Multiband Characteristic of a Microwave Triangular Patch Antenna with Harmonic Suppression Capability. - Abd Azis, Ammar D.; Hamzah, Shipun A.; Ramli, Khairun N.; Khawaja, Bilal A.; Alzahrani, Saeed; Dalimin, Mohd Noh; Yahya, Muhammad S. (Progress in Electromagnetics Research C, 2026)