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Optimization-Based Design of RF-VCOs with Tapered Inductors

Optimization-Based Design of RF-VCOs with Tapered Inductors

Pedro Pereira, Fábio Passos, M. Helena Fino
Copyright: © 2015 |Pages: 24
ISBN13: 9781466666276|ISBN10: 1466666277|EISBN13: 9781466666283
DOI: 10.4018/978-1-4666-6627-6.ch006
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MLA

Pereira, Pedro, et al. "Optimization-Based Design of RF-VCOs with Tapered Inductors." Performance Optimization Techniques in Analog, Mixed-Signal, and Radio-Frequency Circuit Design, edited by Mourad Fakhfakh, et al., IGI Global, 2015, pp. 134-157. https://doi.org/10.4018/978-1-4666-6627-6.ch006

APA

Pereira, P., Passos, F., & Fino, M. H. (2015). Optimization-Based Design of RF-VCOs with Tapered Inductors. In M. Fakhfakh, E. Tlelo-Cuautle, & M. Fino (Eds.), Performance Optimization Techniques in Analog, Mixed-Signal, and Radio-Frequency Circuit Design (pp. 134-157). IGI Global. https://doi.org/10.4018/978-1-4666-6627-6.ch006

Chicago

Pereira, Pedro, Fábio Passos, and M. Helena Fino. "Optimization-Based Design of RF-VCOs with Tapered Inductors." In Performance Optimization Techniques in Analog, Mixed-Signal, and Radio-Frequency Circuit Design, edited by Mourad Fakhfakh, Esteban Tlelo-Cuautle, and Maria Helena Fino, 134-157. Hershey, PA: IGI Global, 2015. https://doi.org/10.4018/978-1-4666-6627-6.ch006

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Abstract

Voltage-Controlled Oscillators (VCOs) are widely used in wireless transceivers. Due to the stringent specifications regarding phase-noise, LC-VCOs are usually adopted. The need for maximizing phase-noise as well as minimizing the power consumption makes imperious the adoption of optimization-based design methodologies. For the optimization of the LC-VCO characteristics, special attention must be paid to the integrated inductor design, since its quality factor may have a strong influence in the LC-VCO phase-noise. Furthermore, designers must ensure that the higher limit of VCO operating frequency is sufficiently below the inductor resonant frequency. In this chapter, a study on the influence of the quality factor of the inductors on the LC-VCO overall behavior is presented. Then, optimization of integrated inductors by exploring the inductor geometric layout is presented. Finally, results obtained for the design of an LC-VCO in 130nm Technology using a previously optimized inductor are presented.

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