| Presentation | 2010-01-14 Deviation from Proportional Relationship Between Emitter Charging Time and Inverse Current of Heterojunction Bipolar Transistors Operating at High Current Density Masayuki YAMADA, Takafumi UESAWA, Yasuyuki MIYAMOTO, Kazuhito FURUYA, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We investigated the relationship between the emitter charging time and inverse current of heterojunction bipolar transistors(HBTs)operating at high current density. This relationship appears to be proportional when the current density is low enough, but it deviates from this proportional relationship at a current density of more than a few mega-ampere per square centimeter. This deviation causes an error in the separation of the total delay time into components when assuming the relationship 1/f_T=A/I+B, where f_T is the cutoff frequency, I is the current, and A and B are constants. This error is more than 30 fs, which is not negligible for ultra-high-speed HBTs. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Heterojunction Bipolar Transistor(HBT) / Emitter Charging Time / Dynamic Emitter Resistance / Emitter Junction Capacitance / Fermi-Dirac Distribution / High Current Density Operation |
| Paper # | ED2009-182,MW2009-165 |
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| Conference Information | |
| Committee | ED |
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| Conference Date | 2010/1/6(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Electron Devices (ED) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Deviation from Proportional Relationship Between Emitter Charging Time and Inverse Current of Heterojunction Bipolar Transistors Operating at High Current Density |
| Sub Title (in English) | |
| Keyword(1) | Heterojunction Bipolar Transistor(HBT) |
| Keyword(2) | Emitter Charging Time |
| Keyword(3) | Dynamic Emitter Resistance |
| Keyword(4) | Emitter Junction Capacitance |
| Keyword(5) | Fermi-Dirac Distribution |
| Keyword(6) | High Current Density Operation |
| 1st Author's Name | Masayuki YAMADA |
| 1st Author's Affiliation | Graduate School of Science and Engineering, Tokyo Institute of Technology() |
| 2nd Author's Name | Takafumi UESAWA |
| 2nd Author's Affiliation | Graduate School of Science and Engineering, Tokyo Institute of Technology |
| 3rd Author's Name | Yasuyuki MIYAMOTO |
| 3rd Author's Affiliation | Graduate School of Science and Engineering, Tokyo Institute of Technology |
| 4th Author's Name | Kazuhito FURUYA |
| 4th Author's Affiliation | Graduate School of Science and Engineering, Tokyo Institute of Technology |
| Date | 2010-01-14 |
| Paper # | ED2009-182,MW2009-165 |
| Volume (vol) | vol.109 |
| Number (no) | 360 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |