Abstract A wideband planar antenna. which is composed of a ground plate and a strip surrounding the plate. is proposed. Wideband impedance matching with fractional bandwidth over 130% is achieved by making the distance between the strip and the ground plate stepwise so that the distance becomes wider in the tip side. https://ofidmkb678epd.blog2freedom.com/34909518/increasing-levels-of-zeolite-and-yucca-schidigera-in-diets-for-adult-cats