EP0993063A3 - Duplexer and communication apparatus - Google Patents

Duplexer and communication apparatus Download PDF

Info

Publication number
EP0993063A3
EP0993063A3 EP99120152A EP99120152A EP0993063A3 EP 0993063 A3 EP0993063 A3 EP 0993063A3 EP 99120152 A EP99120152 A EP 99120152A EP 99120152 A EP99120152 A EP 99120152A EP 0993063 A3 EP0993063 A3 EP 0993063A3
Authority
EP
European Patent Office
Prior art keywords
duplexer
transmission
communication apparatus
band
select switch
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Withdrawn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
EP99120152A
Other languages
German (de)
French (fr)
Other versions
EP0993063A2 (en
Inventor
Masayuki c/o Atokawa (A170) Intell.Prop.Dept.
Toshihiro c/o Yamamoto (A170) Intell.Prop.Dept.
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.)
Murata Manufacturing Co Ltd
Original Assignee
Murata Manufacturing 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 Murata Manufacturing Co Ltd filed Critical Murata Manufacturing Co Ltd
Publication of EP0993063A2 publication Critical patent/EP0993063A2/en
Publication of EP0993063A3 publication Critical patent/EP0993063A3/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Withdrawn legal-status Critical Current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
    • H01P1/213—Frequency-selective devices, e.g. filters combining or separating two or more different frequencies
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/10—Auxiliary devices for switching or interrupting
    • H01P1/15—Auxiliary devices for switching or interrupting by semiconductor devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/10—Auxiliary devices for switching or interrupting
    • 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
    • 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)
  • Transceivers (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)

Abstract

The invention provides a duplexer (15) comprising:
  • a frequency variable filter (13) switching between a first band and a second band by a voltage-controllable reactor D1; and a transmission/reception select switch (14) connected to an input/output terminal of an end of the frequency variable filter (13).
    • The above duplexer is small and capable of efficiently eliminating harmonics of transmission signals generated by a transmission/reception select switch.
    EP99120152A 1998-10-08 1999-10-08 Duplexer and communication apparatus Withdrawn EP0993063A3 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    JP28661998 1998-10-08
    JP10286619A JP2000114804A (en) 1998-10-08 1998-10-08 Antenna sharing device and communication equipment device

    Publications (2)

    Publication Number Publication Date
    EP0993063A2 EP0993063A2 (en) 2000-04-12
    EP0993063A3 true EP0993063A3 (en) 2001-05-02

    Family

    ID=17706762

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP99120152A Withdrawn EP0993063A3 (en) 1998-10-08 1999-10-08 Duplexer and communication apparatus

    Country Status (3)

    Country Link
    EP (1) EP0993063A3 (en)
    JP (1) JP2000114804A (en)
    KR (1) KR20000028933A (en)

    Families Citing this family (11)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    KR100354964B1 (en) * 1999-12-23 2002-10-05 삼성전기주식회사 Apparatus for receiving of high radio frequency using dielectric resonator and method for the same
    JP3613156B2 (en) 2000-01-18 2005-01-26 株式会社村田製作所 Dielectric filter, antenna duplexer, and communication device
    KR100352114B1 (en) * 2000-08-22 2002-09-12 주식회사 케이이씨 a duplexer having surface patterned resonators
    DE60219385T2 (en) * 2001-02-27 2007-08-09 Matsushita Electric Industrial Co., Ltd., Kadoma Antenna duplexer and mobile communication device using it
    JP2003060408A (en) * 2001-06-05 2003-02-28 Murata Mfg Co Ltd Filter component and communication apparatus
    JP3810011B2 (en) 2003-08-08 2006-08-16 Ｔｄｋ株式会社 High frequency switch module and multilayer substrate for high frequency switch module
    KR100986499B1 (en) * 2003-09-01 2010-10-07 엘지이노텍 주식회사 Duplexer circuit
    KR100613909B1 (en) 2004-12-07 2006-08-22 한국전자통신연구원 Frequency tunable filter with a closed loop structure
    KR100747978B1 (en) * 2005-06-17 2007-08-08 엘지이노텍 주식회사 Front end module and fabricating method thereof
    JP4752771B2 (en) * 2007-01-19 2011-08-17 株式会社村田製作所 Method for suppressing unwanted wave radiation of antenna structure, antenna structure, and radio communication apparatus including the same
    WO2020250734A1 (en) * 2019-06-10 2020-12-17 株式会社村田製作所 High-frequency circuit, high-frequency module, and communication device

    Citations (6)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US5023935A (en) * 1989-11-17 1991-06-11 Nynex Corporation Combined multi-port transmit/receive switch and filter
    EP0520641A1 (en) * 1991-06-25 1992-12-30 Lk-Products Oy Adjustable resonator arrangement
    EP0570184A1 (en) * 1992-05-14 1993-11-18 Lk-Products Oy A filter used as transmit-receive switch
    US5486797A (en) * 1994-08-04 1996-01-23 Uniden Corporation Integrated port selection circuit for high frequency signal
    EP0736978A2 (en) * 1995-04-07 1996-10-09 Lk-Products Oy Radio communication transceiver
    EP0865095A2 (en) * 1997-03-12 1998-09-16 Matsushita Electric Industrial Co., Ltd. Antenna duplexer

    Patent Citations (6)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US5023935A (en) * 1989-11-17 1991-06-11 Nynex Corporation Combined multi-port transmit/receive switch and filter
    EP0520641A1 (en) * 1991-06-25 1992-12-30 Lk-Products Oy Adjustable resonator arrangement
    EP0570184A1 (en) * 1992-05-14 1993-11-18 Lk-Products Oy A filter used as transmit-receive switch
    US5486797A (en) * 1994-08-04 1996-01-23 Uniden Corporation Integrated port selection circuit for high frequency signal
    EP0736978A2 (en) * 1995-04-07 1996-10-09 Lk-Products Oy Radio communication transceiver
    EP0865095A2 (en) * 1997-03-12 1998-09-16 Matsushita Electric Industrial Co., Ltd. Antenna duplexer

    Also Published As

    Publication number Publication date
    EP0993063A2 (en) 2000-04-12
    KR20000028933A (en) 2000-05-25
    JP2000114804A (en) 2000-04-21

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