Biography
Enrollment Date: 2009
Graduation Date：2012
Degree：M.S.
Defense Date：2012.05.24
Advisors：Chun Zhang Ziqiang Wang
Department：Institute of Microelectronics，Tsinghua University
Title of Dissertation/Thesis：Remote Power Switch Control System with Low Power and Research
on its Key Circurt
Abstract:
Energy is a necessary condition for the achievement of national sustainable development, the power and material basis of human life .Today, in the face of energy shortage, countries have formulated relevant policies to reduce energy waste. Traditional infrared remote control of household appliances, standby power consumption is relatively high with a lot of energy wasted. With the development of CMOS technology, the performance of radio transceiver chip has been greatly improved with cheaper price and smaller area, making wireless technology to be used in remote areas. In recent years, because of the characteristics of passive RFID technology that it can recover energy from the electromagnetic wave , it hasbecome the research focus of various country .It has the function of receiving, and therefore it can be used in remote areas. Infrared remote control technology
has inherent physical defects such as small operating range, being not able to penetrate the obstacles and so on,as well as the development of intelligent home, alsopromoted the development of wireless remote control technology. Wireless remote control technology has a series of advantages such as a far distance, strong anti-interference, large receiving range, without the influence of obstacles and so on, and it will have great application prospects. In order to reduce the standby power consumption of the infrared remote control of household appliances, two methods are adopted in the thesis to reduce the standby power with wireless remote control technology, which proceed from controlling the power switch of household appliances ——micro-power remote control power switch system based on the CC2530 chip and zero static power remote control power switch system based on passive RFID technology. The thesis described the structure and working principle of various programs in detail and gave the test results. The test results showed that the power consumption of the receiver in the micro-power remote control power switch system is less than 300μW,
which greatly reduced the standby power consumption of household appliances; the baseband of the transmitter chip in zero static power remote control power switch system had problems. Although the receiver chip in it can work normally, the system needs to be improved. In wireless communication systems, the carrier wave generating circuit (usually using a frequency synthesizer) is a key circuit of the transceiver , its performance will directly affect the performance of the transceiver. The thesis also conducted in-depth study on frequency synthesizer of the transmitter chip in zero static power remote control power switch system. On the one hand, on the basis of the previous design, frequency locked loop circuit can improve; the other hand, all-digital phase locked loop（ADPLL） structure are used instead of the original frequency locked loop circuit, and ADPLL are modeled and simulated at the system level. In addition, the thesis researched and designed on the key module of ADPLL digital controlled oscillator ( DCO) in depth,and proposed a way to reduce the low-frequency phase noise of output frequency with bias current source with series resistance and achieved a DCO with output frequency from 860 ~ 960MHz.The phase noise of output frequency is -120dBc/Hz at1MHz offset frequency.And the core power of DCO is 1.8 V*0.63mA in 0.18μm Mixed-Mode CMOS technology.