Title :
Impedance-Matched Microwave Lens
Author :
Alitalo, Pekka ; Luukkonen, Olli ; Vehmas, Joni ; Tretyakov, Sergei A.
Author_Institution :
Dept. of Radio Sci. & Eng./ SMARAD Center of Excellence, TKK Helsinki Univ. of Technol., Helsinki
fDate :
6/30/1905 12:00:00 AM
Abstract :
A microwave lens with highly reduced reflectance, as compared to conventional dielectric lenses, is proposed. The lens is based on two-dimensional or three-dimensional transmission-line networks that can be designed to have an effective refractive index larger than one, while having almost perfect impedance matching with free space. The design principles are presented and an example lens is studied using commercial simulation software.
Keywords :
impedance matching; lenses; microwave devices; refractive index; transmission line theory; dielectric lenses; impedance-matched microwave lens; perfect impedance matching; refractive index; three-dimensional transmission-line networks; two-dimensional transmission-line networks; Lens; reflection; refraction; transmission line;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2008.920906
