论文信息 - Digitally controlled oscillator in a 65nm GSM/EDGE transceiver with built-in compensation for capacitor mismatches

Digitally controlled oscillator in a 65nm GSM/EDGE transceiver with built-in compensation for capacitor mismatches

A digitally-controlled oscillator (DCO) with a fully-digital compensation mechanism for mismatches in its frequency-tuning capacitor array is proposed. It addresses the inevitable mismatch between the smallest frequency step supported by the integer portion of the frequency-tuning array and the dithering-based fractional portion. Such mismatch results in modulation distortion during transmission and in potential violation of the transmitter's modulation accuracy specifications. The presented solution, which is built-in and relies solely on digital logic and software, is implemented in a 65nm CMOS GSM/EDGE Digital RF Processor (DRP)-based transceiver.

Oren Eliezer | Bogdan Staszewski | Sudheer Vemulapalli

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