Session
Session 3: Advanced Technologies I
Abstract
Our team has been developing an X-band SAR (Synthetic Aperture Radar) system on 75cm*75cm*75cm (paddles folding), 130kg class small satellite including folding flat antenna paddles under ImPACT program [1,2]. SAR observation has advantages under cloudy or bad weather conditions and directly obtaining three-dimensional data, however, requires a high power microwave transmitter. Therefore, we are developing a 1000W solid-state power amplifier (SSPA) that can be mounted on a small satellite by utilizing latest technologies such as GaN HEMT, power combiner, low impedance capacitor and the like. We tested and measured the performances of our manufactured amplifier EM (engineering model). The weight of our amplifier EM was approximately 12.8 kg (including structural panel 4.4kg). It was confirmed that its output capability exceeded 1000 W and continuous operation for more than 5 minutes, which is equivalent to 2000 km observation, was possible.
Test and Development of Prototype 1000W X-band Microwave Solid-State Power Amplifier for Small SAR Satellite
Our team has been developing an X-band SAR (Synthetic Aperture Radar) system on 75cm*75cm*75cm (paddles folding), 130kg class small satellite including folding flat antenna paddles under ImPACT program [1,2]. SAR observation has advantages under cloudy or bad weather conditions and directly obtaining three-dimensional data, however, requires a high power microwave transmitter. Therefore, we are developing a 1000W solid-state power amplifier (SSPA) that can be mounted on a small satellite by utilizing latest technologies such as GaN HEMT, power combiner, low impedance capacitor and the like. We tested and measured the performances of our manufactured amplifier EM (engineering model). The weight of our amplifier EM was approximately 12.8 kg (including structural panel 4.4kg). It was confirmed that its output capability exceeded 1000 W and continuous operation for more than 5 minutes, which is equivalent to 2000 km observation, was possible.
