JPS572105A - Elastic surface wave oscillator - Google Patents

Elastic surface wave oscillator

Info

Publication number
JPS572105A
JPS572105A JP7494180A JP7494180A JPS572105A JP S572105 A JPS572105 A JP S572105A JP 7494180 A JP7494180 A JP 7494180A JP 7494180 A JP7494180 A JP 7494180A JP S572105 A JPS572105 A JP S572105A
Authority
JP
Japan
Prior art keywords
resonator
surface wave
voltage
oscillator
elastic surface
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.)
Granted
Application number
JP7494180A
Other languages
Japanese (ja)
Other versions
JPH0338762B2 (en
Inventor
Shigefumi Morishita
Yasuo Ehata
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP7494180A priority Critical patent/JPS572105A/en
Publication of JPS572105A publication Critical patent/JPS572105A/en
Publication of JPH0338762B2 publication Critical patent/JPH0338762B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/30—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator
    • H03B5/32—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator
    • H03B5/326—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator the resonator being an acoustic wave device, e.g. SAW or BAW device

Landscapes

  • Oscillators With Electromechanical Resonators (AREA)

Abstract

PURPOSE:To increase the reliability of an oscillator, by connecting a resistance or an inductance in parallel to an elastic surface wave resonator, furthermore connecting a capacitor in series to the resonator and thus avoiding an application of the DC voltage to both ends of the resonator. CONSTITUTION:The collector of a transistor (TR)18 forming an amplifying part of an oscillator is connected to a power source 19, and a DC bias is applied to the base of TR18 by resistances (R)15 and 16 to obtain an oscillation output through a terminal 21. While an elastic surface wave resonator 14, containing a surface wave energizing (receiving) transducer 2 at the center on a piezoelectric substrate 1 plus grating reflectors 3 and 4 at both the sides of the resonator respectively, possesses an equivalent circuit equal to a quartz oscillator. The resonator 14 is connected between the base of TR18 and an earth via a series capacitor (C) 24 with addition of an R14. In such constitution, the DC voltage is applied across the resonator 14 just for a time of the time constant decided by the CR of C23 and R24 and only in case when the power source is connected, and an application of the DC voltage can be avoided thereafter.
JP7494180A 1980-06-05 1980-06-05 Elastic surface wave oscillator Granted JPS572105A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7494180A JPS572105A (en) 1980-06-05 1980-06-05 Elastic surface wave oscillator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7494180A JPS572105A (en) 1980-06-05 1980-06-05 Elastic surface wave oscillator

Publications (2)

Publication Number Publication Date
JPS572105A true JPS572105A (en) 1982-01-07
JPH0338762B2 JPH0338762B2 (en) 1991-06-11

Family

ID=13561868

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7494180A Granted JPS572105A (en) 1980-06-05 1980-06-05 Elastic surface wave oscillator

Country Status (1)

Country Link
JP (1) JPS572105A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63198404A (en) * 1986-12-08 1988-08-17 アール．エフ　モノリシックス．インコーポレーテッド Super-regenerative detector and method of forming super-regenerative detecting circuit
US6075894A (en) * 1993-11-30 2000-06-13 Canon Kabushiki Kaisha High-quality edge-smoothing based upon a determination of consecutive black dots
USRE40036E1 (en) 1991-10-28 2008-01-29 Fujitsu Limited Surface acoustic wave filter
JP2025096482A (en) * 2019-03-28 2025-06-26 セイコーエプソン株式会社 Frequency shifter type optical modulator and laser Doppler measurement device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4862944U (en) * 1971-11-17 1973-08-10
JPS5232254U (en) * 1975-08-29 1977-03-07
JPS5532254U (en) * 1978-08-24 1980-03-01

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4862944U (en) * 1971-11-17 1973-08-10
JPS5232254U (en) * 1975-08-29 1977-03-07
JPS5532254U (en) * 1978-08-24 1980-03-01

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63198404A (en) * 1986-12-08 1988-08-17 アール．エフ　モノリシックス．インコーポレーテッド Super-regenerative detector and method of forming super-regenerative detecting circuit
USRE40036E1 (en) 1991-10-28 2008-01-29 Fujitsu Limited Surface acoustic wave filter
US6075894A (en) * 1993-11-30 2000-06-13 Canon Kabushiki Kaisha High-quality edge-smoothing based upon a determination of consecutive black dots
JP2025096482A (en) * 2019-03-28 2025-06-26 セイコーエプソン株式会社 Frequency shifter type optical modulator and laser Doppler measurement device

Also Published As

Publication number Publication date
JPH0338762B2 (en) 1991-06-11

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