A Discrete-Time Downsampling FIR Filter for Windowed Integration Samplers
Abstract
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.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Mar 23, 2009
- Source ID
- 10.1155/2009/758783
Entities
People
- Brian M. Sadler
- Karthik Raviprakash
- Mandar Kulkarni
- Sebastian Hoyos
- Xi Chen
Organizations
- Texas A&M University
- United States Army Research Laboratory