| Presentation | 2009-07-31 Path Switching Step-Gain-Control Amplifier with a Negative-Feedback Circuit Satoshi MIHO, Kazutomi MORI, Eri TERANISHI, Akira INOUE, Yoshihito HIRANO, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | A path switching step-gain-control amplifier with negative-feedback circuit has been presented for mobile hand sets. In addition to a large range of step-gain-control, both small size and low distortion characteristics can be realized by using the negative-feedback resistance. A good return loss in low-gain-mode is achieved by using the switched parallel resistance equivalent to the input impedance of the transistor. The relations between the range of step-gain-control and the input return loss of the amplifier were analyzed with several values of the negative-feedback and parallel resistances. A 3-stages amplifier employing the proposed step-gain-control circuit at the first stage has been developed. The developed step-gain-control amplifier MMIC is realized in the small chip area of 0.1mm^2. At 2.4GHz, 29.3dB gain-control and over 8dB input return loss were demonstrated. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Amplifier / Step-Gain-Control / Return Loss / MMIC |
| Paper # | MW2009-69,OPE2009-69 |
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| Conference Information | |
| Committee | MW |
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| Conference Date | 2009/7/23(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
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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) | Path Switching Step-Gain-Control Amplifier with a Negative-Feedback Circuit |
| Sub Title (in English) | |
| Keyword(1) | Amplifier |
| Keyword(2) | Step-Gain-Control |
| Keyword(3) | Return Loss |
| Keyword(4) | MMIC |
| 1st Author's Name | Satoshi MIHO |
| 1st Author's Affiliation | Mitsubishi Electric Corporation, Information Technology R & D Center() |
| 2nd Author's Name | Kazutomi MORI |
| 2nd Author's Affiliation | Mitsubishi Electric Corporation, Information Technology R & D Center |
| 3rd Author's Name | Eri TERANISHI |
| 3rd Author's Affiliation | Mitsubishi Electric Corporation, Information Technology R & D Center |
| 4th Author's Name | Akira INOUE |
| 4th Author's Affiliation | Mitsubishi Electric Corporation, Information Technology R & D Center |
| 5th Author's Name | Yoshihito HIRANO |
| 5th Author's Affiliation | Mitsubishi Electric Corporation, Information Technology R & D Center |
| Date | 2009-07-31 |
| Paper # | MW2009-69,OPE2009-69 |
| Volume (vol) | vol.109 |
| Number (no) | 158 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |