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4.1 GHz Low-Phase Noise Differential XCP LC-VCO with High Q and LC Noise Filtering

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Evolving Technologies for Computing, Communication and Smart World

Abstract

This paper represents a differential cross-coupled pair (XCP) tuned tank LC voltage-controlled oscillator with optimum noise filtering for low voltage and low-phase noise which can further be utilized in the efficient implementation of phase-locked loop (PLL). The proposed design is characterized under source coupled VCO, wherein a LC filtering method is applied to tail current source to improve phase noise. The design is implemented on 90 nm technology with a supply voltage of 1.4 V and power consumption of 50.08 uW. The novel design has been employed by tuning control voltage in the range of 1.5–1.8 V as this range shows the best linear characteristics. A phase noise of −154.3 dBc/Hz at 1 MHz offset frequency with the tuning range of 5.25–4.0 GHz has been validated for proposed VCO.

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Correspondence to Akshay Kamboj .

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Kamboj, A., Bharti, M., Sharma, A. (2021). 4.1 GHz Low-Phase Noise Differential XCP LC-VCO with High Q and LC Noise Filtering. In: Singh, P.K., Noor, A., Kolekar, M.H., Tanwar, S., Bhatnagar, R.K., Khanna, S. (eds) Evolving Technologies for Computing, Communication and Smart World. Lecture Notes in Electrical Engineering, vol 694. Springer, Singapore. https://doi.org/10.1007/978-981-15-7804-5_18

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  • DOI: https://doi.org/10.1007/978-981-15-7804-5_18

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  • Online ISBN: 978-981-15-7804-5

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