| Presentation | 2003/11/13 A Transmission Diversity Scheme for Avoiding Hand Blocking Yuta TAKAGI, Ryo YAMAGUCHI, Shinji UEBAYASHI, |
|---|---|
| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The critical decline of radiation efficiency for mobile telephones causes by not only human head but also hand blocking. We propose transmission diversity scheme by adopting the circulator which doesn't require additional electric circuit in order to avoid hand blocking. An improvement of radiation efficiency has been realized because reflected power from main antenna is fed to sub antenna through the circulator. In this paper, we have described the theory of this proposal and clarified experimentally improvement effect of radiation efficiency. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Hand Blocking / Transmission Diversity / Radiation Efficiency / Circulator |
| Paper # | A・P2003-161,RCS2003-167 |
| Date of Issue |
| Conference Information | |
| Committee | RCS |
|---|---|
| Conference Date | 2003/11/13(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 | Radio Communication Systems (RCS) |
|---|---|
| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Transmission Diversity Scheme for Avoiding Hand Blocking |
| Sub Title (in English) | |
| Keyword(1) | Hand Blocking |
| Keyword(2) | Transmission Diversity |
| Keyword(3) | Radiation Efficiency |
| Keyword(4) | Circulator |
| 1st Author's Name | Yuta TAKAGI |
| 1st Author's Affiliation | NTT DoCoMo, Inc.() |
| 2nd Author's Name | Ryo YAMAGUCHI |
| 2nd Author's Affiliation | NTT DoCoMo, Inc. |
| 3rd Author's Name | Shinji UEBAYASHI |
| 3rd Author's Affiliation | NTT DoCoMo, Inc. |
| Date | 2003/11/13 |
| Paper # | A・P2003-161,RCS2003-167 |
| Volume (vol) | vol.103 |
| Number (no) | 459 |
| Page | pp.pp.- |
| #Pages | 4 |
| Date of Issue | |