design of gate-driven quasi floating bulk ota-based gm–c filter for pll applications

The advancement in the integrated circuit design has developed the demand for low voltage portable analog devices in the market. this demand has increased the requirement of the lowpower rf transceiver. a lowpower phase lock loop (pll) is always desirable to fulfill the need for a low power rf transceiver. this paper deals with the designing of the low power transconductance capacitance (gmc) based loop filter with the help of the gatedriven quasi bloating bulk (gdqfb) mos technique. the gdqfb mosbased operational transconductance amplifier (ota) has been proposed with a high dc gain of 82.41 db and less power consumption of 188.72 µw. further, gmc based active filter has been designed with the help of the proposed gdqfb ota. the simulation results of gmc filter attain a -3 db cutoff frequency of 59.08 mhz and power consumption of 188.31 µw at the supply voltage of 1v. the proposed gmc filter is suitable for the designing of 1-3 ghz low power pll.