Ultra Low Profile Inverted L Antenna Composed of CPW Printed on PET Sheet for IoT Application

Abstract

The ultra low profile inverted L antenna on a rectangular conducting plane is located above the lower conducting plane and numerically analyzed for the application of IoT. The coplanar waveguide is inserted within the antenna element. The antenna element is printed on the polyethylene terephthalate sheet. The shift of the resonant frequency of this antenna is small due to the existence of lower conducting plane. The influence of the existence of the lower conducting plane can be neglecting when the distance between the ULPIL antenna and the lower conducting plane is longer than 6 mm. Therefore the ULPIL antenna may be promising for the IoT antenna.