Power Amplifier Design For Ultra-Wideband Applications

Muhammad Syahir, Yosuf (2009) Power Amplifier Design For Ultra-Wideband Applications. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

Ever since the FCC allocated 7.5 GHz (from 3.1 GHz to 10.6 GHz) for ultra wideband (UWB) technology, interest has been renewed in both academic and industrial circles to exploit this vast spectrum for short range, high data rate wireless applications. The great potential of UWB lies in the fact that it can co-exist with the already licensed spectrum users and can still pave the way for a wide range of applications. However, this wide bandwidth complicates the circuit level implementation of key RF blocks like the power amplifier (PA), transmit/receive switch, low noise amplifier (LNA) and mixers in an UWB transceiver. The inability of Narrow-Band (NB) system likes Bluetooth to deal with some important topics in nowadays technology such as security, high data rate, signal loss, and range resolution makes UWB technology an important subject to be exploited and explored. The ultimate goal is to design a Power Amplifier which covers whole range of UWB frequency from 3.1 GHz to 10.6 GHz. The design will focus on Distributed Amplifier (DA) technique which is knowingly as an easy technique for Broadband Power Amplifier design to achieve high output power and flat high gain through the UWB frequency range. The design based on simulation using Microwave Office 2006 and the output gain is 12.8 dB ± 0.5 dB with single-stage PA circuit while the output gain with two stages PA circuit is 26 dB ± 2 dB.

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