Title

Wideband Digital Downconverters for Synthetic Instrumentation

Authors

Authors

M. T. Hunter; W. B. Mikhael;A. G. Kourtellis

Comments

Authors: contact us about adding a copy of your work at STARS@ucf.edu

Abstract

In this paper, we introduce a new wideband digital downconverter (WDDC) for synthetic instruments (SIs). DDCs first tune to a signal's center frequency using a numerically controlled oscillator and mixer and then zoom-in to the bandwidth of interest using sample rate conversion (SRC). The SRC is required to produce continuously variable output sample rates from a fixed input sample rate over a large range. Current implementations accomplish this using a prefilter, an arbitrary factor resampler, and integer decimation filters. In this paper, we simplify the SRC of the WDDC, yielding a reduction in computational cost by a factor of 3 or more.

Journal Title

Ieee Transactions on Instrumentation and Measurement

Volume

58

Issue/Number

2

Publication Date

1-1-2009

Document Type

Article

First Page

263

Last Page

269

WOS Identifier

WOS:000262428800005

ISSN

0018-9456

Share

COinS