Horn Antenna Gain Enhancement using 3-D Printed Dielectric Lens for Dielectric Properties Measurement - Sivakumar, Renukka; Azemi, Saidatul Norlyana; Abdullah Al-Hadi, Azremi; Ahmad, ZahariAwang; You, Kok Yeow; Seng, Lee Yeng; Soh, Ping Jack (2023 IEEE International Symposium On Antennas And Propagation (ISAP), Antennas And Propagation (ISAP), 2023 IEEE International Symposium On, 2023)