Indoor Air Cooled S-Band 2.7-2.9GHz 22kW GaN Based Pulse HPA System Indoor Air Cooled S-Band 2.7-3.1GHz 22kW GaN Based Pulse HPA System Indoor Air Cooled S-Band 3.1-3.5GHz 17kW GaN Based Pulse HPA System WIDEBAND Indoor Air Cooled _._ – _._GHz _ _kW GaN Based Pulse HPA System