Projects per year
Abstract
Design and analysis of low-phase-noise low quadrature error V-band subharmonically injection-locked quadrature voltage-controlled oscillator (QVCO) and quadrature frequency-locked loop (FLL) are presented in this paper using 90-nm CMOS process. A modified self-injection technique is employed in the QVCO to reduce quadrature error and phase noise. A transformer coupled topology is adopted to widen the locking range (LR) of the subharmonically injection-locked QVCO. With a subharmonic number of 3, the proposed subharmonically injection-locked QVCO demonstrates an overall LR of 3.5 GHz, a phase noise of -126.8 dBc/Hz at 1-MHz offset, a phase error of 0.32°, and an amplitude error of 0.26 dB. Moreover, the quadrature FLL is developed using the QVCO, and the subharmonic number can be up to 32 since the control voltage of the QVCO is adaptively aligned to overcome the LR. The operation frequency of the subharmonically injection-locked quadrature FLL is from 49 to 51.4 GHz. The measured amplitude and phase errors are 0.5 dB and 2.5°, respectively. Between 15 °C and 50 °C, the measured minimum phase noise at 1-MHz offset and jitter integrated from 1 kHz to 40 MHz are lower than -106 dBc/Hz and 110 fs, respectively. Compared to the prior art, the proposed V -band subharmonically injection-locked quadrature QVCO and quadrature FLL feature excellent performance and good robustness.
Original language | English |
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Pages (from-to) | 2851-2866 |
Number of pages | 16 |
Journal | IEEE Transactions on Microwave Theory and Techniques |
Volume | 66 |
Issue number | 6 |
DOIs | |
State | Published - Jun 2018 |
Keywords
- CMOS
- RFIC/ monolithic microwave integrated circuit design
- frequency-locked loop (FLL)
- low-phase-noise oscillators
- millimeter-wave circuits
- quadrature modulation
- voltage-controlled oscillator (VCO)
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Dive into the research topics of 'Design and Analysis of CMOS Low-Phase-Noise Low Quadrature Error v -Band Subharmonically Injection-Locked Quadrature FLL'. Together they form a unique fingerprint.Projects
- 3 Finished
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Development of Millimeter-Wave Integrated Circuits for Active and Passive Detection (II)
Chiou, H.-K. (PI)
1/01/18 → 30/04/19
Project: Research
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Development of High Performance Frontend Integrated Circuits for Microwave and Millimeter-Wave Measurement Instruments(2/3)
Chang, H.-Y. (PI)
1/08/17 → 31/07/18
Project: Research
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Research on W-Band Radar Frontend Integrated Circuits for Miniature Unmanned Aerial Vehicle Applications(1/3)
Chang, H.-Y. (PI)
1/08/17 → 31/07/18
Project: Research