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Beam Width between First Null (BWFN) of Helical Antenna Formula

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Helical Beam Width Of First Null Broadside Array in which a number of identical parallel antennas arranged along a line perpendicular to the line of array axis is known as broadside array. Check FAQs

BW fn = 115 \cdot \frac{{C λ}^{\frac{3}{2}}}{C \cdot \sqrt{S \cdot n}}

BW_fn - Helical Beam Width of First Null Broadside Array?C_λ - Helix Circumference?C - Operational Circumference?S - Turn Spacing?n - Number of Turns of Helical Antenna?

Beam Width between First Null (BWFN) of Helical Antenna Example

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Here is how the Beam Width between First Null (BWFN) of Helical Antenna equation looks like with Values.

Here is how the Beam Width between First Null (BWFN) of Helical Antenna equation looks like with Units.

Here is how the Beam Width between First Null (BWFN) of Helical Antenna equation looks like.

220.6484 = 115 \cdot \frac{{0.8}^{\frac{3}{2}}}{1.467 \cdot \sqrt{35.3 \cdot 6.01}}

220.6484° = 115 \cdot \frac{{0.8m}^{\frac{3}{2}}}{1.467m \cdot \sqrt{35.3m \cdot 6.01}}

220.6484 = 115 \cdot \frac{{0.8}^{\frac{3}{2}}}{1.467 \cdot \sqrt{35.3 \cdot 6.01}}

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Beam Width between First Null (BWFN) of Helical Antenna Solution

Follow our step by step solution on how to calculate Beam Width between First Null (BWFN) of Helical Antenna?

FIRST Step Consider the formula

BW fn = 115 \cdot \frac{{C λ}^{\frac{3}{2}}}{C \cdot \sqrt{S \cdot n}}

Next Step Substitute values of Variables

∴

BW fn = 115 \cdot \frac{{0.8m}^{\frac{3}{2}}}{1.467m \cdot \sqrt{35.3m \cdot 6.01}}

Next Step Prepare to Evaluate

∴

BW fn = 115 \cdot \frac{{0.8}^{\frac{3}{2}}}{1.467 \cdot \sqrt{35.3 \cdot 6.01}}

Next Step Evaluate

∴

BW fn = 3.85104078675442rad

Next Step Convert to Output's Unit

∴

BW fn = 220.64838381381°

LAST Step Rounding Answer

∴

BW fn = 220.6484°

Beam Width between First Null (BWFN) of Helical Antenna Formula Elements

Variables

Functions

Helical Beam Width of First Null Broadside Array

Helical Beam Width Of First Null Broadside Array in which a number of identical parallel antennas arranged along a line perpendicular to the line of array axis is known as broadside array.

Symbol: BW_fn

Measurement: AngleUnit: °

Note: Value should be greater than 0.

Formulas to find Helical Beam Width of First Null Broadside Array

Helix Circumference

Helix circumference of an imaginary cylinder that the helix conductor is wound around expressed in wavelengths. The ideal value for a helical antenna is 1.0.

Symbol: C_λ

Measurement: WavelengthUnit: m

Note: Value should be greater than 0.

Formulas to find Helix Circumference

Operational Circumference

Operational circumference is expressed in millimeters according to the operational wavelength.

Symbol: C

Measurement: LengthUnit: m

Note: Value should be greater than 0.

Formulas to find Operational Circumference

Turn Spacing

Turn Spacing in the antenna is the spacing between each turn of the antenna.

Symbol: S

Measurement: LengthUnit: m

Note: Value should be greater than 0.

Formulas to find Turn Spacing

Number of Turns of Helical Antenna

Number Of Turns Of Helical Antenna is the number of identical parallel antennas are arranged along a line.

Symbol: n

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

Formulas to find Number of Turns of Helical Antenna

sqrt

A square root function is a function that takes a non-negative number as an input and returns the square root of the given input number.

Syntax: sqrt(Number)

Other formulas in Helical Antennas category

Go Input Impedance of Helical Antenna

Z h = 140 \cdot C λ

Go Gain of Helical Antenna

G a = 11.8 + 10 \cdot \log 10 ({C λ}^{2} \cdot n \cdot S)

Go Helix Circumference of Helical Antenna

C λ = \frac{Z h}{140}

Go Half-Power Beamwidth of Helical Antenna

B hp = \frac{52}{C λ \cdot \sqrt{n \cdot S}}

How to Evaluate Beam Width between First Null (BWFN) of Helical Antenna?

Beam Width between First Null (BWFN) of Helical Antenna evaluator uses Helical Beam Width of First Null Broadside Array = 115*Helix Circumference^(3/2)/(Operational Circumference*sqrt(Turn Spacing*Number of Turns of Helical Antenna)) to evaluate the Helical Beam Width of First Null Broadside Array, The Beam Width between First Null (BWFN) of Helical Antenna formula is similar to the half power beam width, except the first null angle is estimated between the points of the lowest gain around the main lobe (nulls). Helical Beam Width of First Null Broadside Array is denoted by BW_fn symbol.

How to evaluate Beam Width between First Null (BWFN) of Helical Antenna using this online evaluator? To use this online evaluator for Beam Width between First Null (BWFN) of Helical Antenna, enter Helix Circumference (C_λ), Operational Circumference (C), Turn Spacing (S) & Number of Turns of Helical Antenna (n) and hit the calculate button.

FAQs on Beam Width between First Null (BWFN) of Helical Antenna

What is the formula to find Beam Width between First Null (BWFN) of Helical Antenna?

The formula of Beam Width between First Null (BWFN) of Helical Antenna is expressed as Helical Beam Width of First Null Broadside Array = 115*Helix Circumference^(3/2)/(Operational Circumference*sqrt(Turn Spacing*Number of Turns of Helical Antenna)). Here is an example- 12642.22 = 115*0.8^(3/2)/(1.467*sqrt(35.3*6.01)).

How to calculate Beam Width between First Null (BWFN) of Helical Antenna?

With Helix Circumference (C_λ), Operational Circumference (C), Turn Spacing (S) & Number of Turns of Helical Antenna (n) we can find Beam Width between First Null (BWFN) of Helical Antenna using the formula - Helical Beam Width of First Null Broadside Array = 115*Helix Circumference^(3/2)/(Operational Circumference*sqrt(Turn Spacing*Number of Turns of Helical Antenna)). This formula also uses Square Root (sqrt) function(s).

Can the Beam Width between First Null (BWFN) of Helical Antenna be negative?

No, the Beam Width between First Null (BWFN) of Helical Antenna, measured in Angle cannot be negative.

Which unit is used to measure Beam Width between First Null (BWFN) of Helical Antenna?

Beam Width between First Null (BWFN) of Helical Antenna is usually measured using the Degree[°] for Angle. Radian[°], Minute[°], Second[°] are the few other units in which Beam Width between First Null (BWFN) of Helical Antenna can be measured.

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Beam Width between First Null (BWFN) of Helical Antenna Formula

Beam Width between First Null (BWFN) of Helical Antenna Example

Beam Width between First Null (BWFN) of Helical Antenna Solution

Beam Width between First Null (BWFN) of Helical Antenna Formula Elements

Other formulas in Helical Antennas category

How to Evaluate Beam Width between First Null (BWFN) of Helical Antenna?

FAQs on Beam Width between First Null (BWFN) of Helical Antenna

Variable Name