Abstract
This paper presents the analysis and design of the Class-EM/F3 power amplifier (PA) with finite dc-feed inductance and isolation circuit. When compared to the classical Class-EM PA, the proposed PA offers a significantly lower peak drain voltage. The idealized voltage and current waveforms of the PA show that the main circuit fulfils the ZVS/ZVDS/ZCS/ZCDS conditions, thus minimizing power dissipation during OFF-to-ON (as in the Class-E) and ON-to-OFF (as in the Class-E-1) transitions. Closed-form design equations for the load-network parameters of the PA are derived and the analytical results are confirmed by harmonic-balance simulations. A circuit prototype, employing a transmission-line load-network was designed and implemented using GaN HEMTs. The constructed PA delivered a PAE of 85.4% and a Pout of 41.6 dBm at 1.25 GHz.
| Original language | English |
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| Title of host publication | 2020 International Workshop on Integrated Nonlinear Microwave and Millimetre-Wave Circuits (INMMiC): Proceedings |
| Publisher | Institute of Electrical and Electronics Engineers Inc. |
| Number of pages | 3 |
| ISBN (Electronic) | 9781728126456 |
| ISBN (Print) | 9781728126463 |
| DOIs | |
| Publication status | Published - 06 Aug 2020 |
| Event | International Workshop on Integrated Nonlinear Microwave and Millimetre-Wave Circuits - Virtual event, Cardiff, United Kingdom Duration: 16 Jul 2020 → 17 Jul 2020 https://inmmic.org/ |
Conference
| Conference | International Workshop on Integrated Nonlinear Microwave and Millimetre-Wave Circuits |
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| Abbreviated title | INMMIC 2020 |
| Country/Territory | United Kingdom |
| City | Cardiff |
| Period | 16/07/2020 → 17/07/2020 |
| Internet address |
Keywords
- Class EM, Class EM/F3, harmonic injection, high efficiency, power amplifier, ZCS, ZCDS, ZVS, ZVDS.