NO962110L - Hybrid narrowband filter - Google Patents

Hybrid narrowband filter

Info

Publication number
NO962110L
NO962110L NO962110A NO962110A NO962110L NO 962110 L NO962110 L NO 962110L NO 962110 A NO962110 A NO 962110A NO 962110 A NO962110 A NO 962110A NO 962110 L NO962110 L NO 962110L
Authority
NO
Norway
Prior art keywords
network
impedance
filter
hybrid
characteristic admittance
Prior art date
Application number
NO962110A
Other languages
Norwegian (no)
Other versions
NO962110D0 (en
Inventor
John David Rhodes
Philip David Sleigh
Original Assignee
Filtronic Ltd
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 Filtronic Ltd filed Critical Filtronic Ltd
Publication of NO962110D0 publication Critical patent/NO962110D0/en
Publication of NO962110L publication Critical patent/NO962110L/en

Links

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

Landscapes

  • Control Of Motors That Do Not Use Commutators (AREA)

Abstract

Hybridsmalbåndsfilter innbefattende et impedansinverternettverk forbundet over et to- portfilternettverk. I den enkleste form innbefatter impedansinverternettverket impedansinvertere av vesentlig -J2 karakteristisk admittans forbundet mellom inngangs- og utgangsportene over hvilke to-portfilternettverket er forbundet og impedansinvertere av hovedsakelig enhetlig karakteristisk admittans, som sammenkobler -J2 karakteristisk admittansimpedansinvertere ved deres respektive ender. To-portfilternettverket kan være flere serielt forbundne resonatorer og er forbundet over utgangsportene til impedansinverternettverket. Hybridsmalbåndsfilteret kan være dannet i et svitsjet hybridsmalbåndsfilter ved å anordne en svitsj mellom et tilliggende par av resonatorer i filternettverket.Hybrid template band filter including an impedance inverter network connected over a two-port filter network. In the simplest form, the impedance inverter network includes impedance inverters of substantially -J2 characteristic admittance connected between the input and output ports over which the two-port filter network is connected and impedance inverters of substantially uniform characteristic admittance which interconnect -J2 characteristic admittance impedance inverters. The two-port filter network may be several serially connected resonators and connected across the output ports of the impedance inverter network. The hybrid template band filter can be formed in a switched hybrid template band filter by providing a switch between an adjacent pair of resonators in the filter network.

NO962110A 1993-11-24 1996-05-23 Hybrid narrowband filter NO962110L (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9324149A GB2284311B (en) 1993-11-24 1993-11-24 Hybrid notch filter
PCT/GB1994/002582 WO1995015018A1 (en) 1993-11-24 1994-11-24 Hybrid notch filter

Publications (2)

Publication Number Publication Date
NO962110D0 NO962110D0 (en) 1996-05-23
NO962110L true NO962110L (en) 1996-07-02

Family

ID=10745616

Family Applications (1)

Application Number Title Priority Date Filing Date
NO962110A NO962110L (en) 1993-11-24 1996-05-23 Hybrid narrowband filter

Country Status (6)

Country Link
EP (1) EP0730784A1 (en)
CA (1) CA2176928A1 (en)
FI (1) FI962188A (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
GB2452934B (en) * 2007-09-19 2011-09-14 Isotek Electronics Ltd A tuneable bandpass filter
US7915977B2 (en) 2007-09-19 2011-03-29 Isotek Electronics Limited 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
EP2884578B1 (en) * 2009-11-02 2018-08-15 KMW Inc. Radio frequency filter
EP2932619A4 (en) 2012-12-11 2016-08-03 Univ Southern California Passive leakage cancellation networks for duplexers and coexisting wireless communication systems
CN105814737B (en) 2013-12-10 2019-06-04 南加利福尼亚大学 Enhance the isolation and impedance matching in hybrid cancellation network and duplexer
WO2015123586A1 (en) 2014-02-14 2015-08-20 University Of Southern California Reflection and hybrid reflection filters
US10615949B2 (en) 2014-02-14 2020-04-07 University Of Southern California Hybrid-based cancellation in presence of antenna mismatch
US9871543B2 (en) 2014-02-19 2018-01-16 University Of Southern California Miniature acoustic resonator-based filters and duplexers with cancellation methodology
US9866201B2 (en) 2015-09-08 2018-01-09 Abtum Inc. All-acoustic duplexers using directional couplers
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
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
US10476530B2 (en) 2015-10-12 2019-11-12 Qorvo Us, Inc. Hybrid-coupler-based radio frequency multiplexers
CN210201797U (en) 2016-09-21 2020-03-27 Qorvo美国公司 Radio frequency duplexer and tunable radio frequency duplexer with enhanced isolation

Family Cites Families (8)

* 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
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
US5173672A (en) * 1991-07-22 1992-12-22 Motorola, Inc. Dielectric block filter with included shielded transmission line inductors
US5202654A (en) * 1991-07-22 1993-04-13 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
GB2269705B (en) * 1992-08-15 1996-05-29 Racal Mesl Ltd Electrical filter

Also Published As

Publication number Publication date
GB2284311B (en) 1998-03-04
CA2176928A1 (en) 1995-06-01
FI962188A (en) 1996-07-15
WO1995015018A1 (en) 1995-06-01
FI962188A0 (en) 1996-05-23
GB2284311A (en) 1995-05-31
NO962110D0 (en) 1996-05-23
EP0730784A1 (en) 1996-09-11
GB9324149D0 (en) 1994-01-12

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