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구광회(Kwang-Hoe Koo),채규성(Kyu-Sung Chae),윤상웅(Sang-Woong Yoon),김창우(Chang-Woo Kim) 대한전자공학회 2007 대한전자공학회 학술대회 Vol.2007 No.11
A quadrature voltage controlled oscillator(QVCO) with MOS-varactors has been designed for X-band applications. The QVCO consists of two cross -coupled differential cores. Using the TSMC CMOS libraries. harmonic balance simulation has been performed with the Agilent’s ADS. The QVCO exhibits the frequency tuning range from 7.03 ㎓ to 10.25 ㎓ with phase noise from -95 ㏈c/㎐ to -105 ㏈c/㎐ at an 1 ㎒-offset frequency. The total bias current is 49.6 ㎃ including four buffer amplifiers.