Time Interleaving mixer

Speaker:  Hedieh Elyasi (ECE, Virginia Tech)

Date: Friday, April 18, 2014
Time: 3 PM - 4 PM
Location: Whittemore 6th Floor Conference Room 

Abstract:

This presentation proposes the noise analysis of single balanced mixer and time interleaving mixer array.  In M-element time interleaved arrays, the carrier frequency can be reduced by the factor of M to realize an equivalent functionality as in conventional phased arrays based on fundamental carrier modulations. Depending on the array configuration, the time interleaved phased array can be categorized as “correlated-noise time interleaved (CNTI)” array or “uncorrelated-noise time interleaved (UNTI)” array. In the CNTI-array both signal and correlated noise will be interleaved resulting in the same filter response for the signal and noise, whereas in the UNTI-array only signal will be interleaved in time domain: uncorrelated noise will not participate in the time interleaving process. Also noise filtering for improving SNR is proposed in this presentation.

Speaker:

Hedieh Elyasi was born in Sary, Iran, in 1986. She received the B.SC. degree from Shahid Behesti university, Tehran, Iran in 2008 and M.Sc. degree from Tarbiat Modares University, Tehran in 2011. Her master thesis was on design of a highly linear Ku-band Gilbert mixer. She joined Virginia Tech in spring 2013 as a PhD student. She is currently working on time interleaved carrier modulation and millimeter wave circuit design. Her research interest lies in millimeter-wave and RF IC design for wireless applications.