A multistage second harmonic control output matching network is proposed in this article.
Through the fundamental and harmonic impedance matching at multiple frequencies in the
target band, the accuracy of the fundamental and harmonic impedance of the continuous
power amplifier is improved. The efficiency is improved consequently. A highly efficient
broadband continuous inverse Class‐F power amplifier based on this structure is designed
and fabricated using a CGH40010F GaN HEMT packaged device. The measurement results …

This paper proposes a design approach for a broadband and high-efficiency continuous
inverse Class-F (CCF-1) power amplifier (PA) based on a modified elliptic low-pass filtering
(LPF) matching network (MN). From theoretical and practical perspectives, the importance of
a swift impedance transition from the higher end of the fundamental frequency band to the
lower end of the second harmonic band is discussed, when designing a broadband single-
mode PA. After being compared with widely used Chebyshev LPF MNs, a modified elliptic …