| Title |
Study on the Ka-band Solid-State-Power Amplifier(SSPA) through the 18-way Spatial Combining Method |
| Authors |
박상우(Sangwoo Park) ; 나경일(Kyoungil Na) ; 양승식(Seongsik Yang) ; 박지안(Jian Park) |
| DOI |
https://doi.org/10.5573/ieie.2024.61.7.32 |
| Keywords |
Ka-band; Millimeter-wave; SSPA; MMIC; High power amplifier |
| Abstract |
In this paper, we present the design, fabrication, and the measurement results of the Ka-band SSPA(Solid-State Power Amplifier) that was minimized a combine loss through the waveguide spatial combine to achieve the high efficiency and high output performance. The fabricated SSPA has the 18-channel spatial power divider and combiner structures by using WR-28 standard waveguide form. For the high output power and high efficiency, each channel of power amplifier was applied to GaN(Gallium nitride) MMIC(Monolithic Microwave Integrated Circuit) which has high-speed pulse switching performance at less than 5 ns in maximum power. The performance of proposed SSPA was measured, which shows over than 54 dBm of Tx peak power and over than 52 dBc of spurious properties. |