Design of directivity of tapered slot antenna for triple-band cellular base stations

In this report, a tapered slot antenna (TSA) for triple-band cellular base stations is proposed. Two pairs of slits are introduced to the TSA to realize desired half-power beamwidth and front to back (F/B) ratio. It is shown that the proposed TSA radiates a sector beam with high F/B ratio over 20 dB at the three frequency bands.