Design and implement a 5.8 GHz low noise amplifier

Abstract

Low noise amplifiers are key components in the receiving end of nearly every communications system. The wanted input signal of these systems is usually very weak and the primary purpose of the LNA is consequently to amplify the signal while at the same time adding as little additional noise as possible.

The design of a LNA in Radio Frequency circuit requires many important parameters such as Gain, Noise Figure, stability, power consumption and complexity. This situation forces designers to make choices in the design of RF circuits.

With the objective to design, implement and verify the single stage LNA circuit with high gain and low noise using for frequency range of 5.3 GHz to 6.3 GHz. The design simulation process is done using the software named Advance Design Systems (ADS).

The target of LNA’s specification is: center frequency is 5.8 GHz, Gain ≥ 10 dB, noise figure  5 dB, S11 & S22  -13 dB. The LNA’s substrate is FR4 material.