Design of a compact dual exponentially tapered slot antenna

A compact and planar dual exponentially tapered slot antenna fed by micro-strip is presented in this paper. The antenna is printed on a RO4350b substrate and occupies a size of 49×38m2. In order to validate the design, a prototype is fabricated and measured. The measured results confirm that the proposed antenna achieves a good performance of a reflection coefficient below −10dB from 6GHz to 9GHz, including a maximum antenna gain of 9dBi. The measured radiation patterns on E-plane and H-plane agree well with the simulated results. The antenna is fully applicable in ultra-wideband impulse radar system.