WAVEGUIDE TUBE SLOT ANTENNA AND METHOD FOR MANUFACTURING THE SAME

• Main Authors: SONOZAKI TOMOKAZU, HATTORI KEI, AKAI HIROSHI
• Format: Patent
• Language: English; Japanese
• Published: 23.03.2017
• Subjects: ANTENNAS, i.e. RADIO AERIALS; BASIC ELECTRIC ELEMENTS; ELECTRICITY; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE; WAVEGUIDES

PROBLEM TO BE SOLVED: To provide a waveguide tube slot antenna capable of stably exhibiting desired antenna characteristics at low costs.SOLUTION: There is provided a waveguide tube slot antenna 1 which has radiation slots 3 provided on a waveguide tube 10 that has a waveguide 2 extending in a tube axis direction, in a tube axis direction at predetermined intervals, where the waveguide tube 10 is formed of a combination body of first and second waveguide formation members 11, 12, each having a cross-section with ends in each portion in an extension direction of the waveguide 2. The first waveguide formation member 11 is formed of a flat metal member having the radiation slots 3, the second waveguide formation member 12 is formed of a resin member integrally holding the first waveguide formation member 11, and at least a defined surface of the waveguide 2 is covered with a continuous conductive coating film 6 having no cut line.SELECTED DRAWING: Figure 1 【課題】所望のアンテナ特性を安定的に発揮し得る導波管スロットアンテナを低コストに提供可能とする。【解決手段】管軸方向に延びた導波路２を有する導波管１０に、その管軸方向に沿って所定間隔で放射スロット３を設けてなる導波管スロットアンテナ１であって、導波管１０が、導波路２の延在方向各部における横断面が有端状をなした第１および第２の導波管形成部材１１，１２の結合体からなるものにおいて、第１の導波管形成部材１１が、放射スロット３を有する平板状の金属部材で構成される共に、第２の導波管形成部材１２が、第１の導波管形成部材１１を一体的に保持した樹脂部材で構成され、かつ、少なくとも導波路２の画成面が、切れ目のない連続した導電性被膜６で被覆されている。【選択図】図１