Far Field Distance Calculator for Dipole and Log Periodic Antennas

Use this calculator to calculate the value of Farfield distance for dipole and log-periodic antennas from the frequency

Enter the value of frequency to get far field distance

Result

  • Farfield
    meter
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Freq  -  Frequency of wave

C       - Speed of Light (3 x 108)

Far field Distance - The far-field distance is the distance from the transmitting antenna to the beginning of the Fraunhofer region or far-field. In the far-field, the radiation pattern does not change shape as the distance increases. 

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Dipole antenna is the most basic antenna used in broadcasting and receiving radio frequency signals. It consists of two conductors of equal length oriented end-to-end with the feedline connected between them. The length of the radiating elements determines many of the properties of the dipole antenna: its feed impedance, center operating frequency, whether it is a resonant antenna, etc. As such the dipole length is an important aspect of the dipole antenna parameters.


Log-Periodic antennas are multi-element directional antennas used for operating in a wide range of frequencies. The most common Log- periodic antenna used are LPDA(Log-Periodic Dipole Array) antennas which is a combination of a dipole antenna and log-periodic antenna. The construction and operation of a log-periodic antenna are similar to that of a Yagi-Uda antenna. The main advantage of this antenna is that it exhibits constant characteristics over a desired frequency range of operation. 

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