Divisional load-modulated balanced amplifier with extended dynamic power range

W Shi, X Li, C Hu, T Cai, G Naah, Z Dai… - IEEE Transactions …, 2022 - ieeexplore.ieee.org
With the prevalence of complex modulated signals, it is of utmost significance to research
the extension of the dynamic power range of radio frequency (RF) power amplifiers (PAs) …

Doherty power amplifier with extended high-efficiency range based on the utilization of multiple output power back-off parameters

YC Choi, W Choi, H Oh, Y Chen, J Shin… - IEEE Transactions …, 2022 - ieeexplore.ieee.org
This article presents a novel method of extending the high-efficiency range of Doherty power
amplifiers (DPAs) by utilizing multiple output power back-off (OBO) parameters. The OBO …

New load modulation combiner having a capability of back-off control for Doherty power amplifiers

Y Chen, W Choi, J Shin, H Jeon, S Bae, YC Choi… - IEEE …, 2023 - ieeexplore.ieee.org
A new load modulation combiner (LMC) having the capability of back-off control is proposed
for a Doherty power amplifier (DPA). The proposed LMC consists of two transmission lines …

Simplified all-in-one load network of the broadband Doherty power amplifier

Y Chen, W Choi, J Shin, H Jeon, S Bae… - IEEE Transactions …, 2024 - ieeexplore.ieee.org
A simplified all-in-one load network of Doherty power amplifier (DPA) was proposed for
extended back-off range and broadband operation in this study. Although the proposed load …

Generalized expression and design method of modified load networks for Doherty power amplifier with extended back-off range

Y Chen, W Choi, J Shin, H Jeon, S Bae, YC Choi… - IEEE …, 2022 - ieeexplore.ieee.org
This paper presents a generalized expression of the modified load networks (MLNs) for
Doherty power amplifiers (DPAs) with an extended output power back-off (OBO) range …

Load and frequency independent Doherty power amplifier back-off extension

F Dietrich, MD Wei, E Heidebrecht… - IEEE Transactions …, 2023 - ieeexplore.ieee.org
This article presents the principle of extending the back-off efficiency of a three-stage
Doherty power amplifier (DPA) by substituting the second load modulation stage using a …

A concurrent 2.6/3.5 GHz dual-band Doherty power amplifier with matching network based on composite right/left-handed unit cell

Y Luo, D Xuan, Z Wang, W Gao, W Yang… - IEICE Electronics …, 2021 - jstage.jst.go.jp
This paper presents a dual-band matching network based on composite right/left-handed
transmission line (CRLH-TL) unit cell to optimize the impedance matching of dual-band …

A 6-/12-dB back-off multi-mode GaN MMIC Doherty power amplifier for 5G applications

H Oh, W Choi, J Shin, Y Chen, H Kang… - 2023 IEEE/MTT-S …, 2023 - ieeexplore.ieee.org
This paper presents a multi-mode Doherty power amplifier (M-DPA) MMIC. By arranging the
turn-on transitions of four parallel amplifiers, two carrier and two peaking amplifiers (2C2P) …

Compact load network having a controlled electrical length for Doherty power amplifier

K Kwon, W Choi, J Shin, Y Chen, YC Choi, S Bae… - IEEE …, 2022 - ieeexplore.ieee.org
The load network of the carrier amplifier for the conventional Doherty power amplifier (DPA)
consists of an impedance matching circuit, an offset line, and a/4 transmission line (TL), so …

Broadband equal-cell Doherty power amplifier with extended back-off range based on asymmetrical voltage and nonlinear current profiles

Y Li, W Shi, K Liu, D Gan, Z Dai, J Pang, M Li - AEU-International Journal of …, 2024 - Elsevier
This paper proposes a generalized design methodology for extending the bandwidth and
output back-off range of an equal-cell Doherty power amplifier (EC-DPA). The parameters of …