| Project/Area Number |
07455146
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
電子デバイス・機器工学
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| Research Institution | Tohoku University |
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Principal Investigator |
BAE Jongsuck Research Institute of Electrical Communication Tohoku University Associate Professor, 電気通信研究所, 助教授 (20165525)
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| Co-Investigator(Kenkyū-buntansha) |
MIZUNO Koji Research Institute of Electrical Communication Tohoku University Professor, 電気通信研究所, 教授 (30005326)
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| Project Period (FY) |
1995 – 1996
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| Project Status |
Completed (Fiscal Year 1996)
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| Budget Amount *help |
¥6,800,000 (Direct Cost: ¥6,800,000)
Fiscal Year 1996: ¥2,400,000 (Direct Cost: ¥2,400,000)
Fiscal Year 1995: ¥4,400,000 (Direct Cost: ¥4,400,000)
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| Keywords | Millimeter wave / Solid-State oscillator / Coherent power combining / Quasi-optical resonator / Metal grooved mirror / ミリ帯固体発振器 / ファブリ・ペロ-共振器 / 金属格子鏡型共振器 |
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| Research Abstract |
This research project has been planed to develop a spatial power-combining oscillator using integrated solid-state devices as a practical millimeter-wave radiation source. The oscillator combines coherent radiation powers from a large number of solid-state source devices such as Gunn diodes, resonant tunneling diodes (RTD's), and HEMT's in a quasi-optical resonator, and consequently produces an intense radiation power. In this project, two types of quasi-optical resonators have been developed. One of them is a metal grooved mirror type Fabry-Perot (GFP) resonator for the used of a large number of HEMT's and the other is a horn antenna coupled Fabry-Perotresonator for the use of s amaller number of Gunn diodes. The theoretical and experimental results accomplished through the project are the following :
1. Development of the equivalent circuits for designing the quasi-optical oscillators.
2. Development of a photo-lithographic technique mounting a number of HEMT's grater than hundreds on
… More
the surface of the metal grooved mirror in the GFP-resonator.
3. Observation of oscillation in the GFP-oscillator with nine HEMT's in 10GHz band. The experiments results have shown that the equivalent circuit of the GFP-oscillator is valid.
4. Observation of oscillation in the GFP-oscillator with two GaAs-RTD's in 70 GHz band. The RTD's used here have been developed as a source device for short millimeter wavelengths.
5. Development of 60 GHz band 430 mW Gunn diode oscillator using the hom-antenna coupled resonator with nine diodes.
6. Development of new type of variable output couplers used in the quasi-optical oscillators.
(1) The metal mesh evanescent coupler which makes use of evanescent wave coupling between the metal mesh and the silicon plate, has a wideband transmission property with a largely variable coupling coefficient (more than 80%).
(2) The optically controlled output soupler which consists of a silicon plate with a metal strip grating and a silicon plate, can modulate millimeter waves with optical excitation of the silicon plate. Less
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