The major potential application for L-band power amplifiers is in wireless communications. As the capabilities of wireless devices expand, there is an increasing need for compact, efficient power amplifiers. The proposed structures are an excellent technology platform for meeting this market demand for improved power amplifier performance at high efficiency levels and lower DC power consumption Radar remote sensing is a critical application of NASA's exploratory mission. Synthetic aperture radar can provide measurements to water cycle, global ecosystems, ocean circulation, and ice mass. L-band radar is particularly attractive for these applications. High efficiency, lightweight, and high reliability are key attributes for space-qualified components.