TY - GEN
T1 - An Image-Reused Phase-Tuning mm-Wave QVCO with a FoMT of -204 dBc/Hz
AU - Zhu, Yue
AU - Lu, Yuri
AU - Shi, Chunqi
AU - Huang, Leilei
AU - Deng, Hao
AU - Chen, Jinghong
AU - Zhang, Runxi
N1 - Publisher Copyright:
© 2025 IEEE.
PY - 2025
Y1 - 2025
N2 - This paper presents an image-reused phase tuning technique (IPTT) for millimeter-wave (mm-wave) quadrature voltage-controlled oscillators (QVCOs). The phase shifter addresses the -45°-45° phase rotation limitation, extending it to 135°-225°. This enhancement extends the QVCO tuning range without deteriorating phase noise. To facilitate the expanded phase tuning range, a transformer-based fourth-order resonator providing bimodal impedance is employed in the proposed QVCO. The bimodal impedance ensures intra-band monotonicity and inter-band continuity, optimizing the overall tuning range. Mismatch mitigation and PLL integration of the proposed QVCO are also discussed. A prototype QVCO, operating from 31.6 to 49.2 GHz, is fabricated in a 40-nm CMOS process. Measurement results show that the QVCO consumes 10 mW of power and achieves a tuning range of 44% and phase noise of -129 dBc / Hz at 10-MHz offset. This leads to a figure of merit (FoMT) of -204 dBc / Hz at a 10-MHz offset.
AB - This paper presents an image-reused phase tuning technique (IPTT) for millimeter-wave (mm-wave) quadrature voltage-controlled oscillators (QVCOs). The phase shifter addresses the -45°-45° phase rotation limitation, extending it to 135°-225°. This enhancement extends the QVCO tuning range without deteriorating phase noise. To facilitate the expanded phase tuning range, a transformer-based fourth-order resonator providing bimodal impedance is employed in the proposed QVCO. The bimodal impedance ensures intra-band monotonicity and inter-band continuity, optimizing the overall tuning range. Mismatch mitigation and PLL integration of the proposed QVCO are also discussed. A prototype QVCO, operating from 31.6 to 49.2 GHz, is fabricated in a 40-nm CMOS process. Measurement results show that the QVCO consumes 10 mW of power and achieves a tuning range of 44% and phase noise of -129 dBc / Hz at 10-MHz offset. This leads to a figure of merit (FoMT) of -204 dBc / Hz at a 10-MHz offset.
KW - Millimeter-wave (mm-wave)
KW - tuning range extension
KW - voltage-controlled oscillator (VCO)
UR - https://www.scopus.com/pages/publications/105012899841
U2 - 10.1109/RFIC61188.2025.11082963
DO - 10.1109/RFIC61188.2025.11082963
M3 - 会议稿件
AN - SCOPUS:105012899841
T3 - Digest of Papers - IEEE Radio Frequency Integrated Circuits Symposium
SP - 79
EP - 82
BT - 2025 IEEE Radio Frequency Integrated Circuits Symposium, RFIC 2025
A2 - Gu, Jane
A2 - Okada, Kenichi
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2025 IEEE Radio Frequency Integrated Circuits Symposium, RFIC 2025
Y2 - 15 June 2025 through 17 June 2025
ER -