NEXT ANTENNAS is a free learning platform for RF and antenna engineering — built by engineers, for engineers, students, and anyone curious about how wireless systems work.
RF and antenna engineering is notoriously difficult to learn. The textbooks are dense, the university courses are expensive, and most online resources stop at surface-level explanations. We believe that shouldn't be the case.
NEXT ANTENNAS was built to bridge that gap — offering free, in-depth, textbook-accurate guides and interactive calculators that go all the way from "what is a decibel?" to full patch antenna EM simulation. Every equation is cited, every variable is explained, and everything runs in your browser with no sign-up required.
From first principles to working calculations — all free, all in your browser.
Structured guides that go beyond definitions — every concept is explained with equations, diagrams, and real engineering context. Topics span RF fundamentals, antenna design, propagation, and microwave circuits.
10+ browser-based RF calculators — patch antenna design, microstrip width, VSWR, link budget, noise figure, Fresnel zone, and more. All compute instantly in JavaScript, no server calls, no account needed.
Step-by-step worked examples for every major calculation type — converting dBm to watts, computing EIRP, designing a patch antenna from scratch, running a link budget. Real numbers, real answers.
Our patch antenna simulator runs an extended cavity model directly in your browser — plotting S11, VSWR, input impedance, and E-plane radiation pattern with mutual coupling, surface waves, probe reactance, and finite ground plane corrections.
Every equation links back to its source — Balanis, Pozar, Hammerstad, IEEE papers. We don't use simplified approximations without telling you. If a formula has limits of validity, we say so.
The values that guide every article, calculator, and worked example we publish.
We cite every equation. Every formula traces back to a peer-reviewed source — Balanis, Pozar, Hammerstad, or IEEE. If there's an approximation, we say so and state its limits of validity.
All guides, all calculators, all worked examples — free forever. No subscription, no premium tier, no paywalled sections. RF education should not depend on who can afford a textbook.
Every calculator runs client-side in JavaScript. No server round-trips, no loading spinners, no account creation. Open a page, type your values, get your answer.
We write for the student working on their first PCB trace, the hobbyist building a 2.4 GHz patch, and the working engineer verifying a design before fabrication. Explanations start from first principles.
No regional restrictions, no institutional access requirements. Anyone with a browser and an interest in RF engineering can access everything we publish.
We add new calculators, articles, and examples regularly. When we find errors, we correct them and note the fix. The site gets better over time, not abandoned after launch.
Free guides, calculators, and worked examples — no account, no ads, no paywalls.