Input Impedance of Helical Antenna Solution

STEP 0: Pre-Calculation Summary
Formula Used
Input Impedance = 140*Helix Circumference
Zh = 140*Cλ
This formula uses 2 Variables
Variables Used
Input Impedance - (Measured in Ohm) - The Input Impedance can be calculated as the current travels along the antenna and the phase varies continuously.
Helix Circumference - (Measured in Meter) - 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.
STEP 1: Convert Input(s) to Base Unit
Helix Circumference: 0.8 Meter --> 0.8 Meter No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
Zh = 140*Cλ --> 140*0.8
Evaluating ... ...
Zh = 112
STEP 3: Convert Result to Output's Unit
112 Ohm --> No Conversion Required
FINAL ANSWER
112 Ohm <-- Input Impedance
(Calculation completed in 00.004 seconds)

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Helical Antennas Calculators

Beam Width between First Null (BWFN) of Helical Antenna
​ LaTeX ​ Go Helical Beam Width of First Null Broadside Array = 115*Helix Circumference^(3/2)/(Operational Circumference*sqrt(Turn Spacing*Number of Turns of Helical Antenna))
Gain of Helical Antenna
​ LaTeX ​ Go Helical Antenna Gain = 11.8+10*log10(Helix Circumference^2*Number of Turns of Helical Antenna*Turn Spacing)
Helix Circumference of Helical Antenna
​ LaTeX ​ Go Helix Circumference = Input Impedance/140
Input Impedance of Helical Antenna
​ LaTeX ​ Go Input Impedance = 140*Helix Circumference

Input Impedance of Helical Antenna Formula

​LaTeX ​Go
Input Impedance = 140*Helix Circumference
Zh = 140*Cλ

How is helical antenna constructed?

Helical antenna or helix antenna is the antenna in which the conducting wire is wound in helical shape and connected to the ground plate with a feeder line.

How to Calculate Input Impedance of Helical Antenna?

Input Impedance of Helical Antenna calculator uses Input Impedance = 140*Helix Circumference to calculate the Input Impedance, The Input Impedance of Helical Antenna formula is defined as travelling wave antenna, which means the current travels along the antenna and the phase varies continuously. In addition, the input impedance is primarily real and can be approximated in Ohms. Normally this is around 140 Ω, though using a different circumference value will affect it. Input Impedance is denoted by Zh symbol.

How to calculate Input Impedance of Helical Antenna using this online calculator? To use this online calculator for Input Impedance of Helical Antenna, enter Helix Circumference (Cλ) and hit the calculate button. Here is how the Input Impedance of Helical Antenna calculation can be explained with given input values -> 112 = 140*0.8.

FAQ

What is Input Impedance of Helical Antenna?
The Input Impedance of Helical Antenna formula is defined as travelling wave antenna, which means the current travels along the antenna and the phase varies continuously. In addition, the input impedance is primarily real and can be approximated in Ohms. Normally this is around 140 Ω, though using a different circumference value will affect it and is represented as Zh = 140*Cλ or Input Impedance = 140*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.
How to calculate Input Impedance of Helical Antenna?
The Input Impedance of Helical Antenna formula is defined as travelling wave antenna, which means the current travels along the antenna and the phase varies continuously. In addition, the input impedance is primarily real and can be approximated in Ohms. Normally this is around 140 Ω, though using a different circumference value will affect it is calculated using Input Impedance = 140*Helix Circumference. To calculate Input Impedance of Helical Antenna, you need Helix Circumference (Cλ). With our tool, you need to enter the respective value for Helix Circumference 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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