| Presentation | 2021-12-16 Series-Series Feedback D-band CMOS Amplifier using a Radial Stub for Source Grounding Taiki Machii, Mizuki Motoyoshi, Suguru Kameda, Noriharu Suematsu, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Positive feedback is effective to improve the gain since sufficient gain cannot be achieved with over-100 GHz CMOS amplifiers. In conventional positive feedback, cross-coupling with differential configuration is widely used. However, the differential configuration has some problems such as doubling the power consumption and chip area. In this paper, we studied the application of series-series feedback (SSF) to D-band CMOS amplifiers. First, the principle of gain boost by SSF is formally clarified and its design conditions are presented. Next, a new gain boost topology inserting a radial stub and a short stub in the source of FET is proposed. It is applicable SSF to D-band CMOS amplifiers. A 130 GHz SSF amplifier was fabricated in a 65 nm bulk CMOS process. The measured gain was 1.6 dB higher than a conventional amplifier. It shows the proposed method is effective for gain boost. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | CMOS / Amplifier / Positive feedback / Radial stub / Millimeter-wave / gain boost / D-band |
| Paper # | MW2021-93 |
| Date of Issue | 2021-12-09 (MW) |
| Conference Information | |
| Committee | MW |
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| Conference Date | 2021/12/16(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Kawasaki City Industrial Promotion Hall |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Microwave/Presentation and Award Ceremony of SDC |
| Chair | Noriharu Suematsu(Tohoku Univ.) |
| Vice Chair | Tadashi Kawai(Univ. of Hyogo) / Kensuke Okubo(Okayama Prefectural Univ.) / Hideyuki Nakamizo(Mitsubishi Electric) |
| Secretary | Tadashi Kawai(Saitama Univ.) / Kensuke Okubo(Toshiba) / Hideyuki Nakamizo |
| Assistant | Naoki Hasegawa(Softbank) / Kosuke Katayama(NIT, Tokuyama College) |
| Paper Information | |
| Registration To | Technical Committee on Microwaves |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Series-Series Feedback D-band CMOS Amplifier using a Radial Stub for Source Grounding |
| Sub Title (in English) | |
| Keyword(1) | CMOS |
| Keyword(2) | Amplifier |
| Keyword(3) | Positive feedback |
| Keyword(4) | Radial stub |
| Keyword(5) | Millimeter-wave |
| Keyword(6) | gain boost |
| Keyword(7) | D-band |
| 1st Author's Name | Taiki Machii |
| 1st Author's Affiliation | Tohoku University(Tohoku Univ.) |
| 2nd Author's Name | Mizuki Motoyoshi |
| 2nd Author's Affiliation | Shizuoka Institute of Science and Technology(SIST) |
| 3rd Author's Name | Suguru Kameda |
| 3rd Author's Affiliation | Hiroshima University(Hiroshima Univ.) |
| 4th Author's Name | Noriharu Suematsu |
| 4th Author's Affiliation | Tohoku University(Tohoku Univ.) |
| Date | 2021-12-16 |
| Paper # | MW2021-93 |
| Volume (vol) | vol.121 |
| Number (no) | MW-303 |
| Page | pp.pp.49-54(MW), |
| #Pages | 6 |
| Date of Issue | 2021-12-09 (MW) |