@inproceedings{c235e83f206e4d2b842b533f3b61c5b5,
title = "124-GHz CMOS quadrature voltage-controlled oscillator with fundamental injection locking",
abstract = "A 124-GHz injection-locked quadrature voltage-controlled oscillator (ILQVCO) fabricated using a 40-nm CMOS process is presented. It locks onto a fundamental reference signal at 124 GHz generated on-chip from an external reference at 31 GHz, thereby avoiding generation of spurious noise commonly se en in the phase noise spectra of subharmonically injection-locked VCOs. The QVCO's phase noise levels in the free-running and injection-locked conditions are -87 dBc/Hz and -117 dBc/Hz, respectively, at 1-MHz offset. The high fundamental oscillation frequency and the low phase noise are realized by adopting a ring-type topology and transformers for inter-stage impedance matching. The ILQVCO is combined with an on-chip double-balanced quadrature modulator for vector signal generation. A 32QAM signal thus generated achieved a data rate of 25 Gb/s with an error-vector magnitude (EVM) of 5.1%.",
keywords = "CMOS, QVCO, injection locking, millimeter wave, phase modulation",
author = "Kyoya Takano and Kosuke Katayama and Takeshi Yoshida and Shuhei Amakawa and Minoru Fujishima",
note = "Publisher Copyright: {\textcopyright} 2015 IEEE.; 11th IEEE Asian Solid-State Circuits Conference, A-SSCC 2015 ; Conference date: 09-11-2015 Through 11-11-2015",
year = "2016",
month = jan,
day = "19",
doi = "10.1109/ASSCC.2015.7387510",
language = "English",
series = "2015 IEEE Asian Solid-State Circuits Conference, A-SSCC 2015 - Proceedings",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
booktitle = "2015 IEEE Asian Solid-State Circuits Conference, A-SSCC 2015 - Proceedings",
}