Design of continuous inverse Class-F power amplifier based on impedance buffering concept
In order to meet the need of wide band and high efficiency of power amplifier in mobile communication system,a design method of high efficiency continuous inverse class F power ampli-fier is introduced,and a verification circuit is designed based on CGH40010F high power tube of CREE company.Based on the analysis of the fundamental wave and harmonic impedance of the con-tinuous inverse class F mode,a new harmonic control network based on the concept of impedance buffering is proposed,and a 1.2 GHz～2.3 GHz continuous inverse class F power amplifier is de-signed and implemented.The ADS layout co-simulation results show that the drain efficiency ranges from 58.9%to 74.4%,the output power ranges from 39.3 to 41.3dBm,the gain is greater than 10.3 dB,and the gain flatness is less than±1 dB in the operating band of 1.2GHz-2.3GHz.The de-sign method in this paper can provide some reference for the designer of power amplifier.
Power amplifierContinuous inverse-F classImpedance buffering conceptBroadbandHigh efficiency
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