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A broadband polynomial predistorter for reconfigurable radio

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

Original languageEnglish
Title of host publicationVehicular Technology Conference 2001 (VTC 2001-Spring), Rhodes
Publisher or commissioning bodyInstitute of Electrical and Electronics Engineers (IEEE)
Pages1968 - 1972
Number of pages5
ISBN (Print)0780367286
StatePublished - May 2001
Event53rd Vehicular Technology Conference 2001 (VTC 2001-Spring) - Rhodes, Greece


Conference53rd Vehicular Technology Conference 2001 (VTC 2001-Spring)
Period1/05/01 → …


An analogue polynomial predistorter working at RF is presented. It is capable of operating at multiple frequency bands over a wide linearisation bandwidth. These are important features for a reconfigurable radio application. The technique approximates the inverse of the amplifier transfer function up to third-order (cubic) nonlinearity by using polynomial functions. Theoretical analysis shows that the performance of the technique is limited more by the generation of additional fifth-order IMD (IM5), than the gain and phase matching of the predistorter. The measured two-tone tests at different frequency bands show 13 dB suppression of third-order IMD (IM3) is possible over 40 MHz tone separation. A 30 dB IM3 reduction can be achieved by increasing the IM5 by 9 dB. The research will continue by extending the predistorter to include higher orders of nonlinearity for a larger improvement in IMD suppression.

Additional information

Conference Proceedings/Title of Journal: IEEE 53rd Vehicular Technology Conference, 2001 (VTC 2001-Spring) Rose publication type: Conference contribution Terms of use: Copyright © 2001 IEEE. Reprinted from Proceedings of IEEE 53rd Vehicular Technology Conference, 2001. 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 By choosing to view this document, you agree to all provisions of the copyright laws protecting it.

    Research areas

  • amplifiers


53rd Vehicular Technology Conference 2001 (VTC 2001-Spring)

Duration1 May 2001 → …

Event: Conference

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