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Since the concept of composite right/left handed (CRLH) transmission line has been proposed, many kinds of structures are presented with different novel features. These structures also have been applied to design microwave components, which have many advantages compared to those conventional components. In this paper, phase characteristics of our partially closed composite right/left-handed (CRLH)...
An equivalent circuit model of improved electric resonant structure loaded by lumped components is presented in this paper. The relative resonant characteristics are detailed analyzed and the main factors effected on the bandwidth of transition from zero to pole transmission points are retrieved. An commercial simulation software of Ansoft HFSS is used to validate our theoretical analysis. Then, a...
In this letter, we present an implementation for the previously proposed chiral cascaded circuit (CCC) using lumped capacitors, inductors, and transformers. The design of a 180/0deg four-port coupler with one-unit-cell CCC is then presented. Both simulation and experimental results show that such a coupler with identical load at four ports behaves as an analogue to an isotropic chiral slab residing...
Summary form only given. In this talk, we present a new structure to amplify the evanescent waves. The structure is composed of two layers. The first layer is realized by a periodic structure with unit cell of series inductor and shunt capacitor (LC), and the second layer is realized by a periodic structure with unit cell of series capacitor and shunt inductor (CL). We show that both the LC and CL...
This paper presents a novel compact meta-structure which is characterized by simultaneously negative permittivity (epsiv) and permeability (mu) and easier to be integrated with other components by conventional printed circuit board (PCB) technology. Instead of using straight metal rods, the electric resonance is produced by a spiral microstrip line (SML), and split-ring resonators (SRR) with the end-coupling...
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