GB1441602A - Surface wave filters or delay lines - Google Patents

Surface wave filters or delay lines

Info

Publication number
GB1441602A
GB1441602A GB3304873A GB3304873A GB1441602A GB 1441602 A GB1441602 A GB 1441602A GB 3304873 A GB3304873 A GB 3304873A GB 3304873 A GB3304873 A GB 3304873A GB 1441602 A GB1441602 A GB 1441602A
Authority
GB
United Kingdom
Prior art keywords
surface wave
delay lines
wave filters
filters
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
GB3304873A
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of GB1441602A publication Critical patent/GB1441602A/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
    • H03H9/02535—Details of surface acoustic wave devices
    • H03H9/02992—Details of bus bars, contact pads or other electrical connections for finger electrodes
    • 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
    • H03H9/02535—Details of surface acoustic wave devices
    • H03H9/02818—Means for compensation or elimination of undesirable effects
    • H03H9/02874—Means for compensation or elimination of undesirable effects of direct coupling between input and output 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
    • H03H9/02535—Details of surface acoustic wave devices
    • H03H9/02818—Means for compensation or elimination of undesirable effects
    • H03H9/02913—Measures for shielding against electromagnetic fields
GB3304873A 1972-07-18 1973-07-11 Surface wave filters or delay lines Expired GB1441602A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722235233 DE2235233C3 (en) 1972-07-18 1972-07-18 Filter or delay line based on the surface wave principle

Publications (1)

Publication Number Publication Date
GB1441602A true GB1441602A (en) 1976-07-07

Family

ID=5850962

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3304873A Expired GB1441602A (en) 1972-07-18 1973-07-11 Surface wave filters or delay lines

Country Status (7)

Country Link
AT (1) AT339957B (en)
BE (1) BE802498A (en)
DE (1) DE2235233C3 (en)
FR (1) FR2193289B1 (en)
GB (1) GB1441602A (en)
IT (1) IT993581B (en)
NL (1) NL7307898A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4672339A (en) * 1985-05-13 1987-06-09 Siemens Aktiengesellschaft Electric filter employing acoustic waves
EP1237275A2 (en) * 2001-03-01 2002-09-04 Murata Manufacturing Co., Ltd. Surface acoustic wave device and communications device
WO2011101314A1 (en) * 2010-02-22 2011-08-25 Epcos Ag Micro-acoustic filter having compensated cross-talk and method for compensation

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4296391A (en) 1977-10-28 1981-10-20 Hitachi, Ltd. Surface-acoustic-wave filter for channel selection system of television receiver
US4870312A (en) * 1987-02-19 1989-09-26 Hazeltine Corporation Surface wave device having anti-reflective shield

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3573673A (en) * 1969-01-08 1971-04-06 Zenith Radio Corp Acoustic surface wave filters

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4672339A (en) * 1985-05-13 1987-06-09 Siemens Aktiengesellschaft Electric filter employing acoustic waves
EP1237275A2 (en) * 2001-03-01 2002-09-04 Murata Manufacturing Co., Ltd. Surface acoustic wave device and communications device
EP1237275A3 (en) * 2001-03-01 2007-08-29 Murata Manufacturing Co., Ltd. Surface acoustic wave device and communications device
WO2011101314A1 (en) * 2010-02-22 2011-08-25 Epcos Ag Micro-acoustic filter having compensated cross-talk and method for compensation
CN102754340A (en) * 2010-02-22 2012-10-24 埃普科斯股份有限公司 Micro-acoustic filter having compensated cross-talk and method for compensation
JP2013520898A (en) * 2010-02-22 2013-06-06 エプコス アクチエンゲゼルシャフト Microacoustic filter with compensated crosstalk and method for compensation
CN102754340B (en) * 2010-02-22 2016-05-25 埃普科斯股份有限公司 The microphone acoustic filter of crosstalking with setoff and the method for compensating for
US9362884B2 (en) 2010-02-22 2016-06-07 Epcos Ag Micro-acoustic filter having compensated cross-talk and method for compensation

Also Published As

Publication number Publication date
ATA415573A (en) 1977-03-15
IT993581B (en) 1975-09-30
DE2235233C3 (en) 1978-03-02
FR2193289B1 (en) 1978-02-17
DE2235233A1 (en) 1974-01-31
FR2193289A1 (en) 1974-02-15
AT339957B (en) 1977-11-25
NL7307898A (en) 1974-01-22
BE802498A (en) 1973-11-16
DE2235233B2 (en) 1977-07-14

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees