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In this paper, a power management circuit (PMC) for wireless powering capsule endoscopy is presented. The PMC includes a RF Limiter, a CMOS rectifier and a low dropout (LDO) regulator. A bandgap circuit used as reference for LDO is optimized carefully and has a more than −50 dB PSRR at 2 MHz, which can effectively suppress the ripple of rectifier output used as input voltage of LDO. A voltage controlled...
In this paper, we present the design of a low-power, high power supply rejection (PSR) voltage regulating circuit in a 0.35μm standard CMOS process. A CMOS full-wave bridge rectifier is designed to generate an unregulated DC voltage. A low dropout (LDO) series voltage regulator converts the unregulated voltage to a stable and clean DC supply voltage. A self-biased wide range and high power supply...
In this paper, we present the design of a low-power, high-power supply rejection ratio (PSRR) power regulator used in telemetry-powered bioimplantable microsystems in a 0.35μm standard CMOS process. The power regulator is comprised of a CMOS full-wave bridge rectifier, a wide-range and high PSRR voltage reference and a low drop out series voltage regulator. Simulation results show the proposed circuit...
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