Harmonic analysis

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A Millimeter-Wave Standing-Wave Oscillator With Frequency-Specific Wave-Velocity Control Demonstrating Class-F Effects

A Millimeter-Wave Standing-Wave Oscillator With Frequency-Specific Wave-Velocity Control Demonstrating Class-F Effects 150 150
Author(s): Wei-Yu Lin, Jun-Chau Chien

Abstract:

Implementing dual-resonance class-F oscillators with transformer feedback beyond 60 GHz poses significant challenges due to the limited third-harmonic tank impedance when using small coils with low coupling factors. To address these limitations and leverage the phase noise advantages of class-F operation, this letter introduces a standing-wave oscillator (SWO) topology featuring an …

Published in: IEEE Solid-State Circuits Letters
Page(s): 181 – 184
Year of Publication: 2025
Electronic ISSN: 2573-9603
DOI: 10.1109/LSSC.2025.3578942
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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