Wideband Dipole/Monopole Antenna

Abstract

1:3 bandwidth dipole antenna is proposed, where in fact the antenna is a monopole with a modified ground. The frequency range of the antenna is 1 to 3 GHz, matched to VSWR = 2. The directivity of the antenna is between 2 to 3 dBi and the average total efficiency is -0.3 dB. The squint is not greater than one degree. The combined structure of dipole and monopole eliminates the need of using any BALUN structure.