Design and construction of a Low-Noise L-Band Amplifier for the Tulancingo I radio Telescope

Abstract

The total noise produced by a microwave receiver is dominated by the low-noise amplifier (LNA), which is usually the first active device in the receiver detection chain. The LNA is coupled as closely as possible to the feedhorn antenna and should have as low a noise figure as possible. In this work, we present the design and construction of a LNA to be implemented in an L-band receiver to be installed on the Tulancingo I antenna as a part of its conversion to an astronomical radio telescope. The LNA bandwidth is from 1.4 to 1.8 GHz, with 26 dB gain and 50 K noise temperature.