How To Calculate Size Of Dipole Atwal Based On Hz

Dipole Figurer

Created by Łucja Zaborowska , MD, PhD candidate

Reviewed by

Bogna Szyk and Jack Bowater

Last updated:

Jul 28, 2020

Table of contents:

How to apply the dipole calculator?
How is dipole antenna length calculated?
Dipole FM antenna length and construction

Our dipole calculator is a simple tool that allows you to compute the length of a unproblematic antenna - it'll too provide y'all with the value of the wavelength and the aligning cistron [k].

In the text below, we will cover the basic rules of antenna construction, how to calculate dipole antenna length, and explain how to put our wire antenna calculator to work.

How to use the dipole reckoner?

In order to utilise our antenna estimator, y'all'll need to know the frequency on which you want your antenna to operate.

Your result volition consist of:

Your total antenna length (L);
Length of one arm of the antenna (50); and
Wavelength, every bit well equally its portions: 1/ii, 1/4 (it'll also allow you to use it as a ane/ii wave dipole calculator).

In the avant-garde mode:

You may enter the diameter of your conductor to obtain the aligning factor [k]. You may need it for high frequencies and thick wires, or if your antenna volition be fabricated out of the tube.

💡 The lengths used in our dipole computer are inches, centimeters and all other popular units. Experience costless to play with the numbers however you similar!

Try our other essential tools:

The wire gauge tool - assess the properties of a wire, such as its diameter and resistance 📎
Resonant frequency calculator
Harmonic wave tool 🌊

How is dipole antenna length calculated?

The antenna length formulas used in our dipole length calculator are as follows:

L = 468 / f

l = L / 2

Where:

Fifty - the length of the full dipole antenna in feet (ft);
l - the length of the arm of the dipole antenna in anxiety (ft); and
f - the desired frequency.

We also used the simple wavelength formula:

Wavelength = c / f

Where:

c - the speed of low-cal: 299,792,458 m/s; and
f - frequency.

If you want to employ the adjustment factor [yard], yous'll need the following version:

50 = 0.5 * k * c / f

Where:

c means the speed of low-cal; and
grand is the adjustment factor, calculated with a following equation (simplified version):

m= 0.9787 - [(11.86497 / (1 + (R/0.000449)^1.7925)^0.3)]

Where:

R = ½ wavelength / Bore of a conductor.

Dipole FM antenna length and structure

Dipole antennas are the easiest and probably the cheapest antennas to construct. They tin can give you a corking insight into how antennas work and tin be an splendid commencement for a beginner.

What volition I need?

Some wire - usually made out of copper;
Insulators - should be placed on both ends of the wire;
A dipole centerpiece (an insulator can serve this purpose);
... with a feeder attached to information technology - usually a coax cablevision with an impedance of 50 Ω (call up to seal the endings!);
Fixings;
Two high-located, obstruction-costless points to found the antenna - the dipole's length is the near crucial feature to consider; and
Of grade - our unproblematic dipole figurer to assess the length of the device

It is recommended to cut the wire a trivial bit longer than calculated, and and so trim information technology to the length that provides you with the best results.

Łucja Zaborowska , Doctor, PhD candidate

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