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This paper presents the design and simulations of a Rotman lens for use at 60 GHz frequency band. This lens will be used as a feeding network for a multi-beam antenna. Both the lens and the antenna array will be made in LTCC technology. To avoid the losses produced by the ceramic material used in LTCC, the lens has been designed based in Ridge-Gap Waveguides for the input and output ports. Since wave...
An asymmetric ground Rotman lens is presented in this letter. A new design of a Rotman lens is proposed to accommodate a whole beamforming system by providing separate ground layers for antennas and circuits. The lens has three dielectric layers and four metallic layers. The prototype of the lens consists of seven array ports, five beam ports, and six dummy ports. The measured return losses show that...
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