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CLC number: TN722
On-line Access: 2024-08-27
Received: 2023-10-17
Revision Accepted: 2024-05-08
Crosschecked: 2023-05-17
Cited: 0
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A novel topology with controllablewideband baseband impedance for power amplifiers
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Yao YAO, Zhijiang DAI, Mingyu LI. A novel topology with controllablewideband baseband impedance for power amplifiers[J]. Frontiers of Information Technology & Electronic Engineering, 2024, 25(2): 308-315.
@article{title="A novel topology with controllablewideband baseband impedance for power amplifiers",
author="Yao YAO, Zhijiang DAI, Mingyu LI",
journal="Frontiers of Information Technology & Electronic Engineering",
volume="25",
number="2",
pages="308-315",
year="2024",
publisher="Zhejiang University Press & Springer",
doi="10.1631/FITEE.2300074"
}
%0 Journal Article
%T A novel topology with controllablewideband baseband impedance for power amplifiers
%A Yao YAO
%A Zhijiang DAI
%A Mingyu LI
%J Frontiers of Information Technology & Electronic Engineering
%V 25
%N 2
%P 308-315
%@ 2095-9184
%D 2024
%I Zhejiang University Press & Springer
%DOI 10.1631/FITEE.2300074
TY - JOUR
T1 - A novel topology with controllablewideband baseband impedance for power amplifiers
A1 - Yao YAO
A1 - Zhijiang DAI
A1 - Mingyu LI
J0 - Frontiers of Information Technology & Electronic Engineering
VL - 25
IS - 2
SP - 308
EP - 315
%@ 2095-9184
Y1 - 2024
PB - Zhejiang University Press & Springer
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DOI - 10.1631/FITEE.2300074
Abstract: This paper presents a novel topology to control the baseband impedance of a power amplifier (PA) to avoid performance deterioration in concurrent dual-band mode. This topology can avoid pure resonance of capacitors and inductors LC, which leads to a high impedance at some frequency points. Consequently, it can be applied to transmitters that are excited by broadband signals. In particular, by adjusting the circuit parameters and increasing stages, the impedance of the key frequency bands can be flexibly controlled. A PA is designed to support this design idea. Its saturated output power is around 46.7 dBm, and the drain efficiency is >68.2% (1.8–2.3 GHz). Under concurrent two-tone excitation, the drain efficiency reaches around 40% even under 5.5 dB back-off power with the tone spacing from 10 MHz to 500 MHz. These results demonstrate that the proposed topology is capable of controlling wideband baseband impedance.
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