Hybrid continuous inverse class‐F high‐efficiency power amplifier based on phase shift analysis

Song, Kaijun; He, Aoke; Li, Qian

doi:10.1002/mop.33544

Cited by 4 publications

(1 citation statement)

References 32 publications

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“…To meet the requirements for wideband and high efficiency, continuous class mode PAs have garnered significant research attentions [12,13,14,15,16,17,18]. Although these designs can achieve high efficiency, the simplicity of the employed operating mode and the optimization targeting specific impedance values of limited feasible solution space, resulting in stringent optimization conditions and narrow bandwidth for the designed PAs [19,20,21,22].…”

Section: Introductionmentioning

confidence: 99%

High efficiency wideband continuous class power amplifier design based on reflection coefficient circle impedance area optimization

Kong,

Fu,

Xia

et al. 2024

IEICE Electron. Express

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This paper proposes a high-efficiency wideband continuous-class power amplifier (PA) optimizing the fundamental and harmonic impedance areas to achieve wideband and efficient operation. Unlike conventional impedance area constraint methods, reflection coefficient circles are used to characterize the desired fundamental and harmonic impedance areas, thereby increasing the number of feasible solutions in the output matching network (OMN) optimization. Additionally, a multi-objective algorithm is employed to optimize the OMN, enabling the PA to achieve high efficiency over wide frequency band. To validate the feasibility of the proposed method, a continuous-class PA operating in the frequency range of 1.5-2.6 GHz is designed and measured. The results demonstrate that the PA achieves a saturated output power of 40-41.5 dBm with a corresponding gain around 10 dB. Maximum efficiency ranging from 68% to 75% can be achieved within the operating frequency range.

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Section: Introductionmentioning

confidence: 99%

High efficiency wideband continuous class power amplifier design based on reflection coefficient circle impedance area optimization

Kong,

Fu,

Xia

et al. 2024

IEICE Electron. Express

View full text Add to dashboard Cite

show abstract

Design of a broadband high‐efficiency extended resistive continuous Class‐B/J power amplifier with novel drain voltage waveforms

He,

Dong,

Yang

et al. 2024

Micro & Optical Tech Letters

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This article presents an extended resistive continuous broadband Class‐B/J (ERCB/J) power amplifier (PA) that incorporates two newly designed parameters in the drain voltage waveform. The incorporation of these newly designed parameters enables the PA to achieve a lower degradation rate of efficiency and output power over a wide bandwidth. To validate the effectiveness of the proposed method, a PA was designed, fabricated, and measured. The PA adopting commercially available GaN high electron mobility transistor technology operates from 1.0 to 3.0 GHz, exhibiting a fractional bandwidth of 100%. Across this frequency range, the PA delivers more than 39.6 dBm of saturated output power and more than 62% of drain efficiency. The measured results show good agreement with theoretical analysis and simulation, confirming the validity of the proposed method.

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Design a wideband high‐efficiency continuous class‐GF power amplifier based on a source second harmonic manipulation architecture

Xuan,

Cheng,

Zhang

et al. 2024

Micro & Optical Tech Letters

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In this paper, a novel source second harmonic manipulation architecture achieving second harmonic control at device input is proposed to solve the issue of reduced operating efficiency of power amplifiers (PAs) caused by the input nonlinearity in continuous Class‐GF mode. The key to the proposed architecture lies in the use of a compact multibranch network to match the source second harmonics of the three design frequency points to the short‐circuit state, which can expand bandwidth while avoiding unexpected efficiency degradation. Considering the necessity of theoretical verification, a broadband continuous Class‐GF PA is designed, implemented, and assembled employing a commercially available 10‐W gallium nitride device. The measured results show that a fractional bandwidth of 100% across 1.1–3.3 GHz with a drain efficiency of 62.4%–72.5%, an output power of 40.1–42.2 dBm, and a gain of 10.1–12.2 dBm are achieved under saturated output power.

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Hybrid continuous inverse class‐F high‐efficiency power amplifier based on phase shift analysis

Cited by 4 publications

References 32 publications

High efficiency wideband continuous class power amplifier design based on reflection coefficient circle impedance area optimization

High efficiency wideband continuous class power amplifier design based on reflection coefficient circle impedance area optimization

Design of a broadband high‐efficiency extended resistive continuous Class‐B/J power amplifier with novel drain voltage waveforms

Design a wideband high‐efficiency continuous class‐GF power amplifier based on a source second harmonic manipulation architecture

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