What is RF?

Published at : 23 Dec 2025

This video provides a non-technical introduction to RF (radio frequency) technologies and applications as well as an overview of RF test and measurement.
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Timeline:
00:00 Introduction
00:19 Currents (AC vs. DC) and frequencies (Hz)
1:20 From AC to RF, definition of RF
2:32 Uses of RF
3:42 Heating objects with RF
4:41 RF safety
5:45 Sensing with RF
6:30 Transferring information with RF
7:40 About frequencies and frequency licensing
9:19 RF test and measurement
9:53 What is spectrum?
11:00 What does a spectrum analyzer do?
11:54 What is a signal generator?
12:35 Using instruments together
12:57 What is a network?
13:46 What is a network analyzer?
14:32 What is a power sensor?
15:06 Conducted versus OTA (over the air)
15:55 Other RF test and measurement instruments
17:17 Summary