Effect of various meandering slots in rectangular microstrip antenna ground plane for compact broadband operation

The study of the effect of various meandering slots in the rectangular microstrip antenna ground plane for compact broadband operation is presented. The rectangular microstrip antenna is meandered using three different types of ground plane meandering slots: (a) smaller meandering slots, (b) longer meandering slots, and (c) open-end meandering slots, and is studied experimentally and compared. In these meandering slots, the open-end meandering slot is proved to be effective in significantly enhancing the bandwidth of a compact meandered antenna. Using open-end meandering slots in the ground plane, an extreme compactness of 83% with a broad bandwidth of 38.3% is obtained.