Category RF Fundamentals

Build a stronger RF foundation with practical explanations of antenna impedance, gain, polarization, return loss, VSWR, S-parameters, propagation, and link budgets. These articles connect core RF theory with the measurements, calculations, and design choices engineers use in real antenna projects.

Compact PCB antenna with a focused blue resonance field around a board-edge radiator

October 7, 2026
RF Fundamentals

Antenna Q Factor and Bandwidth: The Practical Tradeoff

Near-field probe above a PCB antenna with a distant far-field radiation pattern in a test chamber

September 30, 2026
RF Fundamentals

Near Field vs Far Field for Antenna Testing

Vector network analyzer connected to a PCB antenna for S11 and return-loss measurement

September 23, 2026
RF Fundamentals

VSWR vs Return Loss vs S11 Guide

Two reference antennas and a PCB antenna shown with a clean blue radiation pattern comparison grid

September 16, 2026
RF Fundamentals

dBi vs dBd vs dB: Antenna Gain Units Explained

PCB antenna connected to a vector network analyzer with abstract impedance and S11 plots

August 24, 2026
RF Fundamentals

Antenna Impedance: Practical RF Engineering Guide

PCB antenna with a blue three-dimensional radiation pattern, main lobe, side lobes, and polar grid

August 17, 2026
RF Fundamentals

Antenna Radiation Pattern Guide

PCB antenna radiating linear and circular polarization field patterns

August 10, 2026
RF Fundamentals

Antenna Polarization Explained

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