30.3% PAE HBT Doherty power amplifier for 2.5&amp;#x223C;2.7 GHz mobile WiMAX

Kang, Daehyun; Choi, Jinsung; Kim, Dong–Su; Yu, Daekyu; Min, Kyoungjoon; Kim, Bumman

doi:10.1109/mwsym.2010.5517709

Cited by 13 publications

(2 citation statements)

References 13 publications

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“…For instance, outstanding performances have been obtained by properly controlling the higher harmonics [2]- [7]. Solutions for size reduction and to allow MMIC realization, even at lower frequencies, have been showed as well [5]. Besides, new circuit topologies have been proposed to improve DPA features such as: DPA with dual-band capabilities [8], DPA with a series-connected load [9], digitally driven dual-input DPA [10] and inverted DPA [12].…”

Section: Introductionmentioning

confidence: 99%

Evaluating GaN Doherty architectures for 4G Picocells, WiMax and microwave backhaul links

Giofrè

Piazzon

Colantonio

et al. 2014

2014 IEEE 11th International Multi-Conference on Systems, Signals &Amp; Devices (SSD14)

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This paper evaluates the Doherty power amplifier architecture in terms of linearity, efficiency and design solutions. As case study four different prototypes are presented, one for 4G Picocells at 2.1 GHz, one for WiMax applications at 3.5 GHz and two for point-to-point microwave backhaul radiolinks at 7 GHz. Experimental results together with design guidelines are discussed addressing strengths and weaknesses of the Doherty architecture.

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Section: Introductionmentioning

confidence: 99%

Evaluating GaN Doherty architectures for 4G Picocells, WiMax and microwave backhaul links

Giofrè

Piazzon

Colantonio

et al. 2014

2014 IEEE 11th International Multi-Conference on Systems, Signals &Amp; Devices (SSD14)

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“…In [11], the focus is on the use of non-conventional output combining stages, while [12] presents a method applying to broadband matching the simplified real frequency technique. Finally [13] focuses on input direct coupling of main and peak branches and wideband output matching.…”

Section: Introductionmentioning

confidence: 99%

3–3.6-GHz Wideband GaN Doherty Power Amplifier Exploiting Output Compensation Stages

Rubio

Fang

Camarchia

et al. 2012

IEEE Trans. Microwave Theory Techn.

135

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We discuss the design, realization and experimental characterization of a GaN-based hybrid Doherty power amplifier for wideband operation in the 3-3.6 GHz frequency range. The design adopts a novel, simple approach based on wideband compensator networks. Second-harmonic tuning is exploited for the main amplifier at the upper limit of the frequency band, thus improving gain equalization over the amplifier bandwidth. The realized amplifier is based on a packaged GaN HEMT, and shows, at 6 dB of output power back-off, a drain efficiency higher than 38 % in the 3-3.6 GHz band, gain around 10 dB, and maximum power between 43 dBm and 44 dBm, with saturated efficiency between 55 % and 66 %. With respect to the state of the art, we obtain, at a higher frequency, a wideband amplifier with similar performances in terms of bandwidth, output power, and efficiency, through a simpler approach. Moreover, the measured constant maximum output power of 20 W suggests that the power utilization factor of the 10 W (Class A) GaN HEMT is excellent over the amplifier band.

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A compact power amplifier based on a 5 W GaN HEMT in S-band application

Ban

Liu

2020

2020 9th Asia-Pacific Conference on Antennas and Propagation (APCAP)

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30.3% PAE HBT Doherty power amplifier for 2.5∼2.7 GHz mobile WiMAX

Cited by 13 publications

References 13 publications

Evaluating GaN Doherty architectures for 4G Picocells, WiMax and microwave backhaul links

Evaluating GaN Doherty architectures for 4G Picocells, WiMax and microwave backhaul links

3–3.6-GHz Wideband GaN Doherty Power Amplifier Exploiting Output Compensation Stages

A compact power amplifier based on a 5 W GaN HEMT in S-band application

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