Technical Library
Evergreen technical reference articles on antenna fundamentals: polarization, radiation patterns, selection, stacking, lightning protection and RF cabling.
Antenna Polarization Explained
Polarization describes the orientation of the electric field radiated by an antenna. Matching the polarization of transmit and receive antennas is one of the…
Read guide →Antenna Radiation Patterns
A radiation pattern is the graphical representation of how an antenna distributes radiated power in space. Reading the azimuth and elevation plots correctly is…
Read guide →How to Select an Antenna
Selecting an antenna is a process of matching frequency, gain, polarization, pattern and mechanical constraints to the real conditions of your deployment. This guide…
Read guide →Stacking Yagi Antennas
Stacking two or more Yagi antennas and feeding them in phase increases gain and narrows the beamwidth beyond what a single longer boom can…
Read guide →Antenna Lightning Protection
An elevated antenna is frequently the highest conductive point on a structure and therefore a preferred lightning attachment point. A correct protection and grounding…
Read guide →Yagi Antenna Mounts
A Yagi antenna only delivers its rated gain when it is rigidly mounted and accurately aimed. This article covers mast hardware, wind loading and…
Read guide →RF Coaxial Cables and Assemblies
The feed line between radio and antenna is part of the antenna system: its loss, impedance and connector choice directly affect the delivered power…
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