COM4LAB Course 365: RxTx 1 - Analogue Transmission Techniques AM, FM and PSK

The COM4LAB courses in transmission and reception technology explain the structure of classic and modern radio systems and the modulation of signals step by step. The properties of the signals are analysed in more detail in the time and frequency domains. For this purpose, there is a transmitter and a receiver system on the board in which all components can be analysed individually.

This course Analogue Transmission Techniques AM, FM and PSK covers the superheterodyne architecture and the basic analogue modulations AM, FM and PSK.

The course covers the following topics:

• How mixers work in communications engineering (local oscillator-mixer-filter structures),
• Characteristics of single-side and double-sideband signals, high-side and low-side mixers, etc.,
• The function of amplifiers and filters,
• Functionality of a spectrum analyser (sweep mode),
• Comparison and analysis of modulations, such as amplitude modulation, frequency modulation, phase modulation,
• Transmission of analogue audio signals and digital signals,
• Recovery of the carrier frequency.

The course …

• can be displayed and filled out on your own tablet/smartphone/laptop.
• is platform-independent - a current browser is sufficient.
• can be distributed to students via QR codes.
• enables interactive experimenting: The measured values from the Master Unit are automatically made available for evaluation in tables and diagrams. The analysis and documentation of the experiment on the student device can be done at school or at home.
• can be edited and thus adapted to your own lesson plan.