RF Building Blocks and Entertainment SoCs for Mobile Telecommunication Platforms

Tang, J. van der; Rumpt, H. van; Kasperkovitz, D.; Roermund, Arthur van

doi:10.1109/apcc.2005.1554097

Cited by 2 publications

(1 citation statement)

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“…3 is implemented with transistors g m L . When the base and collector of a bipolar transistor are shorted, this two terminal device becomes an active inductor for high frequencies [8]. The inductance can be varied by controlling the base rcsistance or by varying the current through the transistor.…”

Section: -2-2mentioning

confidence: 99%

A 9.8-11.5 GHz quadrature ring oscillator for optical receivers

Tang

Kasperkovitz

Roermund

Proceedings of the IEEE 2001 Custom Integrated Circuits Conference (Cat. No.01CH37169)

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A 9.8 -11.5 GHz quadrature ring oscillator for use in the data clock recovery circuit of optical receivers has been realized in a BiCMOS technology with 30 GHz cut-off frequency. The circuit implementation of the oscillator uses active inductors which provide isolation between the oscillator and cascaded circuits such as buffers and flip-flops. Carrier to noise ratios better than 94 dBc/Hz at 2 MHz offset are measured with 75 mW dissipation and 2.7 V supply voltage. The realized quadrature oscillator achieves a state of the art oscillation frequency over transistor cut-off frequency ratio of 0.38. IntroductionQuadrature (I/Q) oscillators are key building-blocks in advanced receiver architectures. In case of optical receivers, parallel architectures can be implemented which operate at half

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Section: -2-2mentioning

confidence: 99%