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A 24 GHz Dual-Polarized and Robust Dielectric Rod Antenna
Publikationstyp
Journal Article
Publikationsdatum
2017-12
Sprache
English
TORE-URI
Enthalten in
Volume
65
Issue
12
Start Page
6952
End Page
6959
Article Number
8076919
Citation
IEEE Transactions on Antennas and Propagation 12 (65): 8076919 (2017-12)
Publisher DOI
This paper presents a robust and easy manufacturable dual linear-polarized dielectric waveguide antenna (DRA) for the 24 GHz industrial, scientific, and medical band. Dual-polarized operation is achieved by utilizing a square metal waveguide and a conical horn for exciting the surface wave on a tapered dielectric rod. In order to couple a signal into the square waveguide, an innovative dual-polarized, aperture-coupled microstrip-to-waveguide transition is shown. Additionally, two kinds of radomes, i.e., a foam radome and a half-wave wall monolithic radome are presented to protect the DRA. The antenna achieves a 10 dB bandwidth of 1.7 GHz and a gain of 11.5 dB including losses caused by the transitions and connectors. The sidelobe level and the cross-polarization level are lower than -25 and -26 dB, respectively. Designs and measurement results of all components are described in detail in this paper.
Schlagworte
Antenna feeds
dielectric antennas
dielectric waveguides
directional antennas
polarization