This article presents a tri-band shared-aperture full-corporate-feed continuous transverse stub (CTS) antenna based on hollow-waveguide. The multiband operation is enabled by broadband CTS radiator and novel six-port parallel-plate waveguide (PPW) multiplexer. radiation slot fed vertical PPW power divider. multiplexer composed of three diplexers, which defines the frequency bands—Ku, K, Ka. qua...

The field of metamaterials and the formalism of transformation optics have provided a prescription for constructing artificial dielectrics with unique properties such as light trapping and cloaking. Here, we describe a different approach to creating an inhomogeneous artificial medium, based on waveguide techniques, which does not rely on engineered subwavelengthscale components. We demonstrate ...

Since the dawn of modern optics and electromagnetics, optical prism is one most fascinating elements for refracting light. Exploiting its frequency dispersive behavior, a able to refract different frequencies in directions, realizing polychromatic light rainbows. Recently, thanks their engineerable electromagnetic response, metamaterials have been exploited achieving novel refractive scattering...

Recently, “Both-Side Retrodirective System” was proposed, as a beam convergence technique, for microwave high power transmission. To demonstrate the effectiveness of both-side retrodirective system by experiment, authors propose 2-dimensional measurement equipment. Propagation in parallel plate waveguide analogized based on free-space propagation, and theory characteristics were clarified simul...

A single-layer waveguide slot array antenna of low cost and high performance for a millimetre-wave wireless communication system at 38 GHz frequency band is presented. The waveguide slots and diaphragms are located together on the cover plate of the antenna, which makes the antenna cost effective and highly efficient. Measurements show a cross-polarisation level below 26 dB and an efficiency le...