Nagoya Institute of Technology

Denso Corporation

Toyota Jidosha Kabushiki Kaisha

National University Corporation Nagoya Institute of Technology

Kunio Sakakibara

Yutaka Aoki

Shinji Ichikawa

Tetsuhiro Ishikawa

Kazuoki Matsugatani

Akihisa Fujita

Kento Nakabayashi

Hiroshi Hirayama

Nobuyoshi Kikuma

In a radar assembly, a first dielectric member includes a dielectric outermost structural member of a vehicle. A radar device includes an antenna module, and a substantially tubular or domed radome. The radome includes a transmissive portion, and is disposed to cover the antenna module such that the transmitted radar wave passes through the transmissive portion. The transmissive portion is disposed behind the back surface of the first dielectric member with space thereto. A second dielectric member includes at least the transmissive portion, and is disposed to face the first dielectric member. A frequency-selective substrate passes a radar wave within a frequency band therethrough, and block radar waves outside the frequency band. The frequency-selective substrate is disposed such that its first surface is directly abutted onto the first dielectric member, and its second surface is directly abutted onto the second dielectric member to constitute a sandwich structure.

Radar assembly

A power transmission system has an AC power source and a high-frequency power driver that make up a high-frequency power source, and a primary self-resonant coil and a secondary self-resonant coil. The secondary self-resonant coil is magnetically coupled, by magnetic field resonance, to the primary self-resonant coil, and receives as a result high-frequency power from the primary self-resonant coil. The coils of the primary self-resonant coil and the secondary self-resonant coil resonate in an even mode when high-frequency power is transmitted from the primary self-resonant coil to the secondary self-resonant coil. Specifically, the primary self-resonant coil and the secondary self-resonant coil resonate in a state where currents in mutually opposite directions flow in the two coils.

Power transmission system and power supply device for vehicles

The microstrip array antenna includes a dielectric substrate formed with a conductive ground plate at a back surface thereof, and strip conductors formed on a front surface of the dielectric substrate. The strip conductors includes a linear main feeding strip line, and a plurality of array elements connected to the main feeding strip line, the array elements being disposed at least one of both sides of the main feeding strip line at a predetermined interval along a longitudinal direction of the main feeding strip line. Each of the array elements includes a sub-feeding strip line connected to the main feeding strip line, a rectangular radiating antenna element connected to a terminal end of the sub-feeding strip line, and a stub connected to the sub-feeding strip line. The stub is disposed between the main feeding strip line and the radiating antenna element.

Microstrip array antenna

A transmission line transition for coupling electromagnetic energy between different transmission lines includes first and second dielectric substrates laminated to each other and a waveguide tube attached to the first dielectric substrate. The laminated dielectric substrate provides a dielectric waveguide having a first end short-circuited and a second end communicating with a hollow interior of the waveguide tube. An antenna connected to a planar line is disposed in the dielectric waveguide and spaced from the short-circuited end of the dielectric waveguide by a predetermined distance in a longitudinal direction of the waveguide tube to excite and to be excited by the waveguide tube. The dielectric waveguide has a cross-sectional area smaller than that of the interior of the waveguide tube and coincides with the interior of the waveguide tube in the longitudinal direction.

Transmission line transition

A high frequency module for converting a high frequency wave in a free space to a high frequency wave in a planar waveguide includes two metal plates, a dielectric substrate and a planar waveguide disposed on the dielectric substrate. The dielectric substrate between the two metal plates has the planar waveguide disposed thereon, and the planar waveguide protrudes either in a through hole bored in one of the two metal plates, or in a hollow space defined by the other of the two metal plates on the dielectric substrate.

Growing community of inventors

Nagoya, Japan

Kunio Sakakibara