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In this paper, a wideband Doherty power amplifier along with a novel design strategy for peaking output matching network is presented. The proposed matching network is designed by maintaining a predetermined electrical length to eliminate the using of peaking offset line for expanding the bandwidth effectively and improving the back-off efficiency. For higher than 50% efficiency at 6 dB back-off power,...
This article presents a highly efficient Doherty power amplifier (DPA) with 4.4% relative signal bandwidth for long‐term evolution (LTE) application at frequency band of 450–470 MHz.To maintain high efficiency at large back‐off power (BOP), the DPA is unsymmetrical and the carrier and peaking amplifiers are implemented to show unequal saturation power. Experimental results using continuous wave signal...
In this paper, a high efficiency GaN Doherty power amplifier (PA) with broad signal bandwidth for LTE-Advanced applications is presented. The carrier and peak amplifier of the Doherty PA, which operate at different classes, have different matching circuits in order to optimize the performance of each amplifier. To validate the performance of the proposed Doherty PA in wideband system, it was tested...
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