A single bit-narrow-band bandpass digital filter

Thompson, A, Hussain, Z and O'Shea, P 2005, 'A single bit-narrow-band bandpass digital filter', Australian Journal of Electrical and Electronics Engineering, vol. 2, no. 1, pp. 31-40.


Document type: Journal Article
Collection: Journal Articles

Title A single bit-narrow-band bandpass digital filter
Author(s) Thompson, A
Hussain, Z
O'Shea, P
Year 2005
Journal name Australian Journal of Electrical and Electronics Engineering
Volume number 2
Issue number 1
Start page 31
End page 40
Total pages 9
Publisher Institution of Engineers, Australia
Abstract An efficient structure for single-bit bandpass bit-stream filtering is presented. This structure contains only one multiplication arithmetic found in traditional filtering operations, whilst producing a filtered single-bit output. This work is built on a previous work by the authors where a low-pass ternary filter has been designed; the filter contains an efficient ternary filter cascaded with a recursive sigma-delta filter. The theme of these works has been to efficiently and simply filter signals using single-bit signal processing techniques. Keeping with this theme we propose in this work a bandpass single-bit filter that consists of a ternary finite-impulse-response (FIR) filter and a sigma-delta modulator, both designed to operate in the bandpass mode. As the ternary filter produces a multi-bit output, a sigma-delta modulator is necessary to remodulate the filtered signal back into the signal-bit format.
Subject Signal Processing
Copyright notice © 2006 Copyright Engineers Australia
ISSN 1448-837x
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