Abstract
The theory and the numerical simulation of 2D microwave beamforming networks (BFNs) in the form of a system of coupled waveguides are considered. The analyzed BFNs are designed for quasi-optical multibeam antennas. The theory of coupled modes is used to analyze the BFNs with fixed phase shifters and not identical coupled waveguides whose radiators are placed in the nodes of a rectangular or a hexagonal grid. It is shown that the proposed N-channel networks form N flat-top patterns intersecting at a level close to −3 dB. The input channels of this network are matched and isolated. The theory of coupled modes is used for optimization of such devices.
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Additional information
Original Russian Text © S.E. Bankov, 2009, published in Radiotekhnika i Elektronika, 2009, Vol. 54, No. 10, pp. 1157–1170.
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Bankov, S.E. Two-dimensional beamforming networks on the basis of coupled waveguides. J. Commun. Technol. Electron. 54, 1097–1110 (2009). https://doi.org/10.1134/S1064226909100015
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DOI: https://doi.org/10.1134/S1064226909100015