FR2622054B1 - SWITCHABLE TUNING CAVITY FOR BANDPASS FILTER, IN PARTICULAR FOR DUPLEXER, AND TRANSCEIVER FOR RADIOTELEPHONY COMPRISING SUCH A CAVITY - Google Patents

SWITCHABLE TUNING CAVITY FOR BANDPASS FILTER, IN PARTICULAR FOR DUPLEXER, AND TRANSCEIVER FOR RADIOTELEPHONY COMPRISING SUCH A CAVITY

Info

Publication number
FR2622054B1
FR2622054B1 FR8714274A FR8714274A FR2622054B1 FR 2622054 B1 FR2622054 B1 FR 2622054B1 FR 8714274 A FR8714274 A FR 8714274A FR 8714274 A FR8714274 A FR 8714274A FR 2622054 B1 FR2622054 B1 FR 2622054B1
Authority
FR
France
Prior art keywords
cavity
radiotelephony
duplexer
transceiver
bandpass filter
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.)
Expired - Fee Related
Application number
FR8714274A
Other languages
French (fr)
Other versions
FR2622054A1 (en
Inventor
Dan Serbanescu
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.)
Const Electro SA Et
Original Assignee
Const Electro SA Et
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 Const Electro SA Et filed Critical Const Electro SA Et
Priority to FR8714274A priority Critical patent/FR2622054B1/en
Publication of FR2622054A1 publication Critical patent/FR2622054A1/en
Application granted granted Critical
Publication of FR2622054B1 publication Critical patent/FR2622054B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H5/00—One-port networks comprising only passive electrical elements as network components
    • H03H5/12—One-port networks comprising only passive electrical elements as network components with at least one voltage- or current-dependent element
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J5/00—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
    • H03J5/24—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection
    • H03J5/242—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection used exclusively for band selection
    • H03J5/244—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection used exclusively for band selection using electronic means
    • 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
    • H04B1/50—Circuits using different frequencies for the two directions of communication

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transceivers (AREA)
FR8714274A 1987-10-16 1987-10-16 SWITCHABLE TUNING CAVITY FOR BANDPASS FILTER, IN PARTICULAR FOR DUPLEXER, AND TRANSCEIVER FOR RADIOTELEPHONY COMPRISING SUCH A CAVITY Expired - Fee Related FR2622054B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8714274A FR2622054B1 (en) 1987-10-16 1987-10-16 SWITCHABLE TUNING CAVITY FOR BANDPASS FILTER, IN PARTICULAR FOR DUPLEXER, AND TRANSCEIVER FOR RADIOTELEPHONY COMPRISING SUCH A CAVITY

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8714274A FR2622054B1 (en) 1987-10-16 1987-10-16 SWITCHABLE TUNING CAVITY FOR BANDPASS FILTER, IN PARTICULAR FOR DUPLEXER, AND TRANSCEIVER FOR RADIOTELEPHONY COMPRISING SUCH A CAVITY

Publications (2)

Publication Number Publication Date
FR2622054A1 FR2622054A1 (en) 1989-04-21
FR2622054B1 true FR2622054B1 (en) 1990-04-13

Family

ID=9355870

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8714274A Expired - Fee Related FR2622054B1 (en) 1987-10-16 1987-10-16 SWITCHABLE TUNING CAVITY FOR BANDPASS FILTER, IN PARTICULAR FOR DUPLEXER, AND TRANSCEIVER FOR RADIOTELEPHONY COMPRISING SUCH A CAVITY

Country Status (1)

Country Link
FR (1) FR2622054B1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2664766A1 (en) * 1990-07-11 1992-01-17 Talco Sa Radio telephony
FI88442C (en) * 1991-06-25 1993-05-10 Lk Products Oy Method for offset of the characteristic curve of a resonated or in the frequency plane and a resonator structure
US5715528A (en) * 1996-02-08 1998-02-03 Ford Motor Company Converting capacitance to inductance in a floating resonant
CN112736382B (en) * 2020-12-25 2021-12-03 电子科技大学 Switchable reconfigurable duplexer/band-pass filter

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3519939A (en) * 1965-09-21 1970-07-07 Matsushita Electric Ind Co Ltd Automatic tuning receiver with detuning means
DE2616185C3 (en) * 1976-04-13 1978-10-26 Siemens Ag, 1000 Berlin Und 8000 Muenchen Transceiver with a switchable coupling circuit
US4408348A (en) * 1981-08-19 1983-10-04 Rca Corporation Multiband tuning system for a television receiver

Also Published As

Publication number Publication date
FR2622054A1 (en) 1989-04-21

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Legal Events

Date Code Title Description
ST Notification of lapse
ST Notification of lapse