Study on Dual-Band Voltage Control Oscillator and High Performance Transformers

• Main Authors: Hung-Chi Chien, 簡宏吉
• Other Authors: Heng-Ming Hsu
• Format: Others
• Language: zh-TW
• Online Access: http://ndltd.ncl.edu.tw/handle/47382120020685551882

碩士 === 國立中興大學 === 電機工程學系所 === 95 === Implementation of passive devices and Voltage Control Oscillator (VCO) are addressed in this thesis. Firstly, the transformer performance including power transform, self-resonance frequency, quality factor, coupling factor and transformer efficiency are studied comprehensively. The planar and stack structures of on-chip transformers are compared in the thesis. Secondly, the 3-dimension transformers with different turns-ratio are designed to improve the coupling factor coefficient. Thirdly, using switch coil numbers of inductor to transform the different inductances. The metal resistance and high frequency characteristics are investigated in the work. The equivalent circuit model of all passive devices are proposed to explain the behavior of the measurement results. Finally, the VCO adopting switched inductor can achieve the dual band 2.4/5.2GHz oscillation operation is implemented by using the TSMC 0.18 um CMOS technology. Moreover, the Foundry 0.13um RFCMOS process is adopted to implement the passive devices. Passive devices are measured on wafer and VCO is measured on board.