Two-Dimensional Mesfet-Based Spatial Power Combiners

A new spatial power combining structure capable of integrating many three terminal devices into two dimension is described. The combiners designed and fabricated using this structure do not suffer from multimoding problems. Effective isotropic radiated powers of 5.54 W and 17.38 W at 10.03 GHz were obtained from an eight and a sixteen MESFET combiner, respectively. These combiners are suitable for monolithic circuit implementation. © 1993 IEE