Title:
DEVICE AND METHOD FOR OFFSET COMPENSATION BASED ON HYSTERESIS TRACKING
Document Type and Number:
WIPO Patent Application WO/2010/020965
Kind Code:
A3
Abstract:
A signal processor for removing at least one unintended signal component from an input signal (ua) is proposed. The signal processor includes a filter device (130) and a processing device (150). The filter device (130) filters the input signal (uâ) and generates a filtered signal (uf), which includes the unintended signal component to be removed. The processing device (150) generates an output signal (um), which indicates a deviation of the input signal (ua) from the filtered input signal (uf). By detecting the unintended signal component first an removing this component from the input signal (uâ), the input signal will not be manipulated directly but the unintended signal component in the input signal (uâ) will be compensated. This allows to remove the unintended component from the input signal (uâ) with less distortions of the interesting components in the input signal (uâ).
Inventors:
KLABUNDE BORIS (DE)
BURZMANN STEFAN (DE)
BURZMANN STEFAN (DE)
Application Number:
PCT/IB2009/053693
Publication Date:
August 26, 2010
Filing Date:
August 21, 2009
Export Citation:
Assignee:
NXP BV (NL)
KLABUNDE BORIS (DE)
BURZMANN STEFAN (DE)
KLABUNDE BORIS (DE)
BURZMANN STEFAN (DE)
International Classes:
H03H19/00; H03K12/00; H03M1/12
Domestic Patent References:
| WO2002071621A2 | 2002-09-12 |
Foreign References:
| US4251785A | 1981-02-17 | |||
| US4922126A | 1990-05-01 | |||
| JP2008039583A | 2008-02-21 | |||
| GB2295512A | 1996-05-29 |
Other References:
LUCK J ET AL: "FIRST-ORDER, SWITCHED-CAPACITOR, LOW-PASS FILTER IMPLEMENTED WITH GAAS INSULATED-GATE FET SWITCHES", ELECTRONICS LETTERS, IEE STEVENAGE, GB, vol. 26, no. 22, 25 October 1990 (1990-10-25), pages 1843 - 1845, XP000171232, ISSN: 0013-5194
FENG CHEN ET AL: "A 0.25-mW Low-Pass Passive Sigma-Delta Modulator with Built-In Mixer for a 10-MHz IF Input", IEEE JOURNAL OF SOLID-STATE CIRCUITS, IEEE SERVICE CENTER, PISCATAWAY, NJ, US, vol. 32, no. 6, 1 June 1997 (1997-06-01), XP011060484, ISSN: 0018-9200
FENG CHEN ET AL: "A 0.25-mW Low-Pass Passive Sigma-Delta Modulator with Built-In Mixer for a 10-MHz IF Input", IEEE JOURNAL OF SOLID-STATE CIRCUITS, IEEE SERVICE CENTER, PISCATAWAY, NJ, US, vol. 32, no. 6, 1 June 1997 (1997-06-01), XP011060484, ISSN: 0018-9200
Attorney, Agent or Firm:
WILLIAMSON, Paul, L. et al. (IP DepartmentBetchworth House ,57-65 Station Road, Redhill Surrey RH1 1DL, GB)
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