GB2120478B - Voltage controlled oscillator - Google Patents
Voltage controlled oscillatorInfo
- Publication number
- GB2120478B GB2120478B GB08211746A GB8211746A GB2120478B GB 2120478 B GB2120478 B GB 2120478B GB 08211746 A GB08211746 A GB 08211746A GB 8211746 A GB8211746 A GB 8211746A GB 2120478 B GB2120478 B GB 2120478B
- Authority
- GB
- United Kingdom
- Prior art keywords
- controlled oscillator
- voltage controlled
- voltage
- oscillator
- controlled
- 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
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
- H03L7/18—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop
- H03L7/183—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between fixed numbers or the frequency divider dividing by a fixed number
- H03L7/187—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between fixed numbers or the frequency divider dividing by a fixed number using means for coarse tuning the voltage controlled oscillator of the loop
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J3/00—Continuous tuning
- H03J3/02—Details
- H03J3/16—Tuning without displacement of reactive element, e.g. by varying permeability
- H03J3/18—Tuning without displacement of reactive element, e.g. by varying permeability by discharge tube or semiconductor device simulating variable reactance
- H03J3/185—Tuning without displacement of reactive element, e.g. by varying permeability by discharge tube or semiconductor device simulating variable reactance with varactors, i.e. voltage variable reactive diodes
-
- 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
- H03L7/08—Details of the phase-locked loop
- H03L7/099—Details of the phase-locked loop concerning mainly the controlled oscillator of the loop
-
- 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
- H03L7/08—Details of the phase-locked loop
- H03L7/10—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range
- H03L7/101—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range using an additional control signal to the controlled loop oscillator derived from a signal generated in the loop
- H03L7/102—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range using an additional control signal to the controlled loop oscillator derived from a signal generated in the loop the additional signal being directly applied to the controlled loop oscillator
- H03L7/103—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range using an additional control signal to the controlled loop oscillator derived from a signal generated in the loop the additional signal being directly applied to the controlled loop oscillator the additional signal being a digital signal
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L2207/00—Indexing scheme relating to automatic control of frequency or phase and to synchronisation
- H03L2207/06—Phase locked loops with a controlled oscillator having at least two frequency control terminals
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB08211746A GB2120478B (en) | 1982-04-22 | 1982-04-22 | Voltage controlled oscillator |
DE19833313868 DE3313868A1 (de) | 1982-04-22 | 1983-04-16 | Spannungsgesteuerter oszillator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB08211746A GB2120478B (en) | 1982-04-22 | 1982-04-22 | Voltage controlled oscillator |
Publications (2)
Publication Number | Publication Date |
---|---|
GB2120478A GB2120478A (en) | 1983-11-30 |
GB2120478B true GB2120478B (en) | 1985-10-16 |
Family
ID=10529885
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB08211746A Expired GB2120478B (en) | 1982-04-22 | 1982-04-22 | Voltage controlled oscillator |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE3313868A1 (de) |
GB (1) | GB2120478B (de) |
Families Citing this family (43)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI107093B (fi) | 1997-09-24 | 2001-05-31 | Nokia Networks Oy | Integroidun oskillaattorin automaattinen virittäminen |
DE3721154A1 (de) * | 1987-06-26 | 1989-01-05 | Wegmann & Co | Frequenzsynthesizer |
US4893087A (en) * | 1988-01-07 | 1990-01-09 | Motorola, Inc. | Low voltage and low power frequency synthesizer |
DE3920008A1 (de) * | 1989-06-20 | 1991-01-10 | Philips Patentverwaltung | Phasenregelkreis |
JPH03235512A (ja) * | 1990-02-13 | 1991-10-21 | Oki Electric Ind Co Ltd | 電圧制御発振回路 |
US5208555A (en) * | 1991-09-23 | 1993-05-04 | Triquint Semiconductor, Inc. | Circuit for limiting maximum frequency output of a voltage controlled oscillator |
DE4314424A1 (de) * | 1993-05-03 | 1994-11-10 | Philips Patentverwaltung | Oszillator |
JPH0758637A (ja) * | 1993-08-13 | 1995-03-03 | Nec Corp | 周波数シンセサイザ |
GB2294830A (en) * | 1993-08-13 | 1996-05-08 | Nec Corp | Frequency synthesizer |
US5371425A (en) * | 1993-09-10 | 1994-12-06 | Sun Microsystems, Inc. | Digital damping method and apparatus for phase-locked loops |
DE4342266C2 (de) * | 1993-12-10 | 1996-10-24 | Texas Instruments Deutschland | Taktgenerator sowie Phasenkomparator zur Verwendung in einem solchen Taktgenerator |
US5686864A (en) * | 1995-09-05 | 1997-11-11 | Motorola, Inc. | Method and apparatus for controlling a voltage controlled oscillator tuning range in a frequency synthesizer |
WO1997037432A1 (en) * | 1996-04-02 | 1997-10-09 | Philips Electronics N.V. | Portable radio comprising a connectable circuit |
GB2320628B (en) * | 1996-12-18 | 2001-05-23 | Nec Technologies | Hybrid reference frequency correction system |
DE19811104A1 (de) * | 1998-03-13 | 1999-09-16 | Thomson Brandt Gmbh | Verfahren zum automatischen Umschalten der Bandbereiche bei einem Tuner |
EP0944171A1 (de) * | 1998-03-17 | 1999-09-22 | Koninklijke Philips Electronics N.V. | Elektronisches Gerät mit einem Frequenzsynthetisierer und Verfahren zum Einstellen eines Frequenzsynthetisierers |
GB2337382B (en) * | 1998-05-16 | 2000-12-13 | Motorola Ltd | Voltage controlled oscillator |
US6400930B1 (en) * | 1998-11-06 | 2002-06-04 | Dspc Israel, Ltd. | Frequency tuning for radio transceivers |
US7092043B2 (en) | 1998-11-12 | 2006-08-15 | Broadcom Corporation | Fully integrated tuner architecture |
US6885275B1 (en) | 1998-11-12 | 2005-04-26 | Broadcom Corporation | Multi-track integrated spiral inductor |
IT1303599B1 (it) * | 1998-12-11 | 2000-11-14 | Cselt Ct Studi E Lab T | Circuito ad aggancio di fase. |
GB9916907D0 (en) | 1999-07-19 | 1999-09-22 | Cambridge Silicon Radio Ltd | Variable oscillator |
EP1203449A1 (de) * | 1999-08-02 | 2002-05-08 | QUALCOMM Incorporated | Verfahren und anordnung für einen spannungsgesteuerten oszillator mit frequenzbandumschaltung, der unempfindlich gegen störspannungen ist |
EP1146640A1 (de) * | 2000-04-10 | 2001-10-17 | Infineon Technologies AG | Integrierter Hochfrequenzschwingkreis mit Abgleichkondensatoren |
DE60023895T2 (de) | 2000-09-15 | 2006-07-27 | Alcatel | Spannungsgesteuerter Oszillator mit automatischer Mittenfrequenzeinstellung |
US6404289B1 (en) | 2000-12-22 | 2002-06-11 | Atheros Communications, Inc. | Synthesizer with lock detector, lock algorithm, extended range VCO, and a simplified dual modulus divider |
US6496075B2 (en) * | 2001-03-14 | 2002-12-17 | Ericsson Inc. | Automatic tuning of VCO |
US7103127B2 (en) * | 2001-03-30 | 2006-09-05 | Skyworks Solutions, Inc. | System for controlling the frequency of an oscillator |
JP3542978B2 (ja) * | 2001-05-29 | 2004-07-14 | 埼玉日本電気株式会社 | 周波数同期装置および周波数同期制御方法 |
DE10134640B4 (de) * | 2001-07-17 | 2005-07-14 | Texas Instruments Deutschland Gmbh | PLL-Schaltung und Verfahren zur automatischen Einstellung ihrer Ausgangsfrequenz |
GB2379104A (en) * | 2001-08-21 | 2003-02-26 | Zarlink Semiconductor Ltd | Voltage controlled oscillators |
FR2829318B1 (fr) * | 2001-09-05 | 2003-12-12 | St Microelectronics Sa | Boucle a verrouillage de phase realisee sous forme de circuit integre |
US6876266B2 (en) * | 2002-06-10 | 2005-04-05 | Gct Semiconductor, Inc. | LC oscillator with wide tuning range and low phase noise |
CN100373776C (zh) * | 2002-06-28 | 2008-03-05 | 先进微装置公司 | 具有自动频率调整的锁相回路 |
DE10229130B3 (de) | 2002-06-28 | 2004-02-05 | Advanced Micro Devices, Inc., Sunnyvale | PLL mit Automatischer Frequenzeinstellung |
DE10251315A1 (de) * | 2002-11-04 | 2004-05-27 | Advanced Micro Devices, Inc., Sunnyvale | Automatische Mittenfrequenzabstimmung eines spannungsgesteuerten Oszillators |
US6778024B2 (en) * | 2002-11-14 | 2004-08-17 | Gennum Corporation | Dynamically trimmed voltage controlled oscillator |
KR100549221B1 (ko) * | 2003-12-22 | 2006-02-03 | 한국전자통신연구원 | 전압 제어 디지털 아날로그 발진기 및 이를 이용한 주파수합성기 |
DE102004057186B4 (de) * | 2004-11-26 | 2007-10-31 | Texas Instruments Deutschland Gmbh | PLL-Schaltung mit einem spannungsgesteuerten Oszillator |
DE102004059987B4 (de) * | 2004-12-13 | 2010-09-30 | Infineon Technologies Ag | Spannungsgesteuerte Oszillatorschaltung mit analoger und digitaler Ansteuerung und phasenverriegelte Regelschleife mit einer solchen Oszillatorschaltung |
GB2445980B (en) * | 2007-01-26 | 2009-04-22 | Motorola Inc | Signal generator apparatus and method of calibration therefor |
US10193560B2 (en) | 2016-12-28 | 2019-01-29 | Analog Bits Inc. | Method and circuits for charge pump devices of phase-locked loops |
US11696406B2 (en) | 2021-04-29 | 2023-07-04 | Microchip Technology Incorporated | Automatic trimming of a PCB-based LC circuit |
-
1982
- 1982-04-22 GB GB08211746A patent/GB2120478B/en not_active Expired
-
1983
- 1983-04-16 DE DE19833313868 patent/DE3313868A1/de not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
DE3313868A1 (de) | 1983-11-10 |
GB2120478A (en) | 1983-11-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |