| Summary: | 碩士 === 國立臺北科技大學 === 電機工程研究所 === 105 === This thesis proposes a low power low-dropout regulators for radio frequency harvesting system. The LDO is composed of the bias circuit, error amplifier, voltage reference circuit, diode-type MOS feedback network, frequency compensation circuit and power transistor. B ecause that the low energy is injected from antenna, the low power LDO is in need to receive the small radio frequency energy. After passsing the received RF energy through the rectifier, the battery can be replace with the LDO. To have a stable energy transmission, the LDO needs to design with low power and small power consumption. The destination is to obtain a stable power supply with charging control circuit.
The designed chip is fabricated in TSMC 0.18 µm 1P6M complementary gold-oxygen mixed-signal process. The designed low power low dropout linear regulator contains the reference voltage .The simulated results show that the input voltage of the LDO varies from 1.7 to 2.0 V. Two output voltags are 1.5 V and 1.4 V. The maximum load current is 30 µA, the line regulation is 33 mV/V, the load regulation is 0.0062 mV/5μA. In view of the reference voltage of LDO, the output voltage is 0.5 V and the quiescent current is 34 nA. In summary, the quiescent current, consumption power, and power efficiency are 318 nA, 6.55 uW, and 87.29 %, respectively, for the LDO circuit.
|
|---|
