| Presentation | 2012-09-27 A Broadband and Compact LTCC Branch-Line Hybrid Using SeriesGE Capacitances and Short-Circuited Stubs Motomi ABE, Takeshi OHSHIMA, Hideki HATAKEYAMA, Akihiro ITABA, Tetsu OWADA, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | To have broadband branch-line couplers with matching networks even at high frequencies such as X-band, a circuit construction using series capacitances and short-circuited stubs freeing from shunt capacitances is employed. Replacing the λ/4 transformers with lumped elements and being absorbed the caused shunt capacitances into adjacent λ/4 transmission lines segments, it is realized, and the lines become short. The branch-line coupler fabricated in multi-layer LTCC substrates is described. In addition to the design method, the designed and experimental results, indicate good performance: the amplitude imbalance does not exceed 0.5dB, the distributed phase difference error varies within 1.4° , the return loss and isolation are below -20dB over 23% of the bandwidth in X-band, are presented. Also, the size is compact compared with conventional couplers. On the basis of the results, it is verified that the proposed coupler is efficient.. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Branch-line couplers / multi-layer LTCC / lumped element microwave circuits / passive circuits |
| Paper # | MW2012-68 |
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| Conference Information | |
| Committee | MW |
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| Conference Date | 2012/9/20(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 Broadband and Compact LTCC Branch-Line Hybrid Using SeriesGE Capacitances and Short-Circuited Stubs |
| Sub Title (in English) | |
| Keyword(1) | Branch-line couplers |
| Keyword(2) | multi-layer LTCC |
| Keyword(3) | lumped element microwave circuits |
| Keyword(4) | passive circuits |
| 1st Author's Name | Motomi ABE |
| 1st Author's Affiliation | Mitsubishi Electric Corporation() |
| 2nd Author's Name | Takeshi OHSHIMA |
| 2nd Author's Affiliation | Mitsubishi Electric Corporation |
| 3rd Author's Name | Hideki HATAKEYAMA |
| 3rd Author's Affiliation | Mitsubishi Electric Corporation |
| 4th Author's Name | Akihiro ITABA |
| 4th Author's Affiliation | Mitsubishi Electric Corporation |
| 5th Author's Name | Tetsu OWADA |
| 5th Author's Affiliation | Mitsubishi Electric Corporation |
| Date | 2012-09-27 |
| Paper # | MW2012-68 |
| Volume (vol) | vol.112 |
| Number (no) | 217 |
| Page | pp.pp.- |
| #Pages | 5 |
| Date of Issue | |