A 70-W Asymmetrical Doherty Power Amplifier for 5G Base Stations
| Autor: | Jack Brunning, Yasir I. A. Al-Yasir, Ashwain Rayit, Raed A. Abd-Alhameed, Neil J. McEwan, Nabeel Abduljabbar, Ahmed M. Abdulkhaleq, Naser Ojaroudi Parchin, James M. Noras |
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| Rok vydání: | 2018 |
| Předmět: |
060102 archaeology
business.industry Frequency band Computer science Amplifier Transistor Bandwidth (signal processing) Electrical engineering 020206 networking & telecommunications 06 humanities and the arts 02 engineering and technology law.invention LTE Advanced Base station law 0202 electrical engineering electronic engineering information engineering Wireless 0601 history and archaeology business Efficient energy use |
| Zdroj: | Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering ISBN: 9783030051945 BROADNETS |
| Popis: | Much attention has been paid to making 5G developments more energy efficient, especially in view of the need for using high data rates with more complex modulation schemes within a limited bandwidth. The concept of the Doherty power amplifier for improving amplifier efficiency is explained in addition to a case study of a 70 W asymmetrical Doherty power Amplifier using two GaN HEMTs transistors with peak power ratings of 45 W and 25 W. The rationale for this choice of power ratio is discussed. The designed circuit works in the 3.4 GHz frequency band with 200 MHz bandwidth. Rogers RO4350B substrate with dielectric constant er = 4.66 and thickness 0.035 mm is used. The performance analysis of the Doherty power amplifier is simulated using AWR MWO software. The simulated results showed that 54–64% drain efficiency has been achieved at 8 dB back-off within the specified bandwidth with an average gain of 10.7 dB. |
| Databáze: | OpenAIRE |
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