Abstract:
This work presents simulation and experimental results for wide band
U-shaped side slots loaded linearly polarized rectangular microstrip
antenna with broad side radiation characteristics suitable for onboard
applications in S-band. The structure has been evolved in rugged and
compact form to make it suitable for on-board applications. In addition
to U-shaped central slot a pair of parallel narrow slots has been
embedded close to non-radiating edges. The size and shape of these
side slots have been optimized to improve the matching at higher
frequency side. The impedance bandwidth of 34.8% as compared to 2-
5% bandwidth of conventional microstrip antenna has been achieved.
The frequency ratio of the two well matched operating sections is
found to be f2/f1=1.33. The experimental results are in good agreement
with the numerical results.
