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A 2-GHz CMOS image-reject receiver with LMS calibration

Der, L ; Sharif University of Technology | 2003

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  1. Type of Document: Article
  2. DOI: 10.1109/JSSC.2002.807407
  3. Publisher: 2003
  4. Abstract:
  5. This paper describes a sign-sign least-mean squares (LMS) technique to calibrate gain and phase errors in the signal path of a Weaver image-reject receiver. The calibration occurs at startup and the results are stored digitally, allowing continuous signal reception thereafter. Fabricated in a standard digital 0.25-μm CMOS technology, the receiver achieves an image-rejection ratio of 57 dB after calibration, a noise figure of 5.2 dB, and a third-order input intercept point of -17 dBm. The circuit consumes 55 mW in calibration mode and 50 mW in normal receiver mode from a 2.5-V power supply. The prototype occupies an area of 1.23 × 1.84 mm2
  6. Keywords:
  7. Digital-to-analog conversion ; Image rejection ; Least mean square (LMS) calibration ; Low-noise amplifier ; Mixer ; Radio frequency (RF) CMOS ; Variable-delay circuit
  8. Source: IEEE Journal of Solid-State Circuits ; Volume 38, Issue 2 , 2003 , Pages 167-175 ; 00189200 (ISSN)
  9. URL: https://ieeexplore.ieee.org/document/1175495