Advanced Utilization of Microwave Resonant Fields and Its Applications to Push-Push Oscillators and Reconfigurable Antennas(<Special Section>Emerging Microwave Techniques)
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概要
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This paper presents an advanced and extensive utilization approach of microwave resonant fields, and the applications to push-push oscillators and reconfigurable planar antennas. The excellent coherency, synchronous harmonics and the degenerative orthogonal modes of electromagnetic field built up on microwave resonators are noticeable features in this approach. Another crucial point is the resonant field controllability that is especially essential feature for reconfigurable antennas in this paper. All the features can be realized by embedding semiconductor devices and/or IC's on a microwave resonator. Push-push oscillators and reconfigurable planar antennas are described as good examples of this approach. The push-push oscillators can generate very higher frequency signals due to the selective use of the 4th harmonic up to the 8th harmonic resonant fields, suppressing undesired harmonic signals. As a result, very high frequency band oscillators up to millimeter-wave bands with good suppression of undesired harmonic signals can be easily realized at very low cost by use of commercially available active devices for low frequency bands. The reconfigurable planar antennas are also demonstrated, where the boundary condition of the resonant field on planar antennas can be purposefully controlled to realize reconfigurable antenna performances by the semiconductor devices embedded on the patch as well. The orthogonal linear polarization controllable patch, the dual-band switching patch and the continuously frequency controllable patch have been demonstrated as the successful applications of this approach.
- 2006-12-01
著者
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Nishiyama Eisuke
Electrical And Electronic Engineering Faculty Of Science And Engineering Saga University
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Tanaka Takayuki
Department Of Engineering Systems And Technology Graduate School Of Science And Engineering Saga Uni
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AIKAWA Masayoshi
Department of Engineering Systems and Technology, Graduate School of Science and Engineering, Saga U
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NISHIYAMA Eisuke
Department of Electric and Electronic Engineering, Faculty of Science and Engineering, Saga Universi
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Aikawa Masayoshi
Department Of Electric And Electronic Engineering Faculty Of Science And Engineering Saga University
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Tanaka Takayuki
Department Of Chemistry Graduate School Of Science Kyoto University
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Tanaka Takayuki
Department Of Electric And Electronic Engineering Faculty Of Science And Engineering Saga University
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Tanaka Takayuki
Department Of Applied Physics Fukuoka University
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Tanaka Takayuki
Department of Applied Chemistry, Faculty of Engineering, The University of Tokyo,
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AIKAWA Masayoshi
Department of Electric & Electronic Engineering, Saga University
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