Highly Efficient Class-E Power Oscillator with Tunable amplitude and Phase

• Main Authors: Po-Chun Chang, 張博鈞
• Other Authors: Tzyy-Sheng Horng
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/59483191364482727797

碩士 === 國立中山大學 === 電機工程學系研究所 === 101 === Since the development of wireless communication system goes toward low power and high energy efficiency, design of wireless transmitter integrated circuits (ICs) becomes more challenging. This research focuses on IC designs for efficient power amplification applications in short-range constant-envelope modulation systems. To achieve high gain and high efficiency with low power consumption, this research aims at an injection-locked transmitter with highly efficient CMOS oscillators. The thesis consists of two main parts. Firstly, a transformer-feedback CMOS oscillator is designed as a drive amplifier based on injection locking. Secondly, a transformer-feedback CMOS power oscillator is designed using class-E theory to possess two main functions. One is to tune the oscillation amplitude by changing the supply voltage. The other is to tune the oscillation phase by varying the tuning voltage.