GB1481591A - Surface acoustic wave amplifier - Google Patents

Surface acoustic wave amplifier

Info

Publication number
GB1481591A
GB1481591A GB2475/76A GB247576A GB1481591A GB 1481591 A GB1481591 A GB 1481591A GB 2475/76 A GB2475/76 A GB 2475/76A GB 247576 A GB247576 A GB 247576A GB 1481591 A GB1481591 A GB 1481591A
Authority
GB
United Kingdom
Prior art keywords
plate
amplified
waves
parallel
pump 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.)
Expired
Application number
GB2475/76A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB2475/76A priority Critical patent/GB1481591A/en
Publication of GB1481591A publication Critical patent/GB1481591A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F99/00—Subject matter not provided for in other groups of this subclass

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)

Abstract

1481591 Surface wave amplifiers STANDARD TELEPHONES & CABLES Ltd 22 Jan 1976 02475/76 Heading H3U Surface waves propagating between transducers 2, 3 or a piezoelectric substrate 1 are amplified by means of a plate 4 of monocrystalline magnetic material, e.g. gallium-doped Y.I.G., parallel to and spaced from substrate 1. First means, e.g. a permanent magnet 7, are provided to apply a polarizing magnetic field to plate 4 aligned with the direction of wave propagation, and second means 6 are provided for applying a pump frequency to plate 4 so that spin waves induced in plate 4 by magnetoelastic coupling with the surface waves are amplified, the amplified waves subsequently being coupled back into the surface wave propagation path. As shown, means 6 are constituted by thin metallic film spiral inductors connected in parallel to a source of pump frequency. The device may be used as a delay line, a biphase coded matched filter, or a convolver.
GB2475/76A 1976-01-22 1976-01-22 Surface acoustic wave amplifier Expired GB1481591A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2475/76A GB1481591A (en) 1976-01-22 1976-01-22 Surface acoustic wave amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2475/76A GB1481591A (en) 1976-01-22 1976-01-22 Surface acoustic wave amplifier

Publications (1)

Publication Number Publication Date
GB1481591A true GB1481591A (en) 1977-08-03

Family

ID=9740228

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2475/76A Expired GB1481591A (en) 1976-01-22 1976-01-22 Surface acoustic wave amplifier

Country Status (1)

Country Link
GB (1) GB1481591A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1548702A1 (en) * 2003-12-24 2005-06-29 Interuniversitair Microelektronica Centrum Vzw Method for ultra-fast controlling of a magnetic cell and related devices
EP2312749A1 (en) * 2009-10-15 2011-04-20 Alcatel Lucent RF power amplifier with spectrally grouped nanosized switches
EP2437393A1 (en) * 2010-10-01 2012-04-04 Alcatel Lucent Power control for an RF power amplifier with spectrally grouped nanosized switches
EP2509217A1 (en) * 2011-04-07 2012-10-10 Alcatel Lucent Method for amplifying an RF signal and tuneable RF power amplifier device

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1548702A1 (en) * 2003-12-24 2005-06-29 Interuniversitair Microelektronica Centrum Vzw Method for ultra-fast controlling of a magnetic cell and related devices
WO2005064590A1 (en) * 2003-12-24 2005-07-14 Interuniversitair Microelektronica Centrum Vzw Method for ultra-fast controlling of a magnetic cell and related devices
US7638922B2 (en) 2003-12-24 2009-12-29 Interuniversitair Microelektronica Centrum (IM Method for ultra-fast controlling of a magnetic cell and related devices
US7791250B2 (en) 2003-12-24 2010-09-07 Imec Method for ultra-fast controlling of a magnetic cell and related devices
US7859349B2 (en) 2003-12-24 2010-12-28 Imec Fully integrated tuneable spin torque device for generating an oscillating signal and method for tuning such apparatus
WO2011045193A1 (en) * 2009-10-15 2011-04-21 Alcatel Lucent Rf power amplifier with spectrally grouped nanosized switches
EP2312749A1 (en) * 2009-10-15 2011-04-20 Alcatel Lucent RF power amplifier with spectrally grouped nanosized switches
CN102577108A (en) * 2009-10-15 2012-07-11 阿尔卡特朗讯 RF power amplifier with spectrally grouped nanosized switches
KR101356599B1 (en) 2009-10-15 2014-02-03 알까뗄 루슨트 Rf power amplifier with spectrally grouped nanosized switches
US8674762B2 (en) 2009-10-15 2014-03-18 Alcatel Lucent RF power amplifier with spectrally grouped nanosized switches
CN102577108B (en) * 2009-10-15 2015-07-01 阿尔卡特朗讯 RF power amplifier with spectrally grouped nanosized switches
EP2437393A1 (en) * 2010-10-01 2012-04-04 Alcatel Lucent Power control for an RF power amplifier with spectrally grouped nanosized switches
EP2509217A1 (en) * 2011-04-07 2012-10-10 Alcatel Lucent Method for amplifying an RF signal and tuneable RF power amplifier device

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