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Two-path double delay line based bandpass quadrature ΣΔ modulator

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4 Author(s)
Nithin Kumar, Y.B. ; Dept. of Electr. & Electron., IIT Kharagpur, Kharagpur, India ; Bonizzoni, E. ; Patra, A. ; Maloberti, F.

A design technique for a double-delay based quadrature ΣΔ modulator is presented. The architecture uses a two-path scheme, which avoids mirror tones in the signal band and locks the intermediate frequency with the clock, thus avoiding the trimming requirement. The two-path architecture and time interleaving lead to an overall power reduction by a factor of 8.

Published in:

Electronics Letters  (Volume:47 ,  Issue: 24 )

Date of Publication:

November 24 2011

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