GB8523344D0 - Radio frequency ceramic filters - Google Patents

Radio frequency ceramic filters

Info

Publication number
GB8523344D0
GB8523344D0 GB858523344A GB8523344A GB8523344D0 GB 8523344 D0 GB8523344 D0 GB 8523344D0 GB 858523344 A GB858523344 A GB 858523344A GB 8523344 A GB8523344 A GB 8523344A GB 8523344 D0 GB8523344 D0 GB 8523344D0
Authority
GB
United Kingdom
Prior art keywords
radio frequency
ceramic filters
frequency ceramic
filters
radio
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
GB858523344A
Other versions
GB2165098A (en
GB2165098B (en
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 GB8523344D0 publication Critical patent/GB8523344D0/en
Publication of GB2165098A publication Critical patent/GB2165098A/en
Application granted granted Critical
Publication of GB2165098B publication Critical patent/GB2165098B/en
Expired 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)
  • Transceivers (AREA)
GB08523344A 1984-09-27 1985-09-20 Radio frequency filters Expired GB2165098B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US65612184A 1984-09-27 1984-09-27

Publications (3)

Publication Number Publication Date
GB8523344D0 true GB8523344D0 (en) 1985-10-23
GB2165098A GB2165098A (en) 1986-04-03
GB2165098B GB2165098B (en) 1988-05-25

Family

ID=24631722

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08523344A Expired GB2165098B (en) 1984-09-27 1985-09-20 Radio frequency filters

Country Status (4)

Country Link
JP (1) JPH0697721B2 (en)
GB (1) GB2165098B (en)
HK (1) HK88490A (en)
SG (1) SG73190G (en)

Families Citing this family (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0318478B1 (en) * 1986-07-25 1995-02-15 Motorola, Inc. Multiple resonator component-mountable filter
US4692726A (en) * 1986-07-25 1987-09-08 Motorola, Inc. Multiple resonator dielectric filter
JPS6335301U (en) * 1986-08-26 1988-03-07
JPS6354803A (en) * 1986-08-26 1988-03-09 Oki Electric Ind Co Ltd Dielectric filter
JPS6340009U (en) * 1986-09-02 1988-03-15
US4980660A (en) * 1986-10-06 1990-12-25 Matsushita Electric Industrial Co., Ltd. Antenna sharing apparatus for switchable transmit/receive filters
JPS641306A (en) * 1987-06-24 1989-01-05 Matsushita Electric Ind Co Ltd Distributor
JPH0612841B2 (en) * 1987-08-08 1994-02-16 沖電気工業株式会社 Frequency adjustment method for dielectric filter
JPH0652843B2 (en) * 1987-08-31 1994-07-06 沖電気工業株式会社 Duplexer
JPH0191502A (en) * 1987-10-01 1989-04-11 Murata Mfg Co Ltd Dielectric resonator
US4785271A (en) * 1987-11-24 1988-11-15 Motorola, Inc. Stripline filter with improved resonator structure
JPH0628801Y2 (en) * 1987-12-10 1994-08-03 株式会社村田製作所 Dielectric filter
JPH0722885Y2 (en) * 1988-02-16 1995-05-24 株式会社村田製作所 Stripline filter package structure
JPH01227530A (en) * 1988-03-07 1989-09-11 Kokusai Electric Co Ltd Branching filter
US4879533A (en) * 1988-04-01 1989-11-07 Motorola, Inc. Surface mount filter with integral transmission line connection
US4823098A (en) * 1988-06-14 1989-04-18 Motorola, Inc. Monolithic ceramic filter with bandstop function
US5015974A (en) * 1988-06-20 1991-05-14 Oki Electric Industry Co., Ltd. Isolating circuit and dielectric filter for use therein
JPH0722887Y2 (en) * 1988-09-05 1995-05-24 ティーディーケイ株式会社 Dielectric filter device
JPH071843Y2 (en) * 1988-10-11 1995-01-18 富士電気化学株式会社 Dielectric filter
JPH07105644B2 (en) * 1988-10-18 1995-11-13 沖電気工業株式会社 Polarized dielectric filter
GB2236432B (en) * 1989-09-30 1994-06-29 Kyocera Corp Dielectric filter
US5023580A (en) * 1989-12-22 1991-06-11 Motorola, Inc. Surface-mount filter
US5045824A (en) * 1990-09-04 1991-09-03 Motorola, Inc. Dielectric filter construction
DE69125273T2 (en) * 1990-12-26 1997-08-28 Ube Industries DIELECTRIC FILTER
FI87852C (en) * 1991-04-12 1993-02-25 Lk Products Oy Tunable ceramic filter and method for its tuning
US5202654A (en) * 1991-07-22 1993-04-13 Motorola, Inc. Multi-stage monolithic ceramic bandstop filter with isolated filter stages
JPH0728723Y2 (en) * 1992-03-26 1995-06-28 株式会社村田製作所 Dielectric coaxial resonator
JPH0621701A (en) * 1992-06-30 1994-01-28 Taiyo Yuden Co Ltd Filter inclusing dielectric resonator
US5278527A (en) * 1992-07-17 1994-01-11 Motorola, Inc. Dielectric filter and shield therefor
JP3252570B2 (en) * 1993-10-15 2002-02-04 株式会社村田製作所 Dielectric duplexer
JP3067575B2 (en) * 1995-03-08 2000-07-17 株式会社村田製作所 Dielectric filter
WO2001052344A1 (en) * 2000-01-14 2001-07-19 Cts Corporation Ceramic bandstop monoblock filter with coplanar waveguide transmission lines
JP3864974B2 (en) 2005-01-18 2007-01-10 株式会社村田製作所 Dielectric filter, dielectric duplexer, and communication device
US8229366B2 (en) * 2005-04-08 2012-07-24 Qualcomm, Incorporated Tunable duplexer with common node notch filter
JPWO2006137470A1 (en) 2005-06-23 2009-01-22 宇部興産株式会社 Dielectric filter for base station communication equipment
JP6127630B2 (en) * 2013-03-22 2017-05-17 宇部興産株式会社 Dielectric resonant component

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1131114A (en) * 1966-06-08 1968-10-23 Marconi Co Ltd Improvements in or relating to microwave filters
JPS5717201A (en) * 1980-07-07 1982-01-28 Fujitsu Ltd Dielectric substance filter
JPS583301A (en) * 1981-06-30 1983-01-10 Fujitsu Ltd Dielectric substance filter
GB2109641B (en) * 1981-10-02 1985-08-14 Murata Manufacturing Co Distributed constant type filter
US4431977A (en) * 1982-02-16 1984-02-14 Motorola, Inc. Ceramic bandpass filter
DE3382762T2 (en) * 1982-05-10 1995-05-04 Oki Electric Ind Co Ltd Dielectric filter.
JPS59114902A (en) * 1982-12-21 1984-07-03 Fujitsu Ltd Dielectric filter
JPS60254802A (en) * 1984-05-30 1985-12-16 Murata Mfg Co Ltd Distributed constant type filter

Also Published As

Publication number Publication date
SG73190G (en) 1991-08-23
GB2165098A (en) 1986-04-03
GB2165098B (en) 1988-05-25
HK88490A (en) 1990-11-02
JPS61262301A (en) 1986-11-20
JPH0697721B2 (en) 1994-11-30

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Legal Events

Date Code Title Description
727 Application made for amendment of specification (sect. 27/1977)
727A Application for amendment of specification now open to opposition (sect. 27/1977)
727A Application for amendment of specification now open to opposition (sect. 27/1977)
727B Case decided by the comptroller ** specification amended (sect. 27/1977)
SP Amendment (slips) printed
PE20 Patent expired after termination of 20 years

Effective date: 20050919