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A Capacitor-Free Hybrid-Process Low Dropout Regulator With Ultrahigh-Gain Amplifier and Super Source Follower for 0.297 mV/A Load Regulation and 0.024 mV/V Line Regulation

A Capacitor-Free Hybrid-Process Low Dropout Regulator With Ultrahigh-Gain Amplifier and Super Source Follower for 0.297 mV/A Load Regulation and 0.024 mV/V Line Regulation 150 150
Author(s): Yu-Ting Huang, Xiao-Quan Wu, Chi-Yu Chen, Po-Jui Chiu, Chien-Wei Cho, Tz-Wun Wang, Ke-Horng Chen, Ying-Hsi Lin, Shian-Ru Lin, Tsung-Yen Tsai, Sheng-Hsi Hung, Chih-Fang Huang, Philex Ming-Yan Fan, Tsorng-Juu Liang, Hann-Huei Tsai

Abstract:

The proposed capacitor-free hybrid-process low-dropout regulator (LDO) achieves 900-mA maximum current capacity and 99.99% peak current efficiency with 90 $\mu $ A quiescent current. By combining GaN and silicon processes, the proposed Ultrahigh gain amplifier (UHGA) enables a high loop gain to achieve 0.297-mV/A load regulation and 0.024-mV/V line regulation. Furthermore, …

Published in: IEEE Journal of Solid-State Circuits
Page(s): 1 – 13
Year of Publication: 2026
Electronic ISSN: 1558-173X
DOI: 10.1109/JSSC.2026.3702962
Publisher: IEEE

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A Ka-Band Time-Modulated Phase-Invariant Variable-Gain Amplifier With 30-dB Gain Tuning Based on Duty-Cycle Control

A Ka-Band Time-Modulated Phase-Invariant Variable-Gain Amplifier With 30-dB Gain Tuning Based on Duty-Cycle Control 150 150
Author(s): Dongfan Xu, Minzhe Tang, Haiyun Gu, Yuxuan Liu, Yilun Chen, Ziyuan Ren, Minghao Fan, Daxu Zhang, Yi Zhang, Duo Li, Zheng Li, Zezheng Liu, Chun Wang, Yudai Yamazaki, Yuncheng Zhang, Kazuaki Kunihiro, Hiroyuki Sakai, Atsushi Shirane, Kenichi Okada

Abstract:

This article presents a time-modulated variable-gain amplifier (VGA) employing a clock-sampling topology governed by a duty-cycle control (DCC) loop. By modulating the effective operation time of the amplifier rather than altering its RF bias conditions, for precise tuning of the clock duty cycle, enabling phase consistency at millimeter-wave frequencies. The …

Published in: IEEE Journal of Solid-State Circuits
Page(s): 1 – 13
Year of Publication: 2026
Electronic ISSN: 1558-173X
DOI: 10.1109/JSSC.2026.3695362
Publisher: IEEE

View on IEEE Xplore

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