Design of a Miniature Ultra Wideband Power Amplifier
AN Shi-qua · Journal of China Academy of Electronics and Information Technology · 2014
Concerning the design goal of a highly efficient power amplifier working across 0. 6 GHz ~2. 2 GHz,the Ga N transistor CGH40045 of CREE Company is selected. The optimal input and output impedance is calculated with the help of Load-Pull technology in software ADS,realizing broadband matching with integrative devices and distributed components. Simulation is performed and produced based on the methodology. The measurement results indicate that within 0. 6 GHz ~ 2. 2 GHz,Drain Efficiency excels 50%,Delivered Power is higher than 45 d Bm and Gain Ripple is less than 1. 2 d B as the drain bias and power drive sets to 28 V and 34 d Bm respectively. These research data well verified the effectiveness of the methodology.