Design of circularly polarized waveguide crossed slotted array antenna at Ka band

摘要

Present paper highlights an improvement over the use of conventional cross slot radiator in waveguide broadwall for circular polarization by using a combination of cross slot and inclined slot pair. Accordingly, a circularly polarized travelling wave slotted array antenna at Ka band (38.6GHz) of 20dB gain has been designed and verified in a nonstandard waveguide using the modified cross slot radiator.