会议专题

Low Phase Noise Quadrature Voltage Controlled Oscillator For WiMaz Application

A quadrature voltage controlled oscillator (QVCO) with nested cross-coupled topology is presented. With this topology,the circuit operates at very low voltage,and achieves low phase noise with low power consumption. The nested cross-coupled topology employs two nMOS cross-couple pairs. The one with pMOS active loads and coupling transistors plays the major role. The other one,by enhancing the negative resistance,improves performances of QVCO. The prototype is implemented using TSMC 0.18-μm 1P6M Mixed Signal/RF process technology. With 0.8V power supply,the phase noise of the QVCO is-118.3 dBc/Hz at 1MHz offset frequency from the carrier frequency of 5.73GHZ. The figure of merit (FoM) is -185.3,total power consumption is 6.44mW,tuning range is 280MHz and I/Q are balanced.

Chin-Chun Lin Hwan-Mei Chen Chih-Chieh Yu Shih-Wei Chen

Department of Electronic Engineering,Lunghwa University of Science and Technolgy,Taoyuan 33306,Taiwan

国际会议

9th International Conference on Solid-State and Integrated-Circuit Technology(第9届固态和集成电路国际会议)

北京

英文

1609-1612

2008-10-20(万方平台首次上网日期,不代表论文的发表时间)