An Ultra-Low-Jitter, mmW-Band Frequency Synthesizer Based on Digital Subsampling PLL Using Optimally Spaced Voltage Comparators
Sign Up to like & getrecommendations! Published in 2019 at "IEEE Journal of Solid-State Circuits"
DOI: 10.1109/jssc.2019.2936765
Abstract: This article presents a cascaded architecture of a frequency synthesizer to generate ultra-low-jitter output signals in a millimeter-wave (mmW) frequency band from 28 to 31 GHz. The mmW-band injection-locked frequency multiplier (ILFM) placed at the… read more here.
Keywords: voltage; frequency; band; frequency synthesizer ... See more keywords
A Low-Noise Frequency Synthesizer Using Multiphase Generation and Combining Techniques
Sign Up to like & getrecommendations! Published in 2020 at "IEEE Journal of Solid-State Circuits"
DOI: 10.1109/jssc.2019.2951384
Abstract: A ring oscillator (RO)-based low-noise frequency synthesizer is presented. Phase noise degradation caused by jitter accumulation in conventional RO-based synthesizers is alleviated by increasing the update rate. To this end, multiple phases of the crystal… read more here.
Keywords: noise frequency; frequency; clock; low noise ... See more keywords
A Cryo-CMOS Wideband Quadrature Receiver With Frequency Synthesizer for Scalable Multiplexed Readout of Silicon Spin Qubits
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Journal of Solid-State Circuits"
DOI: 10.1109/jssc.2022.3174605
Abstract: In this article, a cryo-CMOS receiver integrated with a frequency synthesizer for scalable multiplexed readout of qubits is presented, focusing on radio frequency (RF) reflectometry readout of silicon-based semiconductor spin qubits/quantum dots. The proposed spin… read more here.
Keywords: quadrature; frequency; cryo cmos; frequency synthesizer ... See more keywords
A 22.5â31.2-GHz Continuously Tuning Frequency Synthesizer With 8.7-GHz Chirp for FMCW Applications
Sign Up to like & getrecommendations! Published in 2020 at "IEEE Microwave and Wireless Components Letters"
DOI: 10.1109/lmwc.2020.3010089
Abstract: This letter presents a fractional-N frequency synthesizer with an ultrawideband continuously tuning range of 32.4% centered at 26.85- and 8.7-GHz chirp for frequency-modulated continuous-wave (FMCW) radars. The synthesizer uses a fractional-N 9-GHz charge-pump phase-locked loop… read more here.
Keywords: synthesizer; frequency; ghz chirp; frequency synthesizer ... See more keywords
Analysis of Wandering Spur Patterns in a Fractional- $N$ Frequency Synthesizer With a MASH-Based Divider Controller
Sign Up to like & getrecommendations! Published in 2020 at "IEEE Transactions on Circuits and Systems I: Regular Papers"
DOI: 10.1109/tcsi.2019.2958781
Abstract: The Multi-stAge noise SHaping Digital Delta-Sigma Modulator (MASH DDSM), which is commonly used as a divider controller in a fractional- $N$ frequency synthesizer, can produce a time-varying periodic pattern of tones in the output spectrum… read more here.
Keywords: synthesizer; tex math; divider controller; inline formula ... See more keywords
MASH-Based Divider Controllers for Mitigation of Wandering Spurs in a Fractional-N Frequency Synthesizer
Sign Up to like & getrecommendations! Published in 2021 at "IEEE Transactions on Circuits and Systems I: Regular Papers"
DOI: 10.1109/tcsi.2020.3035538
Abstract: The divider controller can contribute significantly to the phase noise and spur pattern in the output of a nonlinear fractional- $N$ frequency synthesizer. A type of time-varying spurs caused by a MASH DDSM divider controller,… read more here.
Keywords: divider; frequency synthesizer; inline formula; wandering spurs ... See more keywords
A 0.03- to 3.6-GHz Frequency Synthesizer With Self-Biased VCO and Quadrature-Input Quadrature-Output Frequency Divider
Sign Up to like & getrecommendations! Published in 2019 at "IEEE Transactions on Circuits and Systems II: Express Briefs"
DOI: 10.1109/tcsii.2019.2899506
Abstract: A 30 MHzâ3.6 GHz wideband frequency synthesizer with a self-biased oscillator and quadrature-input quadrature-output (QIQO) dividers for software-defined radio applications is presented in this brief. The self-biased oscillator employs a novel cross-coupled negative-Gm pair that… read more here.
Keywords: quadrature; ghz; self biased; frequency ... See more keywords
A 26GHz Fractional-N Digital Frequency Synthesizer Leveraging Noise Profiles of Three Functional Stages
Sign Up to like & getrecommendations! Published in 2021 at "IEEE Transactions on Circuits and Systems II: Express Briefs"
DOI: 10.1109/tcsii.2021.3094932
Abstract: This work presents a low-noise millimeter-wave fractional-N digital frequency synthesizer architecture. It is formed by cascading an injection-locked frequency multiplier, an open-loop digital frequency synthesizer and an integer-N LC digital phase-locked loop. Though the individual… read more here.
Keywords: digital frequency; frequency; noise; fractional digital ... See more keywords
CMOS Fractional-N Frequency Synthesizer for UHF RFID Reader Applications With Transformer-Based ISF Manipulation VCO
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Transactions on Circuits and Systems II: Express Briefs"
DOI: 10.1109/tcsii.2022.3186381
Abstract: This brief presents the CMOS fractional-N frequency synthesizer for UHF RFID reader applications. With stringent phase noise (PN) specifications for UHF RFID transceiver, our proposed synthesizer is designed to have a narrow loop bandwidth and… read more here.
Keywords: uhf rfid; cmos fractional; frequency; frequency synthesizer ... See more keywords
A Fast-Settling Frequency Synthesizer Using Statistical Frequency Measurement Method
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Transactions on Instrumentation and Measurement"
DOI: 10.1109/tim.2022.3196727
Abstract: This work presents a reconfigurable RF frequency synthesizer implemented with the field-programmable gate array (FPGA) and the digital-controlled oscillator (DCO) fabricated in a 0.18- $\mu \text{m}$ CMOS technology. The frequency synthesizer uses a fractional frequency… read more here.
Keywords: frequency; settling frequency; synthesizer; fast settling ... See more keywords
A 3.1â10.6-GHz 57-Bands CMOS Frequency Synthesizer for UWB-Based Cognitive Radios
Sign Up to like & getrecommendations! Published in 2018 at "IEEE Transactions on Microwave Theory and Techniques"
DOI: 10.1109/tmtt.2018.2852283
Abstract: An ultra-wideband (UWB)-based cognitive radio (CR) is a promising technique to utilize 3.1â10.6-GHz band efficiently for high data-rate short-range wireless connectivity even in overcrowdedness of the frequency spectrum. Frequency synthesizers tailored to the UWB-based CR… read more here.
Keywords: uwb based; range; frequency; based cognitive ... See more keywords