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A Δ∑-modulator-less digitally-controlled oscillator using fractional capacitors for GSM/EDGE transmitter | IEEE Conference Publication | IEEE Xplore

A Δ∑-modulator-less digitally-controlled oscillator using fractional capacitors for GSM/EDGE transmitter


Abstract:

A ΔΣ-modulator (DSM)-less digitally controlled oscillator (DCO) based on 65-nm CMOS technology, incorporating a fractional-capacitor and ground-shield techniques, for a G...Show More

Abstract:

A ΔΣ-modulator (DSM)-less digitally controlled oscillator (DCO) based on 65-nm CMOS technology, incorporating a fractional-capacitor and ground-shield techniques, for a GSM/EDGE transmitter was developed. The fractional-capacitor and ground-shield techniques, respectively, achieve high frequency resolution (0.6 kHz) without a conventional DSM and small differential non linearity (DNL) of DCO gains (0.12 LSB). A transmitter using the DCO exhibits both low phase error (0.9°) and in-specification receiver-band noise (<;-165 dBc/Hz) thanks to the high frequency resolution and small DNL.
Date of Conference: 17-21 September 2012
Date Added to IEEE Xplore: 10 November 2012
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Conference Location: Bordeaux, France

References

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