Proceedings of the IEEK Conference (대한전자공학회:학술대회논문집)

The Institute of Electronics and Information Engineers (대한전자공학회)
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A Four-quadrant Analog Multiplier Based on Switched-capacitor and Pulse-Width Amplitude Modulation Techniques

  • Siripruchyanun, Montree (Department of Teacher Training in Electrical Engineering, Faculty of Technical Education, King Mongkut′s Institute of Technology) ;
  • Wardkein, Paramote (Department of Telecommunication Engineering, Faculty of Engineering, King Mongkut′s Institute of Technology)
  • Published : 2002.07.01
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Abstract

This article proposes a Four-Quadrant Analog Multiplier (4-QAM) applying switched-capacitor and pulse-width amplitude modulation (PWAM) principles. The features of the presented circuit are that it can function as analog multiplier with a wide dynamic range of input signal and no disturbing from deviation of carrier frequency of PWM signal. In addition, the circuit detail is simpler than that of the previously proposed circuits. It is then easy and applicable for employing it into Integrated Circuit (IC) realization to especially operate in low-frequency and low-power applications. The experimental results granted are in correspondence to the theoretical analysis.

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