DE69521956T2 - Funkfrequenzfilter mit helikoidalen Resonatoren - Google Patents

Funkfrequenzfilter mit helikoidalen Resonatoren

Info

Publication number
DE69521956T2
DE69521956T2 DE69521956T DE69521956T DE69521956T2 DE 69521956 T2 DE69521956 T2 DE 69521956T2 DE 69521956 T DE69521956 T DE 69521956T DE 69521956 T DE69521956 T DE 69521956T DE 69521956 T2 DE69521956 T2 DE 69521956T2
Authority
DE
Germany
Prior art keywords
helicoidal
resonators
radio frequency
frequency filter
filter
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
DE69521956T
Other languages
English (en)
Other versions
DE69521956D1 (de
Inventor
Erkki Niiranen
Jari Pelkonen
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.)
Powerwave Comtek Oy
Original Assignee
Filtronic LK Oy
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 LK Oy filed Critical Filtronic LK Oy
Application granted granted Critical
Publication of DE69521956D1 publication Critical patent/DE69521956D1/de
Publication of DE69521956T2 publication Critical patent/DE69521956T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • H01P1/201—Filters for transverse electromagnetic waves
    • H01P1/205—Comb or interdigital filters; Cascaded coaxial cavities

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Filters And Equalizers (AREA)
DE69521956T 1994-10-07 1995-10-06 Funkfrequenzfilter mit helikoidalen Resonatoren Expired - Fee Related DE69521956T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI944701A FI96998C (fi) 1994-10-07 1994-10-07 Helix-resonaattoreita käsittävä radiotaajuussuodatin

Publications (2)

Publication Number Publication Date
DE69521956D1 DE69521956D1 (de) 2001-09-06
DE69521956T2 true DE69521956T2 (de) 2002-04-04

Family

ID=8541535

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69521956T Expired - Fee Related DE69521956T2 (de) 1994-10-07 1995-10-06 Funkfrequenzfilter mit helikoidalen Resonatoren

Country Status (7)

Country Link
US (1) US5689221A (de)
EP (1) EP0706230B1 (de)
JP (1) JPH08181505A (de)
AU (1) AU701521B2 (de)
CA (1) CA2158378A1 (de)
DE (1) DE69521956T2 (de)
FI (1) FI96998C (de)

Families Citing this family (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0828306A3 (de) * 1996-09-03 2000-03-22 Lk-Products Oy Filter mit angepassten Impedanzen
GB0006409D0 (en) * 2000-03-16 2000-05-03 Cryosystems Electrical filter
FI115331B (fi) * 2000-09-22 2005-04-15 Filtronic Comtek Oy Ylipäästösuodatin
DE10123369A1 (de) * 2001-05-14 2002-12-05 Infineon Technologies Ag Filteranordnung für, symmetrische und unsymmetrische Leitungssysteme
CN1989652B (zh) 2004-06-28 2013-03-13 脉冲芬兰有限公司 天线部件
FI20055420A0 (fi) 2005-07-25 2005-07-25 Lk Products Oy Säädettävä monikaista antenni
FI119009B (fi) 2005-10-03 2008-06-13 Pulse Finland Oy Monikaistainen antennijärjestelmä
FI118782B (fi) 2005-10-14 2008-03-14 Pulse Finland Oy Säädettävä antenni
FI119577B (fi) * 2005-11-24 2008-12-31 Pulse Finland Oy Monikaistainen antennikomponentti
US8618990B2 (en) 2011-04-13 2013-12-31 Pulse Finland Oy Wideband antenna and methods
US10211538B2 (en) 2006-12-28 2019-02-19 Pulse Finland Oy Directional antenna apparatus and methods
FI20075269A0 (fi) 2007-04-19 2007-04-19 Pulse Finland Oy Menetelmä ja järjestely antennin sovittamiseksi
FI120427B (fi) 2007-08-30 2009-10-15 Pulse Finland Oy Säädettävä monikaista-antenni
FI20096134A0 (fi) 2009-11-03 2009-11-03 Pulse Finland Oy Säädettävä antenni
FI20096251A0 (sv) 2009-11-27 2009-11-27 Pulse Finland Oy MIMO-antenn
US8847833B2 (en) 2009-12-29 2014-09-30 Pulse Finland Oy Loop resonator apparatus and methods for enhanced field control
FI20105158A (fi) 2010-02-18 2011-08-19 Pulse Finland Oy Kuorisäteilijällä varustettu antenni
US9406998B2 (en) 2010-04-21 2016-08-02 Pulse Finland Oy Distributed multiband antenna and methods
FI20115072A0 (fi) 2011-01-25 2011-01-25 Pulse Finland Oy Moniresonanssiantenni, -antennimoduuli ja radiolaite
US8648752B2 (en) 2011-02-11 2014-02-11 Pulse Finland Oy Chassis-excited antenna apparatus and methods
US9673507B2 (en) 2011-02-11 2017-06-06 Pulse Finland Oy Chassis-excited antenna apparatus and methods
US8866689B2 (en) 2011-07-07 2014-10-21 Pulse Finland Oy Multi-band antenna and methods for long term evolution wireless system
US9450291B2 (en) 2011-07-25 2016-09-20 Pulse Finland Oy Multiband slot loop antenna apparatus and methods
US9123990B2 (en) 2011-10-07 2015-09-01 Pulse Finland Oy Multi-feed antenna apparatus and methods
US9531058B2 (en) 2011-12-20 2016-12-27 Pulse Finland Oy Loosely-coupled radio antenna apparatus and methods
US9484619B2 (en) 2011-12-21 2016-11-01 Pulse Finland Oy Switchable diversity antenna apparatus and methods
US8988296B2 (en) 2012-04-04 2015-03-24 Pulse Finland Oy Compact polarized antenna and methods
US9979078B2 (en) 2012-10-25 2018-05-22 Pulse Finland Oy Modular cell antenna apparatus and methods
US10069209B2 (en) 2012-11-06 2018-09-04 Pulse Finland Oy Capacitively coupled antenna apparatus and methods
KR102028057B1 (ko) * 2013-01-22 2019-10-04 삼성전자주식회사 격리도가 향상된 공진기
US10079428B2 (en) 2013-03-11 2018-09-18 Pulse Finland Oy Coupled antenna structure and methods
US9647338B2 (en) 2013-03-11 2017-05-09 Pulse Finland Oy Coupled antenna structure and methods
US9634383B2 (en) 2013-06-26 2017-04-25 Pulse Finland Oy Galvanically separated non-interacting antenna sector apparatus and methods
US9680212B2 (en) 2013-11-20 2017-06-13 Pulse Finland Oy Capacitive grounding methods and apparatus for mobile devices
US9590308B2 (en) 2013-12-03 2017-03-07 Pulse Electronics, Inc. Reduced surface area antenna apparatus and mobile communications devices incorporating the same
US9350081B2 (en) 2014-01-14 2016-05-24 Pulse Finland Oy Switchable multi-radiator high band antenna apparatus
US9948002B2 (en) 2014-08-26 2018-04-17 Pulse Finland Oy Antenna apparatus with an integrated proximity sensor and methods
US9973228B2 (en) 2014-08-26 2018-05-15 Pulse Finland Oy Antenna apparatus with an integrated proximity sensor and methods
US9722308B2 (en) 2014-08-28 2017-08-01 Pulse Finland Oy Low passive intermodulation distributed antenna system for multiple-input multiple-output systems and methods of use
US9906260B2 (en) 2015-07-30 2018-02-27 Pulse Finland Oy Sensor-based closed loop antenna swapping apparatus and methods
CN115663430B (zh) * 2022-12-28 2023-03-21 成都世源频控技术股份有限公司 一种螺旋缠绕轴式微带滤波器及制备方法

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3621484A (en) * 1970-03-05 1971-11-16 Motorola Inc Helical resonator having variable capacitor which includes windings of reduced diameter as one plate thereof
GB1602770A (en) * 1977-06-03 1981-11-18 Matsushita Electric Ind Co Ltd Band pass filter
US4374370A (en) * 1981-03-30 1983-02-15 Motorola, Inc. Helical resonator filter
US4740765A (en) * 1985-09-30 1988-04-26 Murata Manufacturing Co., Ltd. Dielectric filter
US4816788A (en) * 1986-07-01 1989-03-28 Murata Manufacturing Co., Ltd. High frequency band-pass filter
US4800347A (en) * 1986-09-04 1989-01-24 Murata Manufacturing Co., Ltd. Dielectric filter
JPH0713284Y2 (ja) * 1987-09-21 1995-03-29 株式会社村田製作所 一体成形型誘電体フィルタの共振周波数調整構造
JPH01112801A (ja) * 1987-10-26 1989-05-01 Kokusai Electric Co Ltd 誘電体帯域フィルタ
FI78198C (fi) * 1987-11-20 1989-06-12 Lk Products Oy Oeverfoeringsledningsresonator.
FI80542C (fi) 1988-10-27 1990-06-11 Lk Products Oy Resonatorkonstruktion.
FI87405C (fi) 1990-02-07 1992-12-28 Lk Products Oy Hoegfrekvensfilter
US5432489A (en) * 1992-03-09 1995-07-11 Lk-Products Oy Filter with strip lines
FI91116C (fi) * 1992-04-21 1994-05-10 Lk Products Oy Helix-resonaattori

Also Published As

Publication number Publication date
CA2158378A1 (en) 1996-04-08
AU3298895A (en) 1996-04-18
FI944701A0 (fi) 1994-10-07
DE69521956D1 (de) 2001-09-06
US5689221A (en) 1997-11-18
EP0706230B1 (de) 2001-08-01
JPH08181505A (ja) 1996-07-12
EP0706230A1 (de) 1996-04-10
FI96998C (fi) 1996-09-25
AU701521B2 (en) 1999-01-28
FI96998B (fi) 1996-06-14
FI944701A (fi) 1996-04-08

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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