The paper provides an experimental comparison of four types of ultra-wideband coplanar-fed planar monopole antennas.Parameters of the Evaporator with Defrost Element open stub completed by an L-shaped monopole and the cross monopole were adopted from the literature.The forked monopole and the coplanar monopole were fabricated and measured.
Monopoles were compared from the viewpoint of the impedance bandwidth, gain, Booster Seats directivity patterns and dimensions.