[go: up one dir, main page]

DE69228453D1 - Frequenzsynthesizer mit lokaler Oszillatorschaltung zur Anwendung in einem Vielfachzugriffszeitmultiplexsystem - Google Patents

Frequenzsynthesizer mit lokaler Oszillatorschaltung zur Anwendung in einem Vielfachzugriffszeitmultiplexsystem

Info

Publication number
DE69228453D1
DE69228453D1 DE69228453T DE69228453T DE69228453D1 DE 69228453 D1 DE69228453 D1 DE 69228453D1 DE 69228453 T DE69228453 T DE 69228453T DE 69228453 T DE69228453 T DE 69228453T DE 69228453 D1 DE69228453 D1 DE 69228453D1
Authority
DE
Germany
Prior art keywords
multiple access
time division
local oscillator
access time
oscillator circuit
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
DE69228453T
Other languages
English (en)
Other versions
DE69228453T2 (de
Inventor
Jun Jokura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC 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 NEC Corp filed Critical NEC Corp
Publication of DE69228453D1 publication Critical patent/DE69228453D1/de
Application granted granted Critical
Publication of DE69228453T2 publication Critical patent/DE69228453T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/16—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
    • H03L7/22—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using more than one loop
    • H03L7/23—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using more than one loop with pulse counters or frequency dividers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/0079—Receiver details
    • H04L7/0083—Receiver details taking measures against momentary loss of synchronisation, e.g. inhibiting the synchronisation, using idle words or using redundant clocks

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Radio Relay Systems (AREA)
DE69228453T 1991-07-31 1992-07-30 Frequenzsynthesizer mit lokaler Oszillatorschaltung zur Anwendung in einem Vielfachzugriffszeitmultiplexsystem Expired - Fee Related DE69228453T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3190431A JPH0537435A (ja) 1991-07-31 1991-07-31 Ｔｄｍａ方式に用いる局部発振周波数シンセサイザ

Publications (2)

Publication Number Publication Date
DE69228453D1 true DE69228453D1 (de) 1999-04-01
DE69228453T2 DE69228453T2 (de) 1999-10-07

Family

ID=16258020

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69228453T Expired - Fee Related DE69228453T2 (de) 1991-07-31 1992-07-30 Frequenzsynthesizer mit lokaler Oszillatorschaltung zur Anwendung in einem Vielfachzugriffszeitmultiplexsystem

Country Status (6)

Country Link
US (1) US5270669A (de)
EP (1) EP0526202B1 (de)
JP (1) JPH0537435A (de)
AU (1) AU653121B2 (de)
CA (1) CA2074800C (de)
DE (1) DE69228453T2 (de)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4126915A1 (de) * 1991-08-14 1993-02-18 Siemens Ag Integrierter frequenzsynthesizer-schaltkreis fuer sende-und empfangsbetrieb
US5329250A (en) * 1992-02-25 1994-07-12 Sanyo Electric Co., Ltd. Double phase locked loop circuit
DE4207045C2 (de) * 1992-03-06 1996-07-25 Bruker Medizintech Digitales Frequenzerzeugungsgerät
FR2689342A1 (fr) * 1992-03-31 1993-10-01 Sgs Thomson Microelectronics Boucle à verrouillage de fréquence.
US5347232A (en) * 1992-05-15 1994-09-13 Matsushita Electric Industrial Co. Ltd. Phase locked loop clock generator
CA2110030C (en) * 1992-11-30 1998-09-15 Fumio Nakano Method and apparatus for clock synchronizing system
US5317284A (en) * 1993-02-08 1994-05-31 Hughes Aircraft Company Wide band, low noise, fine step tuning, phase locked loop frequency synthesizer
US5317285A (en) * 1993-02-26 1994-05-31 Motorola, Inc. Frequency synthesizer employing a continuously adaptive phase detector and method
JPH0722971A (ja) * 1993-07-06 1995-01-24 Mitsubishi Electric Corp 無線通信機
US5526527A (en) * 1993-10-01 1996-06-11 Pacific Communication Sciences, Inc. Method and apparatus for frequency synthesization in digital cordless telephones
US5493700A (en) * 1993-10-29 1996-02-20 Motorola Automatic frequency control apparatus
KR0142949B1 (ko) * 1995-06-16 1998-08-01 김광호 이동국과 기지국간의 초기 동기 맞춤시간을 최소화한 주파수 운용 방법
JPH09200070A (ja) * 1996-01-12 1997-07-31 Matsushita Electric Ind Co Ltd 受信回路
US5789987A (en) * 1996-01-22 1998-08-04 Motorola, Inc. Low-noise frequency synthesizer
JP3395529B2 (ja) * 1996-06-28 2003-04-14 三菱電機株式会社 周波数シンセサイザ
US6163223A (en) * 1998-09-02 2000-12-19 Anritsu Company High performance dual mode multiple source/local oscillator module
JP2000124802A (ja) * 1998-10-20 2000-04-28 Mitsubishi Electric Corp Ｐｌｌ回路
US6441667B1 (en) * 2001-03-29 2002-08-27 International Business Machines Corporation Multiphase clock generator
DE60215773T2 (de) * 2002-04-23 2007-09-06 Siemens S.P.A. Transceiver mit Frequenzaufbereitungsschaltung
US6954109B2 (en) 2003-08-18 2005-10-11 Nokia Corporation Provision of local oscillator signals
US7747237B2 (en) * 2004-04-09 2010-06-29 Skyworks Solutions, Inc. High agility frequency synthesizer phase-locked loop
NL1031209C2 (nl) * 2006-02-22 2007-08-24 Enraf Bv Werkwijze en inrichting voor het nauwkeurig vaststellen van het niveau L van een vloeistof met behulp van naar het vloeistofniveau uitgestraalde radarsignalen en door het vloeistofniveau gereflecteerde radarsignalen.
WO2008018276A1 (en) * 2006-08-11 2008-02-14 Nec Corporation Voltage controlled oscillator, frequency synthesizer and oscillating frequency control method
NL1034327C2 (nl) * 2007-09-04 2009-03-05 Enraf Bv Werkwijze en inrichting voor het binnen een bepaald meetbereik vaststellen van het niveau L van een vloeistof met behulp van naar het vloeistofniveau uitgestraalde radarsignalen en door het vloeistofniveau gereflecteerde radarsignalen.
US8224594B2 (en) * 2008-09-18 2012-07-17 Enraf B.V. Apparatus and method for dynamic peak detection, identification, and tracking in level gauging applications
US8659472B2 (en) * 2008-09-18 2014-02-25 Enraf B.V. Method and apparatus for highly accurate higher frequency signal generation and related level gauge
US8271212B2 (en) * 2008-09-18 2012-09-18 Enraf B.V. Method for robust gauging accuracy for level gauges under mismatch and large opening effects in stillpipes and related apparatus
JP5244874B2 (ja) 2010-09-03 2013-07-24 トヨタ自動車株式会社 コンベア装置
US9046406B2 (en) 2012-04-11 2015-06-02 Honeywell International Inc. Advanced antenna protection for radars in level gauging and other applications

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4086544A (en) * 1972-06-12 1978-04-25 John Fluke Mfg. Co., Inc. Frequency synthesizer using phase locked loops
JPS6096029A (ja) * 1983-10-31 1985-05-29 Anritsu Corp 信号発生器
JPS60170327A (ja) * 1984-02-14 1985-09-03 Fujitsu Ltd シンセサイザ
JPS6132627A (ja) * 1984-07-25 1986-02-15 Nippon Telegr & Teleph Corp <Ntt> 移動通信制御方式
JPS63254833A (ja) * 1987-04-10 1988-10-21 Iwatsu Electric Co Ltd 移動体通信の無線チヤネル切替方法とシステム
DE3720682C2 (de) * 1987-06-23 1994-12-08 Hagenuk Telecom Gmbh Oszillatoreinrichtung zur Erzeugung von wenigstens zwei unterschiedlichen Frequenzen
EP0318033B1 (de) * 1987-11-27 1995-09-13 Nec Corporation Verfahren zum Umschalten in einem digitalen Zellularmobilkommunikationssystem und mobile Einheit
JPH0622345B2 (ja) * 1988-01-14 1994-03-23 東京電力株式会社 移動体通信方式
JP2852045B2 (ja) * 1988-02-25 1999-01-27 日本電気株式会社 無線周波数切替方法

Also Published As

Publication number Publication date
US5270669A (en) 1993-12-14
AU2069592A (en) 1993-02-04
DE69228453T2 (de) 1999-10-07
EP0526202A2 (de) 1993-02-03
EP0526202A3 (en) 1993-03-31
EP0526202B1 (de) 1999-02-24
AU653121B2 (en) 1994-09-15
JPH0537435A (ja) 1993-02-12
CA2074800C (en) 1996-01-16
CA2074800A1 (en) 1993-02-01

Similar Documents

Publication Publication Date Title
DE69228453D1 (de) Frequenzsynthesizer mit lokaler Oszillatorschaltung zur Anwendung in einem Vielfachzugriffszeitmultiplexsystem
GB2261780B (en) Digital frequency synthesizer having AFC and modulation applied to frequency divider
IL89833A0 (en) Frequency synthesizer
DE69315614D1 (de) Frequenzsynthesierer
EP0412491A3 (en) Frequency synthesizer
GB2271480B (en) Pll frequency synthesizer circuit
IL96351A0 (en) Digital frequency synthesizer
EP0481804A3 (en) Pll frequency synthesizer
FI921706L (fi) Jänniteohjattu oskillaattori
DE69523193D1 (de) PLL-Schaltung mit verringter Einrastzeit
DE69033013D1 (de) Signalgenerator zur Verwendung in einem Frequenzsynthetisierer
DE69410913D1 (de) Synchronisierungsschaltung mit einem schnellen digitalen Schlupffrequenzzähler
DE69027628D1 (de) Digitalabgestimmter optischer Frequenzsynthesierer mit wahlfreiem Zugriff
EP0442461A3 (en) Voltage-controlled oscillator circuit
DE69431855D1 (de) PLL-Frequenzsynthetisiererschaltung
DK0461358T3 (da) En frekvenssynthesizer
DE69618524D1 (de) Empfänger und Abstimmschaltung mit einem Frequenzsynthetisierer dafür
BR9304182A (pt) Etiqueta de transpondor divisor de frequencia
DE69501752D1 (de) PLL-Frequenzsynthetisierer
DE69213499D1 (de) Synthesizer mit einem Phasenregelkreis für die Verwendung in einem Zeitmultiplexkommunikationssystem
DE68927158D1 (de) PLL-Synthetisierer
DE69314373D1 (de) Frequenzabstimmung mit Frequenzsynthesierer
DE69026230D1 (de) Phasenregelschaltung mit verringerter Frequenz/Phasensynchronisierungszeit
DE69420180D1 (de) Digitaler programmierbarer Frequenzteiler in einem Phasenregelkreis
DE69127669D1 (de) Frequenzsynthetisierer

Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee