GB1062187A - Ultrasonic devices and apparatus - Google Patents

Ultrasonic devices and apparatus

Info

Publication number
GB1062187A
GB1062187A GB36877/63A GB3687763A GB1062187A GB 1062187 A GB1062187 A GB 1062187A GB 36877/63 A GB36877/63 A GB 36877/63A GB 3687763 A GB3687763 A GB 3687763A GB 1062187 A GB1062187 A GB 1062187A
Authority
GB
United Kingdom
Prior art keywords
magnetic
transducer
crystal
gyromagnetic
delay
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
GB36877/63A
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
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 Western Electric Co Inc filed Critical Western Electric Co Inc
Publication of GB1062187A publication Critical patent/GB1062187A/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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/0302—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity characterised by unspecified or heterogeneous hardness or specially adapted for magnetic hardness transitions
    • H01F1/0311—Compounds
    • H01F1/0313—Oxidic compounds
    • H01F1/0315—Ferrites
    • 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
    • H03H9/13—Driving means, e.g. electrodes, coils for networks consisting of piezoelectric or electrostrictive materials
    • H03H9/133—Driving means, e.g. electrodes, coils for networks consisting of piezoelectric or electrostrictive materials for electromechanical delay lines or filters
    • 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
    • H03H9/36—Time-delay networks with non-adjustable delay time

Abstract

1,062,187. Electro-mechanical delay line. WESTERN ELECTRIC CO. Inc. Sept. 19, 1963 [Sept. 26, 1962], No. 36877/63. Heading H3U. An ultrasonic delay line for use at microwave frequencies comprises a magnetic crystal transducer (13) having substantial gyromagnetic properties mounted upon a non-magnetic delay crystal (12), the two materials having such similar crystal structures that at their interface they form a continuous crystal lattice. The transducer may be produced by growing a crystal of suitable magnetic material upon a face of the delay line material, e.g. magnetic yttrium iron garnet upon non-magnetic yttrium aluminuim or gallium garnet, or magnetic magnesium iron oxide upon magnesium aluminate. In the device illustrated, a D.C. field (H) is applied to the transducer and has a strength such that the gyromagnetic material (13) is biased into the neigh bourhood of ferro-magneticresonance, and input energy at microwave frequencies is applied by a coaxial line (15, 17) connected as illustrated to a conductive ring (16) surrounding the end of a rod (12) and the transducer (13). As a result of magneto-striction and gyromagnetic precession about the biasing field H, circularly polarized acoustic waves are excited in the layer (13) and transferred to the delay rod (12) and output transducer (14) &c.
GB36877/63A 1962-09-26 1963-09-19 Ultrasonic devices and apparatus Expired GB1062187A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US226381A US3307120A (en) 1962-09-26 1962-09-26 Ultrasonic wave device

Publications (1)

Publication Number Publication Date
GB1062187A true GB1062187A (en) 1967-03-15

Family

ID=22848690

Family Applications (1)

Application Number Title Priority Date Filing Date
GB36877/63A Expired GB1062187A (en) 1962-09-26 1963-09-19 Ultrasonic devices and apparatus

Country Status (4)

Country Link
US (1) US3307120A (en)
BE (1) BE637828A (en)
GB (1) GB1062187A (en)
NL (1) NL297704A (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3400340A (en) * 1964-08-04 1968-09-03 Bell Telephone Labor Inc Ultrasonic wave transmission devices
NL143392B (en) * 1965-04-17 1974-09-16 Philips Nv ULTRASONIC DELAYER.
US3504307A (en) * 1966-07-06 1970-03-31 Kennecott Copper Corp Thin sample ultrasonic delay line
US3428144A (en) * 1966-07-07 1969-02-18 Bell Telephone Labor Inc Elastic wave elements
US3526856A (en) * 1968-09-24 1970-09-01 Hazeltine Research Inc Electromagnetic coupling apparatus
US3530409A (en) * 1968-09-24 1970-09-22 Hazeltine Research Inc Two-port magnetoelastic delay line
NL153046B (en) * 1968-11-09 1977-04-15 Philips Nv ULTRASONIC DELAY LINE.
US3618134A (en) * 1970-01-12 1971-11-02 Sperry Rand Corp High-frequency ferrimagnetic delay device
BE758284A (en) * 1970-03-26 1971-04-01 Chu Associates SIGNAL PROCESSING PROCESS AND APPARATUS

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2571019A (en) * 1948-04-30 1951-10-09 Rca Corp Electrical coupling system for magnetostrictive elements
US2718637A (en) * 1951-07-27 1955-09-20 Rca Corp Radar moving target indication system
US2712638A (en) * 1951-09-18 1955-07-05 David L Arenberg Single-crystal ultrasonic solid delay lines using multiple reflections
US3037174A (en) * 1958-12-31 1962-05-29 Bell Telephone Labor Inc Microwave ultrasonic delay line
US3098204A (en) * 1961-04-24 1963-07-16 Joseph B Brauer Microwave delay line and method of fabrication

Also Published As

Publication number Publication date
US3307120A (en) 1967-02-28
BE637828A (en)
NL297704A (en)

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