A dual-band CMOS LC-VCO with highly linear frequency tuning characteristics

Luo, Yi; Ma, Can; Yebing, Gan; Qian, Min; Ye, Tianchun

doi:10.1016/j.mejo.2015.06.001

Cited by 14 publications

(2 citation statements)

References 14 publications

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“…The back gate methodology reduces the transistor threshold voltage; thus, the method is to have opted for the low voltage applications. The LC tank introduces the fine-tuning and coarsetuning methods [139]. The fine-tuning technique consists of two varactors: likewise, the coarse-tuning method consists capacitor array.…”

Section: B Pmos Cross-coupled Lc Oscillatormentioning

confidence: 99%

A Comparative Study of Ring VCO and LC-VCO: Design, Performance Analysis, and Future Trends

Sivaraaj,

Majeed

2023

IEEE Access

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Voltage-controlled Oscillator (VCO) is a prominent part that has been used to generate a stable frequency for the high-frequency transceiver system. This survey encompasses a comparative analysis of two commonly used VCO architectures: the Ring VCO and LC-VCO. The Ring VCO has been constructed with the collection of ring delay cells. Moreover, the LC-VCO utilizes inductors, capacitors, fine-tuning circuits, coarse-tuning circuits to generate frequency. Furthermore, this study investigates an in-depth exploration of VCO structures, operational principles, advantages, limitations, and performance metrics. In addition, it evaluates performance parameters, including operating frequency range, phase noise, figure of merit, and tuning techniques. This research suggests that based on the application and its requirements, the VCO performance parameters need to be varied. This survey employs diverse types of VCO, and its design methods. Implications for future research and study of VCO design and integration are discussed.

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Section: B Pmos Cross-coupled Lc Oscillatormentioning

confidence: 99%

A Comparative Study of Ring VCO and LC-VCO: Design, Performance Analysis, and Future Trends

Sivaraaj,

Majeed

2023

IEEE Access

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“…The switched inductor array, which greatly increased the chip's area is the most widely used for bandwidth extension. Many digital switches experience a variety of issues, which contribute to the complexity of tuning voltages as well as the risk of tuning range gaps [3][4][5]. However, a novel varactor [6] has been proposed to broaden the tuning range using a single varactor without the need for digital control signal tuning achieving a tuning range of 40.3%.…”

Section: Introductionmentioning

confidence: 99%

CMOS High Swing and Q Boosted Dual Core Voltage Controlled Oscillator for 5G New Radio Application

Shasidharan,

Rajendran,

Mariappan

et al. 2023

ACES Journal

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This paper describes a low power, low phase noise CMOS voltage controlled oscillator (VCO) with a cascoded cross-coupled pair (XCP) configuration for high data rate 5G New Radio (5G-NR) applications. The core consists of a primary auxiliary VCO built as a negative conductance circuit to improve phase noise and a secondary core with a cascoded formation to increase output voltage swing. A switched varactor array (SVA) wideband tuner is integrated for a wide bandwidth application in a low power implementation. The dual-core VCO was designed in CMOS 130 nm technology and occupies only 1.05 mm2 of space. With a supply voltage of 1.2 V, the VCO achieved a tuning range of 32.43% from 3.45 GHz to 4.47 GHz. At 3.96 GHz carrier center frequency with 1 MHz offset, the total power consumption is 0.7 mW with a corresponding phase noise (PN) of −121.25 dBc/Hz and a Figure of Merit (FoM) of 193.25 dBc/Hz. The results are validated using Cadence Spectra RF simulations.

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Tunable Frequency Oscillator

Kumar

2023

Nanodevices for Integrated Circuit Design

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A dual-band CMOS LC-VCO with highly linear frequency tuning characteristics

Cited by 14 publications

References 14 publications

A Comparative Study of Ring VCO and LC-VCO: Design, Performance Analysis, and Future Trends

A Comparative Study of Ring VCO and LC-VCO: Design, Performance Analysis, and Future Trends

CMOS High Swing and Q Boosted Dual Core Voltage Controlled Oscillator for 5G New Radio Application

Tunable Frequency Oscillator

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