Abstract :
Application of telecommunications technology to meet the needs of the
community is still constrained due to the condition of an area, not all
communications can cover remote areas. To reach these areas can be anticipated
using satellites, in satellite communication, there are sending and receiving sides.
In this Final Project design on the receiver side is the simulation of low noise
amplifier vsat c-band using the single stage amplifier method. This final project is
limited to designing a low noise amplifier with the results of the parameters of
reinforcement, noise figure and stability factor. Low noise amplifier is a device that
serves to amplify the RF signal received, the goal is that the signal can be received
well with a small noise value. In this design using ATF55143 IC as an active
component of its reinforcement. The choice of a transistor is because IC ATF55143
has a high linearity value, and has a small noise figure value. Making low noise
amplifier circuit using 2019 Advanced Design System (ADS) simulation software
that can display the gain value, noise figure and stability factor. From the
simulation results that use calculations have a value of reinforcement produced at
3.9 GHz working frequency of 18,440 dB, with noise figure values at 3.9 GHz
working frequency of 0.715 dB, and K-factor value of 1,001, while the results of
simulteneous conjugate match are able produces a gain at a working frequency of
3.9 of 18.474 dB with a noise figure of 0.715 dB and a K-factor value of 1.009. The
highest gain value is at a frequency of 3.9 GHz because the minimum S11 value is
at a frequency of 3.9 GHz, using the values of Zs and ZL obtained under
simulteneous conjugate match conditions produce a gain value of greater than
0.034 dB than using the calculation method.
Keywords : Low noise amplifier, Gain, Noise fiugre, K-factor