MMIC compatible slotline antenna

EHF phased array antennas use MMIC amplifiers and phase shifters to alleviate size, power, and weight concerns. Incorporating these MMIC devices into an affordable phased array for practical applications is very challenging. As a first step, we have built and tested a MMIC compatible slotline antenna which can be used as a radiating element for a phased array. This paper presents the design of this slotline radiating element, which can be connected directly to the MMIC device, avoiding complex interconnection in the transition region between the radiating element and the MMIC component.