[논문]Design of High-Gain Sub-THz Regenerative Amplifiers Based on Double-Gmax Gain Boosting Technique

Park, Dae-Woong; Utomo, Dzuhri Radityo; Yun, Byeonghun; Mahmood, Hafiz Usman; Hong, Jong-Phil; Lee, Sang-Gug

doi:10.1109/jssc.2021.3092168

[해외논문] Design of High-Gain Sub-THz Regenerative Amplifiers Based on Double-Gmax Gain Boosting Technique

IEEE journal of solid-state circuits, v.56 no.11, 2021년, pp.3388 - 3398

Park, Dae-Woong (Korea Advanced Institute of Science and Technology (KAIST), School of Electrical Engineering, Daejeon, South Korea) , Utomo, Dzuhri Radityo (Korea Advanced Institute of Science and Technology (KAIST), School of Electrical Engineering, Daejeon, South Korea) , Yun, Byeonghun (Korea Advanced Institute of Science and Technology (KAIST), School of Electrical Engineering, Daejeon, South Korea) , Mahmood, Hafiz Usman (Korea Advanced Institute of Science and Technology (KAIST), School of Electrical Engineering, Daejeon, South Korea) , Hong, Jong-Phil (Chungbuk National University, School of Electrical Engineering, Cheongju, South Korea) , Lee, Sang-Gug (Korea Advanced Institute of Science and Technology (KAIST), School of Electrical Engineering, Daejeon, South Korea)

Abstract ▼ AI-Helper

This article reports the concept of a double maximum achievable gain (double- $G_{\mathrm{ max}}$) core for the implementation of sub-terahertz high-gain amplifier design. The double- $G_{\mathrm{ max}}$ core is a $G_{\mathrm{ max}}$ core that adopts another linear, lossless, and reciprocal network that satisfies the $G_{\mathrm{ max}}$ condition onto an even number of cascaded transistor-level $G_{\mathrm{ max}}$ cores. It is shown that the double- $G_{\mathrm{ max}}$ core, due to its regenerative nature, can achieve much higher gain per stage than that of the same number of cascaded $G_{\mathrm{ max}}$ cores while satisfying the unconditional stability. Implemented in a 65-nm CMOS process, by adopting the proposed double- $G_{\mathrm{ max}}$ core, 247- and 272-GHz two-stage amplifiers achieve the peak gain of 18 and 15 dB, the gain per stage of 9 and 7.5 dB, and the PAE of 4.44% and 2.37%, respectively, while dissipating 21.5 mW.

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DOI : 10.1109/JSSC.2021.3092168
IEEE : 저널 > 논문

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