Design Of Integrated Low-Noise Amplifier And Filter For Wireless Communication Application

Quee, Yu Leong (2015) Design Of Integrated Low-Noise Amplifier And Filter For Wireless Communication Application. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

Nowadays, wideband communication systems have attracted a great deal of interest due to their wide bandwidth, viability to support high data rate capacity at low power for high-speed wireless communication. However, there are many challenging requirements are faced by the wideband communication systems. The design of low-noise amplifier which operates from 1.7 GHz to 2.7 GHz is difficult to design to operate in the wide spectrum and maintaining a noise figure < 1 dB, better input and output return loss < -10 dB and greater gain > 10 dB, thus shows a harder challenge for the designer to meet the goals for the wider frequency range. A notch filter/narrow-band bandstop filter which operate at 1.85 GHz to 1.99 GHz stopband frequency range is designed to eliminate the interference between the cellular band at 1.9 GHz and ISM band at 2.4 GHz. The thesis work presented here is the study and design of integrated low-noise amplifier and notch filter into one circuit for a wider frequency range 1.7 GHz to 2.7 GHz to explore the gain and noise figure improvement. The GaAs E-pHENT transistor based LNA and notch filter with lumped components are designed and simulated to test the gain, noise figure improvement, input and output return loss by using the Advanced Design System (ADS) software. After that design of integrated low-noise amplifier and notch filter and simulated to test again. Furthermore, the results from the simulations are analyzed and discussed. This type of design can be used by mobile phone, wireless LAN, Bluetooth device.

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