The majority of up-to-date conceived composite right-handed / left-handed (CRHLH) transmission lines (TL) are open configurations derived from microstrip technology. We present here a closed CRHLH architecture derived from the H10 rectangular hollow waveguide mode, which is realised in substrate-integrated waveguide (SIW) technology and is thus easy to fabricate. The dispersion characteristic i...

A novel resonator using a composite right/left-handed (CRLH) transmission line (TL) is presented and its extraordinary resonant characteristics with an infinite-wavelength wave are discussed. The resonance corresponds to the zeroth-order on the analogy of the conventional mode numbering. The zeroth-order resonant characteristics and loss mechanism are fully described by the circuit theory and i...

This paper presents a novel high-power rotary waveguide phase shifter based on circular polarizers specifically engineered for microwave (HPM) applications. The is capable of performing precise 360° linear shift through rotation and consists three parts: linearly polarized to left-handed circularly (LP-LHCP) mode converter, right-handed (LH-RHCP) (LP-RHCP) converter. analyzes the phase-shifting...

The resolution of the reduced fractional nonlinear Schrödinger equation obtained from model describing wave propagation in left-handed transmission line presented by Djidere et al recently, allowed us this work through Adomian decomposition method (ADM) to highlight behavior and study process dark bright soliton solutions with effect derivative order as well Modulation Instability gain spectrum...

A novel kind of symmetrical backward-wave coupled-line coupler with arbitrary coupling level is proposed in this paper which is based on resonant-type composite right-/left-handed transmission lines (CRLH TLs). First, an equivalent circuit model and procedure for circuit parameters extraction are presented to reveal the inherent nature of the unit cell of the CRLH coupler. Then a CRLH TL compos...

A novel structure of dual-composite right/left-handed transmission line (D-CRLH-TL) is proposed in this paper, and its electromagnetic characteristics are investigated in theory and simulation. The dispersion curve of the proposed structure has been derived by using Bloch-Floquet theory. The structure is composed with an “H”-shaped defected ground structure (DGS) and two stubs with rectangular ...

We report experimental results at 1.057 GHz that demonstrate the ability of a planar left-handed lens, with a relative refractive index of -1, to form images that overcome the diffraction limit. The left-handed lens is a planar slab consisting of a grid of printed metallic strips over a ground plane, loaded with series capacitors (C) and shunt inductors (L). The measured half-power beamwidth of...

The purpose of this study was to survey left-handed (LH) dental students and interns concerning whether they face any problems in their dental education or in their practice of dentistry. The questionnaires were distributed in four dental colleges in different regions in Saudi Arabia. The questionnaire was comprised of sixteen questions to assess the following issues: demographic information, d...

We report the true left-handed transmission of a composite metamaterial (CMM) consisting of periodically stacked split-ring resonator (SRR) and wire elements. The negative permeability (m < 0) gap is demonstrated explicitly by comparing SRR and closed-ring resonator structures. We confirm experimentally that the plasma cut-off frequency of the CMM is determined by the combined dielectric respon...