Eighty nine-watt cascaded multistage power amplifier using gallium nitride-on-silicon high electron mobility transistor for L-band radar applications. - Khizar Hayat; Salahuddin Zafar; Tariq Mehmood; Busra Cankaya Akoglu; Ekmel Özbay; Ahsan Kashif (IET Circuits Devices Syst., 2021)