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E-learning systems are used to facilitate learning processes through Internet, computer and communication technology. E-learning is very useful especially in distance learning. However, the statistics of unusable systems are high which means users are unable to operate the system. Fancy Web sites which are loaded with too many features and graphics make them even harder to use. Factors such as user's...
A single-ended wideband low noise amplifier (LNA) for GSM (DCS1800, PCS1900) and WCDMA (Band I to IV) were designed and implemented using 0.18 mum CMOS technology. The circuit topology is based on inductively-degenerated common-source (IDCS) using on-chip inductors at the input circuit for input matching and shunt-peaking components for bandwidth enhancement at load tank. Post layout simulation results...
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