• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to project page

2006 Fiscal Year Final Research Report Summary

Research on the development of dielectric-loaded super-high-efficiency small planar antennas by injection compression molding approach

Research Project

Project/Area Number 17560355
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Communication/Network engineering
Research InstitutionAkita National College of Technology

Principal Investigator

MIYATA Katsumasa  Akita National College of Technology, Electrical Engineering Department, Professor, 教授 (10042318)

Co-Investigator(Kenkyū-buntansha) YAMAZAKI Hiroyuki  Akita National College of Technology, Associate Professor, 助教授 (90270206)
KAMATA Satoru  Akita Prefectural Research & Developmemt Center, Management & Planning Department, General Manager, 経営企画部長 (10390923)
Project Period (FY) 2005 – 2006
Keywordsimpedance matching / small planar antennas / dielectric-loaded antenna
Research Abstract

By using injection compression molding approach, dielectric spheres were fabricated. These dielectric materials were then loaded on the surface of a prototype microwave planar antenna for the purpose of enhancing the antenna gain. The prototype antenna tested this time is an X-band waveguide antenna.
To realize a high-gain antenna, we must recognize that an impedance matching plays an important role. In this study, we first tried a matching of a waveguide with single slot, and next a single slot with a dielectric sphere.
Then this structure was extended to a multi-slot waveguide arrays.
Two types of waveguide antennas were considered. One is a snake-waveguide-fed antenna, where a feed waveguide is bent right and left at the antenna walls in a square planar antenna. The feature of this type of antenna is that the antenna can be constructed as one-layer low-profile antenna, radiating radio waves while propagating in the waveguide. In this antenna, however, the matching procedure becomes complex.
The other type of antenna is a parallel-waveguide-fed antenna.In this type of antenna, the matching procedure can be done independently for the feed branch and for the radiating structures, enabling relatively easy matching procedures.
Radiation pattern measurements of the prototype snake-waveguide-fed antenna were conducted at f=12 GHz in the "compact range." It has been found that the front gain of the antenna is improved by loading dielectric materials on the radiating slot surfaces, though some far-angle side-lobe levels were increased.
Further studies are left for maximizing the aperture efficiency by determining the proper parameters of the dielectric materials.

  • Research Products

    (8 results)

All 2006

All Journal Article (8 results)

  • [Journal Article] 12GHz帯コンパクトレンジアンテナの近傍界特性評価2006

    • Author(s)
      宮田克正
    • Journal Title

      秋田高専研究紀要 第41号

      Pages: 28-31

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] 1.8mφオフセットアンテナ(二次元モデル)の近傍界計算について2006

    • Author(s)
      伊藤桂一
    • Journal Title

      平成18年度電気関係学会東北支部連合大会講演論文集、1B11

      Pages: 54

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] コンパクトレンジ用オフセットアンテナの近傍界特性2006

    • Author(s)
      伊藤桂一
    • Journal Title

      平成18年度電気関係学会東北支部連合大会講演論文集、1B12

      Pages: 55

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] 誘電体装荷導波管スロットアレーアンテナの整合2006

    • Author(s)
      伊藤桂一
    • Journal Title

      平成18年度電気関係学会東北支部連合大会講演論文集、2B5

      Pages: 61

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Evaluation of Near-Field Characteristics of a 12GHz-Band Compact-Range antenna2006

    • Author(s)
      Katsumasa Miyata
    • Journal Title

      Research Reports of Akita National College of Technology vol.41

      Pages: 28-31

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Near-Field Computation of 1.8mψ Offset Antenna(two-dimensional model)2006

    • Author(s)
      Keiichi Itoh
    • Journal Title

      Tohoku-Section Joint Convention Record of Institutes of Electrical and Information Engineers, JAPAN

      Pages: 54

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Near-Field Properties of a Compact-Range Antenna2006

    • Author(s)
      Keiichi Itoh
    • Journal Title

      Tohoku-Section Joint Convention Record of Institutes of Electrical and Information Engineers, JAPAN

      Pages: 55

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Matching of a Dielectric-Loaded Waveguide Array Antenna2006

    • Author(s)
      Keiichi Itoh
    • Journal Title

      Tohoku-Section Joint Convention Record of Institutes of Electrical and Information Engineers, JAPAN

      Pages: 61

    • Description
      「研究成果報告書概要(欧文)」より

URL: 

Published: 2008-05-27  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi