A subthreshold low-power CMOS LC-VCO with high immunity to PVT variations
Sign Up to like & getrecommendations! Published in 2017 at "Analog Integrated Circuits and Signal Processing"
DOI: 10.1007/s10470-017-1047-7
Abstract: Internet of things is a topic of rising interest and intensive research, where power consumption is one of its most relevant challenges. This article presents a new radiofrequency subthreshold ultra low power LC voltage controlled… read more here.
Keywords: high immunity; cmos; power; low power ... See more keywords
Bandwidth-enhanced differential VCO and varactor-coupled quadrature VCO for mmWave applications
Sign Up to like & getrecommendations! Published in 2018 at "AEU - International Journal of Electronics and Communications"
DOI: 10.1016/j.aeue.2018.08.005
Abstract: Abstract This paper presents a bandwidth-enhanced differential LC-Voltage Controlled Oscillator (LC-VCO) and varactor-coupled Quadrature VCO (QVCO) designed and simulated in high-performance SiGe HBTs of the GlobalFoundries (GFs) 130 nm SiGe BiCMOS8HP process for mmWave applications. Using… read more here.
Keywords: enhanced differential; bandwidth enhanced; vco varactor; quadrature ... See more keywords
Low-power three-path inductor class-C VCO without any dynamic bias circuit
Sign Up to like & getrecommendations! Published in 2017 at "Electronics Letters"
DOI: 10.1049/el.2017.1845
Abstract: A 2.48 GHz class-C voltage controlled oscillator (VCO) without any dynamic back bias circuit is presented. The VCO uses three-path high Q-factor inductor as the low loss resonator and class-C cross-coupled nMOSFET pairs for high… read more here.
Keywords: three path; class; bias circuit; vco ... See more keywords
OTA-Free 1–1 MASH ADC Using Fully Passive Noise-Shaping SAR & VCO ADC
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Journal of Solid-State Circuits"
DOI: 10.1109/jssc.2021.3128489
Abstract: We present an OTA-free 1–1 multi-stage noise-shaping (MASH) analog-to-digital converter (ADC) utilizing a fully passive noise-shaping successive approximation register (NS-SAR) as the first stage and an open-loop ring voltage-controlled oscillator (VCO) as the second stage.… read more here.
Keywords: ota free; noise; adc; noise shaping ... See more keywords
A 96.9-dB-Resolution 109-μW Second-Order Robust Closed-Loop VCO-Based Sensor Interface for Multiplexed Single-Ended Resistance Readout in 180-nm CMOS
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Journal of Solid-State Circuits"
DOI: 10.1109/jssc.2022.3163284
Abstract: This article presents a highly digital robust voltage-controlled oscillator (VCO)-based front end for multiplexed single-ended resistive sensor readout applications. The architecture features a modified digital phase-locked loop (DPLL) structure that enables second-order noise shaping without… read more here.
Keywords: multiplexed single; vco; single ended; readout ... See more keywords
A Low-Phase-Noise Quad-Core Millimeter-Wave Fundamental VCO Using Circular Triple-Coupled Transformer in 65-nm CMOS
Sign Up to like & getrecommendations! Published in 2023 at "IEEE Journal of Solid-State Circuits"
DOI: 10.1109/jssc.2022.3196181
Abstract: The minimal achievable phase noise (PN) of millimeter-wave (mm-wave) voltage-controlled oscillators (VCOs) is bounded by the smallest realizable inductor with a reasonable high quality factor ( ${Q}$ ). A multi-core VCO reduces the total equivalent… read more here.
Keywords: vco; coupled transformer; tex math; inline formula ... See more keywords
A −192.7-dBc/Hz FoM $K_{U}$ -Band VCO Using a DGS Resonator With a High-Band Transmission Pole in 0.18- $\mu$ m CMOS Technology
Sign Up to like & getrecommendations! Published in 2019 at "IEEE Microwave and Wireless Components Letters"
DOI: 10.1109/lmwc.2019.2950525
Abstract: This letter presents the improvement of the phase noise (PN) of a voltage-controlled oscillator (VCO) by using a defected ground structure (DGS) resonator with a high-band transmission pole. The proposed DGS resonator has two loops… read more here.
Keywords: dgs resonator; band; vco; high band ... See more keywords
A 12GHz Transformer Feedback Class-F2,3 Voltage-Controlled Oscillator Using Noise Circulating with FoM of 190.5dBc/Hz
Sign Up to like & getrecommendations! Published in 2021 at "IEEE Microwave and Wireless Components Letters"
DOI: 10.1109/lmwc.2021.3091978
Abstract: A 12 GHz transformer feedback Class-F2,3 Voltage-Controlled Oscillator (VCO) using noise circulating is proposed in this paper. Transformer feedback is utilized in the proposed VCO to achieve Class-F2,3 resonant impedance control at the VCO output… read more here.
Keywords: transformer feedback; feedback; vco; noise ... See more keywords
A Temperature Compensated Triple-Path PLL With $K_{\mathrm {VCO}}$ Non-Linearity Desensitization Capable of Operating at 77 K
Sign Up to like & getrecommendations! Published in 2017 at "IEEE Transactions on Circuits and Systems I: Regular Papers"
DOI: 10.1109/tcsi.2017.2704023
Abstract: A novel triple-path PLL (TPPLL) is presented to compensate the VCO frequency drift caused by the large temperature variations meanwhile maintaining a stable bandwidth and good jitter performance. The proposed PLL architecture splits the VCO… read more here.
Keywords: path pll; temperature; mathrm vco; triple path ... See more keywords
An X-Band CMOS VCO Using Ultra-Wideband Dual Common-Mode Resonance Technique
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Transactions on Circuits and Systems I: Regular Papers"
DOI: 10.1109/tcsi.2022.3181139
Abstract: In this paper, the dual common-mode (CM) resonance technique is proposed for lowering the phase noise (PN) and flicker PN corner of LC voltage-controlled oscillators (VCOs) across wide tuning range. The dual CM resonator can… read more here.
Keywords: band; mode resonance; dual common; vco ... See more keywords
An 18.1 mW 50 MHz-BW 76.4 dB-SNDR CTSDM With PVT-Robust VCO Quantizer and Latency-Free Background-Calibrated DAC
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Transactions on Circuits and Systems I: Regular Papers"
DOI: 10.1109/tcsi.2022.3192465
Abstract: This paper presents a continuous-time sigma-delta modulator (CTSDM) with a voltage-controlled-oscillator-based (VCO-based) integrating quantizer. A background replica-based calibration technique is proposed to alleviate the impact of the process, voltage supply, and temperature (PVT) variations on… read more here.
Keywords: vco; ctsdm; free background; quantizer ... See more keywords