ATE395747T1 - Drahtloses kommunikationssystem unter verwendung von zweiten harmonischen oberflachenwellentechniken - Google Patents

Drahtloses kommunikationssystem unter verwendung von zweiten harmonischen oberflachenwellentechniken

Info

Publication number
ATE395747T1
ATE395747T1 AT01113311T AT01113311T ATE395747T1 AT E395747 T1 ATE395747 T1 AT E395747T1 AT 01113311 T AT01113311 T AT 01113311T AT 01113311 T AT01113311 T AT 01113311T AT E395747 T1 ATE395747 T1 AT E395747T1
Authority
AT
Austria
Prior art keywords
saw
idts
frequency
harmonic
idt
Prior art date
Application number
AT01113311T
Other languages
English (en)
Inventor
Peter J Edmonson
Colin K Campbell
Original Assignee
Research In Motion 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 Research In Motion Ltd filed Critical Research In Motion Ltd
Application granted granted Critical
Publication of ATE395747T1 publication Critical patent/ATE395747T1/de

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
    • H03H9/46—Filters
    • H03H9/64—Filters using surface acoustic waves
    • H03H9/6406—Filters characterised by a particular frequency characteristic
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/74—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
    • G01S13/75—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems using transponders powered from received waves, e.g. using passive transponders, or using passive reflectors
    • G01S13/751—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems using transponders powered from received waves, e.g. using passive transponders, or using passive reflectors wherein the responder or reflector radiates a coded signal
    • G01S13/755—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems using transponders powered from received waves, e.g. using passive transponders, or using passive reflectors wherein the responder or reflector radiates a coded signal using delay lines, e.g. acoustic delay lines
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/0023—Balance-unbalance or balance-balance networks
    • H03H9/0028—Balance-unbalance or balance-balance networks using surface acoustic wave devices
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/0023—Balance-unbalance or balance-balance networks
    • H03H9/0028—Balance-unbalance or balance-balance networks using surface acoustic wave devices
    • H03H9/0033—Balance-unbalance or balance-balance networks using surface acoustic wave devices having one acoustic track only
    • H03H9/0042—Balance-unbalance or balance-balance networks using surface acoustic wave devices having one acoustic track only the balanced terminals being on opposite sides of the track
AT01113311T 2000-06-02 2001-05-31 Drahtloses kommunikationssystem unter verwendung von zweiten harmonischen oberflachenwellentechniken ATE395747T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US20915200P 2000-06-02 2000-06-02

Publications (1)

Publication Number Publication Date
ATE395747T1 true ATE395747T1 (de) 2008-05-15

Family

ID=22777562

Family Applications (1)

Application Number Title Priority Date Filing Date
AT01113311T ATE395747T1 (de) 2000-06-02 2001-05-31 Drahtloses kommunikationssystem unter verwendung von zweiten harmonischen oberflachenwellentechniken

Country Status (5)

Country Link
US (6) US6825794B2 (de)
EP (1) EP1160975B1 (de)
AT (1) ATE395747T1 (de)
CA (1) CA2348723C (de)
DE (1) DE60133968D1 (de)

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KR102417610B1 (ko) 2016-03-03 2022-07-07 삼성전자주식회사 근거리 초고주파 레이더를 이용한 코드 판독 방법 및 장치
CN107464990B (zh) * 2016-06-06 2019-11-05 仁宝电脑工业股份有限公司 可调频天线装置
CN107769752A (zh) * 2017-11-17 2018-03-06 中电科技集团重庆声光电有限公司 一种多通道声表面滤波模块
CN111256280B (zh) * 2018-11-30 2021-09-24 广东美的制冷设备有限公司 运行控制方法及系统、压缩机和空调器
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Also Published As

Publication number Publication date
US20120094615A1 (en) 2012-04-19
CA2348723C (en) 2006-07-11
DE60133968D1 (de) 2008-06-26
EP1160975A2 (de) 2001-12-05
US20050059357A1 (en) 2005-03-17
US7747220B2 (en) 2010-06-29
US7292822B2 (en) 2007-11-06
US20100220772A1 (en) 2010-09-02
US6825794B2 (en) 2004-11-30
US8260204B2 (en) 2012-09-04
US8463185B2 (en) 2013-06-11
US8099048B2 (en) 2012-01-17
US20120294340A1 (en) 2012-11-22
US20080020709A1 (en) 2008-01-24
CA2348723A1 (en) 2001-12-02
EP1160975B1 (de) 2008-05-14
EP1160975A3 (de) 2002-02-20
US20010048386A1 (en) 2001-12-06

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