NL66164C - - Google Patents

Info

Publication number
NL66164C
NL66164C NL66164DA NL66164C NL 66164 C NL66164 C NL 66164C NL 66164D A NL66164D A NL 66164DA NL 66164 C NL66164 C NL 66164C
Authority
NL
Netherlands
Prior art keywords
arm
band
series
peaks
shunt
Prior art date
Application number
Other languages
English (en)
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 filed Critical
Application granted granted Critical
Publication of NL66164C publication Critical patent/NL66164C/xx

Links

Classifications

    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/0023Balance-unbalance or balance-balance networks
    • H03H9/0095Balance-unbalance or balance-balance networks using bulk acoustic wave devices
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/46Filters
    • H03H9/54Filters comprising resonators of piezoelectric or electrostrictive material
    • H03H9/542Filters comprising resonators of piezoelectric or electrostrictive material including passive elements
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/46Filters
    • H03H9/54Filters comprising resonators of piezoelectric or electrostrictive material
    • H03H9/58Multiple crystal filters
    • H03H9/60Electric coupling means therefor
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01Frequency selective two-port networks
    • H03H7/17Structural details of sub-circuits of frequency selective networks
    • H03H7/1708Comprising bridging elements, i.e. elements in a series path without own reference to ground and spanning branching nodes of another series path
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01Frequency selective two-port networks
    • H03H7/17Structural details of sub-circuits of frequency selective networks
    • H03H7/1741Comprising typical LC combinations, irrespective of presence and location of additional resistors
    • H03H7/1775Parallel LC in shunt or branch path

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
  • Filters And Equalizers (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
NL66164D 1938-07-28 1939-07-27 NL66164C (xx)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US221721A US2248776A (en) 1938-07-28 1938-07-28 Wave filter
US232067A US2199921A (en) 1938-07-28 1938-09-20 Wave filter

Publications (1)

Publication Number Publication Date
NL66164C true NL66164C (xx) 1950-03-15

Family

ID=27361364

Family Applications (1)

Application Number Title Priority Date Filing Date
NL66164D NL66164C (xx) 1938-07-28 1939-07-27

Country Status (7)

Country Link
US (2) US2248776A (xx)
BE (1) BE435676A (xx)
CH (1) CH215766A (xx)
DE (1) DE742179C (xx)
FR (1) FR858308A (xx)
GB (1) GB531662A (xx)
NL (1) NL66164C (xx)

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3179906A (en) * 1965-04-20 By-pass netwoems when
FR861831A (fr) * 1939-08-08 1941-02-18 Materiel Telephonique Filtres d'ondes électriques
US2485863A (en) * 1946-01-05 1949-10-25 Western Electric Co Method of and apparatus for making electrical measurements
DE1223900B (de) * 1954-03-10 1966-09-01 Siemens Ag Aus mehreren, Resonanzkreise enthaltenden Filtergliedern bestehendes Bandpassfilter relativ schmalen Durchlassbereiches
NL112778C (xx) * 1955-05-16
US2929031A (en) * 1957-02-06 1960-03-15 Hermes Electronics Co Intermediate band width crystal filter
US2988714A (en) * 1957-09-12 1961-06-13 Gen Electric Piezoelectric filter network
BE622704A (xx) * 1961-09-22
BE622703A (xx) * 1961-09-22
US3396327A (en) * 1961-12-27 1968-08-06 Toyotsushinki Kabushiki Kaisha Thickness shear vibration type, crystal electromechanical filter
US3564463A (en) * 1966-04-11 1971-02-16 Bell Telephone Labor Inc Monolithic piezoelectric filter having mass loaded electrodes for resonation regions acoustically coupled together
US3697903A (en) * 1968-05-17 1972-10-10 Clevite Corp Equal-resonator piezoelectric ladder filters
BE758421A (fr) * 1969-11-06 1971-05-04 Automatic Elect Lab Filtre passe-bande a cristal polylithique, presentant des frequences polaires d'attenuation dans la bande d'arret inferieure
US3613031A (en) * 1969-12-15 1971-10-12 Hughes Aircraft Co Crystal ladder network having improved passband attenuation characteristic
DE2001433C3 (de) * 1970-01-07 1983-06-01 Matsushita Electric Industrial Co., Ltd., Kadoma, Osaka Bandpaßfilter
US3686592A (en) * 1970-10-08 1972-08-22 Us Army Monolithic coupled crystal resonator filter having cross impedance adjusting means
US3704433A (en) * 1971-05-27 1972-11-28 Bell Telephone Labor Inc Band-elimination filter
JPS5249618Y2 (xx) * 1972-10-21 1977-11-11
CA1041186A (en) * 1976-04-28 1978-10-24 Henry K. Yee Monolithic crystal filters
CA1101945A (en) * 1977-04-15 1981-05-26 Henry K. Yee Single side band monolithic crystal filter
US4163959A (en) * 1977-12-15 1979-08-07 Motorola, Inc. Monolithic crystal filter device
US4207535A (en) * 1978-03-20 1980-06-10 Motorola, Inc. Two-pole, fixed-tuned monolithic crystal frequency discriminator
US4246554A (en) * 1978-12-11 1981-01-20 E-Systems, Inc. Inductorless monolithic crystal filter network
US4281300A (en) * 1979-11-08 1981-07-28 Motorola, Inc. Multi-pole crystal filter and method of improving the frequency response
US5051711A (en) * 1989-04-27 1991-09-24 Ten-Tec, Inc. Variable bandwidth crystal filter with varactor diodes
US5030934A (en) * 1989-07-05 1991-07-09 Motorola, Inc. Crystal notch filter comprising discrete quartz crystals coupled to a trimmable RC bridging network
US5703058A (en) * 1995-01-27 1997-12-30 Emory University Compositions containing 5-fluoro-2',3'-didehydro-2',3'-dideoxycytidine or a mono-, di-, or triphosphate thereof and a second antiviral agent
JP4073177B2 (ja) * 2001-05-11 2008-04-09 株式会社村田製作所 圧電フィルタ

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1967250A (en) * 1931-09-19 1934-07-24 Bell Telephone Labor Inc Wave filter

Also Published As

Publication number Publication date
BE435676A (xx) 1939-08-31
GB531662A (en) 1941-01-08
US2199921A (en) 1940-05-07
CH215766A (de) 1941-07-15
DE742179C (de) 1943-12-11
FR858308A (fr) 1940-11-22
US2248776A (en) 1941-07-08

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