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http://dx.doi.org/10.6109/jkiice.2017.21.9.1642

Ultra-wideband Antipodal Vivaldi Antenna with H-shaped Parasitic Patches  

Jung, Dongkeun (Department of Smart Electronics, Gumi Campus of Korea Polytechnic)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.21, no.9, 2017 , pp. 1642-1648 More about this Journal
Abstract
Ultra-wideband antennas are desired for several applications including satellite communications, radars, remote sensing system, telescopes, and microwave imaging systems. There are many types of wideband antenna structures, but the tapered slot Vivaldi antenna is advantageous in terms of cost, weight, scan angle capabilities, end-fire radiation, and ease of feeding and system integration. In this paper, a modified antipodal Vivaldi antenna is presented. A novel AVA with H-shaped parasitic patches has the capacity to improve the radiation characteristics in the whole operation frequencies. A prototype of the modified antenna with RT/duroid 5880 substrate of a relative dielectric constant (${\epsilon}_r$) of 2.2, and a thickness of 31mil is fabricated and experimentally studied as well. It measures a ${\mid}S_{11}{\mid}$ of less than -10dB and gain of 9-12dBi over 7.8-52.5GHz which shows reasonable agreement with the simulated one.
Keywords
Antipodal Vivaldi antenna(AVA); Planar antenna; Tapered slot antenna(TSA); Ultra-wideband(UWB) antenna;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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