Materials

SpectrumX + Olin College: Introduction to Spectrum Coexistence Issues

Throughout the Fall of 2022, assistant professor of engineering Whitney Lohmeyer guided undergraduate students through her Introduction to Analog and Digital Communication course at Olin College of Engineering, connecting them to radio spectrum experts. Lohmeyer and her colleagues identified 12 different coexistence issues that have arisen among stakeholders, including those who work in radio astronomy and large non-geostationary (NGSO) constellations, and those who use the spectrum bands with radar altimeters and 5G technologies. She assigned a group of students to each of the 12 coexistence issues and used her connections within SpectrumX to support their research efforts.

The Uses of Radio Waves and Frequency Allocation

This lesson describes the extensive use of radio waves. Students will learn that radio frequencies have numerous applications, and require government regulation to prevent interference and unfair competition. In addition, students will have a chance to investigate their own questions regarding radio.

Simple Wireless Communication

Students will use their knowledge of the electromagnetic spectrum to build a spark gap transmitter. The device generates pulses of radio waves that are detected by an AM radio receiver.

Measuring Sea Surface Temperature with Satellites

Students will learn how satellites collect data and communicate that information with researchers on Earth. Students will use this data to create a thermal map using isotherms. Lastly, students will use the satellite data to determine changes in sea surface temperature.

Marine Animal Tracking and Bathymetry

Students will use their knowledge of seafloor features to learn about the movements of marine organisms (e.g. sharks). They will gain an understanding of how marine animals are tagged and tracked with satellite technology as well as gain insight regarding the pros and cons of learning about animal behavior.

Local Wireless Communication

The students will learn about the fundamentals of the electromagnetic spectrum. Radio frequency will be emphasized, especially its usage in science, astronomy, wireless communication and modern applications. Finally, the RTL-SDR dongle will be presented to the students. This device will be used to identify local radio broadcasters.

Is Radio Wave Technology Safe?

Students will investigate and discuss the health effects of radio frequencies. Then they will present their argument in an eye-catching presentation.

Investigating the Internet Connection

Students will use their knowledge of radio frequencies to design and carry out an investigation of Wi-Fi strength around the school. The data will be analyzed and presented to school staff in an effort to improve connectivity.

How to Design Your Own Crystal Radio

Students will research how a radio sends and receives AM and FM signals. Students will then design and construct a crystal radio. Finally, students will demonstrate their knowledge of how a radio works using electromagnetic radiation by creating a presentation, flier, or poster to showcase their expertise.

How Radio Waves Changed the World

Students will choose a radio wave application that they would like to research and compile the most pertinent information to present and share with the class about the uses and applications of radio waves. Students will work in teams of 2-4 people to research, create, and design the best digital and oral presentation.