Gain Enhanced Linear Rectangular Dielectric Resonator Antenna Array for RADAR Applications

Rapidly increasing fields in application of RADARs place various lateral dimensional constraints on the antenna design that require gain enhancement without tailoring the antenna size. This paper presents design of 1×4 Rectangular Microstrip Patch Antenna Array (RMPAA) both in the presence and absence of Rectangular Dielectric Resonators (RDRs). The radial field analysis of 1X4 RMPAA with two varying lengths of RDRs is detailed. The optimized RDR increases the gain around 2.5 dBi. The designed structure is fabricated and measured in anechoic chamber. The measured results are in good agreement with the simulations performed in Ansys HFSS.