A 63-89-kHz 1/f3 Phase Noise Corner QVCO Using Enhanced Wideband-Harmonic-Shaping Technique

Zhan Qu; Ya Zhao; Ge Gao; Chao Fan; Feng Liang; Li Geng

doi:10.1109/LMWT.2024.3436868

A 63-89-kHz 1/f³ Phase Noise Corner QVCO Using Enhanced Wideband-Harmonic-Shaping Technique

Zhan Qu
, Ya Zhao
, Ge Gao
, Chao Fan
, Feng Liang
, Li Geng

Faculty of Electronic and Information Engineering

Xi'an Jiaotong University

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

A quadrature voltage-controlled oscillator (QVCO) utilizing the enhanced wideband-harmonic-shaping technique to improve phase noise (PN) and reduce the 1/f³ PN corner is presented. Specifically, our QVCO uses triple-coil magnetic coupling for quadrature phase generation, additionally boosts the common-mode (CM) impedance and harmonic voltage, and contributes to a well-defined CM current returning path for PN improvement and flicker noise upconversion reduction. Besides, the head resonator (HR) enables wideband-harmonic-shaping operation and facilitates without manual second harmonic alignment. The QVCO is implemented in 55-nm CMOS and occupies a core area of 0.362 mm². The measured peak PN is -124.2 dBc/Hz at 1-MHz offset, and the estimated 1/f³ PN corner varies from 63 to 89 kHz across the entire operating range of 17% (4.14-4.97 GHz).

Original language	English
Pages (from-to)	1263-1266
Number of pages	4
Journal	IEEE Microwave and Wireless Technology Letters
Volume	34
Issue number	11
DOIs	https://doi.org/10.1109/LMWT.2024.3436868
State	Published - 2024

Keywords

Common mode (CM)
flicker noise
harmonic shaping
phase noise (PN)
quadrature voltage-controlled oscillator (QVCO)
returning path

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10.1109/LMWT.2024.3436868

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title = "A 63-89-kHz 1/f3 Phase Noise Corner QVCO Using Enhanced Wideband-Harmonic-Shaping Technique",

abstract = "A quadrature voltage-controlled oscillator (QVCO) utilizing the enhanced wideband-harmonic-shaping technique to improve phase noise (PN) and reduce the 1/f3 PN corner is presented. Specifically, our QVCO uses triple-coil magnetic coupling for quadrature phase generation, additionally boosts the common-mode (CM) impedance and harmonic voltage, and contributes to a well-defined CM current returning path for PN improvement and flicker noise upconversion reduction. Besides, the head resonator (HR) enables wideband-harmonic-shaping operation and facilitates without manual second harmonic alignment. The QVCO is implemented in 55-nm CMOS and occupies a core area of 0.362 mm2. The measured peak PN is -124.2 dBc/Hz at 1-MHz offset, and the estimated 1/f3 PN corner varies from 63 to 89 kHz across the entire operating range of 17\% (4.14-4.97 GHz).",

keywords = "Common mode (CM), flicker noise, harmonic shaping, phase noise (PN), quadrature voltage-controlled oscillator (QVCO), returning path",

author = "Zhan Qu and Ya Zhao and Ge Gao and Chao Fan and Feng Liang and Li Geng",

note = "Publisher Copyright: {\textcopyright} 2023 IEEE.",

year = "2024",

doi = "10.1109/LMWT.2024.3436868",

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T1 - A 63-89-kHz 1/f3 Phase Noise Corner QVCO Using Enhanced Wideband-Harmonic-Shaping Technique

AU - Qu, Zhan

AU - Zhao, Ya

AU - Gao, Ge

AU - Fan, Chao

AU - Liang, Feng

AU - Geng, Li

PY - 2024

Y1 - 2024

N2 - A quadrature voltage-controlled oscillator (QVCO) utilizing the enhanced wideband-harmonic-shaping technique to improve phase noise (PN) and reduce the 1/f3 PN corner is presented. Specifically, our QVCO uses triple-coil magnetic coupling for quadrature phase generation, additionally boosts the common-mode (CM) impedance and harmonic voltage, and contributes to a well-defined CM current returning path for PN improvement and flicker noise upconversion reduction. Besides, the head resonator (HR) enables wideband-harmonic-shaping operation and facilitates without manual second harmonic alignment. The QVCO is implemented in 55-nm CMOS and occupies a core area of 0.362 mm2. The measured peak PN is -124.2 dBc/Hz at 1-MHz offset, and the estimated 1/f3 PN corner varies from 63 to 89 kHz across the entire operating range of 17% (4.14-4.97 GHz).

AB - A quadrature voltage-controlled oscillator (QVCO) utilizing the enhanced wideband-harmonic-shaping technique to improve phase noise (PN) and reduce the 1/f3 PN corner is presented. Specifically, our QVCO uses triple-coil magnetic coupling for quadrature phase generation, additionally boosts the common-mode (CM) impedance and harmonic voltage, and contributes to a well-defined CM current returning path for PN improvement and flicker noise upconversion reduction. Besides, the head resonator (HR) enables wideband-harmonic-shaping operation and facilitates without manual second harmonic alignment. The QVCO is implemented in 55-nm CMOS and occupies a core area of 0.362 mm2. The measured peak PN is -124.2 dBc/Hz at 1-MHz offset, and the estimated 1/f3 PN corner varies from 63 to 89 kHz across the entire operating range of 17% (4.14-4.97 GHz).

KW - Common mode (CM)

KW - flicker noise

KW - harmonic shaping

KW - phase noise (PN)

KW - quadrature voltage-controlled oscillator (QVCO)

KW - returning path

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DO - 10.1109/LMWT.2024.3436868

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SN - 2771-957X

VL - 34

SP - 1263

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JO - IEEE Microwave and Wireless Technology Letters

JF - IEEE Microwave and Wireless Technology Letters

IS - 11

ER -

A 63-89-kHz 1/f³ Phase Noise Corner QVCO Using Enhanced Wideband-Harmonic-Shaping Technique

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Keywords

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