RF Journey.
Start learning
Menu

A field guide to RF engineering

Turn your curiosity into RF expertise.

Find a focused explanation, follow a structured course, or open a practical tool. Connect the RF question in front of you with the understanding behind it.Understand RF through clear explanations, interactive models and worked examples. Start a course or put an idea to work with a practical tool.

Start learning Explore community Browse tools
  • Understand RF behaviorConnect the equations to the physics.
  • Learn by solving problemsFollow worked engineering examples.
  • Compare design choicesExplore the trade-offs with RF tools.
  • Explore RF interactivelyChange model parameters and see how RF behavior responds.

Learn by exploring.

Change the dipole length to see how its radiation pattern changes.

Learn by exploring. Change the dipole length to see how its radiation pattern changes.

Dipole radiation patternFar-field power pattern of an ideal center-fed thin-wire dipole with sinusoidal current. Distance from the center represents relative power normalized to each pattern’s peak, keeping the maximum radius constant as length changes. The separate readout gives peak directivity over all directions in dBi, relative to an isotropic radiator with the same total radiated power. Changing the length can create additional lobes and nulls. The wire is schematic and uses a separate scale. The optional rotation changes only the viewing angle.
0.10 λ
Peak directivityIdeal dipole · normalized pattern
1.78 dBi

Total tip-to-tip length in free-space wavelengths. The drawing shows relative power normalized to each pattern’s peak, keeping the maximum radius constant. The separate peak directivity value is the maximum over all directions, relative to an isotropic radiator with the same total radiated power. The ideal thin-wire model assumes sinusoidal current; it does not include losses or mismatch.

About this model in The Dipole Antenna

Learn

Learn RF engineering.

Read a focused explanation or follow a structured course. Explore RF from signal fundamentals to practical design and measurement, with interactive models and worked examples along the way.Connect RF fundamentals to practical design through focused explanations, courses and interactive models.

Articles

All articles

Explore practical RF questions through explanations, tutorials and technical references.Focused explanations for practical RF questions.

Courses

All courses

Build your knowledge through connected lessons, interactive models and worked examples in RF Fundamentals.

Community

RF engineering,
learning together.

Explore the community

A community of practice for engineers to ask questions, compare design decisions and share what they are learning. Bring a circuit, a measurement or a project, explain your reasoning and work through the problem together. Join the conversations with your verified RF Journey account.Ask questions, compare design decisions and share what you are learning. Join the conversations with your verified RF Journey account.

Tools

The RF workbench.

Browse all 20 tools

Bring calculations and physical intuition together. Convert power, explore an impedance match or plan a radio link. Change an input, compare results and understand the equations and assumptions behind your design.Convert power, explore an impedance match or plan a radio link, with equations and assumptions in view.

About RF Journey

Built from
engineering practice.

RF Journey was built to make RF theory easier to understand and apply. Through clear explanations, interactive models, and worked examples, it connects physical intuition with the calculations, measurements, and design decisions engineers use in practice. The goal is to deepen understanding of RF circuits and systems and build confidence in solving practical engineering problems.

Contact Contribute Shop preview