A field guide to RF engineering
Signals carry information. Fields carry energy. Learn how they work—and how to turn that understanding into better RF designs.
Ideal short dipole · power by direction
A good question is a good beginning
Pick something that has never quite made sense.
Follow it until it does.
Transmission lines & matching
When a signal changes appreciably during its travel time, the connection itself matters. Length, delay, and impedance become part of your design.
Read the explanationAntennas & propagation
Power entering an antenna is only the beginning. Radiation, heat, and direction tell the rest of the story.
Signals & modulation
Sometimes the signal is unchanged. The way you observe it makes all the difference.
RF fundamentals
Follow noise through a receiver and see why the order of its stages matters.
New to RF? You belong here.
You don’t need to understand everything at once. Follow a path that connects each new idea to the one before it.
Explore RF FundamentalsFrequency, wavelength, phase. Learn the language of a signal.
Connect watts, volts, and decibels to energy that does work.
Understand how resistance and stored energy shape a circuit.
Connect the circuit on your bench to the space around it.
Find out what sets the limit on the signals you can detect.
The whole picture
RF doesn’t fit into isolated boxes.
Explore the ideas that connect a wireless system.
The engineer’s workbench
Make a prediction. Change a value. See what follows—with the assumptions and equations in view.
Explore all toolsAbout RF Journey
For engineers, students, and people who want to know how wireless things work. RF Journey connects physical intuition to models, measurements, and practical design.
Learn the ideas. Apply them with Tools. Academy, our planned home for structured courses and certification, is the next step.