GB201102475D0 - Method of reducing offset - Google Patents

Method of reducing offset

Info

Publication number
GB201102475D0
GB201102475D0 GBGB1102475.9A GB201102475A GB201102475D0 GB 201102475 D0 GB201102475 D0 GB 201102475D0 GB 201102475 A GB201102475 A GB 201102475A GB 201102475 D0 GB201102475 D0 GB 201102475D0
Authority
GB
United Kingdom
Prior art keywords
reducing offset
offset
reducing
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Withdrawn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
GBGB1102475.9A
Other versions
GB2487973A (en
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.)
Elonics Ltd
Original Assignee
Elonics 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 Elonics Ltd filed Critical Elonics Ltd
Priority to GB201102475A priority Critical patent/GB2487973A/en
Publication of GB201102475D0 publication Critical patent/GB201102475D0/en
Publication of GB2487973A publication Critical patent/GB2487973A/en
Withdrawn legal-status Critical Current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
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/30—Circuits for homodyne or synchrodyne receivers
    • 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
    • H03H11/1217—Frequency selective two-port networks using amplifiers with feedback using a plurality of operational amplifiers
    • H03H11/1234—Modifications to reduce detrimental influences of amplifier imperfections, e.g. limited gain-bandwith product, limited input impedance
    • 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
    • H03H11/1217—Frequency selective two-port networks using amplifiers with feedback using a plurality of operational amplifiers
    • H03H11/1252—Two integrator-loop-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
    • 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
    • H03H2011/0494—Complex filters
GB201102475A 2011-02-11 2011-02-11 Reduction of DC offsets in high gain cross-coupled IF active filters Withdrawn GB2487973A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB201102475A GB2487973A (en) 2011-02-11 2011-02-11 Reduction of DC offsets in high gain cross-coupled IF active filters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB201102475A GB2487973A (en) 2011-02-11 2011-02-11 Reduction of DC offsets in high gain cross-coupled IF active filters

Publications (2)

Publication Number Publication Date
GB201102475D0 true GB201102475D0 (en) 2011-03-30
GB2487973A GB2487973A (en) 2012-08-15

Family

ID=43859321

Family Applications (1)

Application Number Title Priority Date Filing Date
GB201102475A Withdrawn GB2487973A (en) 2011-02-11 2011-02-11 Reduction of DC offsets in high gain cross-coupled IF active filters

Country Status (1)

Country Link
GB (1) GB2487973A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9214972B2 (en) 2013-06-13 2015-12-15 Qualcomm Technologies International, Ltd. Method and apparatus for on-demand interference rejection in multi-band GNSS receivers

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2289823C (en) * 1999-11-15 2004-07-06 Philsar Semiconductor Inc. Complex filtering/agc radio receiver architecture for low-if or zero-if
US20030128068A1 (en) * 2001-08-16 2003-07-10 Farbod Behbahani Low noise image-reject gm-c filter
US7899431B2 (en) * 2005-04-04 2011-03-01 Freescale Semiconductor, Inc. DC offset correction system for a receiver with baseband gain control

Also Published As

Publication number Publication date
GB2487973A (en) 2012-08-15

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)