| Project/Area Number |
14550392
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
情報通信工学
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| Research Institution | Akita National College of Technology |
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Principal Investigator |
MIYATA Katsumasa Akita National College of Technology, Electrical Engineering Department, Professor, 教授 (10042318)
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| Co-Investigator(Kenkyū-buntansha) |
YAMAZAKI Hiroyuki Akita National College of Technology, Associate Professor, 助教授 (90270206)
ITOH Keiichi Akita National College of Technology, Research Associate, 助手 (20290702)
KAMATA Satoru Akita Prefectural Research & Development Center, Management & Planning Department, General Manager, 経営企画部長 (10390923)
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| Project Period (FY) |
2002 – 2004
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| Project Status |
Completed (Fiscal Year 2004)
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| Budget Amount *help |
¥3,000,000 (Direct Cost: ¥3,000,000)
Fiscal Year 2004: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 2003: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 2002: ¥1,500,000 (Direct Cost: ¥1,500,000)
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| Keywords | Snake waveguide / Planar Antenna / Matching / 小型平面アンテナ / 導波路の整合 |
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| Research Abstract |
(1)Dielectric spheres to be loaded on the waveguide array antennas are fabricated by injection compression molding approach. Next, impedance matching of a dielectric-loaded waveguide array antenna was conducted over the frequency range of 11.8 GHz to 12.2 GHz. After matching, the voltage standing wave ratio of a waveguide antenna (ten slots with ten dielectric spheres) was suppressed down to 1.2 from 4.0. It has been found by the experiment conducted at f=12 GHz that the antenna gain and the far-field radiation pattern (particularly in the E-plane) with the dielectric slots were improved.
(2)A compact range environment for X-band small antenna pattern measurements has been constructed by using a 1.8m-diameter offset reflector antenna. The transmitting polarization can be chosen vertical or horizontal, or both enabling circularly-polarized transmission. It has been found that a test antenna with the aperture dimension approximately 30cm are applicable.
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