Quasi-Optical Power Combining Techniques

Abstract

This paper brings about the past and recent trends in the design of solid-state transmitter in the millimeter and submillimeter-wave frequencies using quasi-optical techniques where many devices are efficiently combined to give moderately high power useful for radar applications. In quasi-optics, the cavity dimension can be of many wavelengths, thereby allowing large number of solid-state devices to be integrated without any moding problem usually present in waveguide combiner circuits. Combining efficiency is quite high since combination takes place in the space. Some work carried out at SAMEER is also reported.