An Enhanced Class-F Dual-Core VCO With Common-Mode-Noise Self-Cancellation and Isolation Technique

Wu, Qixiu; Deng, Wei; Sun, Yaqian; Jia, Haikun; Liu, Hongzhuo; Zhang, Shiwei; Wang, Zhihua; Chi, Baoyong

doi:10.1109/jssc.2024.3367351

IEEE J. Solid-State Circuits

2024

DOI: 10.1109/jssc.2024.3367351

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An Enhanced Class-F Dual-Core VCO With Common-Mode-Noise Self-Cancellation and Isolation Technique

Qixiu Wu,

Wei Deng,

Yaqian Sun

et al.

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Cited by 3 publications

References 39 publications

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A 28-GHz–195-dB FoM_A 3.72-GHz/V Class-B/C Nested-gm VCO With Coupled Tail Filtering in a 65-nm CMOS

Sub Kim,

Oh,

Baek

2024

IEEE Access

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This paper introduces a class-B/C nested-gm voltage-controlled oscillator (VCO) with coupled tail filtering in the 28 GHz band. The addition of only two cross-coupled NMOSs duplicates the gm to boost the transconductance. This topology exhibits the characteristics of coupled VCOs, such as when two VCOs are interconnected through a transformer. The core area is minimized by implementing a tail-filtering inductor for a secondary harmonic filter in same space with the primary transformer. The proposed VCO is fabricated with a 65-nm CMOS process, an output frequency of 25.4-29.12 GHz, and a KVCO of 3.72 GHz/V. It has a supply voltage of 1 V and consumes 16.8 mW of power. It exhibits a phase noise of -105.34 dBc/Hz with a 1 MHz offset. The proposed VCO has a core area of 0.06 mm 2 . The figure of merit (FoM), FoM according to the area, and FoM according to dB, respectively.

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A 28-GHz–195-dB FoM_A 3.72-GHz/V Class-B/C Nested-gm VCO With Coupled Tail Filtering in a 65-nm CMOS

Sub Kim,

Oh,

Baek

2024

IEEE Access

View full text Add to dashboard Cite

show abstract

A VCO With Robust Implicit Common-Mode Resonance Against Nonideal Decoupling Network

Xu,

Sun,

Xiong

et al. 2024

IEEE Solid-State Circuits Lett.

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An Area-Efficient CMOS Cross-Coupled LC-VCO Using Nested Intertwined Tail Inductors

An,

Nam,

Kim

et al. 2025

IEEE Trans. Circuits Syst. II

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An Enhanced Class-F Dual-Core VCO With Common-Mode-Noise Self-Cancellation and Isolation Technique

Cited by 3 publications

References 39 publications

A 28-GHz–195-dB FoM_A 3.72-GHz/V Class-B/C Nested-gm VCO With Coupled Tail Filtering in a 65-nm CMOS

A 28-GHz–195-dB FoM_A 3.72-GHz/V Class-B/C Nested-gm VCO With Coupled Tail Filtering in a 65-nm CMOS

A VCO With Robust Implicit Common-Mode Resonance Against Nonideal Decoupling Network

An Area-Efficient CMOS Cross-Coupled LC-VCO Using Nested Intertwined Tail Inductors

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An Enhanced Class-F Dual-Core VCO With Common-Mode-Noise Self-Cancellation and Isolation Technique

Cited by 3 publications

References 39 publications

A 28-GHz–195-dB FoMA 3.72-GHz/V Class-B/C Nested-gm VCO With Coupled Tail Filtering in a 65-nm CMOS

A 28-GHz–195-dB FoMA 3.72-GHz/V Class-B/C Nested-gm VCO With Coupled Tail Filtering in a 65-nm CMOS

A VCO With Robust Implicit Common-Mode Resonance Against Nonideal Decoupling Network

An Area-Efficient CMOS Cross-Coupled LC-VCO Using Nested Intertwined Tail Inductors

Contact Info

Product

Resources

About

A 28-GHz–195-dB FoM_A 3.72-GHz/V Class-B/C Nested-gm VCO With Coupled Tail Filtering in a 65-nm CMOS

A 28-GHz–195-dB FoM_A 3.72-GHz/V Class-B/C Nested-gm VCO With Coupled Tail Filtering in a 65-nm CMOS