RF & Antenna Education

From first principles to advanced beamforming — our library of guides, tutorials, and deep-dives is free for engineers, students, and enthusiasts worldwide.

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Structured topic guides — each covers a complete subject area with articles, equations, and worked examples.

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Beginner
Fundamentals

Antenna Basics

Understand radiation patterns, antenna gain, directivity, polarisation, and the fundamentals of how antennas radiate and receive electromagnetic energy.

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Beginner
Fundamentals

RF Fundamentals

A practical introduction to frequency, wavelength, the electromagnetic spectrum, free-space path loss, and the physics behind radio wave propagation.

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Beginner
RF Fundamentals

dB, dBm & dBi Explained — The RF Engineer's Guide to Decibels

A complete practical guide to decibels in RF engineering — what dB, dBm, dBi, dBd, and dBW mean, how to convert between them, and how to apply them in link budgets, noise calculations, and antenna gain comparisons.

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Intermediate
RF Fundamentals

Impedance Matching — VSWR, Smith Chart, L-Networks & Stub Matching

A complete practical guide to impedance matching in RF engineering — covering VSWR, reflection coefficient, the Smith chart, L-networks, quarter-wave transformers, stub matching, and practical techniques for minimising return loss.

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Intermediate
RF Fundamentals

RF Behaviour of Passive Components — Resistors, Capacitors & Inductors

How resistors, capacitors, and inductors really behave at radio frequencies — parasitic models, self-resonance, impedance vs frequency graphs, and practical guidelines for selecting components in RF circuits.

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Intermediate
RF Fundamentals

The Friis Transmission Equation

How much signal power arrives at a receiving antenna? The Friis equation connects transmit power, antenna gains, and free-space path loss into a single expression — the foundation of every wireless link budget.

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