Design of continuous high‐efficiency broadband linear power amplifier using two‐tone signal analysis

Tian, Qi; He, Songbai; Haider, Muhammad Furqan

doi:10.1002/mop.32048

Cited by 6 publications

(4 citation statements)

References 9 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

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show abstract

“…In order to meet the expanded bandwidth requirements, several broadband PAs, such as Class J [11,12,13], continuous class-F (CCF) [14,15,16] and continuous inverse class-F (CCF-1) [17,18,19,20] broadband PAs with improved harmonic control have been proposed. In [14], the theory of the CCF PA was studied with the model of the gate bias voltage, which provided greater impedance matching space for high-efficiency broadband PA design.…”

Section: Introductionmentioning

confidence: 99%

Optimization design of fragment-type filtering matching network for continuous inverse class-F power amplifier

Xia

Bian

Kong

et al. 2022

IEICE Electron. Express

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This paper proposes a filtering matching network optimization design method using the fragment-type structure for continuous inverse class-F (CCF −1 ) power amplifier (PA). Different from the conventional microstrip matching structure, the fragment-type structure is used to increase the flexibility of optimization for a sharp roll-off at the second harmonic band. By using a multi-objective evolutionary algorithm, a filtering output matching network (OMN) with the fast transition between the passband and stopband is designed and optimized. For verification, a 1.5-3 GHz broadband CCF −1 PA is designed, simulated and measured. Simulated results show that, compared with conventional Chebyshev filtering OMN design, the operational bandwidth of the proposed design can be expanded by about 15%. Experimental results show that measured efficiency of 65%-77% with a corresponding output power of 40.2-42.2 dBm over a fractional bandwidth of 66.7% can be achieved.

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“…The presented test system complements more complex load‐pull systems with probing used for single‐band characterization with single tone 11 or modulated signals 12,13 . The characterization method complements those typically used by amplifier designers, in which third‐order inter‐modulation distortion and adjacent channel power ratio are measured, 14 and provides metrics that are useful in system performance studies, such as Reference 3.…”

Section: Introductionmentioning

confidence: 99%

Evaluating nonlinear distortion of single and dual channel excitation of an amplifier at 24 GHz

Panigrahi

Rönnow

2021

Micro & Optical Tech Letters

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Experimental characterization of an amplifier's nonlinear properties at 24 GHz is presented in single and dual‐band operation using orthogonal frequency‐division multiplex signals. A test system for characterizing an amplifier's nonlinear properties at millimeter‐wave frequencies for single and dual‐band excitation is presented. The use of standard instrument enables a feasible test system. Analytical expressions based on a statistical analysis of signals and hardware impairments were used to analyze the experimental data versus power level and found to describe well the experimental results, including inter‐ and cross‐modulation distortion. Parameters are derived that could be used in system studies.

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Design of continuous high‐efficiency broadband linear power amplifier using two‐tone signal analysis

Cited by 6 publications

References 9 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

Optimization design of fragment-type filtering matching network for continuous inverse class-F power amplifier

Evaluating nonlinear distortion of single and dual channel excitation of an amplifier at 24 GHz

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