Improving the Bandwidth of U-slot Microstrip Antenna Using a New Technique (Trough-Slot Patch)

Microstrip antennas caught the attention of many designers in the last decade due to its numerous advantages; on the other hand narrow bandwidth is a major disadvantage of microstrip antenna in practical applications. There are still lots of research done to increase the bandwidth of these antennas. In this paper the effect of increasing the finite ground plane on a probe fed U-slot microstrip antenna was proposed. Latter a new technique (Trough slot patch) was used to increase the bandwidth of the U-slot patch. The new technique gave good results since in most of the cases there were at least 3% increase.