WO2004028006A3 - Filtering device and method with out-of-band attenuation - Google Patents

Filtering device and method with out-of-band attenuation Download PDF

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Publication number
WO2004028006A3
WO2004028006A3 PCT/FR2003/002768 FR0302768W WO2004028006A3 WO 2004028006 A3 WO2004028006 A3 WO 2004028006A3 FR 0302768 W FR0302768 W FR 0302768W WO 2004028006 A3 WO2004028006 A3 WO 2004028006A3
Authority
WO
WIPO (PCT)
Prior art keywords
filtering device
attenuation
band attenuation
amplifier
series
Prior art date
Application number
PCT/FR2003/002768
Other languages
French (fr)
Other versions
WO2004028006A2 (en
Inventor
Alain Renard
Estelle Kirby
Original Assignee
Thales Sa
Alain Renard
Estelle Kirby
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 Thales Sa, Alain Renard, Estelle Kirby filed Critical Thales Sa
Publication of WO2004028006A2 publication Critical patent/WO2004028006A2/en
Publication of WO2004028006A3 publication Critical patent/WO2004028006A3/en

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
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/26—Circuits for superheterodyne receivers
    • H04B1/28—Circuits for superheterodyne receivers the receiver comprising at least one semiconductor device having three or more electrodes
    • 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
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/18—Input circuits, e.g. for coupling to an antenna or a transmission line

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Noise Elimination (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)

Abstract

The invention relates to a filtering device with out-of-band attenuation. The inventive device comprises at least two series-mounted filters with high near selectivity (Fsaw1, Fsaw2). Each of said filters has a pre-determined insertion loss and attenuation and is mounted in series with an amplifier (Amp3, Amp4). The invention is characterised in that the gain of the amplifier is adapted to the insertion loss and the attenuation of the filter with which it is associated.
PCT/FR2003/002768 2002-09-20 2003-09-19 Filtering device and method with out-of-band attenuation WO2004028006A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0211686A FR2844934B1 (en) 2002-09-20 2002-09-20 OFF-BAND ATTENUATION FILTERING DEVICE AND METHOD
FR02/11686 2002-09-20

Publications (2)

Publication Number Publication Date
WO2004028006A2 WO2004028006A2 (en) 2004-04-01
WO2004028006A3 true WO2004028006A3 (en) 2004-04-22

Family

ID=31970868

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FR2003/002768 WO2004028006A2 (en) 2002-09-20 2003-09-19 Filtering device and method with out-of-band attenuation

Country Status (2)

Country Link
FR (1) FR2844934B1 (en)
WO (1) WO2004028006A2 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5537676A (en) * 1994-05-20 1996-07-16 Lanser Technologies Corporation Method of receiving data signals in a radio transceiver using low cost components
US6219531B1 (en) * 1998-09-04 2001-04-17 Ericsson Inc. Architecture and frequency plan for a UHF portable radio
US6229479B1 (en) * 1997-04-25 2001-05-08 Magellan Corporation Relative position measuring techniques using both GPS and GLONASS carrier phase measurements
US6256511B1 (en) * 1996-02-16 2001-07-03 Nortel Network Limited Dual-mode radio architecture

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5537676A (en) * 1994-05-20 1996-07-16 Lanser Technologies Corporation Method of receiving data signals in a radio transceiver using low cost components
US6256511B1 (en) * 1996-02-16 2001-07-03 Nortel Network Limited Dual-mode radio architecture
US6229479B1 (en) * 1997-04-25 2001-05-08 Magellan Corporation Relative position measuring techniques using both GPS and GLONASS carrier phase measurements
US6219531B1 (en) * 1998-09-04 2001-04-17 Ericsson Inc. Architecture and frequency plan for a UHF portable radio

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ANEMOGIANNIS K ET AL: "Cordless phone system architectures based on SAW filters", ULTRASONICS SYMPOSIUM, 1993. PROCEEDINGS., IEEE 1993 BALTIMORE, MD, USA 31 OCT.-3 NOV. 1993, NEW YORK, NY, USA,IEEE, 31 October 1993 (1993-10-31), pages 85 - 88, XP010114963, ISBN: 0-7803-1278-3 *

Also Published As

Publication number Publication date
FR2844934B1 (en) 2005-08-26
FR2844934A1 (en) 2004-03-26
WO2004028006A2 (en) 2004-04-01

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