| Presentation | 2022-03-04 A 60 GHz-band S/H CMOS IC for Direct RF Undersampling Reception Tomoyuki Furuichi, Nagahiro Yoshino, 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) | As the increasing demand for high-speed communication, the use of millimeter-wave such as 60 GHz band has been attracting attention for broadband communication. We have been developed Ka-band sample-and-hold (S/H) IC for direct RF undersampling reception. In this paper, we designed the 60 GHz band S/H IC and fabricated it in 65nm CMOS process. For increasing the operating frequency to 60 GHz, the clock signal characteristics (e.g. jitter) effect is more remarkable than Nyquist sampling. Since the fall time that transitions from sampling to hold state decreases the hold output voltage, it should be also considered not only jitter. We determined the target of the fall time by the simulation and designed a clock forming circuit to meet the target. In order to achieve 2 GHz bandwidth, the parasitic capacitance between the gate and source of the buffer amplifier is utilized as a hold capacitor. The fabricated S/H IC in 65nm CMOS process achieved SNR > 20 dB and its frequency flatness < 1 dB across 2 GHz bandwidth at 60 GHz band. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Digtal RF / Direct RF / Undersampling / Receiver / Millimeter-wave / CMOS / RFIC |
| Paper # | MW2021-131 |
| Date of Issue | 2022-02-24 (MW) |
| Conference Information | |
| Committee | MW |
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| Conference Date | 2022/3/3(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Microwave, etc. |
| 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) |
| 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) | A 60 GHz-band S/H CMOS IC for Direct RF Undersampling Reception |
| Sub Title (in English) | |
| Keyword(1) | Digtal RF |
| Keyword(2) | Direct RF |
| Keyword(3) | Undersampling |
| Keyword(4) | Receiver |
| Keyword(5) | Millimeter-wave |
| Keyword(6) | CMOS |
| Keyword(7) | RFIC |
| 1st Author's Name | Tomoyuki Furuichi |
| 1st Author's Affiliation | Tohoku University(Tohoku Univ.) |
| 2nd Author's Name | Nagahiro Yoshino |
| 2nd Author's Affiliation | Tohoku University(Tohoku Univ.) |
| 3rd Author's Name | Mizuki Motoyoshi |
| 3rd Author's Affiliation | Tohoku University(Tohoku Univ.) |
| 4th Author's Name | Suguru Kameda |
| 4th Author's Affiliation | Tohoku University(Tohoku Univ.) |
| 5th Author's Name | Noriharu Suematsu |
| 5th Author's Affiliation | Tohoku University(Tohoku Univ.) |
| Date | 2022-03-04 |
| Paper # | MW2021-131 |
| Volume (vol) | vol.121 |
| Number (no) | MW-400 |
| Page | pp.pp.111-116(MW), |
| #Pages | 6 |
| Date of Issue | 2022-02-24 (MW) |