Abstract
This paper presents a design scheme of class-F PA harmonic suppression network. This scheme combines the advantages of lumped parameter elements and distributed parameter elements, and makes use of the characteristics of high Q value (quality factor), large adjustability of capacitance and high reusability of the microstrip line, so that the harmonic suppression network has the advantages of them. Based on the proposed scheme, a class-F PA with a frequency of 2.4GHz and a maximum PAE of 68.86% is designed, the output power of which can reach 17.5W (42.42dBm), so as to verify the feasibility of the proposed scheme. This scheme can improve the output power of UHF (300 ~ 3000MHz) class-F PA and reduce the difficulty of circuit design under the condition of high PAE.
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