AUTHOR=Liao Zhen , Luo Guo Qing , Wu Xin Yu , Cai Ben Geng , Cao Pan Bai , Pan Yu Jian TITLE=A Horizontally Polarized Omnidirectional Antenna Based on Spoof Surface Plasmons JOURNAL=Frontiers in Physics VOLUME=8 YEAR=2020 URL=https://www.frontiersin.org/journals/physics/articles/10.3389/fphy.2020.00053 DOI=10.3389/fphy.2020.00053 ISSN=2296-424X ABSTRACT=

As an analog of the role of surface plasmons in optical antenna, spoof surface plasmons enable far-field radiation of antenna at microwave frequencies. Here, a plasmonic metamaterial supporting spoof surface plasmons is experimentally demonstrated for horizontally polarized omnidirectional radiation in the microwave region. A simple and intuitive working principle in the spoof surface plasmonic metamaterial design is provided, along with full-wave simulations that agree well with the experimental results. The low profile and compact design with the omnidirectional radiation pattern promises a wide range of applications, such as ceiling antennas, surface-mounted indoor antennas, and automobile antennas in microwave and radio frequencies.