Title :
Effect of loss on directivity enhancement of line source radiation by left-handed material
Author :
Zhu, Jiang ; Xu, Jie ; Wu, Rui-xin
Author_Institution :
Dept. of Electron. Sci. & Eng., Nanjing Univ., Nanjing
Abstract :
We have investigated radiation of a line source within a hollow cylinder made of left-handed materials (LHMs). We find that the LHMs cylinder functions directivity enhancement of source radiation. However, electromagnetic loss can degrade the enhancement effects. By comparing the effects of electric and magnetic losses, we find that magnetic loss is a main issue and should be minimized in order to get better directivity enhancement effect.
Keywords :
antenna radiation patterns; losses; metamaterials; LHM; directivity enhancement; electric loss; electromagnetic loss; hollow cylinder; left-handed material; line source radiation; magnetic losses; Antenna radiation patterns; Directive antennas; Electromagnetic radiation; Electromagnetic scattering; Engine cylinders; Magnetic fields; Magnetic losses; Maxwell equations; Metamaterials; Permeability;
Conference_Titel :
Microwave and Millimeter Wave Technology, 2008. ICMMT 2008. International Conference on
Conference_Location :
Nanjing
Print_ISBN :
978-1-4244-1879-4
Electronic_ISBN :
978-1-4244-1880-0
DOI :
10.1109/ICMMT.2008.4540305
