24.4 A Watt-Level Multimode Multi-Efficiency-Peak Digital Polar Power Amplifier with Linear Single-Supply Class-G Technique

Signals for next-generation communication systems typically have high peak-to-average power ratios (PAPR) (e.g., 10 to 13dB), forcing operation at deep output power backoff (PBO). A good efficiency at PBO is required to maintain high average efficiency. Typical power amplifiers (PAs) demonstrate deg...

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Bibliographic Details
Published in2020 IEEE International Solid- State Circuits Conference - (ISSCC) pp. 368 - 370
Main Authors Yoo, Si-Wook, Hung, Shih-Chang, Yoo, Sang-Min
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.02.2020
Subjects
Capacitors
Computer architecture
Linearity
Microprocessors
Power combiners
Prototypes
Switches
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Summary:Signals for next-generation communication systems typically have high peak-to-average power ratios (PAPR) (e.g., 10 to 13dB), forcing operation at deep output power backoff (PBO). A good efficiency at PBO is required to maintain high average efficiency. Typical power amplifiers (PAs) demonstrate degraded efficiency at high PBO levels, which causes a significant degradation in efficiency, particularly for signals with high PAPR. Efficiency-enhancement techniques using digital PAs (DPAs) have been extensively introduced (e.g., Class-G, Doherty, etc.). DPAs have been shown to be great choices for efficiency enhancement at PBO, because each DPA cell can change the operating mode while switched OFF during the mode transitions, resulting in better linearity and seamless efficiency enhancement at PBO.
ISSN:2376-8606
DOI:10.1109/ISSCC19947.2020.9063069