1/f noise

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A Self-Injection LC Oscillator for Flicker Noise Reduction

A Self-Injection LC Oscillator for Flicker Noise Reduction 150 150
Author(s): Bahram Jafari, Ali Ghafari, Sankaran Aniruddhan, Shahriar Mirabbasi, Sudip Shekhar

Abstract:

Self-injection has been used in lasers and photonic integrated circuits to reduce the laser’s phase noise (PN). We show that self-injection can be leveraged in GHz LC oscillators as well. Our oscillator employs a current-domain self-injection technique by leveraging second-harmonic extraction, capacitive phase shifting, and self-mixing through the oscillator’…

Published in: IEEE Journal of Solid-State Circuits
Page(s): 816 – 829
Year of Publication: 2026
Electronic ISSN: 1558-173X
DOI: 10.1109/JSSC.2025.3643322
Publisher: IEEE

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An Aging-Robust 32-MHz RC Frequency Reference With 0.4-ppm Allan Deviation and ±1550-ppm Inaccuracy From −40 °C to 125 °C After a 1-Point Trim

An Aging-Robust 32-MHz RC Frequency Reference With 0.4-ppm Allan Deviation and ±1550-ppm Inaccuracy From −40 °C to 125 °C After a 1-Point Trim 150 150
Author(s): Sining Pan, Xiaohan Liu, Junlong Zeng, Yihang Cheng, Kofi. A. A. Makinwa, Huaqiang Wu

Abstract:

This letter presents an aging-robust 32-MHz RC frequency reference based on a frequency-locked-loop (FLL). With a temperature compensation scheme that combines BJTs and aging-robust diffusion resistors, the FLL achieves ±1550-ppm inaccuracy from $-40~^{\circ }$ C to $125~^{\circ }$ C after batch calibration and a low-cost 1-point trim, which increases to ±2350-ppm …

Published in: IEEE Solid-State Circuits Letters
Page(s): 81 – 84
Year of Publication: 2026
Electronic ISSN: 2573-9603
DOI: 10.1109/LSSC.2026.3664504
Publisher: IEEE

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0.13 K NETD D-Band CMOS Passive Imager With Noise Suppression Analysis

0.13 K NETD D-Band CMOS Passive Imager With Noise Suppression Analysis 150 150
Author(s): Zahra Mohseni, Sajjad Sabbaghi, Hai Yu, Peixin Han, Yuhao Yuan, Qun Jane Gu

Abstract:

This article presents a new system design and in-depth analysis of a wideband, low-power passive imaging receiver based on a Dicke-switch architecture, implemented in 28 nm CMOS technology. The proposed structure employs a three-coil gm-boosting technique for the low-noise amplifier (LNA). This approach reduces the LNA’s noise figure (NF) and …

Published in: IEEE Journal of Solid-State Circuits
Page(s): 830 – 846
Year of Publication: 2026
Electronic ISSN: 1558-173X
DOI: 10.1109/JSSC.2025.3646943
Publisher: IEEE

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A 9-GHz Low-In-Band Noise Sub-Sampling-Chopper PLL With Charge-Share Canceling Technique

A 9-GHz Low-In-Band Noise Sub-Sampling-Chopper PLL With Charge-Share Canceling Technique 150 150
Author(s): Xiangjian Kong, Kai Xu, Huanlin Xie, Mingchao Jian, Hao Lian, Robert Bogdan Staszewski, Chunbing Guo

Abstract:

This article presents a low-jitter sub-sampling chopper phase-locked loop (SS-CPLL) that incorporates a novel chopping charge pump (C-CP) to mitigate 1/f noise in short-channel devices operating at a low supply voltage of 0.75 V. A charge-share cancellation technique is introduced to suppress ripple generated by residual charge from the previous reference …

Published in: IEEE Journal of Solid-State Circuits
Page(s): 1384 – 1396
Year of Publication: 2025
Electronic ISSN: 1558-173X
DOI: 10.1109/JSSC.2025.3532504
Publisher: IEEE

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