An adaptive phase equalizer for minimum phase SAW filters

T. B. Wilborn, V. Hegde, S. Pai, William Kenneth Jenkins

Research output: Contribution to journalArticle

Abstract

Standing acoustic wave (SAW) filters are used in many types of digital receivers, a majority of which are wireless telephones. Most of these filters are designed to have a linear-phase response so that the transmitted pulse can pass through undisturbed while out-of-band noise and adjacent channels are rejected. If the linear-phase specification is removed, the potential exists for smaller and less expensive filters to replace their linear-phase counterparts. This paper describes one particular minimum-phase SAW filter which is suitable for use as the intermediate-frequency filter (IF) in a wideband spread-spectrum receiver. In order to correct for the phase nonlinearity of the SAW filter, a digital adaptive phase equalizer algorithm is proposed. The decision-directed algorithm (DDA) and constant modulus algorithm (CMA) are considered for automatic adjustment of the phase equalizer.

Original languageEnglish (US)
Pages (from-to)872-875
Number of pages4
JournalMidwest Symposium on Circuits and Systems
Volume2
DOIs
StatePublished - Jan 1 2000

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Wave filters
Equalizers
Acoustic waves
Telephone sets
Specifications

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

Cite this

Wilborn, T. B. ; Hegde, V. ; Pai, S. ; Jenkins, William Kenneth. / An adaptive phase equalizer for minimum phase SAW filters. In: Midwest Symposium on Circuits and Systems. 2000 ; Vol. 2. pp. 872-875.
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An adaptive phase equalizer for minimum phase SAW filters. / Wilborn, T. B.; Hegde, V.; Pai, S.; Jenkins, William Kenneth.

In: Midwest Symposium on Circuits and Systems, Vol. 2, 01.01.2000, p. 872-875.

Research output: Contribution to journalArticle

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