Design of a combined horizontal and U slot patch antenna with reduced cross-polarization and increased sustainabilityBhavya Lakshmi Tulasi Edara, T. Guhambika Naga Aishwarya, Kumari Manisha, S.D. Pandey and A. SaidaE3S Web Conf., 430 (2023) 01015DOI: https://doi.org/10.1051/e3sconf/202343001015