DE69114216T2 - Abstimmbares Bandpass Filter. - Google Patents

Abstimmbares Bandpass Filter.

Info

Publication number
DE69114216T2
DE69114216T2 DE69114216T DE69114216T DE69114216T2 DE 69114216 T2 DE69114216 T2 DE 69114216T2 DE 69114216 T DE69114216 T DE 69114216T DE 69114216 T DE69114216 T DE 69114216T DE 69114216 T2 DE69114216 T2 DE 69114216T2
Authority
DE
Germany
Prior art keywords
bandpass filter
tunable bandpass
tunable
filter
bandpass
Prior art date
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
DE69114216T
Other languages
English (en)
Other versions
DE69114216D1 (de
Inventor
Peter Sroka
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.)
Nokia Mobile Phones UK Ltd
Original Assignee
Nokia Mobile Phones UK 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=10680775&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE69114216(T2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Nokia Mobile Phones UK Ltd filed Critical Nokia Mobile Phones UK Ltd
Application granted granted Critical
Publication of DE69114216D1 publication Critical patent/DE69114216D1/de
Publication of DE69114216T2 publication Critical patent/DE69114216T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01—Frequency selective two-port networks
    • H03H7/12—Bandpass or bandstop filters with adjustable bandwidth and fixed centre frequency
    • 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
    • H01P1/201—Filters for transverse electromagnetic waves
    • H01P1/202—Coaxial filters
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01—Frequency selective two-port networks
    • H03H7/17—Structural details of sub-circuits of frequency selective networks
    • H03H7/1741—Comprising typical LC combinations, irrespective of presence and location of additional resistors
    • H03H7/1775—Parallel LC in shunt or branch path
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01—Frequency selective two-port networks
    • H03H7/17—Structural details of sub-circuits of frequency selective networks
    • H03H7/1741—Comprising typical LC combinations, irrespective of presence and location of additional resistors
    • H03H7/1791—Combined LC in shunt or branch path
DE69114216T 1990-08-16 1991-08-02 Abstimmbares Bandpass Filter. Expired - Fee Related DE69114216T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9018019A GB2247125B (en) 1990-08-16 1990-08-16 Tunable bandpass filter

Publications (2)

Publication Number Publication Date
DE69114216D1 DE69114216D1 (de) 1995-12-07
DE69114216T2 true DE69114216T2 (de) 1996-04-25

Family

ID=10680775

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69114216T Expired - Fee Related DE69114216T2 (de) 1990-08-16 1991-08-02 Abstimmbares Bandpass Filter.

Country Status (5)

Country Link
US (1) US5227748A (de)
EP (1) EP0472319B1 (de)
JP (1) JP3238167B2 (de)
DE (1) DE69114216T2 (de)
GB (1) GB2247125B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10202475A1 (de) * 2002-01-23 2003-08-07 Rohde & Schwarz Abstimmbares Filterelement und abstimmbares Bandpaßfilter

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FI95851C (fi) * 1993-09-10 1996-03-25 Lk Products Oy Siirtojohtoresonaattorin sähköinen taajuudensäätökytkentä sekä säädettävä suodatin
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JP2899210B2 (ja) * 1994-05-20 1999-06-02 国際電気株式会社 周波数帯域可変フィルタ
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JP3613156B2 (ja) * 2000-01-18 2005-01-26 株式会社村田製作所 誘電体フィルタ、アンテナ共用器及び通信機装置
JP3570375B2 (ja) * 2000-04-19 2004-09-29 株式会社村田製作所 周波数可変フィルタ、アンテナ共用器および通信機装置
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US7154440B2 (en) * 2001-04-11 2006-12-26 Kyocera Wireless Corp. Phase array antenna using a constant-gain phase shifter
US7394430B2 (en) * 2001-04-11 2008-07-01 Kyocera Wireless Corp. Wireless device reconfigurable radiation desensitivity bracket systems and methods
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US7164329B2 (en) 2001-04-11 2007-01-16 Kyocera Wireless Corp. Tunable phase shifer with a control signal generator responsive to DC offset in a mixed signal
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US7180467B2 (en) * 2002-02-12 2007-02-20 Kyocera Wireless Corp. System and method for dual-band antenna matching
US7176845B2 (en) * 2002-02-12 2007-02-13 Kyocera Wireless Corp. System and method for impedance matching an antenna to sub-bands in a communication band
US20040183626A1 (en) * 2003-02-05 2004-09-23 Qinghua Kang Electronically tunable block filter with tunable transmission zeros
US20050116797A1 (en) * 2003-02-05 2005-06-02 Khosro Shamsaifar Electronically tunable block filter
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US7720443B2 (en) 2003-06-02 2010-05-18 Kyocera Wireless Corp. System and method for filtering time division multiple access telephone communications
ES2237294B1 (es) * 2003-06-12 2006-10-16 Universitat Politecnica De Catalunya Filtro sintonizable para radiofrecuencias y microondas.
JP2005026799A (ja) * 2003-06-30 2005-01-27 Taiyo Yuden Co Ltd フィルタ回路および積層フィルタ
US7719392B2 (en) * 2003-10-20 2010-05-18 University Of Dayton Ferroelectric varactors suitable for capacitive shunt switching
EP1678780A1 (de) * 2003-10-20 2006-07-12 University Of Dayton Ferroelektrische varaktoren mit eignung zur kapazitiven shunt-umschaltung
US20070069264A1 (en) * 2003-10-20 2007-03-29 Guru Subramanyam Ferroelectric varactors suitable for capacitive shunt switching and wireless sensing
DE10353866A1 (de) * 2003-11-18 2005-07-14 Siemens Ag Verfahren zum Anpassen einer Durchlasscharakteristik eines Bandpassfilters sowie Bandpassfilter dafür
US7248845B2 (en) * 2004-07-09 2007-07-24 Kyocera Wireless Corp. Variable-loss transmitter and method of operation
EP2445107B1 (de) * 2004-12-09 2019-02-20 Wispry, Inc. Pol-nullstellen-elemente und zugehörige Systeme und Verfahren
JP4317877B2 (ja) * 2004-12-13 2009-08-19 パナソニック株式会社 フィルタの特性調整装置、及びその特性調整方法
JP4526394B2 (ja) * 2005-01-11 2010-08-18 株式会社豊田中央研究所 高周波スイッチ
US7548762B2 (en) * 2005-11-30 2009-06-16 Kyocera Corporation Method for tuning a GPS antenna matching network
JP5399075B2 (ja) * 2005-12-22 2014-01-29 エプコス アクチエンゲゼルシャフト 直列接続されたキャパシタを有するｍｅｍｓデバイス装置
US7583950B2 (en) 2006-10-05 2009-09-01 Harris Corporation High linearity tunable bandpass filter
US8289103B2 (en) 2006-11-20 2012-10-16 Panasonic Corporation Filter device having attenuation poles
GB0721361D0 (en) * 2007-10-30 2007-12-12 Radio Design Ltd Tunable filter
US20100096678A1 (en) * 2008-10-20 2010-04-22 University Of Dayton Nanostructured barium strontium titanate (bst) thin-film varactors on sapphire
US20100295634A1 (en) 2009-05-20 2010-11-25 Tamrat Akale Tunable bandpass filter
US8385867B2 (en) * 2009-06-29 2013-02-26 Silicon Laboratories Inc. Tracking filter for a television tuner
DE202011105662U1 (de) * 2011-09-14 2012-05-09 IAD Gesellschaft für Informatik, Automatisierung und Datenverarbeitung mbH Rekonfigurierbares Bandpassfilter auf Basis planarer Kammfilter mit Varaktordioden
US9760092B2 (en) 2012-03-16 2017-09-12 Waymo Llc Actively modifying a field of view of an autonomous vehicle in view of constraints
JP5672266B2 (ja) * 2012-05-28 2015-02-18 株式会社村田製作所 電子部品
US9000866B2 (en) 2012-06-26 2015-04-07 University Of Dayton Varactor shunt switches with parallel capacitor architecture
US9128177B2 (en) 2013-05-29 2015-09-08 Nokia Technologies Oy Band grouping combinations for tunable UMTS multi-band filters
KR102324960B1 (ko) 2015-06-25 2021-11-12 삼성전자 주식회사 통신 장치 및 이를 포함하는 전자 장치
US9905898B2 (en) * 2015-11-19 2018-02-27 Lark Engineering Digitally tunable coaxial resonator reflective band reject (notch) filter
JP7215080B2 (ja) * 2018-10-29 2023-01-31 日本電気株式会社 周波数可変フィルタ、結合回路、及び結合方法

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10202475A1 (de) * 2002-01-23 2003-08-07 Rohde & Schwarz Abstimmbares Filterelement und abstimmbares Bandpaßfilter
DE10202475B4 (de) * 2002-01-23 2010-11-18 Rohde & Schwarz Gmbh & Co. Kg Abstimmbares Filterelement und abstimmbares Bandpaßfilter

Also Published As

Publication number Publication date
JPH06343002A (ja) 1994-12-13
US5227748A (en) 1993-07-13
GB2247125B (en) 1995-01-11
EP0472319B1 (de) 1995-11-02
DE69114216D1 (de) 1995-12-07
EP0472319A1 (de) 1992-02-26
GB9018019D0 (en) 1990-10-03
GB2247125A (en) 1992-02-19
JP3238167B2 (ja) 2001-12-10

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee