Wideband High Gain Compressed Dipole Antenna for Drone Jammer Application

Abstract

This paper presents a wideband high gain conical shaped dipole with reduced side-lobe levels. The dipole antenna is operating at higher order mode and having a compressed version of 3λ/2 length at its center frequency of operation. The dipole is made conical to achieve wide-bandwidth and the length is miniaturized by meandering the central portion of λ/2 length. The side-lobe level is reduced due to the meandered portion. The central meandered part is surrounded by one additional wide metallic ring. The 10-dB impedance bandwidth of 560 MHz (~10%) the antenna is at the deigned center frequency of 5.8 GHz. The side-lobe level shows approximately 10 dB at the center frequency of operation. The realized gain shows 5.21 dBi at the center frequency. The pattern has got elevation plane beam-width of approximately 33o for 360o azimuthal direction which is suitable for the drone jammer application.