首页|A V-Band FMCW Signal Generator With Hybrid Dual-Path VCO Technique Achieving 13.6-GHz Chirp Bandwidth

A V-Band FMCW Signal Generator With Hybrid Dual-Path VCO Technique Achieving 13.6-GHz Chirp Bandwidth

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  • NETL
  • NSTL
  • IEEE
This brief presents a V-band frequency-modulation continuous wave (FMCW) signal generator for high-resolution radar applications. The proposed hybrid dual-path voltage-controlled oscillator (VCO) employs a digital-assisted capacitance decoding scheme, fully utilizing the tunable capacitance to achieve wideband chirping while maintaining high chirp linearity. To verify the proposed scheme, a radar transceiver with two transmit (TX) channels, and four receive (RX) channels is designed and fabricated in a 65-nm CMOS process. The FMCW signal generator occupies 2.98 mm2 and consumes 120 mW. A measured maximum chirp bandwidth of 13.6 GHz is achieved at TX output with an rms frequency error of 0.008%. The measured phase noise of the VCO is −97.37 dBc/Hz at a 1-MHz offset from a 60-GHz carrier. The proposed FMCW signal generator demonstrates a state-of-the-art chirp bandwidth at V-band.

ChirpVoltage-controlled oscillatorsSignal generatorsFrequency conversionCapacitanceRandom access memoryRadarPhase locked loopsSwitchesSignal resolution

Jiangbo Chen、Shengjie Wang、Quanyong Li、Wenyan Zhao、Jingwen Xu、Nayu Li、Chunyi Song、Qun Jane Gu、Zhiwei Xu

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Institute of Marine Electronic and Intelligent System, Ocean College, Zhejiang University, Zhoushan, China

Institute of Marine Electronic and Intelligent System, Ocean College, Zhejiang University, Zhoushan, China|Donghai Laboratory, Institute of Intelligent Marine Sensing and Communications, Zhoushan, China

School of Electrical and Computer Engineering, College of Engineering, Georgia Institute of Technology, Atlanta, GA, USA

2025

10.1109/TCSII.2025.3547342

IEEE transactions on circuits and systems, Part II. Express briefs

IEEE transactions on circuits and systems, Part II. Express briefs

ISSN：
年,卷(期)：2025.72(5)
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