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

Abstract

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

Structure-Based Evolutionary Programming Design of Broadband Wire Antennas

“…Antenna design has been a matter of intuition and brute-force computation from the beginning (see e.g., [1,2]). In the past literature, this task has been faced at different levels, from simple formulas [3] to sophisticated synthesis techniques [4][5][6][7][8][9][10][11], heuristic models [12,13], or one of the different random optimization procedures proposed so far [14][15][16][17][18].…”

Design of Shaped Beam Planar Arrays of Waveguide Longitudinal Slots

“…At the input node of the th radiating waveguide (Figure 4), the inclined coupling slot feeding the waveguide is modeled (being resonant) as an ideal transformer, with a current transformation ratio equal to [30,[32][33][34]. The input impedance seen at the input of this series-series transformer is therefore…”

A Review on Improved Design Techniques for High Performance Planar Waveguide Slot Arrays

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