Abstract
This paper presents an analysis of the optimal Z f0 load trajectories of saturated GaN PAs through Z f0 and Z 2f0 load-pull measurements under constant input power on a 900 MHz 10 W PA. It is shown that a DE >50% at 10 dB back-off can be obtained for a range of 160 ? of Z 2f0 when Z f0 is set to its optimal point. The black box combiner design equations are used as a tool to determine the complete outphasing load trajectories for outphasing systems designed for different back-off levels and extract drain efficiency performance for a range of Z 2f0 terminations. When the suboptimal outphasing load trajectories are considered, Z 2f0 is demonstrated to have a greater impact compared to the case Z f0 follows the optimal load trajectories.
Original language | English |
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Title of host publication | 2018 Asia-Pacific Microwave Conference, APMC 2018 - Proceedings |
Publisher | Institute of Electrical and Electronics Engineers (IEEE) |
Pages | 58-60 |
Number of pages | 3 |
Volume | 2018-November |
ISBN (Electronic) | 9784902339451 |
ISBN (Print) | 9781538621844 |
DOIs | |
Publication status | Published - 17 Jan 2019 |
Event | 30th Asia-Pacific Microwave Conference, APMC 2018 - Kyoto, Japan Duration: 6 Nov 2018 → 9 Nov 2018 |
Conference
Conference | 30th Asia-Pacific Microwave Conference, APMC 2018 |
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Country/Territory | Japan |
City | Kyoto |
Period | 6/11/18 → 9/11/18 |
Keywords
- Harmonically tuned PAs
- Outphasing