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Effect of the Feeding T-Junctions in the Performance of Planar Waveguide Slot Arrays

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3 Author(s)
Casula, G. A. ; Dipartimento di Ingegneria Elettrica ed Elettronica, Università degli Studi di Cagliari, Cagliari, Italy ; Mazzarella, G. ; Montisci, G.

An improved analysis procedure for planar waveguide slot arrays has been devised to evaluate the effect of the feeding T-junctions on the radiated far field. The T-junctions have been modelled as five-port networks. A hybrid matrix has been derived for each five-port network by analyzing the interaction between a T-junction and the slot couplers next to it with a method of moments (MoM) procedure. Then, the hybrid matrices have been properly inserted in the array equivalent circuit. The results of our model have been compared to those of a commercial software and with measured data, showing a very good agreement.

Published in:

Antennas and Wireless Propagation Letters, IEEE  (Volume:11 )