GB2273393A - Multi-passband,dielectric filter construction - Google Patents

Multi-passband,dielectric filter construction

Info

Publication number
GB2273393A
GB2273393A GB9400899A GB9400899A GB2273393A GB 2273393 A GB2273393 A GB 2273393A GB 9400899 A GB9400899 A GB 9400899A GB 9400899 A GB9400899 A GB 9400899A GB 2273393 A GB2273393 A GB 2273393A
Authority
GB
United Kingdom
Prior art keywords
filter
duplexer
resonators
dissimilar
geometric configuration
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.)
Granted
Application number
GB9400899A
Other versions
GB9400899D0 (en
GB2273393B (en
Inventor
Darioush Agahi-Kesheh
Zdravko M Zakman
Robert Kenoun
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.)
Motorola Solutions Inc
Original Assignee
Motorola 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.)
Filing date
Publication date
Application filed by Motorola Inc filed Critical Motorola Inc
Publication of GB9400899D0 publication Critical patent/GB9400899D0/en
Publication of GB2273393A publication Critical patent/GB2273393A/en
Application granted granted Critical
Publication of GB2273393B publication Critical patent/GB2273393B/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H01P1/2056—Comb filters or interdigital filters with metallised resonator holes in a dielectric block

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
  • Developing Agents For Electrophotography (AREA)
  • Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
  • Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)

Abstract

A filter duplexer (280), such as a filter duplexer for a radio transceiver, of minimum dimensions is disclosed. A first filter portion (304, 308, 312, 316) of the duplexer filter includes resonators of at least a first geometric configuration, and a second filter circuit portion (320, 324, 328, 332, 336) of the duplexer filter comprises resonators of a second geometric configuration. The geometric configuration of the two filter circuit portions are dissimilar, and the relative characteristic admittances of the resonators of the respective filter circuit portions are dissimilar. Because the resonators of the two filter circuit portions are of dissimilar electrical characteristics, a desired frequency response of the duplexer filter may be obtained with similar loading capacitances. <IMAGE>
GB9400899A 1992-05-26 1993-04-19 Multi-passband,dielectric filter construction Expired - Lifetime GB2273393B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US88808992A 1992-05-26 1992-05-26
PCT/US1993/003693 WO1993024968A1 (en) 1992-05-26 1993-04-19 Multi-passband, dielectric filter construction

Publications (3)

Publication Number Publication Date
GB9400899D0 GB9400899D0 (en) 1994-04-13
GB2273393A true GB2273393A (en) 1994-06-15
GB2273393B GB2273393B (en) 1996-09-04

Family

ID=25392506

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9400899A Expired - Lifetime GB2273393B (en) 1992-05-26 1993-04-19 Multi-passband,dielectric filter construction

Country Status (9)

Country Link
JP (1) JP3205337B2 (en)
KR (1) KR970000059B1 (en)
CN (1) CN1029340C (en)
CA (1) CA2114029C (en)
FI (1) FI940399A0 (en)
FR (1) FR2693037B1 (en)
GB (1) GB2273393B (en)
IT (1) IT1261678B (en)
WO (1) WO1993024968A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2339341A (en) * 1998-07-08 2000-01-19 Samsung Electro Mech Duplexer dielectric filter
US6169465B1 (en) 1998-07-08 2001-01-02 Samsung Electro-Mechanics Co., Ltd. Duplexer dielectric filter
GB2379803A (en) * 2001-05-30 2003-03-19 Murata Manufacturing Co Dielectric filter with through-holes having elongate sectional shape

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4319241A1 (en) * 1993-06-09 1994-12-15 Siemens Matsushita Components Monolithic microwave ceramic filter
US5502422A (en) * 1994-08-12 1996-03-26 Motorola, Inc. Filter with an adjustable shunt zero
US5748058A (en) * 1995-02-03 1998-05-05 Teledyne Industries, Inc. Cross coupled bandpass filter
JP3158963B2 (en) * 1995-05-31 2001-04-23 株式会社村田製作所 Antenna duplexer
JPH10308604A (en) * 1997-03-05 1998-11-17 Murata Mfg Co Ltd Dielectric filter, dielectric duplexer and designing method therefor
US6087909A (en) * 1996-03-06 2000-07-11 Murata Manufacturing Co., Ltd. Dielectric filter having at least one stepped resonator hole with an elongated cross-section
ATE280441T1 (en) * 1998-03-18 2004-11-15 Epcos Ag MICROWAVE CERAMIC FILTER WITH IMPROVED SIDE STEEPNESS
JPH11312902A (en) * 1998-04-30 1999-11-09 Murata Mfg Co Ltd Dielectric filter, transmission/reception equipment and communication equipment
KR100375583B1 (en) * 2000-11-18 2003-03-15 센티스 주식회사 A dielectric filter and duplexer dielectric filter for removing higher-order mode harmonic frequency and for improving skirt and spurious response
JP2003318606A (en) 2002-04-23 2003-11-07 Sanyo Electric Co Ltd Dielectric filter
JP3883902B2 (en) 2002-04-25 2007-02-21 三洋電機株式会社 Dielectric filter
US9202660B2 (en) 2013-03-13 2015-12-01 Teledyne Wireless, Llc Asymmetrical slow wave structures to eliminate backward wave oscillations in wideband traveling wave tubes
CN103246538B (en) * 2013-05-16 2016-12-28 中国电子科技集团公司第四十一研究所 Make the intelligentized plug-in method of microwave apparatus circuit board

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4733208A (en) * 1984-08-21 1988-03-22 Murata Manufacturing Co., Ltd. Dielectric filter having impedance changing means coupling adjacent resonators
US4742562A (en) * 1984-09-27 1988-05-03 Motorola, Inc. Single-block dual-passband ceramic filter useable with a transceiver
US4879533A (en) * 1988-04-01 1989-11-07 Motorola, Inc. Surface mount filter with integral transmission line connection
US4954796A (en) * 1986-07-25 1990-09-04 Motorola, Inc. Multiple resonator dielectric filter

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01213002A (en) * 1988-02-22 1989-08-25 Fuji Elelctrochem Co Ltd Dielectric branching filter
US5109536A (en) * 1989-10-27 1992-04-28 Motorola, Inc. Single-block filter for antenna duplexing and antenna-summed diversity
US5208566A (en) * 1992-01-21 1993-05-04 Motorola, Inc. Dielectric filter having adjacently-positioned resonators of dissimilar cross-sectional dimensions and notched side surface

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4733208A (en) * 1984-08-21 1988-03-22 Murata Manufacturing Co., Ltd. Dielectric filter having impedance changing means coupling adjacent resonators
US4742562A (en) * 1984-09-27 1988-05-03 Motorola, Inc. Single-block dual-passband ceramic filter useable with a transceiver
US4954796A (en) * 1986-07-25 1990-09-04 Motorola, Inc. Multiple resonator dielectric filter
US4879533A (en) * 1988-04-01 1989-11-07 Motorola, Inc. Surface mount filter with integral transmission line connection

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2339341A (en) * 1998-07-08 2000-01-19 Samsung Electro Mech Duplexer dielectric filter
US6169465B1 (en) 1998-07-08 2001-01-02 Samsung Electro-Mechanics Co., Ltd. Duplexer dielectric filter
GB2339341B (en) * 1998-07-08 2003-07-09 Samsung Electro Mech A duplexer dielectric filter
GB2379803A (en) * 2001-05-30 2003-03-19 Murata Manufacturing Co Dielectric filter with through-holes having elongate sectional shape
GB2379803B (en) * 2001-05-30 2003-09-03 Murata Manufacturing Co Dielectric filter, dielectric, duplexer and communication device

Also Published As

Publication number Publication date
GB9400899D0 (en) 1994-04-13
KR970000059B1 (en) 1997-01-04
CN1082773A (en) 1994-02-23
JPH06509693A (en) 1994-10-27
GB2273393B (en) 1996-09-04
ITRM930345A0 (en) 1993-05-24
FR2693037A1 (en) 1993-12-31
CA2114029A1 (en) 1993-12-09
CN1029340C (en) 1995-07-12
WO1993024968A1 (en) 1993-12-09
FI940399A (en) 1994-01-26
IT1261678B (en) 1996-05-29
ITRM930345A1 (en) 1994-11-24
JP3205337B2 (en) 2001-09-04
CA2114029C (en) 1997-11-18
FR2693037B1 (en) 1995-08-04
FI940399A0 (en) 1994-01-26

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Legal Events

Date Code Title Description
PE20 Patent expired after termination of 20 years

Expiry date: 20130418