A novel monopole-alike surface-wave antennas designed based on periodic structures

From applications of high-impedance surfaces, TM surface wave pass-band below TM band-gap was found, and for periodic artificial surfaces without a band-gap, a similar phenomenon can be found below the leaky-wave band, which form the primary discovered special features in the present research work. A novel type of surface-wave antenna based on artificial surface was built, the antenna, which has wide-band impedance bandwidth and compact size, behaves like a monopole antenna in radiation pattern.