2026-05-24T03:55:18Zhttps://keep.lib.asu.edu/oai/requestoai:keep.lib.asu.edu:node-1568862024-12-20T18:25:12Zoai_pmh:alloai_pmh:repo_items156886
https://hdl.handle.net/2286/R.I.51661
http://rightsstatements.org/vocab/InC/1.0/
2018
72 pages
Masters Thesis
Academic theses
Text
eng
BHARDWAJ, SUMIT
Kitchen, Jennifer
Bakkaloglu, Bertan
Ozev, Sule
Arizona State University
Masters Thesis Electrical Engineering 2018
This work covers the design and implementation of a Parallel Doherty RF Power Amplifier in a GaN HEMT process for medium power macro-cell (16W) base station applications. This work improves the key parameters of a Doherty Power Amplifier including the peak and back-off efficiency, operational instantaneous bandwidth and output power by proposing a Parallel Doherty amplifier architecture.<br/><br/>As there is a progression in the wireless communication systems from the first generation to the future 5G systems, there is ever increasing demand for higher data rates which means signals with higher peak-to-average power ratios (PAPR). The present modulation schemes require PAPRs close to 8-10dB. So, there is an urgent need to develop energy efficient power amplifiers that can transmit these high data rate signals.<br/><br/>The Doherty Power Amplifier (DPA) is the most common PA architecture in the cellular infrastructure, as it achieves reasonably high back-off power levels with good efficiency. This work advances the DPA architecture by proposing a Parallel Doherty Power Amplifier to broaden the PAs instantaneous bandwidth, designed with frequency range of operation for 2.45 – 2.70 GHz to support WiMAX applications and future broadband signals.
Electrical Engineering
Parallel Doherty RF Power Amplifier For WiMAX Applications