Home Publications Research Grants Inventions & Patents Awards Additional Research Activities Faculties & Institutions Research Areas

Planar cross-polarized transition to a circular waveguide feed for a 61 GHz dielectric antenna

Stein W, Deckelmann M, Oborovski A, Vossiek M (2015)

---

Publication Language: English

Publication Status: Published

Publication Type: Conference contribution, Conference Contribution

Publication year: 2015

Publisher: Institute of Electrical and Electronics Engineers Inc.

Pages Range: 162-165

Article Number: 7107778

ISBN: 9783981266863

DOI: 10.1109/GEMIC.2015.7107778

Abstract

This paper presents a novel concept for a planar cross-polarized transition to a 61 GHz dielectric lens antenna. The transition to the circular waveguide antenna feed consists of a combination of a microstrip line and a slot line. Each of these planar waveguides excites the H11 mode in the circular waveguide with a 90± polarization angle to one another. The developed double layer transition topology was realized on a Rogers 5880 substrate employing the microstrip line on the top and the slot line on the bottom layer. The concept was implemented and tested on a circular waveguide-fed dielectric lens antenna for a 61 GHz radar system. Experimental results show a transition loss of around -2 dB for the microstrip and -3 dB for the slot line feed with excellent crosstalk suppression greater than 40 dB for the two polarization channels. The bandwidth of the built crosspolarized transition is greater than 10 GHz. The results prove that the novel transition concept is very well suited for compact, broadband and low cost polarimetric millimeter-wave radar systems.

Authors with CRIS profile

How to cite

APA:

Stein, W., Deckelmann, M., Oborovski, A., & Vossiek, M. (2015). Planar cross-polarized transition to a circular waveguide feed for a 61 GHz dielectric antenna. In Proceedings of the 9th German Microwave Conference, GeMiC 2015 (pp. 162-165). Institute of Electrical and Electronics Engineers Inc..

MLA:

Stein, Wadim, et al. "Planar cross-polarized transition to a circular waveguide feed for a 61 GHz dielectric antenna." Proceedings of the 9th German Microwave Conference, GeMiC 2015 Institute of Electrical and Electronics Engineers Inc., 2015. 162-165.

BibTeX: Download