Title :
Differential dual-band impedance inverter with common mode suppression based on composite right/left handed (CRLH) transmission lines
Author :
Velez, Paris ; Duran-Sindreu, Miguel ; Bonache, Jordi ; Martin, F.
Author_Institution :
GEMMA/CIMITEC Dept. d´Eng. Electron., Univ. Autonoma de Barcelona, Bellaterra, Spain
Abstract :
In this work, a differential dual-band impedance inverter with common mode rejection operating at f1=1.8GHz (GSM band) and f2=2.4GHz (ISM band) is presented. The designed impedance inverter is based on a Π-type differential composite right/left handed (CRLH) transmission line implemented in microstrip technology through semi-lumped resonators; that is, stepped impedance resonators (SIRs) for the shunt branch, and interdigital capacitors series connected to inductive strips for the series branch. The device exhibits its functionality at the design frequencies, with a common mode rejection ratio (CMRR) better than 35dB. The total occupied area of the common mode suppressed differential dual-band impedance inverter is 0.37λ×0.27λ (where λ is the guided wavelength at f1).
Keywords :
electric impedance; micro-optics; microstrip lines; optical design techniques; optical metamaterials; optical resonators; optical waveguides; transmission lines; GSM band; ISM band; common mode rejection ratio; composite left handed transmission lines; composite right handed transmission lines; differential dual-band impedance inverter design; frequency 1.8 GHz; frequency 2.4 GHz; interdigital capacitor series; microstrip technology; mode suppression; semilumped resonators; shunt branch; stepped impedance resonators; Band-pass filters; Dual band; Impedance; Inverters; Optical resonators; Power transmission lines; Resonant frequency;
Conference_Titel :
Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS), 2013 7th International Congress on
Conference_Location :
Talence
Print_ISBN :
978-1-4799-1229-2
DOI :
10.1109/MetaMaterials.2013.6808950
