低功耗K-Band變壓器回授震盪器及應用於X-Band雷達頻率調制連續波産生器之研究

Abstract

笫2章—個K-Band以180奈米CMOS制程變壓器回饋振盪器，利用變壓器回饋可以令振幅提高,即使在低電位操作下。相比傳統架構，低功耗及低相位雜訊是可以同時得到。這電路功耗是6.7mW,相位雜訊是-103dBc/Hz@1MHz, 這電路是適合適用低功耗應用. 笫3章,ー個X-Band以180奈米CMOS制程FMCW産生器,利用小數型頻率合成器去輸出以線性調變三角波信號,利用特別地設計,功耗只是32mw相位雜訊是-86.5dBc/Hz@1MHz

In Chapter 2, a low power K-Band transformer-feedback VCO is designed in 180nm CMOS process. Utilizing transformer-feedback, large signal swings can be achieved. It also achieves low-phase and low power consumption at the same time. The power consumption is 6.7mW at 900mV supply voltage. The phase noise is -103dBc at 1 MHz offset.The result shows that the VCO is suitable for low power applications requiring high signal purity. In Chapter 3, a low power X-Band FMCW Radar synthesizer in 180-nm CMOS Technology. Utilizing a fractional-N synthesizer as the FMCW generator, the VCO is modulated across a range of 90MHz. The chip consumes 30mw with low power consumption divider chain. The measured output phase noise of the synthesizer is -86.5 dBc/Hz at 1 MHz offset.