Tu, Zhao HongZhao HongTuYU-HSIANG CHENG2023-11-162023-11-162023-01-019789463968096https://scholars.lib.ntu.edu.tw/handle/123456789/637199This paper presents a resonant cavity antenna based on a patch antenna and a frequency selective surface operating at 300 GHz. A microstrip patch antenna on a quartz substrate is fabricated using the integrated passive device technology. To further enhance the antenna gain, a metamaterial layer is introduced on the backside of the substrate as a frequency selective surface and a resonator is thus formed. Gain enhancement due to the resonator is about 6 dB.[SDGs]SDG7conference paper10.23919/URSIGASS57860.2023.102653162-s2.0-85175147035https://api.elsevier.com/content/abstract/scopus_id/85175147035