Title :
Influence of reflected waves at a terminal of nonreciprocal phase-shift CRLH transmission lines on the leaky wave radiation
Author :
Horikawa, Ken ; Ueda, Tetsuya ; Akiyama, Masahiro
Author_Institution :
Dept. of Electron., Kyoto Inst. of Technol., Kyoto, Japan
Abstract :
The influence of reflected waves at a terminal of a nonreciprocal phase-shift composite right/left handed transmission line on the leaky wave radiation is investigated. In the numerical simulation, the radiation characteristics for both a one-way propagation along the nonreciprocal phase-shift composite right/left handed transmission line and a propagation along the same line but with the reflected waves at the terminal are compared. The numerical results validate gain enhancement of the obliquely unidirectional leaky wave radiation by more than 3 dB due to additional radiation from the reflected waves.
Keywords :
electromagnetic wave propagation; electromagnetic wave reflection; leaky wave antennas; numerical analysis; transmission lines; gain enhancement; left handed transmission line; nonreciprocal phase-shift CRLH transmission lines; numerical simulation; obliquely unidirectional leaky wave radiation; one-way propagation; reflected waves; right handed transmission line; Dielectric substrates; Ferrites; Geometry; Magnetic fields; Magnetic materials; Metamaterials; Microstrip; Permeability; Saturation magnetization; Transmission lines; Nonreciprocal wave propagation; leaky waves; microstrip; periodic structures;
Conference_Titel :
Microwave Conference, 2009. APMC 2009. Asia Pacific
Conference_Location :
Singapore
Print_ISBN :
978-1-4244-2801-4
Electronic_ISBN :
978-1-4244-2802-1
DOI :
10.1109/APMC.2009.5385331
