GB1413486A - Oscillators including piezo electric surface wave delay devices - Google Patents

Oscillators including piezo electric surface wave delay devices

Info

Publication number
GB1413486A
GB1413486A GB1924972A GB1924972A GB1413486A GB 1413486 A GB1413486 A GB 1413486A GB 1924972 A GB1924972 A GB 1924972A GB 1924972 A GB1924972 A GB 1924972A GB 1413486 A GB1413486 A GB 1413486A
Authority
GB
United Kingdom
Prior art keywords
inductors
transducers
surface wave
plate
line
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
GB1924972A
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 GB1924972A priority Critical patent/GB1413486A/en
Publication of GB1413486A publication Critical patent/GB1413486A/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
    • H03H9/05—Holders; Supports
    • H03H9/0538—Constructional combinations of supports or holders with electromechanical or other electronic elements
    • H03H9/0542—Constructional combinations of supports or holders with electromechanical or other electronic elements consisting of a lateral arrangement
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/30—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator
    • H03B5/32—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator
    • H03B5/326—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator the resonator being an acoustic wave device, e.g. SAW or BAW device

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)

Abstract

1413486 Oscillators; frequency changers; delay lines MARCONI CO Ltd 29 Dec 1972 [26 April 1972] 19249/72 Headings H3F and H3U To alter the phase transfer characteristic of a surface wave delay line used in the feedback path of an amplifier to form an oscillator, and hence to vary the oscillator frequency, there is provided, either a thin film gold strip plate 4, Fig. 4, between input and output transducers 6, 7, on piezo substrate 5, of the line, or one, or two as shown, thin film spiral inductors 8, 9, Fig. 5 in series with an electrode of the transducers 6, 7. The phase transfer is adjusted by adjusting the width W of plate 4 by laser, electron beam or mechanical machining, the plate altering the wave velocity under it. Inductors, 8, 9 are adjusted by shorting out parts of turns using a wire bonding machine. The handpass characteristic of the line is displayed in Fig. 2 (not shown). Typical operating frequencies, inductance values, and phase shifts are given. Inductors 8, 9 are formed together with the transducers photolithographically.
GB1924972A 1972-04-26 1972-04-26 Oscillators including piezo electric surface wave delay devices Expired GB1413486A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1924972A GB1413486A (en) 1972-04-26 1972-04-26 Oscillators including piezo electric surface wave delay devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1924972A GB1413486A (en) 1972-04-26 1972-04-26 Oscillators including piezo electric surface wave delay devices

Publications (1)

Publication Number Publication Date
GB1413486A true GB1413486A (en) 1975-11-12

Family

ID=10126217

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1924972A Expired GB1413486A (en) 1972-04-26 1972-04-26 Oscillators including piezo electric surface wave delay devices

Country Status (1)

Country Link
GB (1) GB1413486A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2126034A (en) * 1982-07-02 1984-03-14 Clarion Co Ltd Surface acoustic wave device
GB2165411A (en) * 1984-10-09 1986-04-09 X Cyte Inc Surface acoustic wave passive transponder having amplitude and phase-modifying surface pads
US5986382A (en) 1997-08-18 1999-11-16 X-Cyte, Inc. Surface acoustic wave transponder configuration
US6060815A (en) 1997-08-18 2000-05-09 X-Cyte, Inc. Frequency mixing passive transponder
US6208062B1 (en) 1997-08-18 2001-03-27 X-Cyte, Inc. Surface acoustic wave transponder configuration

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2126034A (en) * 1982-07-02 1984-03-14 Clarion Co Ltd Surface acoustic wave device
GB2165411A (en) * 1984-10-09 1986-04-09 X Cyte Inc Surface acoustic wave passive transponder having amplitude and phase-modifying surface pads
US5986382A (en) 1997-08-18 1999-11-16 X-Cyte, Inc. Surface acoustic wave transponder configuration
US6060815A (en) 1997-08-18 2000-05-09 X-Cyte, Inc. Frequency mixing passive transponder
US6208062B1 (en) 1997-08-18 2001-03-27 X-Cyte, Inc. Surface acoustic wave transponder configuration
US6611224B1 (en) 1997-08-18 2003-08-26 X-Cyte, Inc. Backscatter transponder interrogation device

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee