COMPACT BROADBAND DUAL-FREQUENCY SLOT-LOADED RECTANGULAR MICROSTRIP ANTENNA WITH GROUND PLANE MEANDERING SLOTS AND STACKING

摘要

In this article, compact broadband dual-frequency slot-loaded rectangular microstrip antenna with meandering slots in the ground plane and their stacking is presented. Here, first a single-layer slot-loaded rectangular microstrip antenna with three identical narrow meandering slots in the ground plane (SLRMSA-MSGP) has been studied. By meandering slot-loaded rectangular microstrip antenna with meandering slots in the ground plane, dual frequency compact broadband operation has been achieved. The antenna resonates for dual frequency with a size reduction of 50 and 30% having an enhanced bandwidth of 12 and 4.5%, respectively. Again to further enhance the bandwidth, a meandered rectangular patch (using three slits) is stacked on the single-layer optimized SLRMSA-MSGP with meandering slits of the top patch in opposite-phase with the ground plane meandering slots. Here, the lower frequency of the antenna has been further slightly lowered with a significant enhancement in the bandwidth. Using this configuration, the antenna resonates for compact dual frequency with a size reduction of 54 and 32.3% having an enhanced bandwidth of 16.8% and 3% respectively.