A Doherty Power Amplifier with Large Back-Off Power Range Using Integrated Enhancing Reactance
Joint Authors
Zhu, Xiaowei
Kong, Wa
Xia, Jing
Meng, Fan
Yu, Chao
Yang, Lixia
Source
Wireless Communications and Mobile Computing
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-04-15
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Information Technology and Computer Science
Abstract EN
A symmetric Doherty power amplifier (DPA) based on integrated enhancing reactance (IER) was proposed for large back-off applications.
The IER was generated using the peaking amplifier with the help of a desired impedance transformation in the low-power region to enhance the back-off efficiency of the carrier amplifier.
To convert the impedances properly, both in the low-power region and at saturation, a two-impedance matching method was employed to design the output matching networks.
For verification, a symmetric DPA with large back-off power range over 2.2–2.5 GHz was designed and fabricated.
Measurement results show that the designed DPA has the 9 dB back-off efficiency of higher than 45%, while the saturated output power is higher than 44 dBm over the whole operation bandwidth.
When driven by a 20 MHz LTE signal, the DPA can achieve good average efficiency of around 50% with adjacent channel leakage ratio of about –50 dBc after linearization over the frequency band of interest.
The linearity improvement of the DPA for multistandard wireless communication system was also verified with a dual-band modulated signal.
American Psychological Association (APA)
Kong, Wa& Xia, Jing& Meng, Fan& Yu, Chao& Yang, Lixia& Zhu, Xiaowei. 2018. A Doherty Power Amplifier with Large Back-Off Power Range Using Integrated Enhancing Reactance. Wireless Communications and Mobile Computing،Vol. 2018, no. 2018, pp.1-8.
https://search.emarefa.net/detail/BIM-1215991
Modern Language Association (MLA)
Kong, Wa…[et al.]. A Doherty Power Amplifier with Large Back-Off Power Range Using Integrated Enhancing Reactance. Wireless Communications and Mobile Computing No. 2018 (2018), pp.1-8.
https://search.emarefa.net/detail/BIM-1215991
American Medical Association (AMA)
Kong, Wa& Xia, Jing& Meng, Fan& Yu, Chao& Yang, Lixia& Zhu, Xiaowei. A Doherty Power Amplifier with Large Back-Off Power Range Using Integrated Enhancing Reactance. Wireless Communications and Mobile Computing. 2018. Vol. 2018, no. 2018, pp.1-8.
https://search.emarefa.net/detail/BIM-1215991
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1215991