JPS5467790A - Elastic surface wave phase shifter - Google Patents
Elastic surface wave phase shifterInfo
- Publication number
- JPS5467790A JPS5467790A JP13443477A JP13443477A JPS5467790A JP S5467790 A JPS5467790 A JP S5467790A JP 13443477 A JP13443477 A JP 13443477A JP 13443477 A JP13443477 A JP 13443477A JP S5467790 A JPS5467790 A JP S5467790A
- Authority
- JP
- Japan
- Prior art keywords
- strip electrodes
- surface wave
- elastic surface
- pitch
- lambda
- 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
- H03H9/66—Phase shifters
- H03H9/68—Phase shifters using surface acoustic waves
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
Abstract
PURPOSE:To improve propagation efficiency by providing plural parallel strip electrodes to the propagation path on a piezoelectric substrate and making the pitch thereof odd times of 1/4 the wavelength of the central frequency. CONSTITUTION:If the pitch of strip electrodes 11 is made lambda/4 with respect to the wavelength lambda of the central frequency and elastic surface wave 1 is made to respective reflected waves 2, 3 for the strip electrodes 111, 112, then the phase difference of both reflected waves is equal to the going and returning of the pitch spacing, it becomes lambda/2 and the waves are mutually negated. Hence, the relations between the respective strip electrodes and the waveforms of the elastic surface wave are indicated by the relative positions of the upper part of the respective strip electrodes if (+), (-) are let to be the maximum levels of the waveforms and (0) to be 0 level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13443477A JPS5467790A (en) | 1977-11-09 | 1977-11-09 | Elastic surface wave phase shifter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13443477A JPS5467790A (en) | 1977-11-09 | 1977-11-09 | Elastic surface wave phase shifter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5467790A true JPS5467790A (en) | 1979-05-31 |
Family
ID=15128273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13443477A Pending JPS5467790A (en) | 1977-11-09 | 1977-11-09 | Elastic surface wave phase shifter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5467790A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63215108A (en) * | 1987-02-19 | 1988-09-07 | ヘーゼルタイン コーポレーション | Surface elastic wave device |
| JP2015141165A (en) * | 2014-01-30 | 2015-08-03 | 日本無線株式会社 | surface acoustic wave sensor and measuring device |
| WO2024143104A1 (en) * | 2022-12-27 | 2024-07-04 | 株式会社村田製作所 | Elastic wave device, reception equipment, and communication equipment |
-
1977
- 1977-11-09 JP JP13443477A patent/JPS5467790A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63215108A (en) * | 1987-02-19 | 1988-09-07 | ヘーゼルタイン コーポレーション | Surface elastic wave device |
| JP2015141165A (en) * | 2014-01-30 | 2015-08-03 | 日本無線株式会社 | surface acoustic wave sensor and measuring device |
| WO2024143104A1 (en) * | 2022-12-27 | 2024-07-04 | 株式会社村田製作所 | Elastic wave device, reception equipment, and communication equipment |
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