@INPROCEEDINGS {35030,
author={L.  Rodrigues and T. Varum and J. N. Matos},
doi={},
booktitle={International Microwave and Optoelectronics Conf. - IMOC},
title={Concept of a Tri-band Frequency Reconfigurable Microstrip Patch Antenna},
year={2019},
month={November},
volume={},
pages={-} 
}