| Presentation | 2014-11-20 A Directivity Enhancement for Directional Couplers Using Additional Coupled Lines with Reverse-Phase Forward Coupling Hideharu YOSHIOKA, Akimichi HIROTA, Kazuya YAMAMOTO, Hidenori ISHIBASHI, Yukihiro TAHARA, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In a coupled-line directional coupler formed on thin multi-layered substrates, it is difficult to match coupled-line characteristic impedance (Z_C) with load impedance (Z_L). This impedance mismatching causes a forward coupling in the directional coupler, which results in degradation of the directivity. In this study, we have proposed a new method for improving the directivity of the coupled-line directional couplers with the impedance mismatching. The method utilizes a reverse-phase forward coupling by an additional coupled line to cancel the undesired forward coupling. It has been experimentally verified that the proposed directional coupler has directivity enhancement of 13 dB at 0.84 GHz compared with the conventional directional coupler. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Directional coupler / Directivity / Forward coupling / Multi-layered substrate |
| Paper # | MW2014-126 |
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| Conference Information | |
| Committee | MW |
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| Conference Date | 2014/11/13(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
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| Vice Chair | |
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| Paper Information | |
| Registration To | Microwaves (MW) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Directivity Enhancement for Directional Couplers Using Additional Coupled Lines with Reverse-Phase Forward Coupling |
| Sub Title (in English) | |
| Keyword(1) | Directional coupler |
| Keyword(2) | Directivity |
| Keyword(3) | Forward coupling |
| Keyword(4) | Multi-layered substrate |
| 1st Author's Name | Hideharu YOSHIOKA |
| 1st Author's Affiliation | Mitsubishi Electric Corporation() |
| 2nd Author's Name | Akimichi HIROTA |
| 2nd Author's Affiliation | Mitsubishi Electric Corporation |
| 3rd Author's Name | Kazuya YAMAMOTO |
| 3rd Author's Affiliation | Mitsubishi Electric Corporation |
| 4th Author's Name | Hidenori ISHIBASHI |
| 4th Author's Affiliation | Mitsubishi Electric Corporation |
| 5th Author's Name | Yukihiro TAHARA |
| 5th Author's Affiliation | Mitsubishi Electric Corporation |
| Date | 2014-11-20 |
| Paper # | MW2014-126 |
| Volume (vol) | vol.114 |
| Number (no) | 318 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |