The purpose of the Spring 2000 ECE 4040 class is to research, design, and
implement a model vehicle that operates on its own through on-board components. One
of the components that is vital to the vehicle’s operation is a 2.4 GHz transmitter/receiver
link. It is through this link that the vehicle is to send and receive information. The 2.4
GHz transmitter/receiver link is the focus of this paper. In this section, a summary of the
information that is known at the onset of this project is presented.
Michael Kleppinger and Robert Barrington of the Fall 1999 ECE 4040 class
began the research and design of a general purpose 2.4 GHz radio frequency
transmitter/receiver system operating in the ISM band. Federal Communication
Commission (FCC) regulations, intermediate frequency (IF), and a system overview of
the general purpose 2.4 GHz transmitter/receiver are the main areas examined that pertain
to the aspect of this project.
From the previous semester, FCC regulations and standards information are
known since the frequency of the transmitter/receiver is still to be 2.4 GHz. Part 15 of
the FCC for Legal Unlicensed Transmitting on the ISM Band dictates the utilization of
the 2400 – 2483.5 MHz band. As stated by FCC regulations, the maximum field strength
of the fundamental frequency is 50 mV/m. This maximum field strength limit is used to
determine the amount of power output required.
Another detail that is gained from last semester is the IF that might be needed for
this phase of the project. Based on the complete system from last semester, an IF of 210
MHz was determined. While, at this early stage of the project, it is too premature to