Parametric Study On Matching Network At LNA 6GHz

Nurshimaa, Azizan (2015) Parametric Study On Matching Network At LNA 6GHz. Project Report. UTeM, Melaka, Malaysia. (Submitted)

Text (24 pages) Parametric Study On Matching Network At LNA 6GHz 24 Pages.pdf - Submitted Version Download (440kB)

Abstract

Wideband amplifier design remains one of the most challenging portions in the communication system. The conventional low noise amplifier operates on a single band, in which it is simpler to plan the enhancer to meet the whole indicated objective. Conventional routines for tuning and tweaking will require more repetitive and long time to cover the wider frequency range, accordingly rendering the method to be impractical. Therefore, a more particular specialized methodology must be used to help the designer to better design the amplifier. This paper represents the amplifier requirements in wideband application and proposed a structured practical design approach which uses the feedback topology by utilizing Advanced Design System (ADS) simulations in optimizing the amplifier to meet all the obliged specs. The purpose of the amplifier is to amplify the received RF path. The design methodology required the analysis of the transistor stability and proper matching network selection. The design of an LNA in Radio Frequency (RF) circuits requires the trade-off of many importance characteristics such as gain, noise figure (NF), stability. This situation forces designers to make choices in the design of RF circuits. This was the main reason why the ATF54143 from Avago Technologies was chosen over others due to the simplest configuration it offers for an amplifier design. Several measurement techniques using design tool Advanced Design System (ADS) for simulations where the noise circles and available gain circles are the tools that give the most guidance on the design tradeoffs, while FR4 strip board is used for fabrication purposed and the Network Analyzer for the practical testing of the amplifier were used to verify the performance of the designed amplifier.

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