Low Phase Noise Wide Tuning Range N-Push Cyclic-Coupled Ring Oscillators

Abdul-Latif, Mohammed; Sánchez-Sinencio, E.

doi:10.1109/jssc.2012.2188564

Cited by 50 publications

(36 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The measured VCO performance is summarized and compared with the published works in Table 1. Since the output frequency, tuning range, power consumption are different, it is more accurate to compare the [14], which are given by:…”

Section: Resultsmentioning

confidence: 99%

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

Luo

Yebing

et al. 2015

Microelectronics Journal

View full text Add to dashboard Cite

Section: Resultsmentioning

confidence: 99%

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

Luo

Yebing

et al. 2015

Microelectronics Journal

View full text Add to dashboard Cite

“…An example of reciprocal mixing is shown in Fig. 1 For wide tuning and low phase noise purposes in cognitive radio applications, three prominent types of oscillators have been heavily targeted in the recent literature, ring [6][7][8][9][10][11][12][13], active inductor-based [14][15][16][17], and LC [18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35] oscillators.…”

Section: Motivationmentioning

confidence: 99%

“…This is the main reason for their poor phase noise performance [6,7]. Yet, because of their very compact on-chip area and their wide tuning capabilities in comparison to LC oscillators, ring oscillators have gained a lot of attention in the recent literature [7][8][9][10][11]. In [8], a ring oscillator that is able to tune from 1 to 9 GHz is implemented using low power differential delay cells that consume about 3.7 mW per cell.…”

Section: Ring Oscillatorsmentioning

confidence: 99%

“…Nevertheless, its phase noise is about 20 dB more than an average LC-oscillator. An interesting approach that has achieved good results in terms of an extended tuning range is the push-push scheme [9], which has been extended to triple push [9,10] and multi-push [10,11]. In this approach, the outputs of different ring oscillators or different stages of the same ring oscillator are added to each other such that the odd (or even) harmonics cancel out and the even (or odd) harmonics add up [9].…”

Section: Ring Oscillatorsmentioning

confidence: 99%

“…In [11], multi-push scheme and cyclic coupling of oscillators have been combined to achieve an oscillator with a tuning range of 3.16 to 12.6 GHz and a relatively improved phase noise performance (about 10 dB less than an LC oscillator). Yet, power consumption is said to reach 200 mW which is much higher than the few tens of milliwatts commonly consumed by an LC oscillator in the same frequency range.…”

Section: Ring Oscillatorsmentioning

confidence: 99%

See 2 more Smart Citations

Methods and techniques for improving the figure of merit for wide tuning range quadrature voltage controlled oscillators

Gouhary

View full text Add to dashboard Cite

In addition, I would like to thank my friend at Iowa State University, Sara Harris, the department secretary, who was always there for me and all the VLSI graduate students for being such wonderful and helpful friends.Last but not least, I would like to thank my husband and my two beautiful daughters for their love and support.x ABSTRACT Next generation wireless devices will be required to support a wide variety of commercial standards and operate over a wide range of frequency bands. Two examples that are already receiving a lot of attention are software-defined and cognitive radios. Therefore, components that are capable of operating over ultra-wide frequency ranges are required.Quadrature oscillators are a major component in any communication system. They are often

show abstract

Investigation of injection‐locked ring oscillators for process, voltage, and temperature‐aware low phase‐noise reference clock generation

Larijani

Jalali

2022

Circuit Theory & Apps

View full text Add to dashboard Cite

In this paper, injection‐locked coupled ring oscillators (ROs) are studied regarding their capabilities for process, voltage, and temperature (PVT) compensated reference clock generation. A PVT resilient RO is implemented by means of injection‐locked coupled ROs where the injection locking mechanism is realized by employing adjustable coupling factors. It is shown that the oscillation frequency can be highly compensated for temperature‐related variations through the coupling factors. In addition, it is possible to compensate the center oscillation frequency for process‐induced variations and supply voltage fluctuations. The proposed technique is fully open loop without any frequency tracking loop and can be easily adopted by other architectures of oscillators such as RC and LC counterparts. A 2.4 GHz reference clock generator is implemented in a 0.18 μm standard CMOS process. While the temperature coefficient (TC) of the free‐running ROs is about 640 ppm/°C, the coupled structure offers a TC of 80 ppm/°C. Furthermore, the phase‐noise of the coupled structure is about 4 dB lower compared with the free‐running ROs. The proposed RO consumes about 2.8 mW and occupies a silicon area of 0.09 mm2.

show abstract

Low Phase Noise Wide Tuning Range N-Push Cyclic-Coupled Ring Oscillators

Cited by 50 publications

References 24 publications

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

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

Methods and techniques for improving the figure of merit for wide tuning range quadrature voltage controlled oscillators

Investigation of injection‐locked ring oscillators for process, voltage, and temperature‐aware low phase‐noise reference clock generation

Contact Info

Product

Resources

About