Balanced Sub-1-V MOSFET Colpitts-VCO with Varactor-Integrated Feedback Capacitors
نویسندگان
چکیده
This study integrates a MOS varactor into one of feedback capacitors in the half circuit of a balanced Colpitts VCO. This leads to significant increase of the negative resistance of the balanced Colpitts VCO, thereby ensuring stable start-up of oscillation even at the sub-1-V supply voltage and causing further signal swing in the tank.
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