WO1998045944A3 - Extended frequency range relaxation oscillator with improved linearity - Google Patents

Extended frequency range relaxation oscillator with improved linearity Download PDF

Info

Publication number
WO1998045944A3
WO1998045944A3 PCT/CA1998/000294 CA9800294W WO9845944A3 WO 1998045944 A3 WO1998045944 A3 WO 1998045944A3 CA 9800294 W CA9800294 W CA 9800294W WO 9845944 A3 WO9845944 A3 WO 9845944A3
Authority
WO
WIPO (PCT)
Prior art keywords
oscillator
voltage
relaxation oscillator
frequency range
extended frequency
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.)
Ceased
Application number
PCT/CA1998/000294
Other languages
French (fr)
Other versions
WO1998045944A2 (en
Inventor
Mohammad Hossein Shakiba
Tirdad Sowlati Hashjani
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.)
Gennum Corp
Original Assignee
Gennum 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 Gennum Corp filed Critical Gennum Corp
Priority to EP98912179A priority Critical patent/EP0972341B1/en
Priority to CA002283892A priority patent/CA2283892A1/en
Priority to AT98912179T priority patent/ATE243388T1/en
Priority to DK98912179T priority patent/DK0972341T3/en
Priority to US09/381,291 priority patent/US6201450B1/en
Priority to JP54217298A priority patent/JP2001519105A/en
Priority to DE69815667T priority patent/DE69815667T2/en
Priority to AU67156/98A priority patent/AU6715698A/en
Publication of WO1998045944A2 publication Critical patent/WO1998045944A2/en
Publication of WO1998045944A3 publication Critical patent/WO1998045944A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
    • H03K3/023—Generators characterised by the type of circuit or by the means used for producing pulses by the use of differential amplifiers or comparators, with internal or external positive feedback
    • H03K3/0231—Astable circuits
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
    • H03K3/26—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback
    • H03K3/28—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback
    • H03K3/281—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback using at least two transistors so coupled that the input of one is derived from the output of another, e.g. multivibrator
    • H03K3/282—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback using at least two transistors so coupled that the input of one is derived from the output of another, e.g. multivibrator astable
    • H03K3/2823—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback using at least two transistors so coupled that the input of one is derived from the output of another, e.g. multivibrator astable using two active transistor of the same conductivity type

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)

Abstract

A relaxation oscillator, such as a voltage controlled oscillator (VCO), with automatic swing control feedback which dynamically monitors the voltage swing across a capacitor and adjusts the oscillator threshold voltage, at which reversal of the polarity of the charging/discharging current occurs, to maintain the effective voltage swing at a constant level. The improved relaxation oscillator provides a very wide linear range of frequency variation versus control voltage (or current) and allows for the extendibility of linear operation to or near the maximum frequency that can be practically achieved by the oscillator circuitry.
PCT/CA1998/000294 1997-04-03 1998-04-01 Extended frequency range relaxation oscillator with improved linearity Ceased WO1998045944A2 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
EP98912179A EP0972341B1 (en) 1997-04-03 1998-04-01 Extended frequency range relaxation oscillator with improved linearity
CA002283892A CA2283892A1 (en) 1997-04-03 1998-04-01 Extended frequency range relaxation oscillator with improved linearity
AT98912179T ATE243388T1 (en) 1997-04-03 1998-04-01 RELAXATION OSCILLATOR WITH EXTENDED FREQUENCY RANGE AND IMPROVED LINEARITY
DK98912179T DK0972341T3 (en) 1997-04-03 1998-04-01 Kip oscillator with extended frequency range and improved linearity
US09/381,291 US6201450B1 (en) 1997-04-03 1998-04-01 Extended frequency range relaxation oscillator with improved linearity
JP54217298A JP2001519105A (en) 1997-04-03 1998-04-01 Extended frequency range relaxation oscillator with improved linearity
DE69815667T DE69815667T2 (en) 1997-04-03 1998-04-01 RELAXATION OSCILLATOR WITH EXTENDED FREQUENCY RANGE AND IMPROVED LINEARITY
AU67156/98A AU6715698A (en) 1997-04-03 1998-04-01 Extended frequency range relaxation oscillator with improved linearity

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA2,201,697 1997-04-03
CA002201697A CA2201697A1 (en) 1997-04-03 1997-04-03 Extended frequency range relaxation oscillator with improved linearity

Publications (2)

Publication Number Publication Date
WO1998045944A2 WO1998045944A2 (en) 1998-10-15
WO1998045944A3 true WO1998045944A3 (en) 1999-01-07

Family

ID=4160318

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CA1998/000294 Ceased WO1998045944A2 (en) 1997-04-03 1998-04-01 Extended frequency range relaxation oscillator with improved linearity

Country Status (9)

Country Link
US (1) US6201450B1 (en)
EP (2) EP0972341B1 (en)
JP (1) JP2001519105A (en)
AT (1) ATE243388T1 (en)
AU (1) AU6715698A (en)
CA (1) CA2201697A1 (en)
DE (1) DE69815667T2 (en)
DK (1) DK0972341T3 (en)
WO (1) WO1998045944A2 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6404296B1 (en) * 2000-12-04 2002-06-11 Triquint Semiconductor, Inc. Amplitude-leveled wide-range source-coupled oscillator
US6650195B1 (en) 2001-07-30 2003-11-18 Xilinx, Inc. Oscillator with differential tunable tank circuit
US6727768B1 (en) 2002-10-29 2004-04-27 Institute Of Microelectronics Relaxation CCO for PLL-based constant tuning of GM-C filters
JP2005117140A (en) * 2003-10-03 2005-04-28 Nec Electronics Corp Oscillation circuit and semiconductor integrated circuit provided with same
TWI270252B (en) * 2004-04-30 2007-01-01 Richwave Technology Corp Oscillation signal generation method and device
US20050253659A1 (en) * 2004-05-14 2005-11-17 Pierre Favrat Current-controlled quadrature oscillator using differential gm/C cells incorporating amplitude limiters
US7847648B2 (en) * 2008-10-13 2010-12-07 Texas Instruments Incorporated Oscillator with delay compensation
US8719475B2 (en) * 2010-07-13 2014-05-06 Broadcom Corporation Method and system for utilizing low power superspeed inter-chip (LP-SSIC) communications
US9054687B2 (en) 2013-07-30 2015-06-09 Qualcomm Incorporated VCO with linear gain over a very wide tuning range
US10769511B2 (en) 2019-01-03 2020-09-08 Wiliot, Ltd Low energy transmitter
JP7731238B2 (en) * 2021-07-29 2025-08-29 エイブリック株式会社 Oscillator circuit

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3296556A (en) * 1962-09-21 1967-01-03 Martin Marietta Corp Pulse duty ratio modulator
EP0180084A2 (en) * 1984-10-27 1986-05-07 Kabushiki Kaisha Toshiba Voltage controlled oscillator
US4977381A (en) * 1989-06-05 1990-12-11 Motorola, Inc. Differential relaxation oscillator
US5489878A (en) * 1994-11-23 1996-02-06 Analog Devices Current-controlled quadrature oscillator based on differential gm /C cells
EP0753934A1 (en) * 1995-07-13 1997-01-15 STMicroelectronics S.r.l. Single-output dual-supply class D amplifier

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3296556A (en) * 1962-09-21 1967-01-03 Martin Marietta Corp Pulse duty ratio modulator
EP0180084A2 (en) * 1984-10-27 1986-05-07 Kabushiki Kaisha Toshiba Voltage controlled oscillator
US4977381A (en) * 1989-06-05 1990-12-11 Motorola, Inc. Differential relaxation oscillator
US5489878A (en) * 1994-11-23 1996-02-06 Analog Devices Current-controlled quadrature oscillator based on differential gm /C cells
EP0753934A1 (en) * 1995-07-13 1997-01-15 STMicroelectronics S.r.l. Single-output dual-supply class D amplifier

Also Published As

Publication number Publication date
EP1158677A3 (en) 2003-02-05
WO1998045944A2 (en) 1998-10-15
AU6715698A (en) 1998-10-30
DE69815667D1 (en) 2003-07-24
US6201450B1 (en) 2001-03-13
JP2001519105A (en) 2001-10-16
EP0972341B1 (en) 2003-06-18
ATE243388T1 (en) 2003-07-15
EP1158677A2 (en) 2001-11-28
DE69815667T2 (en) 2003-12-04
CA2201697A1 (en) 1998-10-03
EP0972341A1 (en) 2000-01-19
DK0972341T3 (en) 2003-07-21

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