High efficiency 5GHz CMOS power amplifier with adaptive bias control circuit

2004 ◽  
Author(s):  
YunSeong Eo ◽  
KwangDu Lee
Keyword(s):  
Power Amplifier ◽  
High Efficiency ◽  
Control Circuit

High-efficiency inverse class-F power amplifier using 3/4 spiral symmetric defected ground structure

2011 ◽  
Vol 3 (6) ◽  
pp. 621-625
Author(s):  
Shilei Jin ◽  
Jianyi Zhou ◽  
Lei Zhang
Keyword(s):  
Power Amplifier ◽  
High Performance ◽  
High Efficiency ◽  
Control Circuit ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Power Added Efficiency ◽  
Harmonic Control ◽  
Resonance Frequencies ◽  
Class F

In this article, the development of a high-efficiency power amplifier (PA) with the inverse class-F configuration and a novel 3/4 spiral defected ground structure (DGS) is presented. The proposed DGS structure has improved rejection characteristic and its resonance frequencies are more convenient to adjust than conventional symmetric and asymmetric spiral structure. The electromagnetic-simulated result shows that the proposed circuit has improved harmonic control performance with simplified structure and less return loss than the conventional microstrip harmonic control circuit. The 3/4 spiral harmonics control circuit (HCC) can be modeled by three parallel RLC resonators. Using the proposed structure a high-performance harmonic control circuit is designed for implementing an inverse class-F PA. For comparison, two inverse class-F PAs operating at 2.4 GHz have been implemented by the microstrip HCC and the proposed HCC, respectively. According to the experiment results, the size of the proposed inverse class-F PA is reduced by 20%, the power-added efficiency and the gain are increased by 4.8% and 1.5 dB, respectively.

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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