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Dive into the research topics where Tsunayuki Yamamoto is active.

Publication


Featured researches published by Tsunayuki Yamamoto.


asia pacific microwave conference | 2012

Left-handed mode propagating in the structure composed of metal strips put alternately

Takehiro Yoshida; Hiroshi Kubo; Atsushi Sanada; Tsunayuki Yamamoto

A left-handed material with a simple structure is proposed. The metamaterial is composed of metal strips on both sides of periodic dielectric substrates. The metal strips have both an electric property and a magnetic property. By putting the strips alternately on both sides, a double negative region can be obtained. The dispersion relations and the transmission characteristics are confirmed experimentally. Moreover the propagation characteristics of modes in a composite right/left-handed (CRLH) material are shown.


european microwave conference | 2015

Waveguide-type discrete beam-scan antenna with switching diodes

Hiroshi Kubo; Masayuki Takamatsu; Tsunayuki Yamamoto; Atsushi Sanada


IEICE Transactions on Electronics | 2012

Propagation Characteristics on the Left-Handed Mode in the Material Composed of Metal Strips Put Alternately on Front and Back Sides

Hiroshi Kubo; Takenori Yoshida; Atsushi Sanada; Tsunayuki Yamamoto


asia-pacific microwave conference | 2010

2D zeroth order resonator with non-planar metamaterial composed of metal rods

Tsunayuki Yamamoto; Atsushi Sanada; Hiroshi Kubo; Toshiro Kodera


IEICE Transactions on Electronics | 2012

Experimental Verifications of Left-Handed Characteristics of 3-D Left-Handed Metamaterial Composed of Periodic Wired Metallic Spheres

Tsunayuki Yamamoto; Atsushi Sanada; Hiroshi Kubo


european microwave conference | 2011

Measurements of a 3-D negative refractive index slab lens composed of periodic wired metallic spheres

Tsunayuki Yamamoto; Atsushi Sanada; Hiroshi Kubo


asia-pacific microwave conference | 2011

Negative index material composed of cylinders with a metal pattern arranged in the form of a hexagonal lattice

Takatsugu Fukushima; Hiroshi Kubo; Atsushi Sanada; Tsunayuki Yamamoto


Proceedings of the IEICE General Conference | 2015

C-2-35 Radiation characteristics of waveguide-type beam-scan antenna with switching diodes

Masayuki Takamatsu; Hiroshi Kubo; Tsunayuki Yamamoto; Atsushi Sanada


C - Abstracts of IEICE TRANSACTIONS on Electronics (Japanese Edition) | 2015

Propagation Characteristics of Modes in a Waveguide-Type Left-Handed Transmission Line with Metal Cylinders Arranged Alternately

Hiroshi Kubo; Shogo Sadamasu; Atsushi Sanada; Tsunayuki Yamamoto


international symposium on electromagnetic theory | 2013

A novel theoretical approach of fishnet-type material composed of multilayer metallic patterns by the equivalent circuit

Tsunayuki Yamamoto; Hiroshi Kubo; Atsushi Sanada

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