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Analysis of imperfections in N-phase high-Q band-pass filters

Nikoofard, A ; Sharif University of Technology | 2015

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  1. Type of Document: Article
  2. DOI: 10.1109/ISCAS.2015.7168623
  3. Publisher: Institute of Electrical and Electronics Engineers Inc , 2015
  4. Abstract:
  5. The effect of clock skew and duty-cycle on the performance of high-Q N-phase band-pass filters (BPFs) have been examined in this paper. Following a mathematical approach and using the analytical derivations carried out, the effects of such non-idealities as clock skew and duty-cycle error are determined in an N-path filter. It is analytically proved that image signals from all integer multiples of the clock signal, rather than just those at (1 ± kN) multiples of the clock signal, land atop the wanted RF spectrum. In a real world clock generator, with non-idealities in effect, filtering property and proper behavior of the filter is adversely affected. Finally, system level simulation along with circuit simulation using TSMC 0.18μm process have been performed which corroborate the proposed analytical derivations
  6. Keywords:
  7. Circuit simulation ; Clocks ; Electric clocks ; High pass filters ; Clock generator ; Duty cycle error ; Filtering properties ; High Q band pass filters ; Image signal ; Mathematical approach ; Non-idealities ; System level simulation ; Bandpass filters
  8. Source: IEEE International Symposium on Circuits and Systems, ISCAS 2015, 24 May 2015 through 27 May 2015 ; Volume 2015-July , May , 2015 , Pages 273-276 ; 02714310 (ISSN) ; 9781479983919 (ISBN)
  9. URL: http://ieeexplore.ieee.org/document/7168623/?arnumber=7168623