DTV 튜너 응용을 위한 광대역 저잡음 CMOS VCO 설계 = Design of a Wide-Band, Low-Noise CMOS VCO for DTV Tuner Applications

다국어 초록 (Multilingual Abstract)

Since the digital TV signal band is very wide (54~806㎒), the VCO used in the frequency synthesizer must also have a wide frequency tuning range. Multiple LC VCOs have been used to cover such wide frequency band. However, the chip area increases due to the increased number of integrated inductors. In this paper, a scheme is proposed to cover the full band using only one VCO. The RF VCO block designed using a 0.18㎛ CMOS process consists of a wideband LC VCO, five divide-by-2 circuits and several buffers. The simulation results show that the designed circuit has a phase noise at 10㎑ better than -87㏈c/㎐ throughout the signal band and consumes 10㎃ from a 1.8V supply.