DE3781479D1 - Fallenfilter. - Google Patents

Fallenfilter.

Info

Publication number: DE3781479D1
Authority: DE; Germany
Prior art keywords: trap filter; trap; filter
Prior art date: 1986-07-29
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 - Fee Related

Application number

DE8787302122T

Other languages

English (en)

Other versions

DE3781479T2 (de

Inventor

Peter V Wright

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.)

RF Monolithics Inc

Original Assignee

RF Monolithics Inc

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.)

1986-07-29

Filing date

1987-03-12

Publication date

1992-10-08

1987-03-12 Application filed by RF Monolithics Inc filed Critical RF Monolithics Inc

1992-10-08 Application granted granted Critical

1992-10-08 Publication of DE3781479D1 publication Critical patent/DE3781479D1/de

1993-01-07 Publication of DE3781479T2 publication Critical patent/DE3781479T2/de

2007-03-13 Anticipated expiration legal-status Critical

Status Expired - Fee Related 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
- H03H9/46—Filters
- H03H9/64—Filters using surface acoustic waves
- H03H9/6406—Filters characterised by a particular frequency characteristic
- H03H9/6409—SAW notch filters

Landscapes

Physics & Mathematics (AREA)
Acoustics & Sound (AREA)
Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
Filters And Equalizers (AREA)

DE8787302122T 1986-07-29 1987-03-12 Fallenfilter. Expired - Fee Related DE3781479T2 (de)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US06/891,238 US4694266A (en)	1986-07-29	1986-07-29	Notch filter

Publications (2)

Publication Number	Publication Date
DE3781479D1 true DE3781479D1 (de)	1992-10-08
DE3781479T2 DE3781479T2 (de)	1993-01-07

Family

ID=25397842

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
DE8787302122T Expired - Fee Related DE3781479T2 (de)	1986-07-29	1987-03-12	Fallenfilter.

Country Status (4)

Country	Link
US (1)	US4694266A (de)
EP (1)	EP0255195B1 (de)
JP (1)	JPS63120509A (de)
DE (1)	DE3781479T2 (de)

Families Citing this family (35)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US5279762A (en) *	1985-04-27	1994-01-18	Merck Patent Gesellschaft Mit Beschrankter Haftung	Smectic liquid crystal phases
FR2607639B1 (fr) *	1986-11-28	1995-03-03	Thomson Csf	Rejecteur de bande a grande selectivite, et utilisation d'un tel rejecteur
JPH03249847A (ja) *	1990-02-27	1991-11-07	Nec Corp	変復調装置
US5028895A (en) *	1990-05-29	1991-07-02	Motorola, Inc.	Notch filter for reducing clock signal feedthrough effects in an acoustic charge transport device
FI88565C (fi) *	1990-07-06	1993-05-25	Lk Products Oy	Foerfarande foer att foerbaettra spaerrdaempning av ett radiofrekvensfilter
US5265267A (en) *	1991-08-29	1993-11-23	Motorola, Inc.	Integrated circuit including a surface acoustic wave transformer and a balanced mixer
USRE40036E1 (en)	1991-10-28	2008-01-29	Fujitsu Limited	Surface acoustic wave filter
JP2800905B2 (ja) *	1991-10-28	1998-09-21	富士通株式会社	弾性表面波フィルタ
DE4330438B4 (de) *	1992-09-09	2010-07-01	Hitachi, Ltd.	Oberflächenakustikwelleneinrichtung
FI93503C (fi) *	1993-03-03	1995-04-10	Lk Products Oy	Radiotaajuussuodatin
US5600287A (en) *	1994-02-03	1997-02-04	Motorola, Inc.	Acoustic wave filter with reduced bulk-wave scattering loss, ladder filter incorporating same and method
US5471178A (en) *	1994-02-03	1995-11-28	Motorola, Inc.	Ladder filter and method for producing conjugately matched impedance
US6201457B1 (en) *	1998-11-18	2001-03-13	Cts Corporation	Notch filter incorporating saw devices and a delay line
DE602005023895D1 (de)	2004-10-29	2010-11-11	Nortel Networks Ltd	Bandzurückweisungsfilter
JP4440749B2 (ja) *	2004-11-02	2010-03-24	ローム株式会社	画像読み取り装置
US7323955B2 (en) *	2005-06-06	2008-01-29	The United States Of America As Represented By The Secretary Of The Navy	Narrow-band absorptive bandstop filter with multiple signal paths
US8013690B2 (en) *	2008-05-22	2011-09-06	TeraSys Technologies LLC	Electronically tunable, absorptive, low-loss notch filter
US8305164B1 (en)	2009-06-09	2012-11-06	The United States Of America, As Represented By The Secretary Of The Navy	Frequency-agile frequency-selective variable attenuator
US8421554B2 (en) *	2009-10-01	2013-04-16	Ubidyne, Inc.	Filtering device for filtering RF signals and method for filtering RF signals
US8264298B2 (en) *	2009-10-01	2012-09-11	Unidyne, Inc.	Filtering device and a method for filtering a signal
US8339216B2 (en) *	2009-10-01	2012-12-25	Ubidyne, Inc.	Duplexer and method for separating a transmit signal and a receive signal
CN105103462A (zh)	2012-12-11	2015-11-25	南加利福尼亚大学	用于双工器和共存无线通信系统的无源泄露抵消网络
WO2015089091A1 (en)	2013-12-10	2015-06-18	University Of Southern California	Enhancing isolation and impedance matching in hybrid-based cancellation networks and duplexers
WO2015123668A1 (en)	2014-02-14	2015-08-20	University Of Southern California	Hybrid-based cancellation in presence of antenna mismatch
WO2015123586A1 (en)	2014-02-14	2015-08-20	University Of Southern California	Reflection and hybrid reflection filters
US9871543B2 (en)	2014-02-19	2018-01-16	University Of Southern California	Miniature acoustic resonator-based filters and duplexers with cancellation methodology
US9912326B2 (en)	2015-09-08	2018-03-06	Abtum Inc.	Method for tuning feed-forward canceller
US9866201B2 (en)	2015-09-08	2018-01-09	Abtum Inc.	All-acoustic duplexers using directional couplers
US10581650B2 (en)	2015-09-08	2020-03-03	Qorvo Us, Inc.	Enhancing isolation in radio frequency multiplexers
US9762416B2 (en)	2015-09-08	2017-09-12	Abtum Inc.	Reflection coefficient reader
US9755668B2 (en)	2015-09-30	2017-09-05	Abtum Inc.	Radio frequency complex reflection coefficient reader
US10038458B2 (en)	2015-10-06	2018-07-31	Abtum Inc.	Reflection-based radio-frequency multiplexers
KR102527018B1 (ko)	2015-10-12	2023-04-27	압툼 인크.	하이브리드 커플러 기반 무선 주파수 멀티플렉서
KR102419926B1 (ko)	2016-09-21	2022-07-11	코르보 유에스, 인크.	하이브리드 기반 무선 주파수 듀플렉서 및 멀티플렉서의 향상된 아이솔레이션
US10951197B2 (en)	2019-06-27	2021-03-16	Sequans Communications S.A.	On-chip balun

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3241092A (en) *	1963-04-10	1966-03-15	Murata Manufacturing Co	Hybrid ceramic filters having two-terminal piezoelectric resonator in shunt with three-terminal piezoelectric resonator to improve harmonic rejection
GB1445782A (en) *	1974-03-05	1976-08-11	Standard Telephones Cables Ltd	Surface acoustic wave filter device
US4126837A (en) *	1974-07-01	1978-11-21	Nippon Telegraph And Telephone Public Corporation	Impedance element and band-rejection filter using the same
US4166258A (en) *	1974-08-29	1979-08-28	International Business Machines Corporation	Thin-film integrated circuit with tank circuit characteristics and applications to thin-film filters and oscillators
US4327340A (en) *	1978-09-19	1982-04-27	Bell Telephone Laboratories Incorporated	Surface wave resonator cascade
US4577168A (en) *	1984-12-03	1986-03-18	R. F. Monolithics, Inc.	Notch filter
US4599587A (en) *	1984-12-03	1986-07-08	R. F. Monolithics, Inc.	Impedance element

1986
- 1986-07-29 US US06/891,238 patent/US4694266A/en not_active Expired - Lifetime
1987
- 1987-03-12 DE DE8787302122T patent/DE3781479T2/de not_active Expired - Fee Related
- 1987-03-12 EP EP87302122A patent/EP0255195B1/de not_active Expired
- 1987-07-29 JP JP62187894A patent/JPS63120509A/ja active Pending

Also Published As

Publication number	Publication date
US4694266A (en)	1987-09-15
EP0255195B1 (de)	1992-09-02
DE3781479T2 (de)	1993-01-07
EP0255195A3 (en)	1989-03-15
JPS63120509A (ja)	1988-05-24
EP0255195A2 (de)	1988-02-03

Legal Events

Date	Code	Title	Description
1993-09-30	8364	No opposition during term of opposition
2000-05-11	8339	Ceased/non-payment of the annual fee

Publication	Publication Date	Title
DE3781479D1 (de)	1992-10-08	Fallenfilter.
FI873137L (fi)	1988-01-19	Filter foer rengoering av vattenledningsvatten.
DE3789494D1 (de)	1994-05-05	Filterzusammenbau.
DE3866096D1 (de)	1991-12-12	Antiemboliefilter.
DE3780392D1 (de)	1992-08-20	Anschwemmfilter.
DE3852888D1 (de)	1995-03-09	Filteranordnung.
DE3784593D1 (de)	1993-04-15	Filterelement.
DE3770137D1 (de)	1991-06-20	Filtervorrichtung.
IT8721069A0 (it)	1987-06-26	Disposizione di filtro.
DE3850990D1 (de)	1994-09-15	Filterelement.
DE3763929D1 (de)	1990-08-30	Filtercigarette.
DE3779412D1 (de)	1992-07-02	Filtermembranen.
DE3773361D1 (de)	1991-10-31	Filteranordnung.
FI871562L (fi)	1987-12-11	Filterkapsel foer andningsskyddsmasker.
DE3783398D1 (de)	1993-02-18	Filteranlage.
DE3776631D1 (de)	1992-03-19	Filteranordnung.
FI880627A0 (fi)	1988-02-11	Filter foer crt-bildskaerm.
FI886040L (fi)	1988-12-30	Skivfilter.
DE3772337D1 (de)	1991-09-26	Filteranordnung.
FI873534A7 (fi)	1988-02-26	Cigarrettfilter.
DE3785841D1 (de)	1993-06-17	Schlammfilter.
DE3766842D1 (de)	1991-02-07	Adaptives filter.
DE3787309D1 (de)	1993-10-14	Filteranlage.
FI883061L (fi)	1988-12-26	Filterpaose foer filtersektion.
FI891851L (fi)	1990-10-19	Rengoerings-/avskiljningsapparat foer filter i vaot- och torrsugare.