ABSTRACT
The improvement in the radiation gain characteristic of a conventional RMPA upon the use of alphabetical slots has been investigated. The RMPA design has been built using a 58mm x 80 mm Flame Retardant-4 Epoxy substrate that is 1.6 mm thick and has a dielectric constant of 4.4. The employed feeding technique is coaxial feed. Simulation has been carried over HFSS-15. An improvement in the radiation characteristic of gain has been observed in each design iteration. The final design stage has been fabricated and experimentally verified. The measured results have been found to be in close approximation with the simulated ones.
