GB2284311B - Hybrid notch filter - Google Patents

Hybrid notch filter

Info

Publication number: GB2284311B
Authority: GB; United Kingdom
Prior art keywords: notch filter; hybrid notch; hybrid; filter; notch
Prior art date: 1993-11-24
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

GB9324149A

Other versions

GB2284311A (en

GB9324149D0 (en

Inventor

John David Rhodes

Philip David Sleigh

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.)

Filtronic PLC

Original Assignee

Filtronic PLC

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.)

1993-11-24

Filing date

1993-11-24

Publication date

1998-03-04

1993-11-24 Application filed by Filtronic PLC filed Critical Filtronic PLC

1993-11-24 Priority to GB9324149A priority Critical patent/GB2284311B/en

1994-01-12 Publication of GB9324149D0 publication Critical patent/GB9324149D0/en

1994-11-24 Priority to PCT/GB1994/002582 priority patent/WO1995015018A1/en

1994-11-24 Priority to FI962188A priority patent/FI962188A7/en

1994-11-24 Priority to EP95901546A priority patent/EP0730784A1/en

1994-11-24 Priority to CA002176928A priority patent/CA2176928A1/en

1995-05-31 Publication of GB2284311A publication Critical patent/GB2284311A/en

1996-05-23 Priority to NO962110A priority patent/NO962110L/en

1998-03-04 Application granted granted Critical

1998-03-04 Publication of GB2284311B publication Critical patent/GB2284311B/en

2013-11-24 Anticipated expiration legal-status Critical

Status Expired - Fee Related legal-status Critical Current

Classifications

- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters

GB9324149A 1993-11-24 1993-11-24 Hybrid notch filter Expired - Fee Related GB2284311B (en)

Priority Applications (6)

Application Number	Priority Date	Filing Date	Title
GB9324149A GB2284311B (en)	1993-11-24	1993-11-24	Hybrid notch filter
CA002176928A CA2176928A1 (en)	1993-11-24	1994-11-24	Hybrid notch filter
FI962188A FI962188A7 (en)	1993-11-24	1994-11-24	Hybrid band-stop filter
EP95901546A EP0730784A1 (en)	1993-11-24	1994-11-24	Hybrid notch filter
PCT/GB1994/002582 WO1995015018A1 (en)	1993-11-24	1994-11-24	Hybrid notch filter
NO962110A NO962110L (en)	1993-11-24	1996-05-23	Hybrid narrowband filter

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
GB9324149A GB2284311B (en)	1993-11-24	1993-11-24	Hybrid notch filter

Publications (3)

Publication Number	Publication Date
GB9324149D0 GB9324149D0 (en)	1994-01-12
GB2284311A GB2284311A (en)	1995-05-31
GB2284311B true GB2284311B (en)	1998-03-04

Family

ID=10745616

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
GB9324149A Expired - Fee Related GB2284311B (en)	1993-11-24	1993-11-24	Hybrid notch filter

Country Status (6)

Country	Link
EP (1)	EP0730784A1 (en)
CA (1)	CA2176928A1 (en)
FI (1)	FI962188A7 (en)
GB (1)	GB2284311B (en)
NO (1)	NO962110L (en)
WO (1)	WO1995015018A1 (en)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB9625416D0 (en)	1996-12-06	1997-01-22	Filtronic Comtek	Microwave resonator
US6169760B1 (en) *	1998-03-19	2001-01-02	Hughes Electronics Corporation	Fast, highly accurate frequency measurement technique
DE10304524A1 (en) *	2003-02-04	2004-08-12	Tesat-Spacecom Gmbh & Co.Kg	Band-pass filter topology e.g. for satellite communication transponders, has coupling to first resonator and decoupling from resonator lying opposite this in rectangular structure
US7915977B2 (en)	2007-09-19	2011-03-29	Isotek Electronics Limited	Tuneable bandpass filter
GB2452934B (en) *	2007-09-19	2011-09-14	Isotek Electronics Ltd	A tuneable bandpass 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
JP5493002B2 (en) *	2009-11-02	2014-05-14	ケーエムダブリュ・インコーポレーテッド	Radio frequency filter
JP6214673B2 (en)	2012-12-11	2017-10-18	ユニバーシティオブサザンカリフォルニア	Passive leak canceling network for duplexer and coexisting wireless communication system
WO2015089091A1 (en)	2013-12-10	2015-06-18	University Of Southern California	Enhancing isolation and impedance matching in hybrid-based cancellation networks and duplexers
US9843302B2 (en)	2014-02-14	2017-12-12	University Of Southern California	Reflection and hybrid reflection filters
WO2015123668A1 (en)	2014-02-14	2015-08-20	University Of Southern California	Hybrid-based cancellation in presence of antenna mismatch
WO2015127097A1 (en)	2014-02-19	2015-08-27	University Of Southern California	Miniature acoustic resonator-based filters and duplexers
US9762416B2 (en)	2015-09-08	2017-09-12	Abtum Inc.	Reflection coefficient reader
US9912326B2 (en)	2015-09-08	2018-03-06	Abtum Inc.	Method for tuning feed-forward canceller
US10581650B2 (en)	2015-09-08	2020-03-03	Qorvo Us, Inc.	Enhancing isolation in radio frequency multiplexers
US9866201B2 (en)	2015-09-08	2018-01-09	Abtum Inc.	All-acoustic duplexers using directional couplers
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 (en)	2015-10-12	2023-04-27	압툼 인크.	Hybrid coupler based radio frequency multiplexer
KR102419926B1 (en)	2016-09-21	2022-07-11	코르보 유에스, 인크.	Improved Isolation of Hybrid-Based Radio Frequency Duplexers and Multiplexers

Citations (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4100504A (en) *	1977-06-20	1978-07-11	Harris Corporation	Band rejection filter having integrated impedance inverter-tune cavity configuration
WO1993002483A1 (en) *	1991-07-22	1993-02-04	Motorola, Inc.	Dielectric block filter with included shielded transmission line inductors
WO1993002484A1 (en) *	1991-07-22	1993-02-04	Motorola, Inc.	Multi-stage monolithic ceramic bandstop filter with isolated filter stages
US5221912A (en) *	1991-10-24	1993-06-22	Keane William J	YIG tuned band reject filter for 2-18 GHz with full one-quarter wavelength RF coupling loops
GB2269705A (en) *	1992-08-15	1994-02-16	Racal Mesl Ltd	Electrical filter

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
SU1363332A1 (en) *	1986-04-08	1987-12-30	Предприятие П/Я Г-4173	Frequency-selecting vhf-device
US4963945A (en) *	1989-04-07	1990-10-16	Plessey Electronic Systems Corp.	Band rejection filtering arrangement
US5055808A (en) *	1990-09-21	1991-10-08	Motorola, Inc.	Bandwidth agile, dielectrically loaded resonator filter

1993
- 1993-11-24 GB GB9324149A patent/GB2284311B/en not_active Expired - Fee Related
1994
- 1994-11-24 CA CA002176928A patent/CA2176928A1/en not_active Abandoned
- 1994-11-24 EP EP95901546A patent/EP0730784A1/en not_active Withdrawn
- 1994-11-24 WO PCT/GB1994/002582 patent/WO1995015018A1/en not_active Ceased
- 1994-11-24 FI FI962188A patent/FI962188A7/en not_active Application Discontinuation
1996
- 1996-05-23 NO NO962110A patent/NO962110L/en unknown

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4100504A (en) *	1977-06-20	1978-07-11	Harris Corporation	Band rejection filter having integrated impedance inverter-tune cavity configuration
WO1993002483A1 (en) *	1991-07-22	1993-02-04	Motorola, Inc.	Dielectric block filter with included shielded transmission line inductors
WO1993002484A1 (en) *	1991-07-22	1993-02-04	Motorola, Inc.	Multi-stage monolithic ceramic bandstop filter with isolated filter stages
US5221912A (en) *	1991-10-24	1993-06-22	Keane William J	YIG tuned band reject filter for 2-18 GHz with full one-quarter wavelength RF coupling loops
GB2269705A (en) *	1992-08-15	1994-02-16	Racal Mesl Ltd	Electrical filter

Also Published As

Publication number	Publication date
GB2284311A (en)	1995-05-31
FI962188L (en)	1996-07-15
NO962110D0 (en)	1996-05-23
WO1995015018A1 (en)	1995-06-01
NO962110L (en)	1996-07-02
FI962188A0 (en)	1996-05-23
FI962188A7 (en)	1996-07-15
EP0730784A1 (en)	1996-09-11
GB9324149D0 (en)	1994-01-12
CA2176928A1 (en)	1995-06-01

Publication	Publication Date	Title
GB2282336B (en)	1997-08-13	Fuel filter
GB2284311B (en)	1998-03-04	Hybrid notch filter
GB9414956D0 (en)	1994-09-14	Filter
DE59401349D1 (en)	1997-01-30	Filter
GB2279890B (en)	1997-01-29	Filter
DE69400999D1 (en)	1997-01-09	Filter
ZA935518B (en)	1994-02-24	Improved filter
GB2276993B (en)	1996-08-07	Filter
GB2277217B (en)	1996-07-10	Electrical filter
GB2276835B (en)	1995-09-20	Filter
GB2283926B (en)	1998-01-14	Filter
GB2282764B (en)	1997-04-30	Filter
GB2282022B (en)	1997-02-05	Filters
AU1466P (en)	2000-03-13	Sunglow Anigozanthos hybrid
GB9315437D0 (en)	1993-09-08	Filter
BG98157A (en)	1995-05-31	Frenel filter
KR940025913U (en)	1994-12-08	filter
GB9322481D0 (en)	1993-12-22	Filter ii
GB9309403D0 (en)	1993-06-23	Filters
GB9322344D0 (en)	1993-12-15	Filters
GB9314037D0 (en)	1993-08-18	Filters
PL55540Y1 (en)	1997-10-31	Fuel filter
PL55539Y1 (en)	1997-10-31	Fuel filter
GB9307142D0 (en)	1993-05-26	Filter elements
GB9216028D0 (en)	1992-09-09	Filter

Legal Events

Date	Code	Title	Description
1998-08-19	732E	Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
1999-07-14	PCNP	Patent ceased through non-payment of renewal fee	Effective date: 19981124