IT1261739B - Struttura di filtro dielettrico. - Google Patents

Struttura di filtro dielettrico.

Info

Publication number
IT1261739B
IT1261739B ITRM930013A ITRM930013A IT1261739B IT 1261739 B IT1261739 B IT 1261739B IT RM930013 A ITRM930013 A IT RM930013A IT RM930013 A ITRM930013 A IT RM930013A IT 1261739 B IT1261739 B IT 1261739B
Authority
IT
Italy
Prior art keywords
block
dielectric
filter
resonant cavities
filter structure
Prior art date
Application number
ITRM930013A
Other languages
English (en)
Inventor
Robert Kenoun
Darioush Agahi-Kesheh
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 ITRM930013A0 publication Critical patent/ITRM930013A0/it
Publication of ITRM930013A1 publication Critical patent/ITRM930013A1/it
Application granted granted Critical
Publication of IT1261739B publication Critical patent/IT1261739B/it

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)
  • Inorganic Insulating Materials (AREA)

Abstract

Una struttura di filtro dielettrico (50) avente almeno due cavità risonanti (88, 92) che si estendono in senso longitudinale attraverso un blocco di materiale dielettrico. Almeno una delle cavità risonanti (92) presenta un'area di sezione retta che è allungata in una direzione trasversale (148) ed almeno una intacca (106, 112) è formata in modo da estendersi longitudinalmente lungo almeno una delle superfici del blocco di materiale dielettrico fra le adiacenti cavità risonanti (88, 92). Mediante appropriata scelta della entità dell'allungamento della sezione retta della cavità risonante (92) e della posizione e della dimensione dell'intacca (106, 112) formata lungo la superficie del blocco, i valori degli elementi componenti che formano il filtro (50) possono essere scelti attraverso un intervallo più esteso senza alterare la dimensione fisica del filtro (50).
ITRM930013A 1992-01-21 1993-01-13 Struttura di filtro dielettrico. IT1261739B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/823,227 US5208566A (en) 1992-01-21 1992-01-21 Dielectric filter having adjacently-positioned resonators of dissimilar cross-sectional dimensions and notched side surface

Publications (3)

Publication Number Publication Date
ITRM930013A0 ITRM930013A0 (it) 1993-01-13
ITRM930013A1 ITRM930013A1 (it) 1994-07-13
IT1261739B true IT1261739B (it) 1996-06-03

Family

ID=25238150

Family Applications (1)

Application Number Title Priority Date Filing Date
ITRM930013A IT1261739B (it) 1992-01-21 1993-01-13 Struttura di filtro dielettrico.

Country Status (6)

Country Link
US (1) US5208566A (it)
JP (1) JP3348101B2 (it)
CA (1) CA2104003C (it)
GB (1) GB2269706B (it)
IT (1) IT1261739B (it)
WO (1) WO1993014532A1 (it)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR970000059B1 (ko) * 1992-05-26 1997-01-04 모토로라 인코포레이티드 다중 통과 대역을 가지는 유전 필터 구조
US5404120A (en) * 1992-09-21 1995-04-04 Motorola, Inc. Dielectric filter construction having resonators of trapezoidal cross-sections
US5379011A (en) * 1992-10-23 1995-01-03 Motorola, Inc. Surface mount ceramic filter duplexer having reduced input/output coupling and adjustable high-side transmission zeroes
US5406236A (en) * 1992-12-16 1995-04-11 Motorola, Inc. Ceramic block filter having nonsymmetrical input and output impedances and combined radio communication apparatus
DE4319241A1 (de) * 1993-06-09 1994-12-15 Siemens Matsushita Components Monolithisches Mikrowellen-Keramikfilter
DE4319242A1 (de) * 1993-06-09 1994-12-15 Siemens Matsushita Components Keramikresonator für Mikrowellen-Keramikfilter
JPH0711002U (ja) * 1993-07-23 1995-02-14 日本特殊陶業株式会社 誘電体フィルタ
JPH0725602U (ja) * 1993-09-28 1995-05-12 日本特殊陶業株式会社 誘電体フィルタの実装構造
US5512866A (en) † 1994-04-29 1996-04-30 Motorola, Inc. Ceramic duplex filter
JP3067575B2 (ja) * 1995-03-08 2000-07-17 株式会社村田製作所 誘電体フィルタ
JP3014638B2 (ja) * 1996-03-15 2000-02-28 ティーディーケイ株式会社 誘電体フィルタ
US6507250B1 (en) * 1999-08-13 2003-01-14 Murata Manufacturing Co. Ltd. Dielectric filter, dielectric duplexer, and communication equipment
JP3788384B2 (ja) * 2001-05-30 2006-06-21 株式会社村田製作所 誘電体フィルタ、誘電体デュプレクサ、および通信装置
US20040174236A1 (en) * 2002-02-21 2004-09-09 Matthews Brian Richard Ceramic RF filter having improved third harmonic response
JP3839339B2 (ja) * 2002-03-29 2006-11-01 日本特殊陶業株式会社 誘電体フィルタ又は誘電体デュプレクサ等の誘電体電子部品、及び該誘電体電子部品の減衰特性調整方法
EP2144326A1 (en) * 2008-07-07 2010-01-13 Nokia Siemens Networks OY Filter for electronic signals and method for manufacturing it
US9030276B2 (en) 2008-12-09 2015-05-12 Cts Corporation RF monoblock filter with a dielectric core and with a second filter disposed in a side surface of the dielectric core
US9030275B2 (en) 2008-12-09 2015-05-12 Cts Corporation RF monoblock filter with recessed top pattern and cavity providing improved attenuation
KR20110102925A (ko) * 2009-01-08 2011-09-19 시티에스 코포레이션 리세스 형성된 상부 패턴 및 캐비티를 갖는 듀플렉스 필터
US9030272B2 (en) 2010-01-07 2015-05-12 Cts Corporation Duplex filter with recessed top pattern and cavity
CN111384481A (zh) * 2018-12-29 2020-07-07 深圳市大富科技股份有限公司 介质谐振器及其制造方法、介质滤波器、通信设备
WO2020198979A1 (en) 2019-03-29 2020-10-08 Telefonaktiebolaget Lm Ericsson (Publ) Resonating structure and dielectric filter having the same

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4464640A (en) * 1981-10-02 1984-08-07 Murata Manufacturing Co., Ltd. Distribution constant type filter
US4431977A (en) * 1982-02-16 1984-02-14 Motorola, Inc. Ceramic bandpass filter
JPS60114004A (ja) * 1983-11-25 1985-06-20 Murata Mfg Co Ltd 誘電体フィルタの実装構造
JPS6152003A (ja) * 1984-08-21 1986-03-14 Murata Mfg Co Ltd 誘電体フイルタ
US4742562A (en) * 1984-09-27 1988-05-03 Motorola, Inc. Single-block dual-passband ceramic filter useable with a transceiver
JPS61280101A (ja) * 1985-06-05 1986-12-10 Murata Mfg Co Ltd 分布定数形フイルタ
GB2198513B (en) * 1986-11-24 1990-09-19 Boc Group Plc Air separation
JPH01112801A (ja) * 1987-10-26 1989-05-01 Kokusai Electric Co Ltd 誘電体帯域フィルタ
JPH07101803B2 (ja) * 1989-12-19 1995-11-01 松下電器産業株式会社 誘電体共振器
US5023580A (en) * 1989-12-22 1991-06-11 Motorola, Inc. Surface-mount filter

Also Published As

Publication number Publication date
ITRM930013A1 (it) 1994-07-13
GB9316824D0 (en) 1993-10-20
CA2104003C (en) 1997-10-14
JP3348101B2 (ja) 2002-11-20
ITRM930013A0 (it) 1993-01-13
GB2269706A (en) 1994-02-16
JPH06505851A (ja) 1994-06-30
WO1993014532A1 (en) 1993-07-22
US5208566A (en) 1993-05-04
GB2269706B (en) 1995-09-20

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Legal Events

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0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19990129