EP0508733A3 - Adjustable ceramic filter - Google Patents

Adjustable ceramic filter Download PDF

Info

Publication number
EP0508733A3
EP0508733A3 EP19920303091 EP92303091A EP0508733A3 EP 0508733 A3 EP0508733 A3 EP 0508733A3 EP 19920303091 EP19920303091 EP 19920303091 EP 92303091 A EP92303091 A EP 92303091A EP 0508733 A3 EP0508733 A3 EP 0508733A3
Authority
EP
European Patent Office
Prior art keywords
ceramic filter
adjustable ceramic
adjustable
filter
ceramic
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.)
Withdrawn
Application number
EP19920303091
Other versions
EP0508733A2 (en
Inventor
Pauli Nappa
Keijo Salonen
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.)
Pulse Finland Oy
Original Assignee
LK Products 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 LK Products Oy filed Critical LK Products Oy
Publication of EP0508733A2 publication Critical patent/EP0508733A2/en
Publication of EP0508733A3 publication Critical patent/EP0508733A3/en
Withdrawn legal-status Critical Current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
EP19920303091 1991-04-12 1992-04-08 Adjustable ceramic filter Withdrawn EP0508733A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI911795 1991-04-12
FI911795A FI87852C (en) 1991-04-12 1991-04-12 Tunable ceramic filter and method for its tuning

Publications (2)

Publication Number Publication Date
EP0508733A2 EP0508733A2 (en) 1992-10-14
EP0508733A3 true EP0508733A3 (en) 1993-01-13

Family

ID=8532314

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19920303091 Withdrawn EP0508733A3 (en) 1991-04-12 1992-04-08 Adjustable ceramic filter

Country Status (5)

Country Link
EP (1) EP0508733A3 (en)
JP (1) JPH0661704A (en)
AU (1) AU1398492A (en)
CA (1) CA2065714A1 (en)
FI (1) FI87852C (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI95087C (en) * 1994-01-18 1995-12-11 Lk Products Oy Dielectric resonator frequency control
US5420554A (en) * 1994-03-30 1995-05-30 Motorola, Inc. Method and apparatus for adjusting a resonant frequency of a transmission line resonator assembly
JP3147681B2 (en) * 1994-11-11 2001-03-19 株式会社村田製作所 Antenna device
US5666093A (en) * 1995-08-11 1997-09-09 D'ostilio; James Phillip Mechanically tunable ceramic bandpass filter having moveable tabs
US5745018A (en) * 1996-07-09 1998-04-28 Motorola Inc. Ceramic filter with a coplanar shield
JP2002299907A (en) * 2001-03-29 2002-10-11 Tdk Corp Shield plate and dielectric filter mounted with the same
WO2013093976A1 (en) * 2011-12-22 2013-06-27 Nec Corporation Tunable resonant elements and filter based on these elements
KR101869757B1 (en) 2012-02-27 2018-06-21 주식회사 케이엠더블유 Radio frequency filter with cavity structure
KR101693214B1 (en) * 2014-10-28 2017-01-05 주식회사 케이엠더블유 Radio frequency filter with cavity structure
GB201613108D0 (en) * 2016-07-29 2016-09-14 Radio Design Ltd Filter apparatus and method of use thereof
US10454149B2 (en) 2016-11-08 2019-10-22 LDS Innovations LLC Tuning and measurement fixtures for ceramic filters

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1496177A (en) * 1966-08-09 1967-09-29 Nippon Electric Co High frequency wave filter
JPS59139701A (en) * 1983-01-30 1984-08-10 Nippon Dengiyou Kosaku Kk Comb-line type band-pass filter
GB2165098A (en) * 1984-09-27 1986-04-03 Motorola Inc Radio frequency filters
JPS62168413A (en) * 1986-01-20 1987-07-24 Sanyo Electric Co Ltd Double tuning circuit for tuner
JPS63187902A (en) * 1987-01-30 1988-08-03 Murata Mfg Co Ltd Coupling adjusting mechanism for integral molding dielectric resonator
GB2212671A (en) * 1987-11-23 1989-07-26 Solitra Oy Stripline circuit

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1496177A (en) * 1966-08-09 1967-09-29 Nippon Electric Co High frequency wave filter
JPS59139701A (en) * 1983-01-30 1984-08-10 Nippon Dengiyou Kosaku Kk Comb-line type band-pass filter
GB2165098A (en) * 1984-09-27 1986-04-03 Motorola Inc Radio frequency filters
JPS62168413A (en) * 1986-01-20 1987-07-24 Sanyo Electric Co Ltd Double tuning circuit for tuner
JPS63187902A (en) * 1987-01-30 1988-08-03 Murata Mfg Co Ltd Coupling adjusting mechanism for integral molding dielectric resonator
GB2212671A (en) * 1987-11-23 1989-07-26 Solitra Oy Stripline circuit

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 12, no. 465 (E-690)(3312) 7 December 1988 & JP-A-63 187 902 ( MURATA MANUFACTURING CO LTD ) 3 August 1988 *
PATENT ABSTRACTS OF JAPAN vol. 12, no. 7 (E-571)9 January 1988 & JP-A-62 168 413 ( SANYO ELECTRIC CO LTD ) 24 July 1987 *
PATENT ABSTRACTS OF JAPAN vol. 8, no. 268 (E-283)7 December 1984 & JP-A-59 139 701 ( NIHON DENGIYOU KOUSAKU K.K. ) 10 August 1984 *

Also Published As

Publication number Publication date
CA2065714A1 (en) 1992-10-13
AU1398492A (en) 1992-10-15
JPH0661704A (en) 1994-03-04
EP0508733A2 (en) 1992-10-14
FI87852B (en) 1992-11-13
FI911795A0 (en) 1991-04-12
FI87852C (en) 1993-02-25

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