Tunable S-band RF Front End Receiver for LEO Mission

This paper presents the design strategy, simulation results and final schematic of Radiofrequency front end (receiver) block level designing with a flexible centre frequency for S-band (2025-2110MHz). The idea behind this is basically a planning for communication such as data, voice and video communication. In this study, with a Radio-frequency (different channel frequencies) the required specifications were achieved such as gain < 130 dB, noise figure 2dB, bandwidth 6 MHz which is targeted for LEO mission. This design is having very low noise figure, high gain and low spurious levels and RF-Front end circuit includes low noise amplifier, filter, mixer and local oscillator. To obtain proper output frequency and determination of a system performance, the measured data including gain, noise figure and S parameter agree well with the simulation results on ADS Software.