Results 161 to 170 of about 128,571 (233)
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2015 IEEE MTT-S International Microwave Symposium, 2015
The Doherty power amplifier (DPA) architecture, in various formats using different technologies, has been a very popular means of providing high conversion efficiencies from raw electrical power to sophisticated modulated RF and microwave signals ever since the requirements for very high power amplitude modulated (AM) radio transmitters in the mid-1930'
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The Doherty power amplifier (DPA) architecture, in various formats using different technologies, has been a very popular means of providing high conversion efficiencies from raw electrical power to sophisticated modulated RF and microwave signals ever since the requirements for very high power amplitude modulated (AM) radio transmitters in the mid-1930'
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Broadband GaAs HBT Doherty Power Amplifier for 5G NR Mobile Handset
IEEE Transactions on Circuits and Systems - II - Express BriefsThis brief proposes a broadband flat-gain Doherty power amplifier (DPA) for 5G new radio (NR) mobile handsets. It is implemented by the heterogeneous integration of GaAs HBT process for PA die and 6-layer laminate for output network.
Shaofei Bo +5 more
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A Highly-Efficient Doherty Power Amplifier With Generalized Parallel-Circuit Class-EF Mode
IEEE Transactions on Circuits and Systems - II - Express Briefs, 2023In this brief, a highly-efficient Doherty power amplifier (DPA) architecture with generalized parallel-circuit class-EF mode is proposed. With this topology, the ideal harmonic impedance conditions at the deep power back-off (PBO) region and saturation ...
Chang Liu, Xiang Li, F. Ghannouchi
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Voltage Mode Doherty Power Amplifier
IEEE Journal of Solid-State Circuits, 2017This paper presents a new wideband Doherty amplifier technique that can achieve high efficiency while maintaining excellent linearity. By modifying a “forgotten” topology originally proposed by Doherty, a new Doherty amplifier architecture is realized with two voltage mode power amplifiers (PAs) and transformers, thus eliminating a narrowband impedance
Voravit Vorapipat +2 more
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IEEE transactions on microwave theory and techniques
This article proposes a new method to improve the linearity of millimeter-wave (mm-wave) gallium nitride (GaN) Doherty power amplifier (DPA) while maintaining high efficiency.
Xiaohu Fang +5 more
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This article proposes a new method to improve the linearity of millimeter-wave (mm-wave) gallium nitride (GaN) Doherty power amplifier (DPA) while maintaining high efficiency.
Xiaohu Fang +5 more
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Dual-Band Dual-Output Doherty Power Amplifier for Unsynchronized Time-Division Duplexing
IEEE transactions on microwave theory and techniques, 2023Conventional multiband power amplifiers (PAs), when working in time-division duplex (TDD), require the transmit–receive intervals of all bands to be synchronized. This is an undesirable constraint in modern radio base stations.
P. Saad +3 more
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IEEE International Solid-State Circuits Conference
A beamforming phased-array has become an indispensable configuration in 5 G new-radio (NR) frequency-range-2 (FR2) cellular communications to boost an equivalent isotropic radiated power.
Hansik Oh +21 more
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A beamforming phased-array has become an indispensable configuration in 5 G new-radio (NR) frequency-range-2 (FR2) cellular communications to boost an equivalent isotropic radiated power.
Hansik Oh +21 more
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A GaN MMIC Wideband Continuous-Mode Doherty Power Amplifier for 6G FR3 cmWave Applications
European Microwave Integrated Circuits ConferenceThis paper presents a 10−14 GHz Doherty power amplifier (PA) implemented in GaN on SiC MMIC process aimed for future 6G FR3 centimeter-wave (cmWave) applications.
Han Zhou +3 more
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A Broadband Four-Way Parallel–Series Doherty Power Amplifier for 5G Communications
IEEE Journal of Solid-State CircuitsThis article presents a four-way hybrid parallel–series Doherty power amplifier (PA) architecture that supports broadband operation and deep power back-off (PBO) efficiency enhancement for next-generation wireless communication.
E. Liu, Hua Wang
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A 3-Way GaN Doherty Power Amplifier for 28 GHz 5G FR2 Operation
Intelligent Memory Systems, 2023This paper presents the design, fabrication, and experimental characterization of a 3-way multi-stage Doherty amplifier working in the 5G NR FR2 bands centered at 28 GHz.
A. Piacibello +3 more
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