Abstract
In this paper, a modified class-F power-amplifier (PA) for GSM applications is designed, simulated and tested. In this design, novel symmetrical meandered lines compact microstrip resonant cell (SMLCMRC), is proposed as a new harmonics control circuit (HCC), which resulted in size compression, power added efficiency (PAE) enhancement, power gain improvement, and better linearization in the PA. In this work both of the conventional class-F amplifier and proposed amplifier with SMLCMRC is designed at 1.8 GHz. The measurements show that the proposed PA with SMLCMRC has 72.54% maximum PAE, 17.13 dB gain and the 1 dB compression point (P1dB) is about 35.1 dBm. These results show, 16.5% improvement in PAE, 1.33 dB increment in gain and 1.1 dB improvement in linearity operating range of proposed amplifier compared to the conventional PA.
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