Fujikura Limited

Nhk Integrated Technology Inc.

Kazuhiko Takano

Fumio Suzuki

Nobunao Ishii

Yasuki Ozaki

Yoshihiko Nasu

Junjii Kumada

Kazuhisa Satou

A leaky cable with a central conductor, and an outer conductor having a rectangular cross section surrounding the central conductor. The outer conductor has a first and a second surface parallel to each other, and at least one slot row formed in at least one of the first and second surface. The slot row is formed in a first direction of the outer conductor and includes a plurality of slots each configured to form a leaky electromagnetic field. An insulator is disposed between the central conductor and the outer conductor. The width of the rectangular cross section in a direction parallel to the first and second surfaces is less than half of a wavelength of an electric signal transmitted through the leaky cable.

Leaky cable having at least one slot row for propagating electromagnetic waves that have been diffracted backwards

Provided is a leaky coaxial cable in which a plurality of slotsfor forming a leak electromagnetic field are arranged in a string shape in an outer conductor of the coaxial cable. The pitch interval of the slotsis periodically changed in the axial direction. The periodical change of the pitch interval of a slot portion changes according to a sinusoidal function, a quadratic function, or other functions.

Leaky coaxial cable

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Sakura, Japan

Kazuhiko Takano