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A new attractive elementary cell is proposed for 1-bit and 2-bit transmit-arrays in X-Band, where the wideband and low loss characteristics are crucial. The proposed unit cell consists of two identical square patch antennas include C-loop slot and interconnected in their centers by a metalized via hole. The unit cell exhibits a simple three-layer metallic structure and allows standard printed-circuit...
This paper proposes a dual-polarization parallel plate waveguide (PPW) slot antenna array which has the advantages of high efficiency and low-profile. The antenna array is realized in the multilayer structure. The H-plane waveguide arrays in the low layer and the 2×2-element subarray in the upper layer are employed as the feed networks and radiating part, respectively. An 8×8-element array with height...
In this paper the mutual coupling between two opened waveguides is presented with a new approach. Our basic idea consists first to simulate the free space as a rectangular waveguide and we seek the appropriate dimensions that do not affect the scattering parameters. In a second step we use the symmetry principle to reduce the coupling problem to one guide radiating in the free space. For simplification...
We use plasmonic antenna arrays to unidirectionally couple incident light in two different polarization states to long-range surface plasmon polariton waveguide modes propagating in opposite directions. The structures enable polarization-sorting with extinction rates in excess of 30dB.
Waveguide-fed slot arrays are employed in numerous radar, remote sensing, and communication applications in ground and space systems. Professor Elliott's significant contributions paved the way for the eventual maturity of the slot array antenna technology to the point that it is possible to design such systems in one pass without the need for any experimental data. The author worked in a research...
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