JPS568914A - Low-frequency dispersed type delay line - Google Patents
Low-frequency dispersed type delay lineInfo
- Publication number
- JPS568914A JPS568914A JP8395279A JP8395279A JPS568914A JP S568914 A JPS568914 A JP S568914A JP 8395279 A JP8395279 A JP 8395279A JP 8395279 A JP8395279 A JP 8395279A JP S568914 A JPS568914 A JP S568914A
- Authority
- JP
- Japan
- Prior art keywords
- piezoelectric vibrators
- minimum
- maximum
- thickness
- 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.)
- Pending
Links
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
- H03H9/30—Time-delay networks
- H03H9/42—Time-delay networks using surface acoustic waves
- H03H9/44—Frequency dependent delay lines, e.g. dispersive delay lines
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
Abstract
PURPOSE:To make miniaturization possible while realizing application to the low frequency band by using tapered piezoelectric vibrators and a delay medium with bevels. CONSTITUTION:To the mutually-opposite surfaces of delay medium 8 with the bevels varying in propagation distance continuously, tapered piezoelectric vibrators 9 varying in thickness continuously are bonded; input terminals 10 and 10' are connected to one piezoelectric vibrator, and output terminals 11 and 11' to the other. Denoting the maximum thickness and minimum thickness of piezoelectric vibrators 9 as t1 and t2, minimum frequency f1 of the frequency band of those piezoelectric vibrators is K/t1 and maximum frequency f2 is K/t2. When the maximum propagation length and minimum propagation length at the parts where piezoelectric vibrators 9 are bonded to delay medium 8 are denoted as l1 and l2 and the velocity of an acoustic wave propagating is as (v), maximum delay time gamma1 and minimum delay time gamma2 are l1/v and l2/v respectively.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8395279A JPS568914A (en) | 1979-07-04 | 1979-07-04 | Low-frequency dispersed type delay line |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8395279A JPS568914A (en) | 1979-07-04 | 1979-07-04 | Low-frequency dispersed type delay line |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS568914A true JPS568914A (en) | 1981-01-29 |
Family
ID=13816912
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8395279A Pending JPS568914A (en) | 1979-07-04 | 1979-07-04 | Low-frequency dispersed type delay line |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS568914A (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58113349A (en) * | 1981-12-25 | 1983-07-06 | Mitsubishi Metal Corp | Cubic system boron nitride-base material to be sintered under superhigh pressure for wear resistant cutting tool |
JPS58145212A (en) * | 1982-02-02 | 1983-08-30 | Clarion Co Ltd | Surface acoustic wave device |
JPS5941445A (en) * | 1982-08-31 | 1984-03-07 | Mitsubishi Metal Corp | Cubic boron nitride base high pressure sintered material for cutting tool |
JPS5974254A (en) * | 1982-10-20 | 1984-04-26 | Mitsubishi Metal Corp | Material based on cubic boron nitride sintered under superhigh pressure for cutting tool |
JPS60187659A (en) * | 1984-12-25 | 1985-09-25 | Mitsubishi Metal Corp | Cubic boron nitride-base ultrahigh-pressure sintered material for cutting tool |
JPS6267174A (en) * | 1985-09-19 | 1987-03-26 | Sumitomo Electric Ind Ltd | Production of hard carbon film coated sintered hard alloy |
JPS62174380A (en) * | 1986-01-27 | 1987-07-31 | Mitsubishi Metal Corp | Surface coated sintered hard alloy member for cutting tool |
JPS6360280A (en) * | 1986-08-29 | 1988-03-16 | Mitsubishi Metal Corp | Production of surface-coated tungsten carbide-base sintered hard alloy |
WO1991003820A1 (en) * | 1989-09-01 | 1991-03-21 | Eev Limited | Transmission lines |
-
1979
- 1979-07-04 JP JP8395279A patent/JPS568914A/en active Pending
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58113349A (en) * | 1981-12-25 | 1983-07-06 | Mitsubishi Metal Corp | Cubic system boron nitride-base material to be sintered under superhigh pressure for wear resistant cutting tool |
JPS602379B2 (en) * | 1981-12-25 | 1985-01-21 | 三菱マテリアル株式会社 | Cubic boron nitride-based ultra-high pressure sintered material for cutting and wear-resistant tools |
JPS58145212A (en) * | 1982-02-02 | 1983-08-30 | Clarion Co Ltd | Surface acoustic wave device |
JPH043127B2 (en) * | 1982-02-02 | 1992-01-22 | ||
JPS5941445A (en) * | 1982-08-31 | 1984-03-07 | Mitsubishi Metal Corp | Cubic boron nitride base high pressure sintered material for cutting tool |
JPS607022B2 (en) * | 1982-08-31 | 1985-02-21 | 三菱マテリアル株式会社 | Cubic boron nitride-based ultra-high pressure sintered material for cutting tools |
JPS6023181B2 (en) * | 1982-10-20 | 1985-06-06 | 三菱マテリアル株式会社 | Cubic boron nitride-based ultra-high pressure sintered material for cutting tools |
JPS5974254A (en) * | 1982-10-20 | 1984-04-26 | Mitsubishi Metal Corp | Material based on cubic boron nitride sintered under superhigh pressure for cutting tool |
JPS60187659A (en) * | 1984-12-25 | 1985-09-25 | Mitsubishi Metal Corp | Cubic boron nitride-base ultrahigh-pressure sintered material for cutting tool |
JPS6056783B2 (en) * | 1984-12-25 | 1985-12-11 | 三菱マテリアル株式会社 | Cubic boron nitride-based ultra-high pressure sintered material for cutting tools |
JPS6267174A (en) * | 1985-09-19 | 1987-03-26 | Sumitomo Electric Ind Ltd | Production of hard carbon film coated sintered hard alloy |
JPS62174380A (en) * | 1986-01-27 | 1987-07-31 | Mitsubishi Metal Corp | Surface coated sintered hard alloy member for cutting tool |
JPS6360280A (en) * | 1986-08-29 | 1988-03-16 | Mitsubishi Metal Corp | Production of surface-coated tungsten carbide-base sintered hard alloy |
WO1991003820A1 (en) * | 1989-09-01 | 1991-03-21 | Eev Limited | Transmission lines |
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