High-efficiency 400 W power amplifier with dynamic drain voltage control for 6 MHz OFDM signal

2010 ◽  
Author(s):  
S. Hiura ◽  
H. Sumi ◽  
H. Takahashi
Keyword(s):  
Power Amplifier ◽  
High Efficiency ◽  
Voltage Control ◽  
Drain Voltage ◽  
Ofdm Signal

A Constant Envelope OFDM Signal Generation Algorithm Based on Frequency Domain Noise Shaping

2014 ◽  
Vol 602-605 ◽  
pp. 3156-3159
Author(s):  
Qing Shui Gu ◽  
Chen Wei
Keyword(s):  
Power Amplifier ◽  
Time Domain ◽  
High Efficiency ◽  
Sampling Rate ◽  
Signal Generation ◽  
High Signal ◽  
Noise Shaping ◽  
Sigma Delta Modulation ◽  
Constant Envelope ◽  
Ofdm Signal

Presents a OFDM signal generation method which transforms general OFDM signal to constant envelope signal. Through out-of-band of original OFDM signal insertion synthetic noise signal, the composite signal in time domain is constant envelope, and in in-band can achieve a high signal-to-noise ratio. Simulations show that the method can be used in OFDM system to improve the efficiency of power amplifier. Simulations show that the method does not need too high sampling rate, at the same time there is no stability problems, compared to the high efficiency power amplifier based on time-domain Sigma-Delta modulation technology.

A High Efficiency Class-E Power Amplifier Over a Wide Power Range Using a Look-Up Table Based Dynamic Biasing Scheme

2015 ◽  
Vol E98.C (4) ◽  
pp. 377-379
Author(s):  
Jonggyun LIM ◽  
Wonshil KANG ◽  
Kang-Yoon LEE ◽  
Hyunchul KU
Keyword(s):  
Power Amplifier ◽  
High Efficiency ◽  
Look Up Table ◽  
Dynamic Biasing ◽  
Class E

Co-Designed High-Efficiency GaN Filter Power Amplifier

2020 ◽  
Author(s):  
Jose Antonio Estrada ◽  
Pedro de Paco ◽  
Seth Johannes ◽  
Dimitra Psychogiou ◽  
Zoya Popovic
Keyword(s):  
Power Amplifier ◽  
High Efficiency
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