Wideband VCO with triple tuned circuits in C-Ku band

Tsuru, Masaomi; Kawakami, Kenji; Tajima, Kazuo; Miyamoto, Koji; Nakane, M.; Miyazaki, Moriyasu; Takagi, Tadashi

doi:10.1109/mwsym.2005.1517038

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Cited by 6 publications

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“…Ring-oscillator type VCOs having wide tuning range, often suffer from high phase noise and high power consumption [1][2]. Binary-weighted capacitor bank or varactor tuned LC oscillators have lower phase noise but still limited tuning range [3][4][5]. It is also costly in terms of power consumption, chip area and interferences to use multiple LC VCOs to cover a large frequency range.…”

Section: Introductionmentioning

confidence: 99%

A low power wide tuning range VCO with coupled LC tanks

Mou

Yeo

et al. 2011

2011 IEEE International SOC Conference

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A 12GHz VCO fabricated in a 0.18µm SiGe BiCMOS technology with only CMOS devices, is presented. To improve tuning range and phase noise, a technique using strongly magnetic coupled LC tanks with fixed and tunable capacitive elements is proposed. The VCO achieves wide tuning range of 4.3GHz (36%) with only 4.5mW power consumption. The proposed VCO including buffer stage occupies a chip area of 0.17mm 2 , and can be easily integrated on-chip with other blocks.

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