Development On 5GHz Negative Feedback Low Noise Amplifier

Nur Ain Farhana, Abd. Latiff (2015) Development On 5GHz Negative Feedback Low Noise Amplifier. Project Report. UTeM, Melaka, Malaysia. (Submitted)

Text (24 pages) Development On 5GHz Negative Feedback Low Noise Amplifier 24 Pages.pdf - Submitted Version Download (1MB)

Abstract

This project designs low noise amplifier (LNA) using negative feedback techniques for 5GHz. The LNA front end receiver is designed to operate at given frequency. The design process involved the use of design software’s such as Advanced Design System (ADS) 2011. This project will use transistor from Avago Technologies (ATF-54143). Furthermore, this project presents the design of single stub elements at the input and output for impedance matching. This project also will analyse the performance of one stage and three stage of negative feedback low noise amplifier. To detect a weak signal, the receiving system must maintain a noise level that is lower than received signal. When using a low noise amplifier, noise is reducing by the gain by the amplifier while the noise of the amplifier is injected directly into the received signal. In this project, the design of microwave transistor amplifiers using the small signal S-parameters was studied to develop the LNA. S-parameter is a valuable aid both for collecting data for a transistor and them using data to predict the performance and design an amplifier circuit. The smith chart is an easy and practical tool used to designing matching circuits meanwhile the micro-strip line can perform the impedance conjugate matching. All the active component that use in this LNA is surface mount device (SMD) where it small in size and low cost. Finally, the hardware of this product was very compatible.

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