Wideband power amplifier based on Wilkinson power divider for s-band satellite communications

Mussa Mabrok (Universiti Teknikal Malaysia Melaka (UTeM))
Zahriladha Zakaria (Universiti Teknikal Malaysia Melaka (UTeM))
Tole Sutikno (Universitas Ahmad Dahlan)
Ammar Alhegazi (Universiti Teknikal Malaysia Melaka (UTeM))

Bulletin of Electrical Engineering and Informatics
Vol 8, No 4: December 2019

This paper presents design and simulation of wideband power amplifier based on multi-section Wilkinson power divider. Class-A topology and ATF-511P8 transistor have been used. Advanced Design System (ADS) software used to simulate the designed power amplifier. The simulation results show an input return loss (S11)<-10dB, gain (S21)>10 dB over the entire bandwidth, and an output power around 28dBm at the Centre frequency of 3GHz. The designed amplifier is stable over the entire bandwidth (K>1). Inter-modulation distortion is -65.187dBc which is less than -50dBc. The designed amplifier can be used for the microwave applications which include weather radar, satellite communication, wireless networking, mobile, and TV.