Nec Space Technologies, Ltd.

Tokyo Institute of Technology

Japan Aerospace Exploration Agency

Nec Toshiba Space Systems, Ltd.

Osamu Amano

Makoto Ando

Shuichi Koreeda

Yukio Kamata

Provided is a circuit structural body is formed into a shape including: A circuit structural body, including: a multilayer board, which includes a plurality of layers of a first to N-th tri-plate structural bodies each including a first to N-th (N is an integer of 2 or more) planar conductors; an interlayers connection conductor, which is configured to connect the first to N-th planar conductors to each other; and a side-surface ground conductor, which is formed on a side surface of the multilayer board, and is approximately parallel to and near the interlayers connection conductor.

Circuit body structure, where planar conductors on different layers of a multilayer board are connected by an interlayers connection

A radial line slot array antenna has a slotted conductor plate in which a plurality of slots are formed and arranged in a spiral. The plurality of slots are arranged in the slotted conductor plate such that the arrangement distance in a radial direction between the slots varies gradually between a first portion determined based on a first frequency and a second portion determined based on a second frequency that is different from the first frequency.

Radial line slot array antenna

It is possible to obtain a wide-band feeder circuit a lower conductive plate provided substantially in parallel to an upper conductive plate, a short-circuit portion provided in a concave manner at a central portion of the lower conductive plate, and a countersunk portion provided in a convex manner at a central portion of a short-circuit plate forming a bottom of the short-circuit portion. It is also possible to obtain an antenna including such a wide-band feeder circuit.

Growing community of inventors

Tokyo, Japan

Osamu Amano