Author： Shireen R. Shi S. Prather D. W.
Publisher： Taylor & Francis Ltd
ISSN： 1569-3937
Source： Journal of Electromagnetic Waves and Applications, Vol.23, Iss.5-6, 2009-04, pp. : 737-746
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Abstract
In this paper, a wideband bow-tie slot antenna that couples to an extended hemispherical lens to realize high directivity, is proposed. The design consists of a conventional bow-tie with a tuning stub, which yields input impedance of 50 Ω over broad operating bandwidth. The antenna is designed for 60–110 GHz by using 3-D finite-difference time-domain (FDTD) method and 55% bandwidth is achieved for 10 dB return loss. The gain from the integrated lens antenna is 13.5 dB with half power beamwidth (HPBW) of ±12°. The measured return loss and radiation pattern agree very well with the theoretical predictions.
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