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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.

 

HCM Codes:

Typical radiation pattern.

 

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