Continuous Class-J/F-1 Mode Asymmetrical Doherty Power …

May 31, 2023 · Abstract: This article presents a design method of continuous class-J/ $\text{F}^{-1}$ mode asymmetrical Doherty power amplifier (DPA) using the phase tuning technique. By …

FAQs about Continuous Class-J/F-1 Mode Asymmetrical Doherty Power … Coupon?

Does asymmetrical DPA improve efficiency over a wide power dynamic range?

To mainly address the issue of the efficiency enhancement in the wide power dynamic range, we experimentally demonstrate an asymmetrical DPA with ET of the auxiliary amplifier in this paper, in order to keep a high efficiency over a wider range of output powers compared to classical Doherty designs. The paper is organized as follows. ...

How are Class-F and Class-C modes combined to obtain an asymmetric DPA?

Class-F and Class-C modes are combined to obtain an asymmetric DPA. The precise active load-pull controlling of fundamental and harmonic terminations of the DPA is simulated and analyzed, including the parasitics of the transistors. ...

How asymmetrical DPA can achieve saturation efficiency?

In addition, the proposed DPA can theoretically achieve saturation efficiency of more than 58.7% over the working frequency. Based on the proposed method, a broadband continuous class-J/ F−1 mode asymmetrical DPA operating from 1.3 to 2.5 GHz (63%) is designed and measured. ...

What is asymmetrical LMBA?

An asymmetric LMBA configuration is employed to increase the OBO range. The two PA branches of the balanced PA operate in different class-C modes, thereby obtaining two OBO points. Further, an asymmetrical coupler is also introduced into the asymmetrical LMBA architecture to expand the OBO. ...

Can LMBA expand the power back-off range of pseudo-Doherty load-modulation balanced power amplifier?

This paper proposes a mixed design strategy to expand the power back-off (OBO) range of the pseudo-Doherty load-modulation balanced power amplifier (LMBA). An asymmetric LMBA configuration is employed to increase the OBO range. The two PA branches of the balanced PA operate in different class-C modes, thereby obtaining two OBO points. ...

What are the simulation results of DPA?

The simulation result of DPA: ( a) the waveform and the load-line, ( b) output power and fundamental impedance in the upper 10-dB input power range; ( c) gain and efficiency of the DPA in 20-dB input back-off range. ...