Design of low phase noise and low power modified current-reused VCOs for 10 GHz applications

Hsu, Meng‐Ting; Li, Wei-Jhih; Chiu, Chien-Ta

doi:10.1016/j.mejo.2012.10.004

Cited by 15 publications

(5 citation statements)

References 8 publications

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“…The output power of a fully-fledged VCO from APITech [35] ranges from 7 -10 dBm minimum. These VCOs typically include amplifiers and buffer circuitry, increasing output power [36].…”

Section: Output Powermentioning

confidence: 99%

“…The tuning voltage gain is determined by the ratio of frequency to voltage. Reducing this would entail increasing the supply voltage, as shown by Hsu et al [35], where an increase of power dissipation from 3 mW to 5 mW yields a phase-noise improvement of approximately 85 dBc/Hz. Replacement of the current mirror with a full cascode output stage, as implemented by [13], will reduce the amount of noise coupled into the output.…”

Section: Output Powermentioning

confidence: 99%

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Design of an Active-Loaded Differential Voltage-Controlled Oscillator (VCO) Using Double-Gate MOSFET

Pillay,

M. Srivastava

2023

IJETT

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A differential cross-coupled Voltage Controlled Oscillator (VCO) has been designed using the Double-Gate (DG) MOSFET for VHF applications. The DG MOSFET exhibits superior noise immunity with its high noise figure and is suitable for low-power, high-frequency applications. The proposed VCO has been designed using a differential topology with improved power consumption, design flexibility, and noise reduction. This also improves the high-frequency performance of existing differential amplifiers. Thereafter, the proposed VCO was compared with fabrication and design methods, particularly Silicon-based CMOS and Single-Gate (SG) MOSFET VCOs, as possible alternatives. Various printed circuit board (PCB) design practices were followed to minimise the noise and improve the overall efficiency of the circuitry. Key parameters for the analysis of this VCO are the output power, phase noise, and figure of merit, which have been realised as -2.91 dBm at peak and -69.79 dBc/Hz at 1 MHz, respectively. The power consumption of the designed VCO is 36 mW.

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“…The output power of a fully-fledged VCO from APITech [35] ranges from 7 -10 dBm minimum. These VCOs typically include amplifiers and buffer circuitry, increasing output power [36].…”

Section: Output Powermentioning

confidence: 99%

Section: Output Powermentioning

confidence: 99%

Design of an Active-Loaded Differential Voltage-Controlled Oscillator (VCO) Using Double-Gate MOSFET

Pillay,

M. Srivastava

2023

IJETT

View full text Add to dashboard Cite

show abstract

“…Nevertheless, this technique suffers from imbalance of differential outputs voltage swing in terms of amplitude and phase. These asymmetries, caused by the difference of transconductances and parasitic capacitances of PMOS and NMOS transistors [6][7], resulting on power level mismatch of the differential output ports.…”

Section: Circuits Descriptionmentioning

confidence: 99%

RF CMOS Oscillators Design for autonomous Connected Objects

2019

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Voltage controlled oscillator (VCO) is an integral part of IoT wireless transceiver components. In this paper, VCOs operating around 2.4 GHz have been designed in CMOS technology. The relation between their components and specifications is studied for their performance optimization. Ultra-low power, less than 270 µW, has been obtained, while performing a frequency tuning range of about 10% between 2.1 and 2.4 GHz. Investigations on phase noise performance have been also achieved.

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“…For the circuit level, two main techniques have been presented: reducing the supply voltage and using the current-reuse techniques. This later suffers from asymmetrical outputs in terms of amplitude and phase [6][7][8]. The first technique requires the use of subthreshold MOS devices which present some drawbacks such as high sensitivity to PVT variations [9,10].…”

mentioning

confidence: 99%

Ultra-low-power wideband NMOS LC-VCO design for autonomous connected objects

Ghorbel

Haddad

Rahajandraibe

et al. 2020

Analog Integr Circ Sig Process

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In this paper, a fully integrated subthreshold LC voltage controlled oscillator (VCO) is presented. A design methodology is also proposed to find the optimal parameters lowering the power consumption. This methodology has been applied to design oscillators for different frequency bands. Furthermore, an adaptive body biasing technique has been used to improve the startup constrains and allows a high immunity to PVT (process, voltage and temperature) variations. A VCO operating in 5 GHz ISM (Industrial, Scientific and Medical) band has been realized with the proposed methodology in 0.13μm CMOS. It consumes only 468 μW from 0.39V supply voltage. This makes it possible to meet the required specifications of autonomous connected objects and IoT applications. The measured oscillation frequency can be tuned from 5.14 GHz to 5.44 GHz. The obtained phase noise is approximately equal to -112 dBc/Hz in post-layout simulation (PLS) and -104.5 dBc/Hz in measure.

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Design of low phase noise and low power modified current-reused VCOs for 10 GHz applications

Cited by 15 publications

References 8 publications

Design of an Active-Loaded Differential Voltage-Controlled Oscillator (VCO) Using Double-Gate MOSFET

Design of an Active-Loaded Differential Voltage-Controlled Oscillator (VCO) Using Double-Gate MOSFET

RF CMOS Oscillators Design for autonomous Connected Objects

Ultra-low-power wideband NMOS LC-VCO design for autonomous connected objects

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