Miniaturized rectangular hard waveguides for use in multifrequency phased arrays

Basic radiation properties of waveguides filled with uniaxial single‐negative metamaterials

“…However, this type of radiator may find application in multiband waveguide arrays [7]. The narrowband nature of the miniaturized waveguide here becomes an advantage, since it causes high isolation between neighboring elements operating in different frequency bands.…”

“…A different type of optical GS, namely spatial GS, has been predicted to arise in a periodic layered medium composed of two dielectrics whose nonlinear response is cubic in the electric field (Kerr effect, or intensity-dependent refractive index) [5,6]. Arrays of closely spaced parallel optical waveguides coupled through evanescent tail overlap constitute a generalization of this structure, and have attracted a lot of attention recently, thanks to their linear and nonlinear properties that mimic the behavior of discrete systems [7][8][9]. Such structures have been built in AlGaAs, as well as in photorefractive materials (where they can be induced optically [10]), or in liquid crystal thin films [11].…”

Split Slots Array for Grating Lobe Suppression in Ridge Gap Guide

“…he ridge gap waveguide (RGW) technology has recently attracted the attention of lots of researchers [1][2][3][4][5][6][7]. This is due to its ability to handle high power applications with minimal losses; when compared to the planar microstrip technology.…”

Waveguide miniaturization with Sr(ZnTi)Fe10O19 hexaferrite metamaterial

“…Basic way of waveguide miniaturization involves using of partial filling dielectric materials in waveguide [1], developed dielectric loaded hard-walled waveguide [2], introduction of artificial materials with simultaneously negative permittivity and permeability, designed as metamaterial or backward-wave material [3], and application of dielectric-filled corrugated waveguide for supporting backward waves [4]. Recently, the ferrite metamaterial fully filled in X-band waveguide was studied for applications [5].…”