EP0738021A3 - Wireless communication filter operating at low temperature - Google Patents

Wireless communication filter operating at low temperature Download PDF

Info

Publication number
EP0738021A3
EP0738021A3 EP96105629A EP96105629A EP0738021A3 EP 0738021 A3 EP0738021 A3 EP 0738021A3 EP 96105629 A EP96105629 A EP 96105629A EP 96105629 A EP96105629 A EP 96105629A EP 0738021 A3 EP0738021 A3 EP 0738021A3
Authority
EP
European Patent Office
Prior art keywords
shield case
case block
filter element
signal input
cooling plate
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
EP96105629A
Other languages
German (de)
French (fr)
Other versions
EP0738021A2 (en
EP0738021B1 (en
Inventor
Masahiro Sakai
Hidetaka Higashino
Kentaro Setsune
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of EP0738021A2 publication Critical patent/EP0738021A2/en
Publication of EP0738021A3 publication Critical patent/EP0738021A3/en
Application granted granted Critical
Publication of EP0738021B1 publication Critical patent/EP0738021B1/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
    • H01P1/203—Strip line filters
    • H01P1/20327—Electromagnetic interstage coupling
    • H01P1/20354—Non-comb or non-interdigital filters
    • H01P1/20363—Linear resonators
    • 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
    • H01P1/213—Frequency-selective devices, e.g. filters combining or separating two or more different frequencies
    • H01P1/2135—Frequency-selective devices, e.g. filters combining or separating two or more different frequencies using strip line filters
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/30—Auxiliary devices for compensation of, or protection against, temperature or moisture effects ; for improving power handling capability

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Superconductor Devices And Manufacturing Methods Thereof (AREA)
  • Transmitters (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)

Abstract

A high power filter apparatus which is used in a mobile communication base station or the like is provided wherein the temperature stability and frequency selection are excellent, an insertion loss is small, the size is small, power consumption is low and costs are low. A shield case block (1) comprises signal input and output portions (2a) and (2b), and a plurality of closed spaces (10) which house a filter element (11) connected between the signal input and output portions (2a) and (2b). A cooling plate (3) is provided in a heat insulating container (4) which houses the shield case block (1). The shield case block (1) is fixed to the cooling plate (3) in the thermal contact state. Each filter element (11) is placed almost in parallel. A cylindrical hole having an axis which is almost parallel with the face of the filter element (11) penetrates the shield case block (1). A ground rod made of a conductor which changes the volume of the closed space (10) is provided on the inner end portion of a movable member which moves in the axial direction of the cylindrical hole.
EP19960105629 1995-04-11 1996-04-10 Wireless communication filter operating at low temperature Expired - Lifetime EP0738021B1 (en)

Applications Claiming Priority (15)

Application Number Priority Date Filing Date Title
JP8570895 1995-04-11
JP85708/95 1995-04-11
JP8570895 1995-04-11
JP92584/95 1995-04-18
JP9258495 1995-04-18
JP9258495 1995-04-18
JP127712/95 1995-05-26
JP12771295 1995-05-26
JP12771295 1995-05-26
JP136525/95 1995-06-02
JP13652695 1995-06-02
JP136526/95 1995-06-02
JP13652695 1995-06-02
JP13652595 1995-06-02
JP13652595 1995-06-02

Publications (3)

Publication Number Publication Date
EP0738021A2 EP0738021A2 (en) 1996-10-16
EP0738021A3 true EP0738021A3 (en) 1998-03-04
EP0738021B1 EP0738021B1 (en) 2003-10-08

Family

ID=27525170

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19960105629 Expired - Lifetime EP0738021B1 (en) 1995-04-11 1996-04-10 Wireless communication filter operating at low temperature

Country Status (2)

Country Link
EP (1) EP0738021B1 (en)
DE (1) DE69630258T2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116780137B (en) * 2023-08-23 2023-12-08 晋江市高威电磁科技股份有限公司 Filter capable of being connected with radio frequency interface

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0260203A (en) * 1988-08-25 1990-02-28 Matsushita Electric Ind Co Ltd Electric magnetic device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0260203A (en) * 1988-08-25 1990-02-28 Matsushita Electric Ind Co Ltd Electric magnetic device

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
BABBITT R ET AL: "FABRICATION AND EVALUATION OF SUPERCONDUCTING DEVICES", MICROWAVE JOURNAL, vol. 34, no. 4, 1 April 1991 (1991-04-01), pages 40, 42 - 44, 46 - 48, XP000230887 *
MANSOUR R R: "DESIGN OF SUPERCONDUCTIVE MULTIPLEXERS USING SINGLE-MODE AND DUAL-MODE FILTERS", IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, vol. 42, no. 7, PART 02, 1 July 1994 (1994-07-01), pages 1411 - 1418, XP000457511 *
PATENT ABSTRACTS OF JAPAN vol. 14, no. 229 (E - 928) 15 May 1990 (1990-05-15) *

Also Published As

Publication number Publication date
DE69630258T2 (en) 2004-05-06
EP0738021A2 (en) 1996-10-16
EP0738021B1 (en) 2003-10-08
DE69630258D1 (en) 2003-11-13

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