Harmonic-Injection Class-EM/F3 Power Amplifier with Finite DC-Feed Inductance

Mugisho, Moise Safari; Buchanan, Neil; Thian, Mury; Grebennikov, Andrei

doi:10.1109/inmmic46721.2020.9160271

Cited by 3 publications

(4 citation statements)

References 7 publications

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“…Nevertheless, it will be shown later that the load network proposed in this article exhibits a short circuit termination at not only 3 f 0 but also 5 f 0 . Thus, the peak voltage factor of the PA herein proposed is expected to be lower than 3.2, as reported in [22], wherein only the 3 f 0 harmonic component is tuned out.…”

Section: A Main Circuit Analysismentioning

confidence: 69%

“…where V R is given in (25). The optimum load-network parameters ωL 1 and ωC 1 are derived using ( 13), (22), and ( 25) as…”

Section: A Main Circuit Analysismentioning

confidence: 99%

“…1) introducing the new Class-E M /F n PA with reduced peak switch voltage factor compared to the Class-E M PA in [10]- [16]; 2) providing insights into design tradeoffs between different circuit parameters; 3) expanding the design space of the Class-E M /F 3 PA in [22] by providing a continuum of operating modes through parameter k, hence offering more degrees of freedom in the design; 4) presenting a transmission-line (TL) load network that fulfills the operational conditions of the Class-E M /F 3,5 PA while absorbing the output capacitance C out of the active device at the fundamental frequency.…”

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confidence: 99%

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Harmonic-Injection Class-E_M/F_n Power Amplifier With Finite DC-Feed Inductance and Isolation Circuit

Mugisho

Thian

Piacibello

et al. 2021

IEEE Trans. Microwave Theory Techn.

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This article presents the analysis and design of a Class-E M /F n power amplifier (PA). The high peak switch voltage factor of the classical Class-E M PA is reduced by 27.3% through the adoption of the Class-F −1 third-harmonic termination on the main circuit, resulting in a novel topology called the Class-E M /F n . The adoption of a finite dc-feed inductance enables the introduction of the design parameter k, which can be exploited to extend the maximum operating frequency of the PA. The idealized voltage and current waveforms of the PA show that the main circuit fulfills not only zero voltage switching (ZVS) and zero voltage derivative switching (ZVDS) conditions as in the Class-E but also zero-current switching (ZCS) and zero-current derivative switching (ZCDS) conditions as in the Class-E −1 , thus minimizing power dissipation during OFF-to-ON and ON-to-OFF transitions. The load-network parameters of the main and auxiliary circuits are derived, and harmonic-balance simulations are performed to confirm the analytical results. A Class-E M /F 3,5 PA employing a transmission-line load network was designed and implemented using GaN HEMTs. The constructed Class-E M /F 3,5 PA delivered a drain efficiency of 83%, a power-added efficiency of 76%, and an output power of 42.3 dBm at 1.8 GHz. Index Terms-Class-E, Class-E −1 , Class-E M , Class-E M /F n , harmonic injection, harmonic tuning, high-efficiency, power amplifier (PA), soft switching, zero-current derivative switching (ZCDS), zero-current switching (ZCS), zero voltage derivative switching (ZVDS), zero voltage switching (ZVS).

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Section: A Main Circuit Analysismentioning

confidence: 69%

“…where V R is given in (25). The optimum load-network parameters ωL 1 and ωC 1 are derived using ( 13), (22), and ( 25) as…”

Section: A Main Circuit Analysismentioning

confidence: 99%

mentioning

confidence: 99%

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Harmonic-Injection Class-E_M/F_n Power Amplifier With Finite DC-Feed Inductance and Isolation Circuit

Mugisho

Thian

Piacibello

et al. 2021

IEEE Trans. Microwave Theory Techn.

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“…The inverse class-F amplifier has an open load at even-order harmonics (voltage peaking) and a short load at odd-order harmonics (current peaking), which can deliver higher efficiency than the Class-F operation mode. To combine the excellent switching characteristics (ZVS/ZVDS/ZCS/ZCDS) of the Class-E M inverter with the low drain-to-source voltage characteristic of the inverse class-F inverter, a novel Class-E M /F 3 amplifier topology was proposed in [20]. Meanwhile, to reduce the high switching voltage of the main circuit transistor, a new E M /F n type PA by adding an inverse class F third harmonic filter to the main circuit is designed in [21].…”

Section: Introductionmentioning

confidence: 99%

Analysis and Design of the Suboptimum Class-E_M/F₃ Resonant Inverter

Yang,

Li,

Liu

et al. 2023

IEEE Access

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In this paper, the analysis and design method for the suboptimum Class-E M /F 3 inverter (i.e., only the zero-voltage switching (ZVS), the zero-voltage-derivative switching (ZVDS), the zero-current switching (ZCS) conditions are satisfied) with a duty ratio D =0.5 are presented. In the proposed design method, a new design parameter K called the slope of switch current (when the switch turns off) is introduced for defining the suboptimum degree and the distance from the optimum condition. By using the design method of the soft switching resonant inverter, the third harmonic filter circuit is innovatively introduced to reduce the current flowing through the parallel capacitor of the main circuit, and greatly reduce the peak switching voltage of the main circuit and auxiliary circuit. And the circuit waveforms and design equations can be derived in detail. Compared with the conventional Class-E M inverter, the proposed inverter can offer the much lower peak switching voltage and higher efficiency. To verify the validity of the proposed method, a Class-E M /F 3 inverter operating at 1MHz is designed using the IRFZ24N transistor. The experimental results show that the output power of the new inverter is 15.138W, the efficiency reaches 96.4%, and the peak switching voltage of the main circuit and auxiliary circuit is reduced by 29.3% and 15.6%, respectively. The PSpice-simulation results and the experimental measurement results of the designed inverter are agreed with the analytical results, which verified the effectiveness of the proposed design method. INDEX TERMSClass-E M /F 3 inverter, suboptimum, low peak switching voltage, high efficiency, ZVS, ZVDS, ZCS.

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Bandwidth and Power Back-Off Performances of a Class-E_M/F₃Power Amplifier

Mugisho

Thian

Piacibello

et al. 2022

2021 51st European Microwave Conference (EuMC)

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Harmonic-Injection Class-EM/F3 Power Amplifier with Finite DC-Feed Inductance

Cited by 3 publications

References 7 publications

Harmonic-Injection Class-E_M/F_n Power Amplifier With Finite DC-Feed Inductance and Isolation Circuit

Harmonic-Injection Class-E_M/F_n Power Amplifier With Finite DC-Feed Inductance and Isolation Circuit

Analysis and Design of the Suboptimum Class-E_M/F₃ Resonant Inverter

Bandwidth and Power Back-Off Performances of a Class-E_M/F₃Power Amplifier

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Harmonic-Injection Class-EM/F3 Power Amplifier with Finite DC-Feed Inductance

Cited by 3 publications

References 7 publications

Harmonic-Injection Class-EM/Fn Power Amplifier With Finite DC-Feed Inductance and Isolation Circuit

Harmonic-Injection Class-EM/Fn Power Amplifier With Finite DC-Feed Inductance and Isolation Circuit

Analysis and Design of the Suboptimum Class-EM/F3 Resonant Inverter

Bandwidth and Power Back-Off Performances of a Class-EM/F3Power Amplifier

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Product

Resources

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Harmonic-Injection Class-E_M/F_n Power Amplifier With Finite DC-Feed Inductance and Isolation Circuit

Harmonic-Injection Class-E_M/F_n Power Amplifier With Finite DC-Feed Inductance and Isolation Circuit

Analysis and Design of the Suboptimum Class-E_M/F₃ Resonant Inverter

Bandwidth and Power Back-Off Performances of a Class-E_M/F₃Power Amplifier