GB1255292A - Improvements in or relating to piezoelectric transducers - Google Patents

Improvements in or relating to piezoelectric transducers

Info

Publication number
GB1255292A
GB1255292A GB532570A GB532570A GB1255292A GB 1255292 A GB1255292 A GB 1255292A GB 532570 A GB532570 A GB 532570A GB 532570 A GB532570 A GB 532570A GB 1255292 A GB1255292 A GB 1255292A
Authority
GB
United Kingdom
Prior art keywords
sets
layer
grating
separated
electrode spacing
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
Application number
GB532570A
Inventor
Wilfrid Sinden Mortley
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.)
BAE Systems Electronics Ltd
Original Assignee
Marconi 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 Marconi Co Ltd filed Critical Marconi Co Ltd
Priority to GB532570A priority Critical patent/GB1255292A/en
Priority to NL7100685A priority patent/NL7100685A/xx
Priority to FR7103006A priority patent/FR2077140A5/fr
Priority to DE19712104399 priority patent/DE2104399A1/en
Publication of GB1255292A publication Critical patent/GB1255292A/en
Expired legal-status Critical Current

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
    • H03H9/02—Details
    • H03H9/125—Driving means, e.g. electrodes, coils
    • H03H9/145—Driving means, e.g. electrodes, coils for networks using surface acoustic waves
    • H03H9/14502—Surface acoustic wave [SAW] transducers for a particular purpose
    • H03H9/14508—Polyphase SAW transducers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/06—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
    • B06B1/0607—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using multiple elements
    • B06B1/0622—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using multiple elements on one surface
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/125—Driving means, e.g. electrodes, coils
    • H03H9/145—Driving means, e.g. electrodes, coils for networks using surface acoustic waves
    • H03H9/14502—Surface acoustic wave [SAW] transducers for a particular purpose
    • H03H9/14505—Unidirectional SAW transducers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/125—Driving means, e.g. electrodes, coils
    • H03H9/145—Driving means, e.g. electrodes, coils for networks using surface acoustic waves
    • H03H9/14538—Formation

Abstract

1,255,292. Piezoelectric transducers. MARCONI CO. Ltd. 10 Nov., 1970 [4 Feb., 1970], No. 5325/70. Heading H3U. A transducer for a delay line comprises two sets 1, 2 of interleaved electrodes forming an interdigital line grating, the sets being separated from each other by a layer 4 of insulating material, e.g. aluminium oxide, silicon oxide or silicon nitride applied by radio frequency sputtering. The interposed layer 4 prevents short circuits between the sets 1, 2 resulting from manufacturing difficulties when the electrode spacing is extremely small. If the electrode spacing is ten microns the layer 4 may be one micron thick. The grating is formed on a piezoelectric body 3 and covered by an insulating layer 5. The grating may comprise more than two sets of interleaved electrodes and in another embodiment (Figs. 3, 4, not shown) there are three superposed sets separated from each other by two insulating layers.
GB532570A 1970-02-04 1970-02-04 Improvements in or relating to piezoelectric transducers Expired GB1255292A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB532570A GB1255292A (en) 1970-02-04 1970-02-04 Improvements in or relating to piezoelectric transducers
NL7100685A NL7100685A (en) 1970-02-04 1971-01-19
FR7103006A FR2077140A5 (en) 1970-02-04 1971-01-29
DE19712104399 DE2104399A1 (en) 1970-02-04 1971-01-30 Piezoelectric converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB532570A GB1255292A (en) 1970-02-04 1970-02-04 Improvements in or relating to piezoelectric transducers

Publications (1)

Publication Number Publication Date
GB1255292A true GB1255292A (en) 1971-12-01

Family

ID=9793998

Family Applications (1)

Application Number Title Priority Date Filing Date
GB532570A Expired GB1255292A (en) 1970-02-04 1970-02-04 Improvements in or relating to piezoelectric transducers

Country Status (4)

Country Link
DE (1) DE2104399A1 (en)
FR (1) FR2077140A5 (en)
GB (1) GB1255292A (en)
NL (1) NL7100685A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4162466A (en) * 1977-09-28 1979-07-24 University Of Illinois Foundation Surface acoustic wave resonator
US9541330B2 (en) 2013-07-17 2017-01-10 Whirlpool Corporation Method for drying articles
US10006163B2 (en) 2015-03-23 2018-06-26 Whirlpool Corporation Apparatus for drying articles
US10024899B2 (en) 2013-10-16 2018-07-17 Whirlpool Corporation Method and apparatus for detecting an energized e-field
US10246813B2 (en) 2013-12-09 2019-04-02 Whirlpool Corporation Method for drying articles
US10323881B2 (en) 2013-10-02 2019-06-18 Whirlpool Corporation Method and apparatus for drying articles
US10533798B2 (en) 2013-08-14 2020-01-14 Whirlpool Corporation Appliance for drying articles
US10837702B2 (en) 2013-08-23 2020-11-17 Whirlpool Corporation Appliance for drying articles

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4162466A (en) * 1977-09-28 1979-07-24 University Of Illinois Foundation Surface acoustic wave resonator
US9541330B2 (en) 2013-07-17 2017-01-10 Whirlpool Corporation Method for drying articles
US11655583B2 (en) 2013-07-17 2023-05-23 Whirlpool Corporation Method for drying articles
US10184718B2 (en) 2013-07-17 2019-01-22 Whirlpool Corporation Method for drying articles
US10816265B2 (en) 2013-07-17 2020-10-27 Whirlpool Corporation Method for drying articles
US10533798B2 (en) 2013-08-14 2020-01-14 Whirlpool Corporation Appliance for drying articles
US10823502B2 (en) 2013-08-14 2020-11-03 Whirlpool Corporation Appliance for drying articles
US11459696B2 (en) 2013-08-23 2022-10-04 Whirlpool Corporation Appliance for drying articles
US10837702B2 (en) 2013-08-23 2020-11-17 Whirlpool Corporation Appliance for drying articles
US10323881B2 (en) 2013-10-02 2019-06-18 Whirlpool Corporation Method and apparatus for drying articles
US11029088B2 (en) 2013-10-02 2021-06-08 Whirlpool Corporation Method and apparatus for drying articles
US11686037B2 (en) 2013-10-02 2023-06-27 Whirlpool Corporation Method and apparatus for drying articles
US10816586B2 (en) 2013-10-16 2020-10-27 Whirlpool Corporation Method and apparatus for detecting an energized e-field
US10024899B2 (en) 2013-10-16 2018-07-17 Whirlpool Corporation Method and apparatus for detecting an energized e-field
US11519130B2 (en) 2013-10-16 2022-12-06 Whirlpool Corporation Method and apparatus for detecting an energized e-field
US10246813B2 (en) 2013-12-09 2019-04-02 Whirlpool Corporation Method for drying articles
US10655270B2 (en) 2015-03-23 2020-05-19 Whirlpool Corporation Apparatus for drying articles
US11078619B2 (en) 2015-03-23 2021-08-03 Whirlpool Corporation Apparatus for drying articles
US10006163B2 (en) 2015-03-23 2018-06-26 Whirlpool Corporation Apparatus for drying articles
US11692298B2 (en) 2015-03-23 2023-07-04 Whirlpool Corporation Method of drying articles

Also Published As

Publication number Publication date
NL7100685A (en) 1971-08-06
FR2077140A5 (en) 1971-10-15
DE2104399A1 (en) 1971-08-12

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