Mixer linearisation for software defined radio applications

T Nesimoglu, MA Beach, JR MacLeod, PA Warr

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

4 Citations (Scopus)
353 Downloads (Pure)


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.
Translated title of the contributionMixer linearisation for software defined radio applications
Original languageEnglish
Title of host publicationVehicular Technology Conference 2002 (VTC 2002-Fall)
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages534 - 538
Number of pages5
ISBN (Print)0780374673
Publication statusPublished - Sep 2002
Event56th Vehicular Technology Conference 2002 (VTC 2002-Fall) - Vancouver, Canada
Duration: 1 Sep 2002 → …


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

Bibliographical note

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.

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

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