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Beam Steering of Leaky Wave Radiation from Nonreciprocal Phase-Shift Composite Right/Left Handed Transmission Lines
IEICE TRANSACTIONS on Electronics Vol.E93-C No.7 pp.1089-1097
Publication Date: 2010/07/01
Online ISSN: 1745-1353
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Section on Recent Progress in Microwave and Millimeter-Wave Technologies)
leaky wave radiation,
radiation beam steering,
nonreciprocal wave propagation,
Full Text: PDF(637.7KB)
Beam steering of leaky wave radiation from a nonreciprocal composite right/left handed transmission line with a ferrite substrate is proposed. The nonreciprocal phase constants of the line were tuned by changing the applied DC magnetic field normal to the ferrite substrate. In the numerical simulation and the experiment, the nonreciprocal phase characteristics and leaky wave radiation are investigated for the ferrite substrate with the magnetization not only in the saturated region, but also in the unsaturated region. The numerical simulation results are in good agreement with the measurement. It is confirmed that the beam directions of the obliquely unidirectional leaky wave radiation for two different power directions are continuously tunable.