| Presentation | 2007-11-22 Low reflection print dipole array antenna used in microwave imaging of biological objects in 1-2GHz/2-3GHz ranges Naoyuki IWATA, Michio MIYAKAWA, Nozomu ISHII, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In microwave imaging of biological objects, array antennas are desired for efficient- and swift-data acquisition. We have fabricated several kinds of dipole array antennas for microwave imaging of a human body by Chirp Pulse Microwave Computed Tomography (CP-MCT). Those antennas are consisted of more than 30 small dipole antennas so printed on a dielectric board as to construct a fan beam-type receiving antenna. The problem of such printed antennas is high return loss nature in high loss liquids such as a saline solution. We have tried to reduce the return loss by achieving the impedance matching between the antenna-conductor and surrounding saline solution (high-loss liquid) by covering the conductor with the same dielectric material as the printed dielectric board. The sandwiched dipole antenna works properly as we expected, but mutual coupling effects among adjacent dipole antennas have to be minimized for tomographic imaging. We have solved this problem by covering all the antenna conductors with small- and separate-dielectric substrates. Return loss of the sandwiched dipole antenna was reduced by more than 10dB as compared to conventional printed dipole antennas. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Microwave imaging / Loss Medium / Antenna / Return Loss |
| Paper # | MBE2007-67 |
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| Conference Information | |
| Committee | MBE |
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| Conference Date | 2007/11/15(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | ME and Bio Cybernetics (MBE) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Low reflection print dipole array antenna used in microwave imaging of biological objects in 1-2GHz/2-3GHz ranges |
| Sub Title (in English) | |
| Keyword(1) | Microwave imaging |
| Keyword(2) | Loss Medium |
| Keyword(3) | Antenna |
| Keyword(4) | Return Loss |
| 1st Author's Name | Naoyuki IWATA |
| 1st Author's Affiliation | Graduate School of Science and Tech., Niigata University() |
| 2nd Author's Name | Michio MIYAKAWA |
| 2nd Author's Affiliation | Center for Transdisciplinary, Niigata University:Faculty of Engineering, Niigata University |
| 3rd Author's Name | Nozomu ISHII |
| 3rd Author's Affiliation | Faculty of Engineering, Niigata University |
| Date | 2007-11-22 |
| Paper # | MBE2007-67 |
| Volume (vol) | vol.107 |
| Number (no) | 351 |
| Page | pp.pp.- |
| #Pages | 4 |
| Date of Issue | |