Fully differential 5 to 6 GHz low noise amplifier using SiGe HBT technology

The application of low-cost packages for 5 GHz devices mainly determines the performance. A report is presented on a fully differential SiGe HBT low noise amplifier, which helps to overcome the package limitation. The realised amplifier exhibits a power gain in excess of 15 dB and a minimum noise figure of less than 2.5 dB while drawing 36 mW from a single 3 V supply.