A beam-switching array is designed using a 4×6 Rotman lens as beam-forming network to switch the beam towards -30°, -10°, 10°, and 30°. Six substrate integrated waveguide fed 1×4 microstrip patch arrays are used radiating elements. The on LTCC operate at 71-76 GHz. In this work, feasibility of implementing with vector modulator (VM) circuit switching element studied for first time. measured rad...

High-band allocations in the millimeter-wave (mm-Wave) frequency spectrum offer high-capacity wireless information transmission as required by fifth generation (5G) communication standards. Among different beamforming structures, Rotman lens (RL) is an attractive passive-microwave-lens-based network due to its low fabrication cost, reliability, design simplicity and wide-angle scanning capabili...

Por Silvio Rotman

In the part of radiolocation focused on one target tracking we can find for example active radar and passive surveillance systems but we cannot find any representative of passive radiolocation area. Therefore this paper is focused on the conceptual design and practical solution of passive radar for one target tracking. The scanning of the area of interest is ensured by an antenna system with a ...