ABSTRACT
The design of a stripline fed network producing a conical beam circular polarized microstrip patch array antenna is presented in this article. A circularly-polarized conical-beam microstrip patch antenna, with a coplanar conductor pattern, is realized as an array of a number of stripline-fed slotted patches whose diagonal corners are cut off and whose feed lines meet at a central point with a square slot cut at the centre of the patch. There is good agreement between the simulated and experimental results for the return loss and axial ratio. The antenna is intended for short-range low power WSN applications, such as Bluetooth, WiFi etc.
