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Mixer linearisation for software defined radio applications

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Original languageEnglish
Title of host publicationVehicular Technology Conference 2002 (VTC 2002-Fall)
Publisher or commissioning bodyInstitute of Electrical and Electronics Engineers (IEEE)
Publication dateSep 2002
Pages534 - 538
Number of pages5
Volume1
ISBN (Print)0780374673
DOIs
StatePublished

Conference

Conference56th Vehicular Technology Conference 2002 (VTC 2002-Fall)
CountryCanada
CityVancouver
Period1/09/02 → …

Abstract

The inherent non-linearity of mixers is particularly acute in broadband receiver design for software defined radio (SDR) applications. Here, the receiver frontend ‘sees’ not only the wanted channel, but also a number of nearby signals. A conventional mixer will downconvert all of these received channels to IF, thus adding inband interference to the wanted channel. In this paper, known mixer linearisation schemes are explained and a new technique using frequency retranslation within a linearised mixer architecture is presented. Two-tone-test results from a prototype offered 33dB reduction in the distortion products and 22dB suppression of adjacent channel interference (ACI) for a π/4-DQPSK modulated carrier. A theoretical analysis is also carried out to demonstrate the amplitude and phase matching requirements of the technique.

Additional information

Conference Proceedings/Title of Journal: IEEE 56th Vehicular Technology Conference, 2002 (VTC 2002-Fall) Rose publication type: Conference contribution Sponsorship: This paper is based upon work performed within the framework of the IST project IST-1999-12070 TRUST, partly funded by the European Union. Terms of use: Copyright © 2002 IEEE. Reprinted from Proceedings of IEEE Vehicular Technology Conference, Fall 2002. This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of the University of Bristol's products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to pubs-permissions@ieee.org. By choosing to view this document, you agree to all provisions of the copyright laws protecting it.

Research areas

  • mixer linearisation, SDR receiver frontend, feedforward, signal cancellation, frequency retranslation

Event

56th Vehicular Technology Conference 2002 (VTC 2002-Fall)

Duration1 Sep 2002 → …
CountryCanada
CityVancouver

Event: Conference

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