| Presentation | 2009/11/19 Controlling of Impedance Matched Frequency by Loading Varactors and Proposal of Tunable Antenna Electromagnetically Fed by Wideband Antenna Kyoichi IIGUSA, Hiroshi HARADA, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | A technique to enhance the impedance matched frequency of an antenna is studied to apply it for a cognitive wireless communication. There is a limit in enhancing the impedance matched frequency by loading varactors because the reactance value of a varactor increases in high frequency whereas the reactance value with which the input impedance of the antenna is matched ordinary decreases. On the other hand, a variable reactance range of a varactor broadens in low frequency and the impedance matched frequency band broadens in high frequency. Therefore, we propose an antenna whose input impedance is matched by the technique of a wideband antenna in high frequency and by the technique of loading varactors in low frequency, and clarifies its basic characteristic. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Wideband / Varactor / Electromagnetically coupled feed / Tunable / Cognitive |
| Paper # | A・P2009-130 |
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| Conference Information | |
| Committee | AP |
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| Conference Date | 2009/11/19(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | |
| Vice Chair | |
| Secretary | |
| Assistant | |
| Paper Information | |
| Registration To | Antennas and Propagation (A・P) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Controlling of Impedance Matched Frequency by Loading Varactors and Proposal of Tunable Antenna Electromagnetically Fed by Wideband Antenna |
| Sub Title (in English) | |
| Keyword(1) | Wideband |
| Keyword(2) | Varactor |
| Keyword(3) | Electromagnetically coupled feed |
| Keyword(4) | Tunable |
| Keyword(5) | Cognitive |
| 1st Author's Name | Kyoichi IIGUSA |
| 1st Author's Affiliation | National Institute of Information and Communications Technology, New Generation Wireless Communications Research Center() |
| 2nd Author's Name | Hiroshi HARADA |
| 2nd Author's Affiliation | National Institute of Information and Communications Technology, New Generation Wireless Communications Research Center |
| Date | 2009/11/19 |
| Paper # | A・P2009-130 |
| Volume (vol) | vol.109 |
| Number (no) | 304 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |