Tools for dimensioning
of antennas

These pages contain various useful tools which are of great help when antenna systems are to be dimensioned electrically as well as mechanically.

Contents:

SWR Nomograph (1+2):
Based on the forward and reflected power of an antenna the SWR can be read in the Nomographs.

SWR including Feeder Loss:
The influence on SWR (on the transmitter) is reduced as a result of feeder cable loss.

Mismatch Loss Related to SWR:
SWR mismatch loss in dB.

Attenuation versus Frequency:
Cable loss in various cable types in proportion to the frequency.

Wind Loading:
Calculation of wind load.

Field Strength Versus Radiated Power:
Calculation of the electrical field of an antenna in V/m with a given ERP in proportion to the distance.

Field Strength in Volt per Metre (V/m) Versus Radiated Power and Distance:
The electrical field of an antenna in V/m with a given ERP in proportion to the distance shown in a graph.

Conversion Table (1), (2) og (3):
Conversion table between power, dBm, volt (RMS) and volt for dBμV. A large conversion table from dB to output and voltage.