| Budget Amount *help |
¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2013: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2012: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2011: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
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| Research Abstract |
This work is devoted to an application of "nonreciprocal metamaterials" to antenna technologies. Nonreciprocal metamaterials are artificial electromagnetic structures that can realize a situation where the refractive index simultaneously takes positive and negative values, selection of which depends on a direction of electromagnetic wave propagation in the microwave region. By applying the structures to the transmission-line resonators, new functional resonators can be realized. They have unique and fascinating characteristics in that the resonator's size can be changed with the operational frequency fixed, and that the field profile along the resonators shows the uniform amplitude and linearly-varying phase distribution. Tunable phase gradient controlled by the nonreciprocity is implemented into compact and high efficient beam scanning leaky wave antennas. We experimentally demonstrate the beam scanning and investigated the other antenna characteristics.
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