Title :
Spatial-Filtering Microwave Devices Using Metallic Anisotropic Grids Over Ground
Author :
Siddiqui, Omar F. ; Eleftheriades, George V.
Author_Institution :
Dept. of Electr. & Comput. Eng., Toronto Univ., Ont.
Abstract :
In this review article the authors examine interesting resonance phenomena that result due to peculiar dispersion characteristics of continuous (unloaded) anisotropic grids along with corresponding applications. The phase space (k-space) of these metallic grids at resonant frequencies is characterized by isofrequency dispersion contours that have rectangular and hyperbolic shapes. As a result, energy propagation takes place in specified directions within the periodic structures, an effect called ´self-collimation´. Novel spatial-filtering and wave-guiding devices could be implemented using these properties. Two such spatial-filtering devices using different configurations of anisotropic metallic grids will be reviewed: a microstrip harmonic splitter that separates 3 GHz from its 6 GHz harmonic and a highly selective 5.8/6.2 GHz microstrip diplexer
Keywords :
microstrip components; microwave circuits; multiplexing equipment; power dividers; spatial filters; 3 GHz; 5.8 GHz; 6 GHz; 6.2 GHz; isofrequency dispersion contours; metallic anisotropic grids; microstrip diplexer; microstrip harmonic splitter; spatial filtering devices; Anisotropic magnetoresistance; Filter bank; Filtering; Frequency; Metamaterials; Microwave devices; Periodic structures; Personal communication networks; Resonance; Shape;
Conference_Titel :
Microwave Conference, 2006. 36th European
Conference_Location :
Manchester
Print_ISBN :
2-9600551-6-0
DOI :
10.1109/EUMC.2006.281074
