Results 181 to 190 of about 1,717 (209)
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Doherty power amplifier with feedforward linearization
2009 Asia Pacific Microwave Conference, 2009This paper presents a high efficiency feedforward power amplifier with Doherty technique for multi-carrier GSM base-station. The main Doherty power amplifier (DPA) was designed with third-order intermodulation distortion (IMD3) cancellation technique and tunable power division for optimized linearity and efficiency.
Yong-Bo Xiang, Guang-Ming Wang
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A Class-G Voltage-Mode Doherty Power Amplifier
IEEE Journal of Solid-State Circuits, 2017This paper presents the combination of two back-off efficiency enhancement techniques, the voltage-mode Doherty and the class-G switched-capacitor power amplifier (PA), to achieve efficiency peaking at both 6 and 12 dB back off without introducing the mode-switching glitches present in previous architectures. The proposed technique enables transmission
Voravit Vorapipat +2 more
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Investigation of the AM/pm distortion in Doherty Power Amplifiers
2014 IEEE Topical Conference on Power Amplifiers for Wireless and Radio Applications (PAWR), 2014In this paper, a theoretical investigation of the causes of the AM/PM distortion in Doherty Power Amplifiers is presented for the first time. The distortion sources are identified and a solution to mitigate the AM/PM conversion through the input termination of the Carrier amplifier is also highlighted.
PIAZZON, LUCA +3 more
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Doherty Linear Power Amplifiers for Mobile Handset Applications
2007 IEEE Radio and Wireless Symposium, 2006Two Doherty amplifiers are designed in MMIC form, which are fabricated using a commercial InGaP/GaAs HBT foundry process. The one is classical Doherty type amplifier with the size ratio of main device and auxiliary device of N=l, and the other is an extended Doherty with the size ratio of N=3. The input and output circuits are made using hybrid circuit,
null Bumman Kim +2 more
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Doherty power amplifier and GaN technology
2010In this paper, the features of GaN HEMT technology and Doherty Power Amplifier architecture will be investigated, as a possible answer for the stringent requirements of the next generation of wireless systems. In particular, the attention will be focused on the capabilities and the relevant drawbacks of a GaN HEMT technology when designing DPAs.
COLANTONIO, PAOLO +3 more
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High-efficiency Doherty power amplifiers
2021Andrei Grebennikov, Marc J. Franco
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Design of a Wideband Doherty Power Amplifier with High Efficiency for 5G Application
Electronics (Switzerland), 2021Abbas Nasri +2 more
exaly
A Modified Doherty Power Amplifier With Extended Bandwidth and Reconfigurable Efficiency
IEEE Transactions on Microwave Theory and Techniques, 2013David Gustafsson, Christian Fager
exaly