Design of broadband inverse class-F power amplifier based on resistive-reactive series of inverse continuous modes

In this paper, a phase shift parameter is introduced to the current waveform of the series of continuous inverse modes (SCIMs) to generate complex fundamental and harmonic admittances. The extended design space based on this novel theory can offer alternative solutions for realizing broadband high-efficiency PAs. To verify the method mentioned above, a 0.9-2.1 GHz PA is designed and fabricated. Experimental results show the PA is able to achieve 63.3%-72.1% drain efficiency and 39.9-41.2 dBm saturated output power in the target band.

Section: Introductionmentioning

confidence: 88%

Section: The Series Of Continuous Inverse Modes With Phase Shiftmentioning

confidence: 95%

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Design of broadband power amplifier based on series of continuous inverse modes with phase shift

Liu

Leng

Qiu

et al. 2019

“…Compact matching network is gradually taken more considerations. The traditional class-E [3,4,5,6,7,8,9,10,11,12], class-F [13,14,15,16,17,18,19,20,21], class-J [22,23,24,25] modes are high efficiency PA. Class-E works a strong drive and its theoretically efficiency can reach 100%, but its parallel capacitor cannot support the higher frequency band [26]. The class-F PA can solve the above issue, but it is designed in a narrow bandwidth with continuous mode less than an octave.…”

Section: Introductionmentioning

confidence: 99%

Ultra-broadband high efficiency class-EFJ power amplifier with a compact coupling matching structure

Jia

Cheng

Shi

et al. 2022

This paper presents a multi-octave class-EFJ power amplifier based on a compact coupling structure. The compact coupling structure derives the output matching network impedance which is a simplified Ttype network. The compact coupling structure reduces the output matching impedance range to meet the impedance requirement of the class-EFJ power amplifier. This coupling structure can meet the design space of the optimal fundamental impedance and control the harmonic matching impedance. Compared with the traditional design method, this design method can meet the requirement of the miniaturization and improve the efficiency in a wide bandwidth. In order to improve the efficiency and broaden the bandwidth, the input matching network is used a stepped impedance and open circuit microwave line matching method. To verify the proposed structure effectiveness, a multi-octave bandwidth and high efficiency PA is designed and fabricated with a GaN HEMT CGH40010F. The measured results show that the output power of 40.2dBm to 42.9dBm and the drain efficiency of 62.8%-72.4% are achieved at 0.9GHz-3.4GHz, respectively.

“…Then, the class-J principle was extended to both the Class-F and inverse Class-F modes in the form of the continuous Class-F [9] and continuous inverse Class-F [10], respectively. To further expand the design space, several hybrid continuous modes and resistive-reactive continuous modes appreared in succession [11,12,13,14,15,16,17,18,19]. However, the design space of continuous modes mentioned above is derived at the current generate (I-gen) plane while the matching network is constructed at the package plane [20].…”

Section: Introductionmentioning

confidence: 99%

Design of broadband power amplifier based on continuous class-F mode with frequency parameterization

Liu

Qiu

et al. 2019

This paper investigates the design space of a broadband continuous Class-F power amplifier (PA) at the device package plane. By parameterizing the empirical parameter by frequency, the extrinsic fundamental and second harmonic impedances can be engineered to rotate clockwise on the Smith chart which can be realized by the realistic matching network. The proposed design methodology is verified with the implementation of 10 W PA which operates across 1.7-3 GHz. The experimental results show that this PA can achieve drain efficiency of 54.7%-74.8% in the whole interesting band.