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Resonant tunnelling delta sigma modulator suitable for high-speed operation

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4 Author(s)
K. Maezawa ; Graduate Sch. of Eng., Nagoya Univ., Japan ; M. Sakou ; W. Matsubara ; T. Mizutani

A resonant tunnelling logic gate, monostable-bistable transition logic element (MOBILE), was used to test high frequency operation of the ΔΣ modulator based on a frequency modulated intermediate signal. This ΔΣ modulator has no feedback loop and is promising for high-speed operation. Good noise shaping characteristics over four decades were measured. This ideal noise shaping demonstrated that the MOBILE can work as an ideal quantiser.

Published in:

Electronics Letters  (Volume:42 ,  Issue: 2 )