Design & Analysis of Low Power VCO for VLSI & Communication System

The explosive growth in portable systems, laptops and cellular networks has intensified the research efforts in low-power microelectronics. This is because VLSI technology allows circuits with more and more functionality to be integrated in a single chip. Such rapid technology developments revolutionized digital electronics, thereby fuelling one of the fastest growing markets ever observed. This revolution has also benefitted communication devices as well, such as amplifiers, Voltage Control Oscillators (VCO), filters etc, although at a slower pace due to the many challenges in adapting to degrading device characteristics. The common performance parameter to be improvised is power requirement. In particular, the tough requirements imposed by cellular phone applications have been a key driver for VCO research. So VCO is still a challenging component for designers. In light of the above trends, the main goal of this work would be to identify successful measures for narrow band and wideband low-power, low-noise frequency synthesis.