Seita Onishi L&S Sciences
Development of Cryogenic Si-Ge Amplifier for L and X Bands
My project is to design, test and construct an electronic amplifier customized for data-taking in low temperature experiments (liquid helium cooled) at the Quantum Nanoelectronics Laboratory. Electrical signals from experiment samples are too weak to be measured directly, so this amplifier will make the signals stronger. For the transistor, the essential part of the amplifier, I will use a commercial Silicon-Germanium transistor, which is known for its low cost. Using computer simulations and testing of the amplifier characteristics, amplifiers for various experiments in the lab demanding different frequency ranges can be made (for example 5-6GHz, 1-3GHz). I will optimize the amplifier to work at cryogenic temperatures with minimum power dissipation and noise for maximum gain.