CA936250A - Electromechanical frequency selective devices - Google Patents

Electromechanical frequency selective devices

Info

Publication number
CA936250A
CA936250A CA131577A CA131577A CA936250A CA 936250 A CA936250 A CA 936250A CA 131577 A CA131577 A CA 131577A CA 131577 A CA131577 A CA 131577A CA 936250 A CA936250 A CA 936250A
Authority
CA
Canada
Prior art keywords
frequency selective
selective devices
electromechanical frequency
electromechanical
devices
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
CA131577A
Other languages
English (en)
Other versions
CA131577S (en
Inventor
S. Palfreeman John
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of CA936250A publication Critical patent/CA936250A/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 elements; Electromechanical resonators
    • H03H9/74—Multiple-port networks for connecting several sources or loads, working on the same frequency or frequency band, to a common load or source
    • H03H9/76—Networks using surface acoustic waves
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H11/00—Networks using active elements
    • H03H11/02—Multiple-port networks
    • H03H11/04—Frequency selective two-port networks
    • H03H11/12—Frequency selective two-port networks using amplifiers with feedback
    • H03H11/1208—Frequency selective two-port networks using amplifiers with feedback comprising an electromechanical resonator
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
    • H03H9/46—Filters
    • H03H9/64—Filters using surface acoustic waves
    • H03H9/6403—Programmable filters

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
CA131577A 1971-01-05 1972-01-04 Electromechanical frequency selective devices Expired CA936250A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB43971A GB1372052A (en) 1971-01-05 1971-01-05 Electromechanical frequency selective devices

Publications (1)

Publication Number Publication Date
CA936250A true CA936250A (en) 1973-10-30

Family

ID=9704360

Family Applications (1)

Application Number Title Priority Date Filing Date
CA131577A Expired CA936250A (en) 1971-01-05 1972-01-04 Electromechanical frequency selective devices

Country Status (6)

Country Link
US (1) US3754192A (enExample)
CA (1) CA936250A (enExample)
DE (1) DE2163876A1 (enExample)
FR (1) FR2121247A5 (enExample)
GB (1) GB1372052A (enExample)
NL (1) NL7200004A (enExample)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3831116A (en) * 1973-04-09 1974-08-20 Raytheon Co Surface acoustic wave filter
NL7611558A (nl) * 1976-02-19 1978-04-21 Expert Nv Aandrijving voor roterende trommel.
FR2430063A2 (fr) * 1978-06-29 1980-01-25 Thomson Csf Dispositif acoustique a memoire, pour la correlation notamment, de deux signaux haute frequence, procede de realisation du reseau de diodes utilise dans un tel dispositif et correlateur acoustique a memoire comportant un tel dispositif
EP0012306B1 (de) * 1978-12-15 1985-05-22 Siemens-Albis Aktiengesellschaft Mehrkanalige Verstärkereinrichtung mit einem Verstärker für zeitlich verschachtelte Schwingungspakete
SU805918A1 (ru) * 1979-09-28 1982-03-30 Ордена Трудового Красного Знамени Институт Радиотехники И Электроники Ан Ссср Преобразователь поверхностных акустических волн
US4315228A (en) * 1980-07-03 1982-02-09 Westinghouse Electric Corp. Multiple co-surface acoustic wave filters
CA1271817A (en) * 1986-07-16 1990-07-17 Hiromi Yatsuda Surface elastic wave filter
DE3709692A1 (de) * 1987-03-25 1988-10-06 Siemens Ag Oberflaechenwellen-filteranordnung mit reduziertem kapazitivem und insbesondere induktivem uebersprechen
JP2944287B2 (ja) * 1991-12-27 1999-08-30 日本電気株式会社 弾性表面波フィルタ
US5365207A (en) * 1992-12-31 1994-11-15 Motorola, Inc. Multi-bandwidth saw filter
US5491670A (en) * 1993-01-21 1996-02-13 Weber; T. Jerome System and method for sonic positioning
GB2296614B (en) * 1994-12-23 1999-09-15 Advanced Saw Prod Sa Saw filter
US11848663B2 (en) * 2018-07-27 2023-12-19 Frec'n'sys Resonant cavity surface acoustic wave (SAW) filters

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3648081A (en) * 1970-06-30 1972-03-07 Ibm Piezoelectric acoustic surface wave device utilizing an amorphous semiconductive sensing material

Also Published As

Publication number Publication date
DE2163876A1 (de) 1972-07-27
FR2121247A5 (enExample) 1972-08-18
NL7200004A (enExample) 1972-07-07
US3754192A (en) 1973-08-21
GB1372052A (en) 1974-10-30

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