CH646304GA3 - - Google Patents
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- Publication number
- CH646304GA3 CH646304GA3 CH1066979A CH1066979A CH646304GA3 CH 646304G A3 CH646304G A3 CH 646304GA3 CH 1066979 A CH1066979 A CH 1066979A CH 1066979 A CH1066979 A CH 1066979A CH 646304G A3 CH646304G A3 CH 646304GA3
- Authority
- CH
- Switzerland
- Prior art keywords
- flexural
- frequency
- torsional
- frequencies
- weight
- Prior art date
Links
- 239000013078 crystal Substances 0.000 abstract 3
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 230000002349 favourable effect Effects 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 239000010453 quartz Substances 0.000 abstract 1
- 230000000717 retained effect Effects 0.000 abstract 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H3/00—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators
- H03H3/007—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks
- H03H3/02—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of piezoelectric or electrostrictive resonators or networks
- H03H3/04—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of piezoelectric or electrostrictive resonators or networks for obtaining desired frequency or temperature coefficient
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
- H03H9/15—Constructional features of resonators consisting of piezoelectric or electrostrictive material
- H03H9/21—Crystal tuning forks
- H03H9/215—Crystal tuning forks consisting of quartz
Landscapes
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
Abstract
Cutting a quartz tuning fork crystal vibrator at a preferred angle and with a thickness which establishes a close coupled relationship between the flexural and torsional modes of vibration of the arms or tines produces a vibrator having a highly favorable cubic frequency temperature characteristic at predetermined frequencies. Weight added to the ends of the vibrating tines reduces the frequency of both flexural and torsional vibration, whereas weight added at nodal points in the flexural vibration primarily reduces only the torsional vibrational mode. Accordingly, a wide range of frequency adjustments is possible. Deviations from the desired crystal operating frequency due to manufacturing variances are adjustable by sequential weight modifications while the desirable cubic temperature characteristic is retained. High accuracy over a wide temperature range permits operation in oscillator circuits at relatively low frequencies and with attendant low power consumption. Close coupling between vibrational modes occurs when the difference between the flexural and torsional frequencies is </=0.15 of the flexural frequency. The principles for dimensioning the crystal, and adjusting thickness and weight, are applicable to both fundamental and overtone frequencies.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14950078A JPS5575326A (en) | 1978-12-01 | 1978-12-01 | Tuning fork type crystal oscillator |
| JP14949978A JPS5575325A (en) | 1978-12-01 | 1978-12-01 | Tuning fork type crystal oscillator |
| JP15018678A JPS5575320A (en) | 1978-12-04 | 1978-12-04 | Frequency control method for tuning fork type oscillator |
| JP15018278A JPS5575318A (en) | 1978-12-04 | 1978-12-04 | Tuning fork type oscillator |
| JP15018378A JPS5575319A (en) | 1978-12-04 | 1978-12-04 | Tuning fork type oscillator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH646304GA3 true CH646304GA3 (en) | 1984-11-30 |
Family
ID=27527873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH1066979A CH646304GA3 (en) | 1978-12-01 | 1979-11-30 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US4320320A (en) |
| CH (1) | CH646304GA3 (en) |
| DE (1) | DE2948331A1 (en) |
| FR (1) | FR2443164B1 (en) |
Families Citing this family (41)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55112017A (en) * | 1979-02-20 | 1980-08-29 | Seiko Epson Corp | Electrode of tuning fork type crystal oscillator |
| FR2477803A1 (en) * | 1980-03-04 | 1981-09-11 | Suwa Seikosha Kk | QUARTZ RESONATOR TYPE DIAPASON TYPE COUPLING |
| JPS5748819A (en) * | 1980-09-08 | 1982-03-20 | Seiko Epson Corp | Coupling tuning fork type quartz oscillator |
| US4498025A (en) * | 1980-12-12 | 1985-02-05 | Seiko Instruments & Electronics Ltd. | Tuning fork |
| US4447753A (en) * | 1981-03-25 | 1984-05-08 | Seiko Instruments & Electronics Ltd. | Miniature GT-cut quartz resonator |
| JPS58182311A (en) * | 1982-04-20 | 1983-10-25 | Seiko Instr & Electronics Ltd | Tuning fork type oscillator |
| CH650897GA3 (en) * | 1982-07-14 | 1985-08-30 | ||
| US4472655A (en) * | 1983-03-25 | 1984-09-18 | Kabushiki Kaisha Daini Seikosha | Tuning fork flexural quartz resonator |
| US4540909A (en) * | 1983-04-04 | 1985-09-10 | Seiko Instruments & Electronics Ltd. | Tuning fork type quartz crystal resonator with variable width base |
| US4525647A (en) * | 1983-12-02 | 1985-06-25 | Motorola, Inc. | Dual frequency, dual mode quartz resonator |
| DE3776911D1 (en) * | 1986-07-01 | 1992-04-02 | Sensor Int | Vibration type weight measuring apparatus |
| CH683050A5 (en) * | 1991-06-04 | 1993-12-31 | Suisse Electronique Microtech | Vibrating quartz resonator in fundamental mode of twist. |
| EP0806631B1 (en) * | 1993-02-03 | 2001-11-07 | Matsushita Electric Industrial Co., Ltd. | Angular velocity sensor and its fabricating |
| US6058778A (en) | 1997-10-24 | 2000-05-09 | Stmicroelectronics, Inc. | Integrated sensor having plurality of released beams for sensing acceleration |
| US5917226A (en) | 1997-10-24 | 1999-06-29 | Stmicroelectronics, Inc. | Integrated released beam, thermo-mechanical sensor for sensing temperature variations and associated methods |
| US6028343A (en) * | 1997-10-24 | 2000-02-22 | Stmicroelectronics, Inc. | Integrated released beam sensor for sensing acceleration and associated methods |
| US6124765A (en) * | 1997-10-24 | 2000-09-26 | Stmicroelectronics, Inc. | Integrated released beam oscillator and associated methods |
| JP3335122B2 (en) | 1998-05-06 | 2002-10-15 | 松下電器産業株式会社 | Angular velocity sensor |
| JP3887137B2 (en) * | 1999-01-29 | 2007-02-28 | セイコーインスツル株式会社 | Method for manufacturing piezoelectric vibrator |
| CA2327576C (en) | 1999-12-21 | 2008-09-30 | Eta Sa Fabriques D'ebauches | Low frequency quartz oscillator device with improved thermal characteristics |
| DE69906097T2 (en) * | 1999-12-21 | 2004-02-19 | Eta S.A. Fabriques D'ebauches | Oscillator arrangement for a low-frequency quartz and with improved temperature behavior |
| US6791243B2 (en) * | 2002-03-06 | 2004-09-14 | Piedek Technical Laboratory | Quartz crystal unit and its manufacturing method |
| US6897743B2 (en) * | 2002-03-06 | 2005-05-24 | Piedek Technical Laboratory | Electronic apparatus with two quartz crystal oscillators utilizing different vibration modes |
| US7071794B2 (en) * | 2002-03-06 | 2006-07-04 | Piedek Technical Laboratory | Quartz crystal resonator, unit having resonator, oscillator having unit, electronic apparatus having oscillator, and method for manufacturing electronic apparatus |
| US9203135B2 (en) * | 2002-04-23 | 2015-12-01 | Piedek Technical Laboratory | Method for manufacturing quartz crystal resonator |
| CN1706098B (en) * | 2003-03-28 | 2013-01-02 | 株式会社大真空 | Frequency regulating method for tuning fork type vibrator and tuning fork type vibrator frequency-regulated by the method |
| US11563406B2 (en) * | 2003-06-30 | 2023-01-24 | Piedek Technical Laboratory | Quartz crystal resonator, quartz crystal unit, and quartz crystal oscillator |
| WO2005092548A1 (en) * | 2004-03-26 | 2005-10-06 | Makino Milling Machine Co., Ltd. | Cutting method and machine and rib electrode for electric discharge machining |
| US7764145B2 (en) * | 2006-11-30 | 2010-07-27 | Nihon Dempa Kogyo Co., Ltd. | Piezoelectric resonator, method of manufacturing the same and electronic part using the same |
| JP2009165006A (en) * | 2008-01-09 | 2009-07-23 | Nippon Dempa Kogyo Co Ltd | Piezoelectric vibrating piece, piezoelectric device, and tuning fork type piezoelectric vibrator frequency adjusting method |
| EP2395661A1 (en) * | 2010-06-10 | 2011-12-14 | The Swatch Group Research and Development Ltd. | Resonator with temperature compensation of thermal coefficients of first and second order |
| US8569937B1 (en) | 2010-07-13 | 2013-10-29 | Hrl Laboratories, Llc | Piezoelectric resonator with capacitive sense and/or force rebalance electrodes to control an amplitude of vibration |
| US8305154B1 (en) | 2010-07-13 | 2012-11-06 | Hrl Laboratories, Llc | Parametrically driven quartz UHF oscillator |
| TW201242246A (en) | 2011-02-25 | 2012-10-16 | Seiko Epson Corp | Piezoelectric vibration element, piezoelectric vibrator, piezoelectric oscillator, vibration gyro element, vibration gyro sensor, and electronic apparatus |
| US8933759B1 (en) | 2012-07-13 | 2015-01-13 | Hrl Laboratories, Llc | Dynamic damping in a quartz oscillator |
| DE102013106787A1 (en) | 2013-06-28 | 2014-12-31 | Oxea Gmbh | Process for the preparation of n-butane derivatives |
| DE102013106790A1 (en) | 2013-06-28 | 2014-12-31 | Oxea Gmbh | Process for the preparation of 1,3-butanediol |
| WO2017106489A2 (en) | 2015-12-15 | 2017-06-22 | Qorvo Us, Inc. | Temperature compensation and operational configuration for bulk acoustic wave resonator devices |
| JP6723526B2 (en) * | 2016-05-25 | 2020-07-15 | 株式会社村田製作所 | Resonator and resonance device |
| US11824511B2 (en) | 2018-03-21 | 2023-11-21 | Qorvo Us, Inc. | Method for manufacturing piezoelectric bulk layers with tilted c-axis orientation |
| US11401601B2 (en) | 2019-09-13 | 2022-08-02 | Qorvo Us, Inc. | Piezoelectric bulk layers with tilted c-axis orientation and methods for making the same |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL266211A (en) * | 1960-06-21 | |||
| US3423609A (en) * | 1964-01-30 | 1969-01-21 | Hewlett Packard Co | Quartz crystal temperature transducer |
| US3826931A (en) * | 1967-10-26 | 1974-07-30 | Hewlett Packard Co | Dual crystal resonator apparatus |
| US3691411A (en) * | 1971-01-19 | 1972-09-12 | Albert Pavlovich Fedorkov | Piezoelectric quartz element |
| JPS49131088A (en) * | 1973-04-16 | 1974-12-16 | Suwa Seikosha Kk | |
| JPS583602B2 (en) * | 1974-11-09 | 1983-01-22 | セイコーエプソン株式会社 | Suishiyo Shindoushi |
| JPS6051283B2 (en) * | 1975-09-10 | 1985-11-13 | 株式会社精工舎 | How to adjust frequency temperature characteristics of GT cut crystal resonator |
| CH607880B (en) * | 1976-01-16 | Centre Electron Horloger | PIEZO-ELECTRIC RESONATOR. | |
| US4071797A (en) * | 1976-01-20 | 1978-01-31 | Societe Suisse Pour L'industrie Horlogere Management Services S.A. | Quartz piezo-electric element vibrating in a coupled mode |
| JPS5323589A (en) * | 1976-08-18 | 1978-03-04 | Seiko Epson Corp | Crystal vibrator |
| JPS5851687B2 (en) * | 1976-10-22 | 1983-11-17 | セイコーインスツルメンツ株式会社 | Tuning fork crystal oscillator |
| US4076987A (en) * | 1976-12-10 | 1978-02-28 | Societe Suisse Pour L'industrie Horlogere Management Services S.A. | Multiple resonator or filter vibrating in a coupled mode |
| GB2006520B (en) * | 1977-09-07 | 1982-06-30 | Suwa Seikosha Kk | Piezoelectric resonator |
| US4160183A (en) * | 1978-05-26 | 1979-07-03 | Hewlett-Packard Company | Oscillator having a quartz resonator cut to compensate for static and dynamic thermal transients |
-
1979
- 1979-05-29 US US06/042,732 patent/US4320320A/en not_active Expired - Lifetime
- 1979-10-23 FR FR7926237A patent/FR2443164B1/en not_active Expired
- 1979-11-30 CH CH1066979A patent/CH646304GA3/fr unknown
- 1979-11-30 DE DE19792948331 patent/DE2948331A1/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| US4320320A (en) | 1982-03-16 |
| FR2443164A1 (en) | 1980-06-27 |
| DE2948331A1 (en) | 1980-06-19 |
| FR2443164B1 (en) | 1985-08-02 |
| DE2948331C2 (en) | 1987-06-19 |
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