Sampled-Data Image-Rejection Receiver

  • Kong-Pang Pun
  • José Epifânio da Franca
  • Carlos Azeredo-Leme
Chapter
Part of the The Springer International Series in Engineering and Computer Science book series (SECS, volume 728)

Abstract

In this chapter, we will address the applications of switched-capacitor (SC) Hilbert transformers which are presented in the previous chapter. The main function of SC Hilbert transformers is wideband 90° phase shifting. Remember that a 90° phase shifter is required in Hartley image rejection receiver for performing on-chip image rejection. Ideally, complete image cancellation can be achieved in a Hartley receiver. However, due to mismatches between I and Q paths and phase-shifting error in the 90° phase shifter, the receiver offers limited image rejection performance. Only up to about 35 dB of image rejection ratio (IRR) has been reported [1, 2, 3, 4].

Keywords

Hilbert Transformer Image Interferer Unit Capacitor Operational Transconductance Amplifier Image Rejection 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media Dordrecht 2003

Authors and Affiliations

  • Kong-Pang Pun
    • 1
  • José Epifânio da Franca
    • 2
  • Carlos Azeredo-Leme
    • 3
  1. 1.The Chinese University of Hong KongHong KongChina
  2. 2.Chipldea Microelectronics S.A.Portugal
  3. 3.Instituto Superior TécnicoLisbonPortugal

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