Inverse Class-F Power Amplifier Using Composite Right/Left-Handed Transmission Lines as a Harmonic Trap

2006 ◽  
Author(s):  
Alexandre Dupuy ◽  
Kevin Leong ◽  
Robert Staraj ◽  
Gilles Jacquemod ◽  
Tatsuo Itoh
Keyword(s):  
Power Amplifier ◽  
Transmission Lines ◽  
Harmonic Trap ◽  
Left Handed ◽  
Class F

Compact Load Network for GaN-HEMT Doherty Power Amplifier IC Using Left-Handed and Right-Handed Transmission Lines

2017 ◽  
Vol 27 (3) ◽  
pp. 293-295 ◽  
Author(s):  
Hwiseob Lee ◽  
Wonseob Lim ◽  
Wooseok Lee ◽  
Hyunuk Kang ◽  
Jongseok Bae ◽  
...  
Keyword(s):  
Power Amplifier ◽  
Transmission Lines ◽  
Gan Hemt ◽  
Left Handed ◽  
Doherty Power Amplifier ◽  
Load Network

Design of a Miniaturized Class F Power Amplifier Using Capacitor Loaded Transmission Lines

Frequenz ◽  
2020 ◽  
Vol 74 (3-4) ◽  
pp. 145-152
Author(s):  
Ali Pirasteh ◽  
Saeed Roshani ◽  
Sobhan Roshani
Keyword(s):  
Power Amplifier ◽  
Mobile Communications ◽  
Transmission Lines ◽  
Low Voltage ◽  
Good Choice ◽  
Band Frequency ◽  
Power Added Efficiency ◽  
Harmonic Control ◽  
Measurement Results ◽  
Class F

AbstractIn this paper, a new method to decrease the dimensions of the microstrip structures and reducing the overall size of the class F amplifiers is presented. First, by using the PHEMT transistor with a conventional harmonic control circuit (HCC), a low-voltage class F amplifier in the L band frequency at the operating frequency of 1.75 GHz is introduced, which named primitive class F power amplifier. Then, this amplifier is optimized by using capacitor loaded transmission lines (CLTLs). The measurement results of the amplifier show that by using the CLTL structure, the overall size has been reduced 85% (0.23 λg × 0.17 λg). The maximum power-added efficiency (PAE) of the power amplifier is about 77.5 % and the power gain which has been reached to 18.33 dB. The desirable features of this power amplifier, along with its very small size, make this power amplifier a good choice to use for the global system for mobile communications.

DESIGN OF LINEARITY IMPROVED ASYMMETRICAL GAN DOHERTY POWER AMPLIFIER USING COMPOSITE RIGHT/LEFT-HANDED TRANSMISSION LINES

2013 ◽  
Vol 53 ◽  
pp. 89-106 ◽  
Author(s):  
Yunxuan Feng ◽  
Yuanan Liu ◽  
Cuiping Yu ◽  
Shulan Li ◽  
Jiuchao Li ◽  
...  
Keyword(s):  
Power Amplifier ◽  
Transmission Lines ◽  
Left Handed ◽  
Doherty Power Amplifier
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