WLAN Low Noise Amplifier Using HBT Technology

Azlina, Abdul Latip (2008) WLAN Low Noise Amplifier Using HBT Technology. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

Demand for WLAN system is increasing and keep improving with new technologies. One of the problems faced by WLAN system is noise caused by propagation through air, electron movement and interfacing signal that degrade the transceiver system performance. Then, this thesis presented a Low Noise Amplifier (LNA) design to overcome the weak receive signal pick up by antenna. This thesis shows the process done on the design simulation of Low Noise Amplifier with important characteristics such as gain, noise figure (NF), stability, power consumption and complexity. Advance Design System (ADS) is used to design and simulate the LNA circuit for 2.4GHz. Method that used in this design is single stage and BFP 640 NPN Silicon Germanium RF transistor by Infineon Technologies is choose due to the simplest configuration offered for an amplifier design. Then, the designed circuit is fabricated using FR4 board and to performance of the designed has been tested using Network Analyzer. The design has successfully minimized the noise figure and provides sufficient gain for WLAN transceiver system.

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