
RU (1) RU2216874C2 (pt)
WO (1) WO1999035736A1 (pt)

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US6240081B1 (en) * 1998-01-15 2001-05-29 Denso Corporation Multicode CDMA transmitter with improved signal processing
CA2281236C (en) 1999-09-01 2010-02-09 Tajinder Manku Direct conversion rf schemes using a virtually generated local oscillator
US7130579B1 (en) * 1999-10-21 2006-10-31 Broadcom Corporation Adaptive radio transceiver with a wide tuning range VCO
US7113744B1 (en) * 1999-10-21 2006-09-26 Broadcom Corporation Adaptive radio transceiver with a power amplifier
US7558556B1 (en) * 1999-10-21 2009-07-07 Broadcom Corporation Adaptive radio transceiver with subsampling mixers
AU1576701A (en) * 1999-10-29 2001-05-14 Qualcomm Incorporated System and method for increasing feeder link capacity in a satellite communications system
JP4366847B2 (ja) * 2000-08-22 2009-11-18 ソニー株式会社 半導体装置および携帯端末装置
ATE493820T1 (de) * 2000-11-03 2011-01-15 Qualcomm Inc Modulator mit geringer anfälligkeit für amplituden- und phasenfehler des trägersignals
US7095801B1 (en) * 2001-03-30 2006-08-22 Skyworks Solutions, Inc. Phase adjustable polyphase filters
US7136425B2 (en) * 2001-05-31 2006-11-14 Intel Corporation Combining frequency multiplication and modulation
US6728527B2 (en) * 2001-07-10 2004-04-27 Asulab S.A. Double up-conversion modulator
DE10142249A1 (de) * 2001-08-29 2003-04-03 Infineon Technologies Ag Schaltungsanordnung zum Bereitstellen eines komplexwertigen Lokalozillator-Signals und Empfänger
US6621366B1 (en) * 2001-12-07 2003-09-16 Analog Devices, Inc. Parallel-process digital modulator structures and methods
TW595174B (en) * 2002-08-28 2004-06-21 Novatek Microelectronics Corp Signal frequency splitter and frequency shift key decoding apparatus using the same
AU2003260864A1 (en) * 2002-10-11 2004-05-04 Koninklijke Philips Electronics N.V. Multi carrier qam modulator with direct up-conversion
KR100457175B1 (ko) * 2002-12-14 2004-11-16 한국전자통신연구원 직교 변조 송신기
EP1432195A1 (en) * 2002-12-17 2004-06-23 Telefonaktiebolaget LM Ericsson (publ) Method and apparatus for quadrature modulation
AU2003290052A1 (en) * 2002-12-17 2004-07-09 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for quadrature modulation technical field
US6816008B2 (en) * 2002-12-31 2004-11-09 Alion Science And Technology Corporation Quasi-linear multi-state digital modulation through non-linear amplifier arrays
EP1499030A3 (en) * 2003-07-14 2006-02-08 Samsung Electronics Co., Ltd. Wideband quadrature generation technique requiring only narrowband components and method thereof
US7298793B2 (en) * 2003-08-21 2007-11-20 Mediatek Inc. Method and apparatus for I/Q mismatch calibration of transmitter
KR100732885B1 (ko) * 2004-12-31 2007-06-27 에스케이텔레시스 주식회사 갭 필러의 위상 잡음 감소장치
JP2006295761A (ja) * 2005-04-14 2006-10-26 Mitsubishi Electric Corp 無線基地局
US7529300B2 (en) * 2005-07-26 2009-05-05 Cubic Corporation Shaped-offset quadrature amplitude modulation methods and apparatus
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RU2350031C1 (ru) * 2007-07-04 2009-03-20 Игорь Борисович Дунаев Способ передачи и приема сигналов квадратурной амплитудной модуляции, система для его осуществления, машиночитаемый носитель и применение способа для синхронизации приема сигналов квадратурной амплитудной модуляции
US7495484B1 (en) * 2007-07-30 2009-02-24 General Instrument Corporation Programmable frequency multiplier
US20090080502A1 (en) * 2007-09-24 2009-03-26 Ahmadreza Rofougaran Method and system for distributed transceivers based on rf quadrature and lo quadrature filtering for high frequency applications
KR100960022B1 (ko) * 2008-08-22 2010-05-28 전자부품연구원 디지털 중간주파수 무선송신기, 고주파 변조 장치 및 방법
JP5310380B2 (ja) * 2009-08-24 2013-10-09 富士通セミコンダクター株式会社 直交変復調回路
FR2997594B1 (fr) * 2012-10-30 2015-11-20 Sagem Defense Securite Procede de demodulation de signaux modules gfsk sur q etats
RU2524673C1 (ru) * 2013-03-07 2014-08-10 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Иркутский государственный технический университет" (ФГБОУ ВПО "ИрГТУ") Способ измерения вариаций фазового сдвига центральной частоты сигналов с минимальной частотной манипуляцией и устройство для его осуществления
US9680454B2 (en) * 2014-10-28 2017-06-13 Mediatek Inc. Frequency tripler and local oscillator generator
RU2579951C1 (ru) * 2015-01-12 2016-04-10 Федеральное государственное казенное военное образовательное учреждение высшего профессионального образования "Военная академия связи имени Маршала Советского Союза С.М. Буденного" Министерства Обороны Российской Федерации (Минобороны России) Способ формирования сигналов четырехпозиционной квадратурной манипуляции
WO2017062386A1 (en) * 2015-10-04 2017-04-13 Jianxun Zhu Circuits for wireless communication on multiple frequency bands
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Also Published As

Publication number Publication date
US6240142B1 (en) 2001-05-29
AU760605B2 (en) 2003-05-15
RU2216874C2 (ru) 2003-11-20
ID26491A (id) 2001-01-11
AU2028299A (en) 1999-07-26
JP2002501316A (ja) 2002-01-15
CA2316969A1 (en) 1999-07-15
CN1288607A (zh) 2001-03-21
EP1046223A1 (en) 2000-10-25
KR20010033953A (ko) 2001-04-25
WO1999035736A1 (en) 1999-07-15
KR100609944B1 (ko) 2006-08-04

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Legal Events

Date Code Title Description
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE A 7A, 8A E 9A ANUIDADES.

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: REFERENTE AO DESPACHO PUBLICADO NA RPI 1962 DE 12/08/2008.