A Discrete-Time Downsampling FIR Filter for Windowed Integration Samplers | Zendy

K. Raviprakash | Zendy; Mandar Kulkarni | Zendy; Xi Chen | Zendy; Sebastián Hoyos | Zendy; Brian M. Sadler | Zendy

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A Discrete-Time Downsampling FIR Filter for Windowed Integration Samplers

Author(s) -

K. Raviprakash,

Mandar Kulkarni,

Xi Chen,

Sebastián Hoyos,

Brian M. Sadler

Publication year - 2009

Publication title -

international journal of microwave science and technology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.125

H-Index - 11

eISSN - 1687-5834

pISSN - 1687-5826

DOI - 10.1155/2009/758783

Subject(s) - upsampling , filter (signal processing) , sinc function , sampling (signal processing) , algorithm , linearity , capacitance , capacitor , computer science , topology (electrical circuits) , mathematics , artificial intelligence , physics , electronic engineering , mathematical analysis , electrical engineering , engineering , combinatorics , voltage , computer vision , electrode , quantum mechanics , image (mathematics)

A novel technique to reduce die area on a discrete-time sinc2↓2 filter for charge sampling is proposed. An SNR comparison of the conventional and the proposed topology reveals that the new technique saves 25% die area occupied by the sampling capacitors of the filter. The idea is also extended to implement higher downsampling factors, and greater percentage of area is saved as the downsampling factor is increased. The proposed filter also has the topological advantage over previously reported works of allowing the designers to use active integration to charge the capacitance, which is critical in obtaining high linearity

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