Directivity of Large Loop Calculator

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Special Antennas

Antenna Theory Parameters

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✖The Area of large circular loop is the area covered by the large circular loop.ⓘ Area of Large Circular Loop [a]			+10% -10%
✖Wavelength in Loop Antenna is the distance between identical points (adjacent crests) in the adjacent cycles of a waveform signal propagated in space or along a wire.ⓘ Wavelength in Loop Antenna [λ_a]			+10% -10%

✖The Directivity of large loop is the measure of the concentration of an antennas's radiation pattern in a particular direction.ⓘ Directivity of Large Loop [D]

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Formula

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Directivity of Large Loop

Formula

`"D" = 4.25*"a"/"λ"_{"a"}`

Example

`"0.377732"=4.25*"8m²"/"90.011m"`

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Directivity of Large Loop Solution

STEP 0: Pre-Calculation Summary

Formula Used

Directivity of Large Loop = 4.25*Area of Large Circular Loop/Wavelength in Loop Antenna
D = 4.25*a/λ_a
This formula uses 3 Variables

Variables Used

Directivity of Large Loop - The Directivity of large loop is the measure of the concentration of an antennas's radiation pattern in a particular direction.
Area of Large Circular Loop - (Measured in Square Meter) - The Area of large circular loop is the area covered by the large circular loop.
Wavelength in Loop Antenna - (Measured in Meter) - Wavelength in Loop Antenna is the distance between identical points (adjacent crests) in the adjacent cycles of a waveform signal propagated in space or along a wire.

STEP 1: Convert Input(s) to Base Unit

Area of Large Circular Loop: 8 Square Meter --> 8 Square Meter No Conversion Required
Wavelength in Loop Antenna: 90.011 Meter --> 90.011 Meter No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

D = 4.25*a/λ_a --> 4.25*8/90.011

Evaluating ... ...

D = 0.377731610580929

STEP 3: Convert Result to Output's Unit

0.377731610580929 --> No Conversion Required

FINAL ANSWER

0.377731610580929 ≈ 0.377732 <-- Directivity of Large Loop

(Calculation completed in 00.004 seconds)

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< 8 Loop Antennas Calculators

Efficiency Factor of Loop Antenna

Go Efficiency Factor = Radiation Resistance of Small Loop/(Radiation Resistance of Small Loop+Loss Resistance)

Quality Factor of Loop Antenna

Go Quality Factor = Inductive Reactance/(2*(Loss Resistance+Radiation Resistance of Small Loop))

Isotropic Radiation Intensity for Loop Antenna

Go Isotropic Radiation Intensity of Loop Antenna = Radiation Intensity in Loop Antenna/Loop Antenna Gain

Radiation Resistance of Small Loop

Go Radiation Resistance of Small Loop = 31200*Area of Small Circular Loop^2/Wavelength in Loop Antenna^4

Radiation Resistance of Large Loop

Go Radiation Resistance of Large Loop = 3720*Area of Large Circular Loop/Wavelength in Loop Antenna

Terminal Resistance of Loop Antenna

Go Terminal Resistance of Loop Antenna = Loss Resistance+Radiation Resistance of Small Loop

Directivity of Large Loop

Go Directivity of Large Loop = 4.25*Area of Large Circular Loop/Wavelength in Loop Antenna

Size of Small Loop

Go Size of Small Loop = Wavelength in Loop Antenna/10

Directivity of Large Loop Formula

Directivity of Large Loop = 4.25*Area of Large Circular Loop/Wavelength in Loop Antenna
D = 4.25*a/λ_a

What is the importance of directivity of antenna?

One very important quantitative description of an antenna is how much it concentrates energy in one direction in preference to radiation in other directions. This characteristic of an antenna is called directivity and is equal to its gain if the antenna is 100% efficient.

What are the different directivity value of antennas?

Directivity of any small antenna can be assumed approximately equal to 3/2 and An antenna that radiated equally well in all directions would be omni-directional and have a directivity of 1 (0 dB).

How to Calculate Directivity of Large Loop?

Directivity of Large Loop calculator uses Directivity of Large Loop = 4.25*Area of Large Circular Loop/Wavelength in Loop Antenna to calculate the Directivity of Large Loop, The Directivity of large loop formula is defined as the Directivity of large loop is the measure of the concentration of an antennas's radiation pattern in a particular direction. Directivity of Large Loop is denoted by D symbol.

How to calculate Directivity of Large Loop using this online calculator? To use this online calculator for Directivity of Large Loop, enter Area of Large Circular Loop (a) & Wavelength in Loop Antenna (λ_a) and hit the calculate button. Here is how the Directivity of Large Loop calculation can be explained with given input values -> 0.377736 = 4.25*8/90.011.

FAQ

What is Directivity of Large Loop?

The Directivity of large loop formula is defined as the Directivity of large loop is the measure of the concentration of an antennas's radiation pattern in a particular direction and is represented as D = 4.25*a/λ_a or Directivity of Large Loop = 4.25*Area of Large Circular Loop/Wavelength in Loop Antenna. The Area of large circular loop is the area covered by the large circular loop & Wavelength in Loop Antenna is the distance between identical points (adjacent crests) in the adjacent cycles of a waveform signal propagated in space or along a wire.

How to calculate Directivity of Large Loop?

The Directivity of large loop formula is defined as the Directivity of large loop is the measure of the concentration of an antennas's radiation pattern in a particular direction is calculated using Directivity of Large Loop = 4.25*Area of Large Circular Loop/Wavelength in Loop Antenna. To calculate Directivity of Large Loop, you need Area of Large Circular Loop (a) & Wavelength in Loop Antenna (λ_a). With our tool, you need to enter the respective value for Area of Large Circular Loop & Wavelength in Loop Antenna and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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