BR9909818A - Aparelho para recebimento de um sinal de rf, processo de redução de distorção, aparelho para redução de emissões espúrias de um receptor, e, processo para a redução de emissões espúrias de um receptor - Google Patents

Aparelho para recebimento de um sinal de rf, processo de redução de distorção, aparelho para redução de emissões espúrias de um receptor, e, processo para a redução de emissões espúrias de um receptor

Info

Publication number
BR9909818A
BR9909818A BR9909818-0A BR9909818A BR9909818A BR 9909818 A BR9909818 A BR 9909818A BR 9909818 A BR9909818 A BR 9909818A BR 9909818 A BR9909818 A BR 9909818A
Authority
BR
Brazil
Prior art keywords
signal
receiver
phase
switchable
output
Prior art date
Application number
BR9909818-0A
Other languages
English (en)
Inventor
Domenico Arpaia
Charles Gore
Original Assignee
Ericsson 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 Ericsson Inc filed Critical Ericsson Inc
Publication of BR9909818A publication Critical patent/BR9909818A/pt

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D1/00—Demodulation of amplitude-modulated oscillations
    • H03D1/22—Homodyne or synchrodyne circuits
    • H03D1/2245—Homodyne or synchrodyne circuits using two quadrature channels
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D1/00—Demodulation of amplitude-modulated oscillations
    • H03D1/22—Homodyne or synchrodyne 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

Abstract

"APARELHO PARA RECEBIMENTO DE UM SINAL DE RF, PROCESSO DE REDUçãO DE DISTORçãO, APARELHO PARA REDUçãO DE EMISSõES ESPúRIAS DE UM RECEPTOR, E, PROCESSO PARA A REDUçãO DE EMISSõES ESPúRIAS DE UM RECEPTOR" Um receptor homódino de acordo com a presente invenção inclui uma entrada de sinal e segundos mixadores acoplados à entrada de sinal. Um oscilador local proporciona um sinal de referência na freq³ência de modulação do sinal de entrada. A saída do sinal de referência pelo oscilador local é passada através de um elemento de mudança de fase comutável, a saída do qual é acoplado diretamente ao primeiro mixador e indiretamente ao segundo mixador através de um segundo elemento de mudança de fase. O elemento de mudança de fase comutável muda a fase de um sinal de entrada por uma fase predeterminada com base no estado de uma entrada de controle, de modo que a saída do elemento de mudança de fase em um estado está <227> radianos fora de fase com a saída do elemento de mudança de fase no outro estado. O segundo elemento de mudança de fase muda a fase de um sinal de entrada por <277>/2 radianos. As saídas dos mixadores são acopladas a um par de inversores comutáveis e filtros passa baixo. A comutação do elemento de mudança de fase comutável e dos inversores comutáveis é controlada por um oscilador de comutação.
BR9909818-0A 1998-04-22 1999-04-20 Aparelho para recebimento de um sinal de rf, processo de redução de distorção, aparelho para redução de emissões espúrias de um receptor, e, processo para a redução de emissões espúrias de um receptor BR9909818A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/064,930 US6192225B1 (en) 1998-04-22 1998-04-22 Direct conversion receiver
PCT/US1999/008659 WO1999055015A1 (en) 1998-04-22 1999-04-20 Direct conversion receiver

Publications (1)

Publication Number Publication Date
BR9909818A true BR9909818A (pt) 2000-12-19

Family

ID=22059199

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9909818-0A BR9909818A (pt) 1998-04-22 1999-04-20 Aparelho para recebimento de um sinal de rf, processo de redução de distorção, aparelho para redução de emissões espúrias de um receptor, e, processo para a redução de emissões espúrias de um receptor

Country Status (12)

Country Link
US (1) US6192225B1 (pt)
EP (2) EP1074093A1 (pt)
JP (2) JP2002512471A (pt)
KR (1) KR100665463B1 (pt)
CN (2) CN1254924C (pt)
AU (1) AU755670B2 (pt)
BR (1) BR9909818A (pt)
EE (1) EE200000609A (pt)
HK (1) HK1039223B (pt)
IL (1) IL139157A0 (pt)
MY (1) MY123208A (pt)
WO (1) WO1999055015A1 (pt)

Families Citing this family (92)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6061551A (en) * 1998-10-21 2000-05-09 Parkervision, Inc. Method and system for down-converting electromagnetic signals
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
US6370371B1 (en) 1998-10-21 2002-04-09 Parkervision, Inc. Applications of universal frequency translation
US7236754B2 (en) 1999-08-23 2007-06-26 Parkervision, Inc. Method and system for frequency up-conversion
US7039372B1 (en) 1998-10-21 2006-05-02 Parkervision, Inc. Method and system for frequency up-conversion with modulation embodiments
DE69829757T2 (de) 1998-12-18 2006-01-12 Sony International (Europe) Gmbh Drei-Tor-Schaltung Empfänger
US6397051B1 (en) * 1998-12-21 2002-05-28 At&T Corporation Dual image-reject mixer receiver for multiple channel reception and processing
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
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
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
EP1201029B1 (en) * 1999-05-24 2003-04-02 Level One Communications, Inc Automatic gain control and offset correction
US8295406B1 (en) 1999-08-04 2012-10-23 Parkervision, Inc. Universal platform module for a plurality of communication protocols
US6574462B1 (en) * 1999-08-25 2003-06-03 Analog Devices, Inc. Local oscillator apparatus for radio frequency communication systems
CA2281236C (en) 1999-09-01 2010-02-09 Tajinder Manku Direct conversion rf schemes using a virtually generated local oscillator
US7010286B2 (en) 2000-04-14 2006-03-07 Parkervision, Inc. Apparatus, system, and method for down-converting and up-converting electromagnetic signals
US6675004B1 (en) * 2000-08-25 2004-01-06 Interwave Communications International Ltd. Method and apparatus for receive channel noise suppression
JP2002076976A (ja) * 2000-08-28 2002-03-15 Matsushita Electric Ind Co Ltd ダイレクトコンバージョン受信装置
US7454453B2 (en) 2000-11-14 2008-11-18 Parkervision, Inc. Methods, systems, and computer program products for parallel correlation and applications thereof
US6711397B1 (en) * 2000-11-20 2004-03-23 Ami Semiconductor, Inc. Structures and methods for direct conversion from radio frequency modulated signals to baseband signals
JP3772089B2 (ja) * 2000-12-18 2006-05-10 松下電器産業株式会社 位相オフセット演算回路および信号点マッピング回路
US6907235B2 (en) * 2001-01-02 2005-06-14 Texas Instruments Incorporated Apparatus and method for canceling DC offset in communications signals
US6766157B1 (en) * 2001-01-03 2004-07-20 Kyocera Wireless Corp. Reducing LO leakage in a direct conversion receiver quadrature stage
US7076225B2 (en) * 2001-02-16 2006-07-11 Qualcomm Incorporated Variable gain selection in direct conversion receiver
US7072427B2 (en) 2001-11-09 2006-07-04 Parkervision, Inc. Method and apparatus for reducing DC offsets in a communication system
US7469136B2 (en) * 2001-11-30 2008-12-23 Motorola, Inc. RF receivers and methods therefor
US7356326B2 (en) * 2001-12-12 2008-04-08 Samsung Electronics Co., Ltd. Direct-conversion receiver for removing DC offset
US6959170B2 (en) * 2001-12-20 2005-10-25 Motorola, Inc. Communications receivers and methods therefor
US6801761B2 (en) * 2002-02-15 2004-10-05 Broadcom Corp. Programmable mixer and radio applications thereof
JP2003298442A (ja) * 2002-03-29 2003-10-17 Communication Research Laboratory 無線通信方法及びシステム
US6882834B1 (en) 2002-04-26 2005-04-19 Analog Devices, Inc. Direct conversion receiver apparatus
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
JP2004072515A (ja) * 2002-08-07 2004-03-04 Alps Electric Co Ltd 直接変換回路
WO2004049582A1 (en) * 2002-11-27 2004-06-10 Koninklijke Philips Electronics N.V. Receiver for processing a received signal
US7031688B2 (en) * 2003-03-24 2006-04-18 Quorum Systems, Inc. Direct-conversion receiver system and method with quadrature balancing and DC offset removal
US7031672B2 (en) * 2003-03-24 2006-04-18 Quorum Systems, Inc. Direct conversion transmitter system and method with quadrature balancing and low LO feed through
US20060154625A1 (en) * 2003-03-31 2006-07-13 Quorum Systems, Inc. Direct conversion transmitter system and method with quadrature balancing and low lo feed through
GB0308962D0 (en) * 2003-04-17 2003-05-28 Nokia Corp A mixer arrangement
KR100539978B1 (ko) * 2003-04-28 2006-01-10 삼성전자주식회사 주파수 혼합 회로 및 방법과 고주파 수신회로 및 방법
US7139546B1 (en) * 2003-04-29 2006-11-21 Ami Semiconductor, Inc. Up-conversion of a down-converted baseband signal in a direct conversion architecture without the baseband signal passing through active elements
US7113760B1 (en) 2003-04-29 2006-09-26 Ami Semiconductor, Inc. Direct conversion receiver for amplitude modulated signals using linear/log filtering
US7006809B2 (en) * 2003-05-06 2006-02-28 Ami Semiconductor, Inc. Adaptive diversity receiver architecture
US7197091B1 (en) 2003-05-06 2007-03-27 Ami Semiconductor, Inc. Direct conversion receiver with direct current offset correction circuitry
DE10360470B4 (de) * 2003-12-22 2010-11-18 Infineon Technologies Ag Verfahren und Vorrichtung zum Demodulieren eines Empfangssignals
US20050191986A1 (en) * 2004-02-27 2005-09-01 Lin Hung C. FM detector for direct-conversion receiver
US7327802B2 (en) * 2004-03-19 2008-02-05 Sirit Technologies Inc. Method and apparatus for canceling the transmitted signal in a homodyne duplex transceiver
US7508451B2 (en) * 2004-04-30 2009-03-24 Telegent Systems, Inc. Phase-noise mitigation in an integrated analog video receiver
EP2075908A3 (en) * 2004-04-30 2009-07-22 Telegent Systems, Inc. integrated analog video receiver
KR100595272B1 (ko) * 2005-02-15 2006-07-03 엘지전자 주식회사 호모다인 수신 장치 및 이를 이용한 신호 수신 방법
TWI292255B (en) * 2005-08-12 2008-01-01 Via Tech Inc Mixer for homodyne rf receiver
US7904050B2 (en) * 2005-12-13 2011-03-08 General Instrument Corporation Mixer apparatus having switchable local oscillator inputs
WO2007127948A2 (en) 2006-04-27 2007-11-08 Sirit Technologies Inc. Adjusting parameters associated with leakage signals
US8248212B2 (en) 2007-05-24 2012-08-21 Sirit Inc. Pipelining processes in a RF reader
US8427316B2 (en) 2008-03-20 2013-04-23 3M Innovative Properties Company Detecting tampered with radio frequency identification tags
US8446256B2 (en) * 2008-05-19 2013-05-21 Sirit Technologies Inc. Multiplexing radio frequency signals
US8121241B2 (en) * 2008-09-29 2012-02-21 Motorola Solutions, Inc. Method and apparatus for processing radio frequency signals
DE102008050327A1 (de) * 2008-10-07 2010-05-27 Endress + Hauser Gmbh + Co. Kg Empfangsmischer zur Verringerung von Überkopplungseffekten
US7872514B2 (en) * 2008-12-20 2011-01-18 Motorola, Inc. Latch circuit and clock signal dividing circuit
US8169312B2 (en) * 2009-01-09 2012-05-01 Sirit Inc. Determining speeds of radio frequency tags
JP4758483B2 (ja) * 2009-01-15 2011-08-31 シャープ株式会社 電子装置
US9166471B1 (en) 2009-03-13 2015-10-20 Rf Micro Devices, Inc. 3D frequency dithering for DC-to-DC converters used in multi-mode cellular transmitters
US20100289623A1 (en) * 2009-05-13 2010-11-18 Roesner Bruce B Interrogating radio frequency identification (rfid) tags
US8416079B2 (en) * 2009-06-02 2013-04-09 3M Innovative Properties Company Switching radio frequency identification (RFID) tags
US8548398B2 (en) 2010-02-01 2013-10-01 Rf Micro Devices, Inc. Envelope power supply calibration of a multi-mode radio frequency power amplifier
US20110205025A1 (en) * 2010-02-23 2011-08-25 Sirit Technologies Inc. Converting between different radio frequencies
US8538355B2 (en) 2010-04-19 2013-09-17 Rf Micro Devices, Inc. Quadrature power amplifier architecture
US9214900B2 (en) 2010-04-20 2015-12-15 Rf Micro Devices, Inc. Interference reduction between RF communications bands
US8958763B2 (en) 2010-04-20 2015-02-17 Rf Micro Devices, Inc. PA bias power supply undershoot compensation
US9077405B2 (en) 2010-04-20 2015-07-07 Rf Micro Devices, Inc. High efficiency path based power amplifier circuitry
US9214865B2 (en) 2010-04-20 2015-12-15 Rf Micro Devices, Inc. Voltage compatible charge pump buck and buck power supplies
US9008597B2 (en) 2010-04-20 2015-04-14 Rf Micro Devices, Inc. Direct current (DC)-DC converter having a multi-stage output filter
US9030256B2 (en) 2010-04-20 2015-05-12 Rf Micro Devices, Inc. Overlay class F choke
US8983410B2 (en) 2010-04-20 2015-03-17 Rf Micro Devices, Inc. Configurable 2-wire/3-wire serial communications interface
US9553550B2 (en) 2010-04-20 2017-01-24 Qorvo Us, Inc. Multiband RF switch ground isolation
US8947157B2 (en) 2010-04-20 2015-02-03 Rf Micro Devices, Inc. Voltage multiplier charge pump buck
US8989685B2 (en) 2010-04-20 2015-03-24 Rf Micro Devices, Inc. Look-up table based configuration of multi-mode multi-band radio frequency power amplifier circuitry
US9048787B2 (en) 2010-04-20 2015-06-02 Rf Micro Devices, Inc. Combined RF detector and RF attenuator with concurrent outputs
US8942650B2 (en) 2010-04-20 2015-01-27 Rf Micro Devices, Inc. RF PA linearity requirements based converter operating mode selection
US9362825B2 (en) 2010-04-20 2016-06-07 Rf Micro Devices, Inc. Look-up table based configuration of a DC-DC converter
US9184701B2 (en) 2010-04-20 2015-11-10 Rf Micro Devices, Inc. Snubber for a direct current (DC)-DC converter
US9577590B2 (en) 2010-04-20 2017-02-21 Qorvo Us, Inc. Dual inductive element charge pump buck and buck power supplies
US8983407B2 (en) 2010-04-20 2015-03-17 Rf Micro Devices, Inc. Selectable PA bias temperature compensation circuitry
US9900204B2 (en) 2010-04-20 2018-02-20 Qorvo Us, Inc. Multiple functional equivalence digital communications interface
US8942651B2 (en) 2010-04-20 2015-01-27 Rf Micro Devices, Inc. Cascaded converged power amplifier
US9024815B2 (en) 2011-05-27 2015-05-05 Brooks Engineering International, Llc Direct-to-digital software-defined radar
CN102832957B (zh) * 2011-06-14 2014-12-17 瑞昱半导体股份有限公司 不连续频段信号的接收机、发射机及其接收和发射方法
CN103095321B (zh) * 2011-11-01 2017-05-10 瑞典爱立信有限公司 用于tdd系统中接收机校正的方法及相关的设备
KR101826036B1 (ko) 2011-11-07 2018-02-07 삼성전자주식회사 랜덤화된 제어 펄스를 이용하는 직류 오프셋 제거 장치 및 방법
US9065505B2 (en) * 2012-01-31 2015-06-23 Rf Micro Devices, Inc. Optimal switching frequency for envelope tracking power supply
US10062025B2 (en) 2012-03-09 2018-08-28 Neology, Inc. Switchable RFID tag

Family Cites Families (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2166311B (en) 1984-10-25 1988-07-27 Gen Electric Co Plc Receiving apparatus
US4646031A (en) * 1985-02-07 1987-02-24 Fast Raymond D Narrowband phase-lock loop circuit with automatic convergence
GB2177875A (en) 1985-07-08 1987-01-28 Philips Electronic Associated Radio transmission system
US4736390A (en) 1986-10-15 1988-04-05 Itt Avionics, A Division Of Itt Corporation Zero IF radio receiver apparatus
GB2215545A (en) 1988-03-16 1989-09-20 Philips Electronic Associated A direct-conversion receiver
DE3815055A1 (de) 1988-05-04 1989-11-16 Standard Elektrik Lorenz Ag Quadratur-empfaenger
US5095533A (en) 1990-03-23 1992-03-10 Rockwell International Corporation Automatic gain control system for a direct conversion receiver
US5095536A (en) 1990-03-23 1992-03-10 Rockwell International Corporation Direct conversion receiver with tri-phase architecture
US5179730A (en) 1990-03-23 1993-01-12 Rockwell International Corporation Selectivity system for a direct conversion receiver
GB9017418D0 (en) 1990-08-08 1990-09-19 Gen Electric Co Plc Half frequency mixer
US5230099A (en) 1991-01-24 1993-07-20 Rockwell International Corporation System for controlling phase and gain errors in an i/q direct conversion receiver
US5249203A (en) 1991-02-25 1993-09-28 Rockwell International Corporation Phase and gain error control system for use in an i/q direct conversion receiver
JP2861631B2 (ja) * 1992-05-06 1999-02-24 日本電気株式会社 Ｆｓｋ受信機
TW225067B (pt) 1992-11-26 1994-06-11 Philips Electronics Nv
US5396571A (en) * 1993-05-21 1995-03-07 Trimedyne, Inc. Coupling device and method for improved transfer efficiency of light energy from a laser source into optical fibers
US5493210A (en) * 1993-06-10 1996-02-20 Trilithic, Inc. Combined signal level meter and leakage detector
SE502599C2 (sv) 1993-09-09 1995-11-20 Ericsson Ge Mobile Communicat Sätt och anordning vid en homodynmottagare för att minimera läckage av störsignaler
GB2282030B (en) 1993-09-14 1997-09-24 Plessey Semiconductors Ltd Direct conversion receiver
FI103442B1 (fi) * 1993-09-24 1999-06-30 Nokia Telecommunications Oy Digitaalinen radiolinkkijärjestelmä ja radiolinkkilaite
ES2115260T3 (es) * 1993-10-11 1998-06-16 British Telecomm Dispositivo de conmutacion optico.
US5633898A (en) * 1993-12-22 1997-05-27 Matsushita Electric Industrial Co., Ltd. Automatic frequency control apparatus for FSK receiver and FSK receiver including the same
US5564097A (en) 1994-05-26 1996-10-08 Rockwell International Spread intermediate frequency radio receiver with adaptive spurious rejection
SE503069C2 (sv) * 1994-07-06 1996-03-18 Ericsson Telefon Ab L M Förfarande och anordning för att fasvrida en signal
US5507036A (en) 1994-09-30 1996-04-09 Rockwell International Apparatus with distortion cancelling feed forward signal
US5537305A (en) * 1994-10-11 1996-07-16 Telephonics Corporation Synchronously tuned power converter method and apparatus
JP3463828B2 (ja) * 1994-11-21 2003-11-05 ソニー株式会社 送信機
US5770979A (en) * 1996-05-21 1998-06-23 Cherry Semiconductor Corporation Programmable oscillator using one capacitor
JPH1065566A (ja) * 1996-08-23 1998-03-06 Matsushita Electric Ind Co Ltd 小型無線機
GB2325102B (en) * 1997-05-09 2001-10-10 Nokia Mobile Phones Ltd Down conversion mixer

Also Published As

Publication number Publication date
EP1367735A1 (en) 2003-12-03
AU3571099A (en) 1999-11-08
JP2005168035A (ja) 2005-06-23
WO1999055015A1 (en) 1999-10-28
IL139157A0 (en) 2001-11-25
KR100665463B1 (ko) 2007-01-04
KR20010034820A (ko) 2001-04-25
US6192225B1 (en) 2001-02-20
JP2002512471A (ja) 2002-04-23
CN1691527A (zh) 2005-11-02
EP1074093A1 (en) 2001-02-07
AU755670B2 (en) 2002-12-19
HK1039223B (zh) 2006-12-15
MY123208A (en) 2006-05-31
CN1306699A (zh) 2001-08-01
CN1254924C (zh) 2006-05-03
EE200000609A (et) 2002-02-15
HK1039223A1 (en) 2002-04-12

Similar Documents

Publication Publication Date Title
BR9909818A (pt) Aparelho para recebimento de um sinal de rf, processo de redução de distorção, aparelho para redução de emissões espúrias de um receptor, e, processo para a redução de emissões espúrias de um receptor
KR960706711A (ko) 위상/주파수 변조기(phase/frequency modulator)
KR840008900A (ko) 믹 서 장 치
US5663666A (en) Digital phase detector
KR930003585A (ko) 수신기
KR970701952A (ko) 정밀한 쿼드리쳐 신호 생성 회로 및 방법(Circuit and method for generating accurate guadrature signals)
EP1760877A1 (en) Reconfigurable signal modulator
DE59305343D1 (de) Phasenmoduliertes Interferometer
EP0139461B1 (en) Improvements relating to optical receivers
DK426389A (da) Fremgangsmaade og kredsloeb til konstatering af tilstedevaerelse eller ikke-tilstedevaerelse af mindst en frekvens med en kendt vaerdi i et af flere frekvenser sammensat indgangssignal
DE69609396T2 (de) Demodulatorschaltung für frequenzmoduliertes Signal in der Nähe einer Zwischenfrequenz
JP2511572B2 (ja) 光回転角速度センサの位相調整方法
RU1774496C (ru) Устройство фазовой автоподстройки частоты
KR0164570B1 (ko) 색상신호 발생회로
JPS59161924A (ja) 位相同期発振器
SU1688444A1 (ru) Когерентный демодул тор фазоманипулированных сигналов
SU1185564A1 (ru) Формирователь амплитудно-модулированных сигналов
SU546100A1 (ru) Фазовый преобразователь с автоматической коррекцией
SU824474A1 (ru) Частотный манипул тор
SU780154A1 (ru) Дискриминатор нулевых биений
JPH10224213A (ja) Ｐｌｌ回路を使用したジッタ発生装置
JPH04328933A (ja) 四相位相変調回路
SU1385245A2 (ru) Частотно-фазовый компаратор
SU690552A1 (ru) Устройство дл синхронизации воспроизводимой информации
JPS6463870A (en) Light interference angular velocity meter

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 8A,9A E 10A 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 1990 DE 25/02/2009.