| Presentation | 2008-07-25 Microwave Differential Amplifiers Having Frequency-Tunable and Multiple Stopbands Masaki SHIRATA, Kazuyoshi SAKAMOTO, Toshio SHINOHARA, Yasushi ITOH, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | An L-band SiGe HBT differential amplifier with frequency-tunable and multiple stopbands is presented. To achieve frequency-tunable and multiple bandstop performance, multiple varactor-tuned LC-tank circuits are cascaded in a stacked form between emitters of the differential transistor-pair. The stacked multiple LC-tanks have an outstanding feature in that bandstop frequencies can be varied independently. The implemented 0.35μm SiGe HBT amplifier with dual stopbands demonstrates an averaged bandstop performance of 13.3dB over 0.5 to 0.8GHz and 14.3dB across 0.6 to 1.1GHz. The input and output return losses are better than 17.5dB and 11dB over 0.2 to 1.5GHz, respectively. The measured P_<1dB> is +3dBm and IIP_3 is 0dBm with V_ |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Differential Amplifier / Multi-band / SiGe HBT / Microwave / Tank Circuit / Bandstop |
| Paper # | MW2008-73,OPE2008-56 |
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| Conference Information | |
| Committee | OPE |
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| Conference Date | 2008/7/17(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Optoelectronics (OPE) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Microwave Differential Amplifiers Having Frequency-Tunable and Multiple Stopbands |
| Sub Title (in English) | |
| Keyword(1) | Differential Amplifier |
| Keyword(2) | Multi-band |
| Keyword(3) | SiGe HBT |
| Keyword(4) | Microwave |
| Keyword(5) | Tank Circuit |
| Keyword(6) | Bandstop |
| 1st Author's Name | Masaki SHIRATA |
| 1st Author's Affiliation | Department of Electrical and Electronic Engineering, Shonan Institute of Technology() |
| 2nd Author's Name | Kazuyoshi SAKAMOTO |
| 2nd Author's Affiliation | Department of Electrical and Electronic Engineering, Shonan Institute of Technology |
| 3rd Author's Name | Toshio SHINOHARA |
| 3rd Author's Affiliation | Department of Electrical and Electronic Engineering, Shonan Institute of Technology |
| 4th Author's Name | Yasushi ITOH |
| 4th Author's Affiliation | Department of Electrical and Electronic Engineering, Shonan Institute of Technology |
| Date | 2008-07-25 |
| Paper # | MW2008-73,OPE2008-56 |
| Volume (vol) | vol.108 |
| Number (no) | 155 |
| Page | pp.pp.- |
| #Pages | 4 |
| Date of Issue | |