A 77/79-GHz Frequency Generator in 16-nm CMOS for FMCW Radar Applications Based on a 26-GHz Oscillator with Co-Generated Third Harmonic
Feng-Wei Kuo (Taiwan Semiconductor Manufacturing Company (TSMC))
Z. Zong (TU Delft - Electronics)
Huan Neng Ron Chen (Taiwan Semiconductor Manufacturing Company (TSMC))
Lan Chou Cho (Taiwan Semiconductor Manufacturing Company (TSMC))
C. P. Jou (Taiwan Semiconductor Manufacturing Company (TSMC))
Mark Chen (Taiwan Semiconductor Manufacturing Company (TSMC))
R.B. Staszewski (TU Delft - Electronics, University College Dublin)
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Abstract
This paper presents a digitally controlled frequency generator for dual frequency-band radar system that is optimized for 16 nm FinFET CMOS. It is based on a 21% wide tuning range,fine-resolution DCO with only switchable metal capacitors. A third-harmonic boosting DCO simultaneously generates 22.5-28 GHz and sufficiently strong 68-84 GHz signals to satisfy short-range radar (SRR) and medium/long range radar (M/LRR) requirements. The 20.2 mW DCO emits -97 dBc/Hz at 1 MHz offset from 77 GHz,while fully satisfying metal density rules. It occupies 0.07 mm2,thus demonstrating both 43% power and 47% area reductions. The phase noise and FoMT (figure-of-merit with tuning range) are improved by 1.8 dB and 0.2 dB,respectively,compared to state-of-the-art.