en 2-Electronic Devices Electronic Devices Research Paper Research Paper <div style="text-align: justify;"><span style="font-family:Times New Roman;"><span style="font-size:14px;"><span style="color:#000000;">Power amplifier is one of the main components in the RF transmitters. It must provide various stringent features that can lead to complicating the design. In this paper, a new optimizing method based on the inclined planes system optimization algorithm is presented for the design of a discrete power amplifier. It is evaluated in a 2.4-3 GHz power amplifier, which is designed based on &ldquo;Cree&rsquo;s CGH40010F GaN HEMT&rdquo;. The optimization goals are input and output return losses, Power Added Efficiency, and Gain. Large signal simulation of the optimized power amplifier shows a good performance across the bandwidth. In this frequency range, the input and output return losses are about lower than -10&nbsp;dB, the Power Added Efficiency is greater than 51%, while the Gain is higher than 13.5&nbsp;dB. A two-tone test with a frequency space of 1 MHz is applied for the linearity evaluation of the designed power amplifier. The obtained result shows that the power amplifier has good linearity with a low memory effect.</span></span></span></div> Gain, Inclined Planes System Optimization, Optimization, Power Added Efficiency, Power Amplifier. 85 94 http://ijeee.iust.ac.ir/browse.php?a_code=A-10-2850-5&slc_lang=en&sid=1 M. Soruri mohamad.soruri@birjand.ac.ir 1800319475328460013435 1800319475328460013435 No Faculty of Electrical and Computer Engineering, University of Birjand, Birjand, Iran. S. M. Razavi smrazavi@birjand.ac.ir 1800319475328460013436 1800319475328460013436 Yes Faculty of Electrical and Computer Engineering, University of Birjand, Birjand, Iran. M. Forouzanfar forouzanfar@birjand.ac.ir 1800319475328460013437 1800319475328460013437 No Faculty of Electrical and Computer Engineering, University of Birjand, Birjand, Iran.