Design of a broadband and highly efficient 45W GaN power amplifier via simplified real frequency technique

A comprehensive approach for designing broadband and highly efficient power amplifier based on optimal impedance analysis and simplified real frequency technique (SRFT) is presented. Upon determining the impedances for highest efficiency across the bandwidth of interest, the SRFT is used to obtain t...

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Bibliographic Details
Published in2010 IEEE MTT-S International Microwave Symposium p. 1
Main Authors Wu, D., Mkadem, F., Boumaiza, S.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.05.2010
Subjects
Bandwidth
Broadband amplifiers
Frequency
Gallium nitride
High power amplifiers
Impedance
Multiaccess communication
Optimal matching
Power generation
Topology
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Summary:A comprehensive approach for designing broadband and highly efficient power amplifier based on optimal impedance analysis and simplified real frequency technique (SRFT) is presented. Upon determining the impedances for highest efficiency across the bandwidth of interest, the SRFT is used to obtain the optimal matching topology and element values. The effectiveness of this design technique is illustrated using a commercially available 45W GaN device which achieved an average drain efficiency of 63% from 1.9 GHz to 2.9 GHz (∼42%) with an average output power and gain of 45.8 dBm and 10.8 dB respectively. The PA with DPD yielded ACPR below −50dBc when driven with WCDMA and LTE at 2.14 and 2.6 GHz respectively
ISBN:1424460565
9781424460564
ISSN:0149-645X
2576-7216
DOI:10.1109/MWSYM.2010.5518045