GB1014662A - Improvements in piezo-electric quartz crystals - Google Patents
Improvements in piezo-electric quartz crystalsInfo
- Publication number
- GB1014662A GB1014662A GB103763A GB103763A GB1014662A GB 1014662 A GB1014662 A GB 1014662A GB 103763 A GB103763 A GB 103763A GB 103763 A GB103763 A GB 103763A GB 1014662 A GB1014662 A GB 1014662A
- Authority
- GB
- United Kingdom
- Prior art keywords
- axis
- electrodes
- cut
- degrees
- plate
- 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
- 239000013078 crystal Substances 0.000 title abstract 3
- 239000010453 quartz Substances 0.000 title abstract 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title abstract 2
- 230000005684 electric field Effects 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/15—Constructional features of resonators consisting of piezoelectric or electrostrictive material
- H03H9/17—Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator
- H03H9/19—Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator consisting of quartz
-
- G—PHYSICS
- G04—HOROLOGY
- G04F—TIME-INTERVAL MEASURING
- G04F5/00—Apparatus for producing preselected time intervals for use as timing standards
- G04F5/04—Apparatus for producing preselected time intervals for use as timing standards using oscillators with electromechanical resonators producing electric oscillations or timing pulses
- G04F5/06—Apparatus for producing preselected time intervals for use as timing standards using oscillators with electromechanical resonators producing electric oscillations or timing pulses using piezoelectric resonators
- G04F5/063—Constructional details
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- General Physics & Mathematics (AREA)
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
Abstract
1,014,662. Piezoelectric crystals. PHILIPS ELECTRIC & ASSOCIATED INDUSTRIES Ltd. Jan. 9, 1963 [Jan. 12, 1962], No. 1037/63. Heading H1E. The electrodes adjacent the two long edges of a quartz NT-cut or MT-cut crystal plate are extended around the long edges on to the adjacent side faces. The NT and MT cuts are derived from an X cut plate by a clockwise rotation of about 8.5 degrees about the X axis, the rotation being considered from the positive end of this axis. Thereafter, further rotations of 60 degrees and of 36 degrees about the Y<SP>1</SP> axis define respectively the NT (Fig. 3), MT (Fig. 4) cuts. When used in a flexural mode, the NT plate is provided with electrodes in the form of longitudinal strips 5, 7, 9, 11 which are crossconnected. The pairs of electrodes most remote from each other in the X direction (7 and 9) are extended to provide electrodes 13, 15 on the side faces. By this means, the mean orientation of the electric field corresponds more closely with the direction of the X axis. As a result, the ratio of the parallel to the series capacitance (C 0 /C 1 ) is reduced and the bandwidth improved. Fig. 4 shows the application to a MT-cut longitudinal oscillator.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL273491 | 1962-01-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1014662A true GB1014662A (en) | 1965-12-31 |
Family
ID=19753527
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB103763A Expired GB1014662A (en) | 1962-01-12 | 1963-01-09 | Improvements in piezo-electric quartz crystals |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE1247415B (en) |
GB (1) | GB1014662A (en) |
NL (1) | NL273491A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5304459A (en) * | 1990-04-27 | 1994-04-19 | Seiko Epson Corporation | At-cut crystal oscillating reed and method of etching the same |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11186869A (en) * | 1997-12-24 | 1999-07-09 | Murata Mfg Co Ltd | Lamination type thickness longitudinal piezoelectric resonator |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE763329C (en) * | 1941-04-29 | 1954-10-18 | Siemens & Halske A G | Quartz crystal executing bending vibrations |
DE1113477B (en) * | 1958-02-03 | 1961-09-07 | Marconi Wireless Telegraph Co | Piezoelectric bender vibrating in its XY plane and process for its manufacture |
-
0
- NL NL273491D patent/NL273491A/xx unknown
-
1963
- 1963-01-08 DE DE1963N0022577 patent/DE1247415B/en active Pending
- 1963-01-09 GB GB103763A patent/GB1014662A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5314577A (en) * | 1990-04-26 | 1994-05-24 | Seiko Epson Corporation | At-cut crystal oscillating reed and method of etching the same |
US5304459A (en) * | 1990-04-27 | 1994-04-19 | Seiko Epson Corporation | At-cut crystal oscillating reed and method of etching the same |
US5376861A (en) * | 1990-04-27 | 1994-12-27 | Seiko Epson Corporation | At-cut crystal oscillating reed and method of etching the same |
Also Published As
Publication number | Publication date |
---|---|
DE1247415B (en) | 1967-08-17 |
NL273491A (en) |
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