| Presentation | 1998/5/14 Measurement of Radiation Efficiency of Pager's Small Loop Antenna Makoto SASAKI, Qiang CHEN, Seizo NAKAMURA, Kunio SAWAYA, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Poor radiation efficiency is sufficient disadvantage of the loop antennas used in the pagers. It has been pointed out that decrease of radiation efficiency is mainly caused by the copper losses of the antenna from the study of the relation between the conductivity of copper and radiation efficiecy. Further investigations, however, clearly shown, that radiation efficiency of the antenna strongly depends on the losses of the capacitor being a part of impedance matching circuit of the jpager. In our opinion, study on the relation between the Q-factor of the capacitor and radiation efficiency of the antenna is point of great interest. In the present report measurements of radiation efficiency of the small loop antenna of the pager are carried out by means of the pattern integration method, and results on the relation between the Q-factor of the capacitor and radiation efficiency of the antenna are presented. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | loop antenna / radiation efficiency / copper loss / pattern integration method / measurement method |
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| Conference Information | |
| Committee | AP |
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| Conference Date | 1998/5/14(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| 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) | Measurement of Radiation Efficiency of Pager's Small Loop Antenna |
| Sub Title (in English) | |
| Keyword(1) | loop antenna |
| Keyword(2) | radiation efficiency |
| Keyword(3) | copper loss |
| Keyword(4) | pattern integration method |
| Keyword(5) | measurement method |
| 1st Author's Name | Makoto SASAKI |
| 1st Author's Affiliation | Faculty of Engineering, Tohoku University() |
| 2nd Author's Name | Qiang CHEN |
| 2nd Author's Affiliation | Faculty of Engineering, Tohoku University |
| 3rd Author's Name | Seizo NAKAMURA |
| 3rd Author's Affiliation | Faculty of Engineering, Tohoku University |
| 4th Author's Name | Kunio SAWAYA |
| 4th Author's Affiliation | Faculty of Engineering, Tohoku University |
| Date | 1998/5/14 |
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| Volume (vol) | vol.98 |
| Number (no) | 46 |
| Page | pp.pp.- |
| #Pages | 5 |
| Date of Issue | |