Date of Defense

4-2003

Department

Electrical and Computer Engineering

First Advisor

Dr. Hossein Mousavinezhad

Second Advisor

Dr. Bradley Bazuin

Abstract

Flexible Electrical and Software Programmable Transceivers (FEAST) is a project aimed at advancing both research and educational opportunities in wireless communications. The development of high speed analog-to-digital and digital-to-analog converters has enabled the modulation/demodulation of communications signals via real-time data processing. These "software radios" will allow greater flexibility in the reception and transmission of wireless signals. The FEAST wireless transceiver is such a system consisting of analog RF signal down converters and upconverters, high speed analog-to-digital and digital-toanalog converters, hardware digital signal processing IC's and real time software signal processing.

Phase II of the project (FEASTII) project focuses is on the development of RF and analog components for radio transceivers and advancing the all-digital, "software radio" signal processing within the system. The focus detailed in this report has been upon designing the components to support the receiving end of the system.

Components designed during this phase of the project to support the analog RF downconverting receiver chain were: 1) Two sets of monopole antennas, i.e. a set for reception and a set for transmission, centered at 133MHz and 915MHz. 2) A preselector, which is a bandpass filter specifically designed for the front end of the receiver chain, centered at 133MHz. 3) A frequency synthesizer with a tunable range of 110-160MHz and 1MHz tuning steps.

Digital signal processing with direct memory access also helps maintain real time operation of the system as signal complexity increases. The use of Texas Instruments '6701 DSP and Code Composer Studio enable rapid application development necessary for the tight time frame of undergraduate capstone projects.

This phase of the FEAST project was successful in its advancement toward the goal of expanded research and educational opportunities in wireless communications at Western Michigan University.

Access Setting

Honors Thesis-Open Access

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