A Broadband Printed Conical Bowtie Dipole Antenna with an Integrated Balun

A novel design for a broadband printed dipole antenna element is presented. The broad bandwidth is achieved by introducing a conical bowtie dipole geometry and optimization of the feeding network, which is implemented as a microstrip integrated balun. The proposed printed dipole antenna achieves an impedance bandwidth of 820 MHz with good radiation characteristics. The antenna is designed for 2.45 GHz and finds application in a variety of wireless energy harvesting and power transfer systems and has potential for dual-polarized operation.