Corrugated SIW L-folded antipodal parabolic tapered slot antenna

Ali Doghri (1) , Anthony Ghiotto (1) , Tarek Djerafi (1) , Ke Wu (2)

1 Poly-Grames
2 Poly-Grames

In this paper, corrugated SIW L-folded antipodal parabolic Tapered Slot Antenna (TSA) is proposed and demonstrated for the very first time. Compared to other reported SIW TSA, this design achieves foot-print reduction by a factor of nearly two and excellent radiation pattern symmetry. This structure can easily be designed to obtain either 45° or −45° polarization. Moreover, this single element shows advantages over other reported end-fire TSA for arrays, namely, it can achieve a lower spacing between elements to obtain reduced side-lobe level (SLL) and 45° or −45° polarizations as well as reduced coupling between adjacent elements. To feed this antenna, an L-Folded SIW (LFSIW) line is introduced. An L-junction from SIW to LFSIW is also proposed and studied. The gain of single L-folded element is 13 dBi compared to 15.1 dBi for the unfolded antenna. However, the folded antenna provides an 8.5 dB improvement in the coupling level between adjacent elements.

Mots clés: Antenna Array; L-Folded Substrate Integrated Waveguide (LFSIW); Substrate Integrated Waveguide (SIW); Tapered Slot Antenna (TSA)

Domaines: Electromagnétisme

Ali Doghri, Anthony Ghiotto, Tarek Djerafi, Ke Wu. Corrugated SIW L-folded antipodal parabolic tapered slot antenna. IEEE 2012 Asia-Pacific Microwave Conference Proceedings (APMC), Dec 2012, Kaohsiung, Taiwan. pp.893-895, ⟨10.1109/APMC.2012.6421770⟩. ⟨hal-00786559⟩