WO2003103131A3 - QUADRATIC IMAGE REJECTION FILTER - Google Patents

QUADRATIC IMAGE REJECTION FILTER Download PDF

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Publication number
WO2003103131A3
WO2003103131A3 PCT/US2003/017089 US0317089W WO03103131A3 WO 2003103131 A3 WO2003103131 A3 WO 2003103131A3 US 0317089 W US0317089 W US 0317089W WO 03103131 A3 WO03103131 A3 WO 03103131A3
Authority
WO
WIPO (PCT)
Prior art keywords
image rejection
rejection filter
transfer function
sub
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.)
Ceased
Application number
PCT/US2003/017089
Other languages
French (fr)
Other versions
WO2003103131A2 (en
Inventor
Kimitake Utsunomiya
Takatsugu Kamata
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.)
Pixela Corp
Original Assignee
Ukom Inc
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 Ukom Inc filed Critical Ukom Inc
Priority to EP03736764A priority Critical patent/EP1514346A2/en
Priority to JP2004510102A priority patent/JP2005536080A/en
Priority to AU2003237298A priority patent/AU2003237298A1/en
Publication of WO2003103131A2 publication Critical patent/WO2003103131A2/en
Publication of WO2003103131A3 publication Critical patent/WO2003103131A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H11/00—Networks using active elements
    • H03H11/02—Multiple-port networks
    • H03H11/04—Frequency selective two-port networks
    • H03H11/12—Frequency selective two-port networks using amplifiers with feedback
    • H03H11/1291—Current or voltage controlled filters
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H11/00—Networks using active elements
    • H03H11/02—Multiple-port networks
    • H03H11/04—Frequency selective two-port networks
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H11/00—Networks using active elements
    • H03H11/02—Multiple-port networks
    • H03H11/04—Frequency selective two-port networks
    • H03H11/12—Frequency selective two-port networks using amplifiers with feedback
    • H03H11/1213—Frequency selective two-port networks using amplifiers with feedback using transistor amplifiers

Landscapes

  • Networks Using Active Elements (AREA)
  • Superheterodyne Receivers (AREA)

Abstract

L'invention concerne un filtre quadratique de réjection d'image qui peut être accordé pour filtrer les fréquences d'image sur une bande large. Dans un mode de réalisation, le filtre de réjection d'image comprend des mélangeurs de phase en phase et en quadrature. La réjection d'image possède une fonction de transfert fractionnel. Le filtre de réjection d'image possède deux sous-circuits : le premier sous-circuit produit le composant imaginaire de la fonction de transfert et le second sous-circuit produit le composant réel de la fonction de transfert. Le premier sous-circuit reçoit le signal Q tandis que le second sous-circuit reçoit le signal I. Dans un mode de réalisation, pour créer la fonction de transfert fractionnel, on utilise un intégrateur en boucle à rétroaction multiple.A quadratic image rejection filter can be tuned to filter the image frequencies over a wide band. In one embodiment, the image rejection filter comprises phase mixers in phase and in quadrature. Image rejection has a fractional transfer function. The image rejection filter has two sub-circuits: the first sub-circuit produces the imaginary component of the transfer function and the second sub-circuit produces the real component of the transfer function. The first subcircuit receives the signal Q while the second subcircuit receives the signal I. In one embodiment, to create the fractional transfer function, a multiple feedback loop integrator is used.

PCT/US2003/017089 2002-05-29 2003-05-29 Image rejection quadratic filter Ceased WO2003103131A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP03736764A EP1514346A2 (en) 2002-05-29 2003-05-29 Image rejection quadratic filter
JP2004510102A JP2005536080A (en) 2002-05-29 2003-05-29 Image removal secondary filter
AU2003237298A AU2003237298A1 (en) 2002-05-29 2003-05-29 Image rejection quadratic filter

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US38428302P 2002-05-29 2002-05-29
US60/384,283 2002-05-29

Publications (2)

Publication Number Publication Date
WO2003103131A2 WO2003103131A2 (en) 2003-12-11
WO2003103131A3 true WO2003103131A3 (en) 2004-08-12

Family

ID=29712002

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2003/017089 Ceased WO2003103131A2 (en) 2002-05-29 2003-05-29 Image rejection quadratic filter

Country Status (6)

Country Link
US (1) US7116961B2 (en)
EP (1) EP1514346A2 (en)
JP (1) JP2005536080A (en)
CN (1) CN1656678A (en)
AU (1) AU2003237298A1 (en)
WO (1) WO2003103131A2 (en)

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JP2005534203A (en) * 2001-10-16 2005-11-10 株式会社ＲｆＳｔｒｅａｍ Method and apparatus for implementing a receiver on a monolithic integrated circuit
CN100433542C (en) * 2002-06-05 2008-11-12 Rf信息公司 Quadratic video demodulation with baseband nyquist filter
US6940365B2 (en) 2003-07-18 2005-09-06 Rfstream Corporation Methods and apparatus for an improved discrete LC filter
US7457605B2 (en) * 2004-09-10 2008-11-25 Silicon Laboratories, Inc. Low noise image reject mixer and method therefor
US7358795B2 (en) * 2005-03-11 2008-04-15 Rfstream Corporation MOSFET temperature compensation current source
US20060217095A1 (en) * 2005-03-11 2006-09-28 Takatsuga Kamata Wideband tuning circuit
US7446631B2 (en) 2005-03-11 2008-11-04 Rf Stream Corporation Radio frequency inductive-capacitive filter circuit topology
WO2007052717A1 (en) * 2005-11-07 2007-05-10 Matsushita Electric Industrial Co., Ltd. Image suppression receiver
DE102005056486A1 (en) * 2005-11-20 2007-05-31 Atmel Germany Gmbh Input filter for image rejection
US20070237273A1 (en) * 2006-03-02 2007-10-11 Seeteck Tan Complex filter with automatic tuning capabilities
KR20110065070A (en) * 2009-12-09 2011-06-15 삼성전자주식회사 Mixer and RF Receiver Using the Same

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US6226509B1 (en) * 1998-09-15 2001-05-01 Nortel Networks Limited Image reject mixer, circuit, and method for image rejection
WO2001028310A2 (en) * 1999-10-21 2001-04-26 Broadcom Corporation An adaptive radio transceiver

Also Published As

Publication number Publication date
JP2005536080A (en) 2005-11-24
CN1656678A (en) 2005-08-17
US7116961B2 (en) 2006-10-03
AU2003237298A1 (en) 2003-12-19
EP1514346A2 (en) 2005-03-16
AU2003237298A8 (en) 2003-12-19
WO2003103131A2 (en) 2003-12-11
US20050143039A1 (en) 2005-06-30

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