Ku -Band Solid State Power Amplifier For Siral Altimeter

Abstract

A compact, high efficiency 25W Kuband SSPA has been developed for the Siral Altimeter, cryosat program. SSPAs have been used in radar application for many years. The main advantages of the pulsed SSPAs are the followings: - Low distortion of amplitude and phase during the pulse. - High reproducibility of identical pulses. - High quality of output spectrum: low harmonic contents and reduced group delay time. This SSPA combines the output of four 8W-hybrid PHEMT modules with an integral waveguide combiner. AM/PM conversion was measured at 0.5 degree / dB and the phase shift were measured less than 5 degree.