Abstract: Antennas operating at the high-frequency (HF) band (3–30 MHz) are often electrically small due to the large wavelength of electromagnetic waves (10–100 m). Passive electrically small ...

Abstract: In this article, two primary bandwidth considerations for electrically small, platform-based antennas in the high-frequency (HF) band were analyzed: coupling element (CE) location and CE ...

Cellular signal boosters use big antennas to improve the coverage in your home or car. These are the top signal boosters for apartments, houses, and vehicles. I’m one of PCMag’s mobile writers. That ...

A century ago, when the International Amateur Radio Union was formally founded, this hobby looked very different than it does now. The whole world was different then, the human evolution has ...