High Efficiency Ka-Band Spatial Combiner

Ka - Band Linearization

The new Ka-band communications services require highly linear, high power amplifiers (HPAs). Traveling wave tube amplifiers (TWTAs) offer the best millimeter wave HPA performance in terms of power and efficiency, but are inferior to solid state power amplifiers (SSPAs) in linearity. This paper discusses techniques for improving millimeter wave HPA linearity. The significance and methods for eva...

The Ka-band Interferometric Synthetic Aperture Radiometer for High Spatial Resolution

The Ka-band interferometric radiometer is developed as a demonstration model of 2-D interferometric radiometer to evaluate sub-Y-type array which was proposed by the research group SSL at K-JIST. This new antenna configuration is proposed for high spatial resolution imaging radiometer and it shows better performance than conventional Y-type array. The implemented radiometer is developed at 37 G...

Ka-Band Triangular Patch Antenna on Micromachined High-k Substrate

This paper reports the design of a Ka-band Equilateral triangular patch antenna (ETPA) fabricated using postCMOS and post-MMIC compatible process technology. The antenna uses an air-cavity underneath the patch radiator that is supported on thin dielectric membrane. The antenna structure was analysed and optimised using the finite element method (FEM) based Agilent High Frequency Structure Simul...

A High Data Rate Ka Band Global Network For Weather

The United States Air Force Weather operates globally to collect observations of atmospheric conditions. Instruments include human observers, weather satellites, and weather radars. A new era is forthcoming in the domain of weather satellites, as satellite sensors are improved and additional weather satellites are launched by China, Japan, and others. The United States is integrating its civili...

High Gain Planar Antenna Structures for Ka-band Applications