FR2078805A5 - - Google Patents
Info
- Publication number
- FR2078805A5 FR2078805A5 FR7105635A FR7105635A FR2078805A5 FR 2078805 A5 FR2078805 A5 FR 2078805A5 FR 7105635 A FR7105635 A FR 7105635A FR 7105635 A FR7105635 A FR 7105635A FR 2078805 A5 FR2078805 A5 FR 2078805A5
- Authority
- FR
- France
- 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
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
- H03H9/54—Filters comprising resonators of piezoelectric or electrostrictive material
- H03H9/545—Filters comprising resonators of piezoelectric or electrostrictive material including active elements
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
- Networks Using Active Elements (AREA)
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US86536569A | 1969-10-10 | 1969-10-10 | |
US1279970A | 1970-02-19 | 1970-02-19 | |
US4949870A | 1970-06-24 | 1970-06-24 | |
US9872270A | 1970-12-16 | 1970-12-16 | |
JP16080277A JPS5489460A (en) | 1969-10-10 | 1977-12-26 | Piezooelectric porcelain filter |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2078805A5 true FR2078805A5 (fr) | 1971-11-05 |
Family
ID=27528245
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7036600A Expired FR2065275A5 (fr) | 1969-10-10 | 1970-10-09 | |
FR7105635A Expired FR2078805A5 (fr) | 1969-10-10 | 1971-02-18 |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7036600A Expired FR2065275A5 (fr) | 1969-10-10 | 1970-10-09 |
Country Status (7)
Country | Link |
---|---|
US (4) | US3633134A (fr) |
JP (1) | JPS5489460A (fr) |
DE (1) | DE2104779C3 (fr) |
FR (2) | FR2065275A5 (fr) |
GB (2) | GB1332141A (fr) |
NL (1) | NL174314C (fr) |
SE (1) | SE373995B (fr) |
Families Citing this family (52)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3633134A (en) * | 1969-10-10 | 1972-01-04 | Motorola Inc | Crystal band pass filter circuit |
JPS4944648A (fr) * | 1972-08-31 | 1974-04-26 | ||
JPS5523489B2 (fr) * | 1972-12-18 | 1980-06-23 | ||
JPS5438840Y2 (fr) * | 1973-11-16 | 1979-11-17 | ||
US4035732A (en) * | 1974-10-03 | 1977-07-12 | The United States Of America As Represented By The Secretary Of The Army | High dynamic range receiver front end mixer requiring low local oscillator injection power |
US4013982A (en) * | 1974-10-22 | 1977-03-22 | International Standard Electric Corporation | Piezoelectric crystal unit |
DE2610183A1 (de) * | 1975-03-12 | 1976-09-23 | Murata Manufacturing Co | Wellenfilter mit akustischer oberflaechenleitung |
US3983518A (en) * | 1975-04-24 | 1976-09-28 | De Statt Der Nederlanden, Te Dezen Vertegenwoordigd Door De Directeur-Generaal Der Posterijen, Telegrafie En Telefonie | Filter chain |
US4045753A (en) * | 1975-05-09 | 1977-08-30 | Toko, Inc. | Ceramic filter |
US4135158A (en) * | 1975-06-02 | 1979-01-16 | Motorola, Inc. | Universal automotive electronic radio |
US4006437A (en) * | 1975-06-27 | 1977-02-01 | Bell Telephone Laboratories, Incorporated | Frequency filter |
US4103264A (en) * | 1976-01-30 | 1978-07-25 | Vernitron Corporation | Wave filter and process for making same |
DE2715202A1 (de) * | 1977-04-05 | 1978-10-19 | Draloric Electronic | Piezoelektrisches filter und verfahren zu seiner herstellung |
US4149102A (en) * | 1977-10-31 | 1979-04-10 | Motorola, Inc. | Piezoelectric monolithic crystal element having improved response |
US4287493A (en) * | 1979-01-25 | 1981-09-01 | Murata Manufacturing Co., Ltd. | Piezoelectric filter |
US4365181A (en) * | 1979-07-18 | 1982-12-21 | Murata Manufacturing Co., Ltd. | Piezoelectric vibrator with damping electrodes |
US4384229A (en) * | 1980-02-14 | 1983-05-17 | Nippon Electric Co., Ltd. | Temperature compensated piezoelectric ceramic resonator unit |
US4329666A (en) * | 1980-08-11 | 1982-05-11 | Motorola, Inc. | Two-pole monolithic crystal filter |
FR2491272B1 (fr) * | 1980-09-30 | 1987-11-27 | Clei Alain | Filtre piezoelectrique a resistances de charge integrees et procede de fabrication |
WO1982004167A1 (fr) * | 1981-05-18 | 1982-11-25 | Lewis C Spence | Filtre a bande passante et etage de gain |
NL8105147A (nl) * | 1981-11-13 | 1983-06-01 | Philips Nv | Fm-ontvanger voorzien van een ratiodetektor met siliciumdiodes. |
US4491761A (en) * | 1981-12-28 | 1985-01-01 | United Technologies Corporation | Planar piezoelectric deflector with arrays of alternate piezoelectric effect |
US4554678A (en) * | 1982-12-13 | 1985-11-19 | Honeywell Inc. | Wireless receiver having crystal filter at outputs of preamplifier |
US4516094A (en) * | 1983-12-23 | 1985-05-07 | Gte Laboratories Incorporated | Acoustic surface wave device |
DE3409927A1 (de) * | 1984-03-17 | 1985-09-26 | Ernst Leitz Wetzlar Gmbh, 6330 Wetzlar | Breitbandiges anpassungsnetzwerk |
JPH0656941B2 (ja) * | 1984-06-12 | 1994-07-27 | 株式会社村田製作所 | 群遅延特性改善ラダー型圧電フィルタ |
US4584499A (en) * | 1985-04-12 | 1986-04-22 | General Electric Company | Autoresonant piezoelectric transformer signal coupler |
US4906840A (en) * | 1988-01-27 | 1990-03-06 | The Board Of Trustees Of Leland Stanford Jr., University | Integrated scanning tunneling microscope |
US5065066A (en) * | 1989-07-19 | 1991-11-12 | Murata Mfg. Co., Ltd. | Piezoelectric resonator |
US5184043A (en) * | 1989-12-05 | 1993-02-02 | Murata Manufacturing Co., Ltd. | Piezoelectric resonator |
JPH03185908A (ja) * | 1989-12-14 | 1991-08-13 | Murata Mfg Co Ltd | トラップ回路 |
US5231327A (en) * | 1990-12-14 | 1993-07-27 | Tfr Technologies, Inc. | Optimized piezoelectric resonator-based networks |
GB9118297D0 (en) * | 1991-08-24 | 1991-10-09 | Motorola Gmbh | If crystal filter |
US5189593A (en) * | 1991-11-04 | 1993-02-23 | Motorola, Inc. | Integrated distributed resistive-capacitive network |
JP3125454B2 (ja) * | 1992-07-07 | 2001-01-15 | 株式会社村田製作所 | 3端子型圧電共振子 |
JPH0629774A (ja) * | 1992-07-07 | 1994-02-04 | Tdk Corp | 圧電セラミックフィルタ回路及び圧電セラミックフィルタ |
JP3094717B2 (ja) * | 1993-02-09 | 2000-10-03 | 株式会社村田製作所 | 圧電共振部品 |
JP2555926B2 (ja) * | 1993-04-28 | 1996-11-20 | 日本電気株式会社 | 中間周波増幅回路 |
KR0164660B1 (ko) * | 1994-02-23 | 1999-03-30 | 무라타 야스타카 | 압전부품 |
JPH07336189A (ja) * | 1994-06-09 | 1995-12-22 | Murata Mfg Co Ltd | 圧電フィルタ |
US5543756A (en) * | 1995-05-12 | 1996-08-06 | Hewlett-Packard Company | Combined crystal and LC filter |
JPH08335847A (ja) * | 1995-06-08 | 1996-12-17 | Murata Mfg Co Ltd | 厚みすべり振動型2重モードフィルタ |
US5661443A (en) * | 1996-03-13 | 1997-08-26 | Motorola, Inc. | Apparatus and method for an asymmetrical multi-pole monolithic crystal filter having improved phase response |
JPH10284985A (ja) * | 1997-04-01 | 1998-10-23 | Murata Mfg Co Ltd | 圧電フィルタ |
US6963155B1 (en) * | 1997-04-24 | 2005-11-08 | Mitsubishi Denki Kabushiki Kaisha | Film acoustic wave device, manufacturing method and circuit device |
JPH1141057A (ja) * | 1997-07-17 | 1999-02-12 | Murata Mfg Co Ltd | 圧電振動部品 |
US6150703A (en) * | 1998-06-29 | 2000-11-21 | Trw Inc. | Lateral mode suppression in semiconductor bulk acoustic resonator (SBAR) devices using tapered electrodes, and electrodes edge damping materials |
GB9911880D0 (en) | 1999-05-22 | 1999-07-21 | Marconi Electronic Syst Ltd | Amplifier circuit |
JP4073177B2 (ja) * | 2001-05-11 | 2008-04-09 | 株式会社村田製作所 | 圧電フィルタ |
US7194247B2 (en) * | 2001-09-26 | 2007-03-20 | Nokia Corporation | Dual-channel passband filtering system using acoustic resonators in lattice topology |
JP4723215B2 (ja) * | 2004-09-02 | 2011-07-13 | 富士通セミコンダクター株式会社 | カットオフ周波数の調整を可能にしたフィルタ回路 |
US20210360837A1 (en) * | 2020-05-13 | 2021-11-18 | Avx Corporation | Filter with Cover Layer and Shield Layer |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1969571A (en) * | 1933-03-17 | 1934-08-07 | Bell Telephone Labor Inc | Transmission network |
US2459019A (en) * | 1946-12-27 | 1949-01-11 | Bell Telephone Labor Inc | Piezoelectric crystal filter |
DE1416650A1 (de) * | 1959-03-24 | 1968-10-10 | Clevite Corp | Elektrisches Wellenfilter |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2308258A (en) * | 1939-10-05 | 1943-01-12 | Rca Corp | Band-pass filter circuits |
US2373431A (en) * | 1943-03-30 | 1945-04-10 | Bell Telephone Labor Inc | Electric wave filter |
GB860618A (en) * | 1958-11-24 | 1961-02-08 | Pye Ltd | Improvements in high frequency crystal filters |
US2959752A (en) * | 1959-03-25 | 1960-11-08 | Hycon Eastern Inc | Selective low distortion crystal filter |
US3222622A (en) * | 1962-08-14 | 1965-12-07 | Clevite Corp | Wave filter comprising piezoelectric wafer electroded to define a plurality of resonant regions independently operable without significant electro-mechanical interaction |
US3217265A (en) * | 1963-07-17 | 1965-11-09 | Clevite Corp | Electric wave filters utilizing piezoelectric resonators |
US3430163A (en) * | 1963-09-17 | 1969-02-25 | Singer Co | Bandpass filter having variable bandwidth but constant midband response and variable loading circuit for the same |
JPS44123Y1 (fr) * | 1965-05-01 | 1969-01-07 | ||
US3409787A (en) * | 1966-11-15 | 1968-11-05 | Air Force Usa | Piezoelectric transducer system |
US3633134A (en) * | 1969-10-10 | 1972-01-04 | Motorola Inc | Crystal band pass filter circuit |
US3593218A (en) * | 1970-03-05 | 1971-07-13 | Gen Motors Corp | Piezoelectric filter network |
JPS5161949A (ja) * | 1974-11-28 | 1976-05-28 | Sanyo Kikai Setsukei Kk | Jidokyokyusochi |
-
1970
- 1970-02-19 US US12799A patent/US3633134A/en not_active Expired - Lifetime
- 1970-06-24 US US49498A patent/US3676724A/en not_active Expired - Lifetime
- 1970-09-16 GB GB4433370A patent/GB1332141A/en not_active Expired
- 1970-09-21 NL NLAANVRAGE7013920,A patent/NL174314C/xx not_active IP Right Cessation
- 1970-10-09 FR FR7036600A patent/FR2065275A5/fr not_active Expired
- 1970-12-16 US US00098722A patent/US3727154A/en not_active Expired - Lifetime
-
1971
- 1971-02-02 DE DE2104779A patent/DE2104779C3/de not_active Expired
- 1971-02-11 SE SE7101700A patent/SE373995B/xx unknown
- 1971-02-18 FR FR7105635A patent/FR2078805A5/fr not_active Expired
- 1971-04-19 GB GB2177571A patent/GB1324921A/en not_active Expired
-
1977
- 1977-12-26 JP JP16080277A patent/JPS5489460A/ja active Pending
-
1978
- 1978-11-22 US US05/962,904 patent/US4196407A/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1969571A (en) * | 1933-03-17 | 1934-08-07 | Bell Telephone Labor Inc | Transmission network |
US2459019A (en) * | 1946-12-27 | 1949-01-11 | Bell Telephone Labor Inc | Piezoelectric crystal filter |
DE1416650A1 (de) * | 1959-03-24 | 1968-10-10 | Clevite Corp | Elektrisches Wellenfilter |
Non-Patent Citations (1)
Title |
---|
ELECTRO-TECHNOLOGY, vol. 76, no. 5, novembre 1965, pages 36-43, Londres, GB. * |
Also Published As
Publication number | Publication date |
---|---|
DE2104779B2 (de) | 1974-07-25 |
DE2104779C3 (de) | 1975-03-20 |
NL7013920A (fr) | 1971-04-14 |
FR2065275A5 (fr) | 1971-07-23 |
GB1332141A (en) | 1973-10-03 |
US3727154A (en) | 1973-04-10 |
GB1324921A (en) | 1973-07-25 |
NL174314C (nl) | 1984-05-16 |
US3676724A (en) | 1972-07-11 |
DE2046421B2 (de) | 1976-02-26 |
DE2104779A1 (de) | 1971-12-02 |
US4196407A (en) | 1980-04-01 |
JPS5489460A (en) | 1979-07-16 |
SE373995B (fr) | 1975-02-17 |
NL174314B (nl) | 1983-12-16 |
DE2046421A1 (de) | 1971-04-22 |
US3633134A (en) | 1972-01-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |