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Progress In Electromagnetics Research
ISSN: 1070-4698, E-ISSN: 1559-8985
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ULTRA-WIDEBAND DIELECTRIC-LOADED HORN ANTENNA WITH DUAL-LINEAR POLARIZATION CAPABILITY

By J.-Y. Chung

Full Article PDF (1,478 KB)

Abstract:
In order to improve measurement efficiency in electromagnetic test facilities (compact range or near-field range), testing probes are required to have ultra-wideband (UWB) radiation characteristics, dual-polarization capability, and interchangeable E- and H-plane far-field patterns. In this context, we propose a new type of UWB antenna that satisfies these requirements in the frequency range of 4 to 18 GHz. For the proposed antenna, a low-loss dielectric material is loaded over pairs of balanced feeds to overcome radiation performance degradation addressed in purely metallic antennas. Also, radiation patterns are further improved by employing a lens aperture and shielding structures. The measured results of the final antenna design demonstrate broad and stable far-field patterns (half-power beamwidth > 45), low voltage standing-wave ratio (< 2), similar E- and H-plane patterns, and large cross-polarization isolation (> 23 dB).

Citation:
J.-Y. Chung, " ultra - wideband dielectric - loaded horn antenna with dual - linear polarization capability ," Progress In Electromagnetics Research, Vol. 102, 397-411, 2010.
doi:10.2528/PIER10022703
http://www.jpier.org/PIER/pier.php?paper=10022703

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