CA2138033A1 - Circuit de filtrage accordable - Google Patents

Circuit de filtrage accordable

Info

Publication number
CA2138033A1
CA2138033A1 CA 2138033 CA2138033A CA2138033A1 CA 2138033 A1 CA2138033 A1 CA 2138033A1 CA 2138033 CA2138033 CA 2138033 CA 2138033 A CA2138033 A CA 2138033A CA 2138033 A1 CA2138033 A1 CA 2138033A1
Authority
CA
Canada
Prior art keywords
filter circuit
resonator
tunable filter
electrically
coating
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.)
Abandoned
Application number
CA 2138033
Other languages
English (en)
Inventor
Darioush Agahi-Kesheh
Duane Carl Rabe
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
Individual
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 Individual filed Critical Individual
Publication of CA2138033A1 publication Critical patent/CA2138033A1/fr
Abandoned legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/44—Transmit/receive switching
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/54—Circuits using the same frequency for two directions of communication
    • H04B1/56—Circuits using the same frequency for two directions of communication with provision for simultaneous communication in two directions

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Transceivers (AREA)
CA 2138033 1993-05-06 1994-04-20 Circuit de filtrage accordable Abandoned CA2138033A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US5760193A 1993-05-06 1993-05-06
US08/057,601 1993-05-06

Publications (1)

Publication Number Publication Date
CA2138033A1 true CA2138033A1 (fr) 1994-11-24

Family

ID=22011617

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2138033 Abandoned CA2138033A1 (fr) 1993-05-06 1994-04-20 Circuit de filtrage accordable

Country Status (2)

Country Link
CA (1) CA2138033A1 (fr)
WO (1) WO1994027376A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1146102A (ja) * 1997-05-30 1999-02-16 Murata Mfg Co Ltd 誘電体フィルタ、誘電体デュプレクサ及び通信機装置
US6686817B2 (en) * 2000-12-12 2004-02-03 Paratek Microwave, Inc. Electronic tunable filters with dielectric varactors
US7720443B2 (en) * 2003-06-02 2010-05-18 Kyocera Wireless Corp. System and method for filtering time division multiple access telephone communications

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4462009A (en) * 1982-05-25 1984-07-24 Rockwell International Corporation Broadband filter and tuning system
US4742562A (en) * 1984-09-27 1988-05-03 Motorola, Inc. Single-block dual-passband ceramic filter useable with a transceiver
US4721932A (en) * 1987-02-25 1988-01-26 Rockwell International Corporation Ceramic TEM resonator bandpass filters with varactor tuning
GB8806194D0 (en) * 1988-03-16 1988-04-13 Shaye Communications Ltd Transceivers
US5109536A (en) * 1989-10-27 1992-04-28 Motorola, Inc. Single-block filter for antenna duplexing and antenna-summed diversity
GB2247125B (en) * 1990-08-16 1995-01-11 Technophone Ltd Tunable bandpass filter
JPH05136706A (ja) * 1991-11-14 1993-06-01 Fujitsu Ten Ltd 受信フイルタ調整回路

Also Published As

Publication number Publication date
WO1994027376A1 (fr) 1994-11-24

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Legal Events

Date Code Title Description
EEER Examination request
FZDE Dead