Title :
A novel nonreciprocal magnetless left-handed microstrip line
Author :
Tehrani, Kimia Nikooei ; Hojjat-Kashani, Farrokh ; Tayarani, Majid
Author_Institution :
Sch. of Electr. Eng., Iran Univ. of Sci. & Technol., Tehran, Iran
Abstract :
Combining traveling-wave ring resonators and microstrip inductors in a planar microstrip line circuit, negative values of electric permittivity and magnetic permeability can be obtained. This phenomenon arises from negative permeability of the traveling-wave ring resonators and negative permittivity due to the behavior of shorted stubs within the rejected frequency band. Thanks to the nonreciprocal behavior of the traveling-wave ring resonators we can achieve 16 dB isolation between s21 and s12 in the left-handed region. Therefore, a novel approach is presented here to synthesize a nonreciprocal magnetless left-handed media in microstrip technology. Full wave simulation results confirm the left-handed behavior of the interaction. The concept can be extended to active nonreciprocal network.
Keywords :
magnetic permeability; metamaterials; microstrip lines; microwave metamaterials; electric permittivity; magnetic permeability; microstrip inductors; nonreciprocal magnetless left-handed microstrip line; planar microstrip line circuit; traveling-wave ring resonators; Ferrites; Metamaterials; Microstrip resonators; Optical ring resonators; Permeability; Permittivity; Left-handed transmission line; nonreciprocity; traveling-wave ring resonators;
Conference_Titel :
Electrical Engineering (ICEE), 2014 22nd Iranian Conference on
Conference_Location :
Tehran
DOI :
10.1109/IranianCEE.2014.6999817
