A uneven Doherty power amplifier using anticoupled power divider and composite right/left-handed transmission lines

2010 ◽  
Vol 53 (2) ◽  
pp. 322-324
Author(s):  
Shiwei Zhao ◽  
Zongxi Tang ◽  
Yiwei Wu ◽  
Lifen Bao
Keyword(s):  
Power Amplifier ◽  
Transmission Lines ◽  
Power Divider ◽  
Left Handed ◽  
Doherty Power Amplifier

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 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

scholarly journals Linearity Improved Doherty Power Amplifier Using Composite Right/Left-Handed Transmission Lines

2008 ◽  
Vol 18 (8) ◽  
pp. 533-535 ◽  
Author(s):  
Seung Hun Ji ◽  
Sang Ki Eun ◽  
Choon Sik Cho ◽  
Jae W. Lee ◽  
Jaeheung Kim
Keyword(s):  
Power Amplifier ◽  
Transmission Lines ◽  
Left Handed ◽  
Doherty Power Amplifier

Compact Dual-Band Gysel Power Divider Based on Composite Right- and Left-Handed Transmission Lines

2015 ◽  
Vol 25 (2) ◽  
pp. 82-84 ◽  
Author(s):  
Xue Ren ◽  
Kaijun Song ◽  
Maoyu Fan ◽  
Yu Zhu ◽  
Bingkun Hu
Keyword(s):  
Transmission Lines ◽  
Power Divider ◽  
Dual Band ◽  
Left Handed

scholarly journals A Wide-Band High-Gain Doherty Power Amplifier With Class-AB HEMT Amplifiers

2021 ◽  
Author(s):  
Pouya Jahanian ◽  
Azadeh Norouzi Kangarshahi
Keyword(s):  
Power Amplifier ◽  
Transmission Lines ◽  
Average Power ◽  
Wide Band ◽  
High Gain ◽  
Input Power ◽  
Power Ratio ◽  
Class Ab ◽  
Power Added Efficiency ◽  
Doherty Power Amplifier

Abstract In this paper, an attempt has been made to design a Doherty power amplifier (DPA) with high-gain and wide-band. For this purpose, two peak amplifiers are used to improve the performance of the main amplifier. Main and auxiliary amplifiers with the same structure to the class-AB type and by using micro-strip lines in place of input/output and load matching networks, transmission lines and inductors of drain and gate, that minimize the losses in the DPA. The current DPA is implemented with GaN_HEMT_CLF1G0530_100v transistor and Rogers4003 substrate, which for 1GHz frequency in 0.5-1.5GHz bandwidth will be able to be at P-1dB point (this point, input power as 30dBm and output power as 47.98dBm) increase Drain efficiency and Power added efficiency (PAE) to 81.95% and 80.73%, respectively. The DPA helps to expand the back-off region and extend the linearity region, so the Peak to average power ratio (PAPR) will be 5.21dB and the Adjacent channel power ratio (ACPR) as 58.7dBc. A gain of 17.06-17.92dB was also obtained, which is significant compared to the results of similar samples.

A planner Doherty power amplifier with harmonic suppression with open and short ended stubs

Frequenz ◽  
2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Saeedeh Lotfi ◽  
Saeed Roshani ◽  
Sobhan Roshani ◽  
Maryam Shirzadian Gilan
Keyword(s):  
Power Amplifier ◽  
Power Divider ◽  
Harmonic Suppression ◽  
Power Added Efficiency ◽  
Main Amplifier ◽  
Inverse Topology ◽  
Doherty Power Amplifier ◽  
Amplifier Design ◽  
Doherty Amplifier ◽  
Class F

Abstract This paper presents a new Doherty power amplifier (DPA) with harmonics suppression. A Wilkinson power divider (WPD) with open-ended and short-ended stubs is designed to suppress unwanted signals. To design the power divider in the circuit of the DPA, even and odd mode analyses are utilized. The proposed design operates at range of 1.2–1.6 GHz. The linearity of the suggested DPA is increased about 6 dBm, in comparison with the main amplifier. The designed Doherty amplifier has a power added efficiency (PAE), drain efficiency (DE) and Gain about 60, 61% and 19 dB, respectively. The designed WPD suppresses 2nd up to 14th harmonics with more than 20 dB suppression level, which is useful for suppressing unwanted harmonics in DPA design. ATF-34143 transistors (pHEMT technology) are used for this DPA amplifier design. The main amplifier has class-F topology and class-F inverse topology is used for auxiliary amplifier.

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