Abstract
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.
Translated title of the contribution | A broadband polynomial predistorter for reconfigurable radio |
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Original language | English |
Title of host publication | Vehicular Technology Conference 2001 (VTC 2001-Spring), Rhodes |
Publisher | Institute of Electrical and Electronics Engineers (IEEE) |
Pages | 1968 - 1972 |
Number of pages | 5 |
Volume | 4 |
ISBN (Print) | 0780367286 |
DOIs | |
Publication status | Published - May 2001 |
Event | 53rd Vehicular Technology Conference 2001 (VTC 2001-Spring) - Rhodes, Greece Duration: 1 May 2001 → … |
Conference
Conference | 53rd Vehicular Technology Conference 2001 (VTC 2001-Spring) |
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Country/Territory | Greece |
City | Rhodes |
Period | 1/05/01 → … |
Bibliographical note
Conference Proceedings/Title of Journal: IEEE 53rd Vehicular Technology Conference, 2001 (VTC 2001-Spring)Rose publication type: Conference contribution
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Keywords
- amplifiers