Spidron fractal tapered slot antenna for dual-band radar applications

S.W. Jeong, K.C. Hwang, J.-Y. Park, S.-J. Kim and D.-H. Kim

Journal of Electromagnetic Waves and Applications, 2013, vol. 27, issue 11, 1329-1337

Abstract: A dual-broadband Spidron fractal tapered slot antenna is proposed for radar applications in the S and X bands. Dual-Spidron fractal patches are symmetrically arranged adjacent to each other, and a slot is etched from the central section of the patch to form a feeding slot. A microstrip-to-slotline transition is used to excite the tapered aperture of the Spidron fractal patch. The proposed antenna is fabricated and tested, and has compact dimensions of 35.8 mm × 24 mm (0.358 λ0 × 0.24 λ0). The measured −10 dB reflection bandwidths for the lower and upper frequency bands are 39.42% (2.75–4.10 GHz) and 34.74% (7.85–11.15 GHz), respectively. The measurements also indicate that the proposed antenna exhibits two types of radiation patterns, namely, a near omni-directional pattern in the lower band and a directional pattern in the upper band. The measured peak gains range from 0.4 to 2.97 dBi in the lower band and from 1.42 to 5.52 dBi in the upper band.

Date: 2013
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DOI: 10.1080/09205071.2013.808597

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