Tuning

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An Inductive-Load-Modulated Multiband Phase Shifter With <0.38°/0.12-dB RMS Errors

An Inductive-Load-Modulated Multiband Phase Shifter With <0.38°/0.12-dB RMS Errors 150 150
Author(s): Xinyi Wu, Chenxu Zhao, Hui Chen, Xun Bao, Yaolong Hu, Aoyang Zhang, Leibo Liu

Abstract:

This letter presents a compact, multiband reflection-type phase shifter (RTPS) implemented in 65-nm CMOS that overcomes the narrowband limitations of conventional passive loads. The proposed design utilizes an inductive-load modulation. By injecting a secondary signal to actively manipulate the magnetic flux, the equivalent inductance is boosted to enable operation across …

Published in: IEEE Solid-State Circuits Letters
Page(s): 170 – 173
Year of Publication: 2026
Electronic ISSN: 2573-9603
DOI: 10.1109/LSSC.2026.3694867
Publisher: IEEE

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A 24.5–45.2-GHz Low-Jitter Compact Differentially Injection-Locked Clock Multiplier With Folded-Inductor-Based Magnetic-Flux Cancellation

A 24.5–45.2-GHz Low-Jitter Compact Differentially Injection-Locked Clock Multiplier With Folded-Inductor-Based Magnetic-Flux Cancellation 150 150
Author(s): Feifan Hong, Jiawen Chen, Pingda Guan, Sayan Kumar, Robert Bogdan Staszewski, Teerachot Siriburanon

Abstract:

In this article, we present a differentially injection-locked clock multiplier (ILCM) featuring an ultra-wide frequency tuning range (TR) and low jitter, achieved through a compact folded-inductor-based magnetic-flux cancellation technique. A co-designed series-LC dual-mode quadrature ring oscillator (QRO) and edge-combining frequency doubler operating in the mm-wave band jointly extend the TR …

Published in: IEEE Journal of Solid-State Circuits
Page(s): 1410 – 1424
Year of Publication: 2026
Electronic ISSN: 1558-173X
DOI: 10.1109/JSSC.2025.3640957
Publisher: IEEE

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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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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

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A 60-GHz Class- F2,3 Standing-Wave Oscillator Employing Triple-Line Resonator Achieving −189-dBc/Hz FoM in 65-nm CMOS

A 60-GHz Class- F2,3 Standing-Wave Oscillator Employing Triple-Line Resonator Achieving −189-dBc/Hz FoM in 65-nm CMOS 150 150
Author(s): Wei-Yu Lin, Nikhil Jain, Jun-Chau Chien

Abstract:

Implementing oscillators with harmonic engineering beyond 60-GHz poses significant challenges due to the need for small inductors resonating beyond 120 GHz. To address this issue, this work presents a 60-GHz standing-wave oscillator (SWO) with both second- and third-harmonic boosting for phase noise reduction. A triple-line resonator is proposed to sustain both …

Published in: IEEE Solid-State Circuits Letters
Page(s): 158 – 161
Year of Publication: 2026
Electronic ISSN: 2573-9603
DOI: 10.1109/LSSC.2026.3693153
Publisher: IEEE

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Dual-Band Voltage-Controlled Oscillator for CB and HF RFID Bands in a Flexible IGZO Technology

Dual-Band Voltage-Controlled Oscillator for CB and HF RFID Bands in a Flexible IGZO Technology 150 150
Author(s): Lautaro N. Petrauskas, Bahman K. Boroujeni, Frank Ellinger

Abstract:

In this work, a cross-coupled voltage-controlled oscillator (VCO) for the high frequency RFID and citizen bands (CBs) is investigated, and implemented on a flexible Indium gallium zinc oxide thin film transistor (TFT) technology. To circumvent the challenges of integrating passive components in this frequency range and minimize the circuit’s …

Published in: IEEE Solid-State Circuits Letters
Page(s): 33 – 36
Year of Publication: 2026
Electronic ISSN: 2573-9603
DOI: 10.1109/LSSC.2026.3651909
Publisher: IEEE

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A 0.015-mm2 0.5-V Synthesizable Hybrid PLL With Multi-Phase Linear Proportional-Gain Paths

A 0.015-mm2 0.5-V Synthesizable Hybrid PLL With Multi-Phase Linear Proportional-Gain Paths 150 150
Author(s): Qibang Sun, Liqun Feng, Woogeun Rhee, Hanjun Jiang

Abstract:

This brief presents a 0.015-mm2 0.5-V synthesizable hybrid phase locked loop (PLL). All blocks including an analog proportional-gain path can be logically or physically synthesized with digital cells and hardware languages. To mitigate the mismatch and common-mode fluctuation problems of a voltage-mode phase detector, multi-phase proportional-gain paths are designed for …

Published in: IEEE Solid-State Circuits Letters
Page(s): 1 – 1
Year of Publication: 2025
Electronic ISSN: 2573-9603
DOI: 10.1109/LSSC.2025.3649215
Publisher: IEEE

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A Fast-Settling mm-Wave LO With I/Q-Calibrated SSB Mixer and Frequency-Tuned ILO Filter Achieving Sub-ns Settling Time and −56 dBc Spur

A Fast-Settling mm-Wave LO With I/Q-Calibrated SSB Mixer and Frequency-Tuned ILO Filter Achieving Sub-ns Settling Time and −56 dBc Spur 150 150
Author(s): Jaewon Oh, Cheol So, Hyojun Kim, Songcheol Hong, SeongHwan Cho

Abstract:

This article presents a fast-settling 60-GHz local oscillator (LO) for stepped-carrier orthogonal frequency-division multiplexing (OFDM), employing an I/Q-calibrated single-sideband (SSB) mixer with a frequency-tuned injection-locked oscillator (ILO) filter. The SSB mixer enables instantaneous frequency hopping, while the ILO acts as a high- $Q$ bandpass filter that suppresses mixer-induced spurs. …

Published in: IEEE Journal of Solid-State Circuits
Page(s): 1 – 14
Year of Publication: 2025
Electronic ISSN: 1558-173X
DOI: 10.1109/JSSC.2025.3634591
Publisher: IEEE

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kNOT: A 2-D Distributed Network-on-Textile Architecture With Direct Die-to-Yarn Integration of 0.6 × 2.15 mm2 SoC and bySPI Chiplets for Wearable Computing

kNOT: A 2-D Distributed Network-on-Textile Architecture With Direct Die-to-Yarn Integration of 0.6 × 2.15 mm2 SoC and bySPI Chiplets for Wearable Computing 150 150
Author(s): Anjali Agrawal, Zhenghong Chen, Braden E. Desman, Jinhua Wang, Akiyoshi Tanaka, Fahim Foysal, Charles D. Hess, Will Farrell, Jim Owens, Daniel S. Truesdell, Benton H. Calhoun

Abstract:

This article presents kNOT, a scalable, distributed, and 2-D Network-On-Textile (kNOT) comprising miniaturized systems on chip (SoCs) and bypass SPI (bySPI) networking chiplets that together enable diverse networking and computational tasks. To preserve garment comfort and flexibility, kNOT eliminates bulky boards and interposers through direct-die attachment to embroidered yarns. The …

Published in: IEEE Journal of Solid-State Circuits
Page(s): 103 – 115
Year of Publication: 2026
Electronic ISSN: 1558-173X
DOI: 10.1109/JSSC.2025.3624099
Publisher: IEEE

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