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Dipole Calculator

Make use of the free Dipole Calculator to calculate the length of the antenna, wavelength and dipole leg length in a simpler manner. Just provide the frequency of the antenna in the input section and click the calculate button to check the result within no time.


Dipole Calculator: Dipole Antenna Length Calculator is a handy tool that gives the antenna length, dipole leg length, wavelength, 1/2 of wavelength and 1/4 of wavelength details. This tool performs all the required operations and produces the result easily. For the convenience of students, we have enclosed a detailed explanation on how to calculate the length of the antenna, dipole formulas in the below-mentioned sections. Also, have a look at the solved examples and understand the concept.

How to Calculate Dipole Antenna Length?

The below-provided step by step process is useful to solve the dipole questions. Use these steps and get the result easily.

  • Get the frequency of the antenna from the question.
  • The division of 468 and frequency gives the antenna length.
  • Half of the antenna length gives the dipole leg length.
  • Divide light speed by frequency to check the wavelength.

Dipole Antenna Length Formulas

In general, dipole means two poles. A dipole antenna is a kind of radio antenna that has a conductive wise rod that is half of the length of the maximum wavelength the antenna is to generate. The wire rod is divided into two sections using an insulator.

Dipole Antenna Length Calculator

Dipole Antenna Length Formulas are

L = 468/f

l = L/2

Wavelength = c/f

Where,

L is the length of the total dipole antenna in ft

l is the length of the arm of the dipole antenna in ft

f is the antenna frequency

c is the speed of light which is 299,792,458 m/s

Example

Question: Calculate the dipole radio antenna length, dipole leg length and wavelength if the antenna frequency is 15 MHz.

Solution:

Given that

Frequency f = 15 MHz

The diople antenna formulas are

Dipole Antenna Total Length L = 486/f

L = 468/15

L = 31.2 ft

Dipole leg length l = L/2

l = 31.2/2

l = 15.6 ft

Wavelength = c/f

= 299,92,458/15

= 19.986 m

1/2 wavelength = 19.98/2 = 9.99 m

1/4 wavelength = 19.98/4 = 4.997 m

Therefore, the total length of antenna is 31.2 ft, dipole leg length is 15.6 ft, wavelength is 19.98 m, 1/2 wavelength is 9.99 m, 1/4 wavelength is 4.99 m.

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FAQ's on Dipole Antenna Length Calculator

1. How to use Dipole Calculator?

To calculate the parameters of antenna diploe, you have to know the frequency of that antenna. Enter the frequency and tap the calculate to obtain the total antenna length, length of one arm of the antenna, and wavelength.


2. What is the relationship between the dipole antenna length and frequency?

From the antenna length form, we can say that as antenna frequency increases the length decreases. So, the antenna length is inversely proportional to the frequency.


3. What is the effective length of an antenna?

The effective length or height of an antenna is the antenna length centre of radiation above the ground. It is the ratio of induced voltage and incident field.


4. Why dipole antennas are half-wave long?

The dipole antennas are cut and bent for better radiation. The length of the dipole is equal to half of the wavelength. Those antennas are called half-wave dipole antennas.


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