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Helical Antenna Axial-Mode Circular Polarization Gain & Axial Ratio Calculator

Easily calculate and compute helical antenna axial-mode circular polarization gain & axial ratio calculator with accurate equations, live formulas, and expert guidance.

Operating frequency (e.g. 1420 MHz hydrogen line / L-band satellite).

Number of wire spiral turns (typically 6 to 18).

Pitch angle between turn and normal plane (typically 12° to 14°).

Normalized circumference (must be 0.8 to 1.15 for axial mode).

Calculated Result
11.6 dBi

Axial Mode Gain

Axial Mode Gain

11.6 dBi

Helical Gain Dbi

11.6

Half Power Beamwidth Deg

34.2

Axial Ratio Db

0.42

Helix Diameter Mm

67.2

11.6 — dBi

Calculation Breakdown

  1. Applied FormulaApplies Kraus formulas to design axial-mode end-fire helical antennas providing high directivity and circular polarization (RHCP/LHCP) for satellite downlinks.G = 10\log_{10}\left[6.2 C_\lambda^2 N S_\lambda\right], \quad S = C \tan\alpha, \quad D = \frac{C}{\pi}

Axial-Mode Helical Antenna Metric Output

Interactive visualization based on your current inputs

Calculated Value
0.02.95.88.712Axial Mode Gain

What Is the Helical Antenna Axial-Mode Circular Polarization Gain & Axial Ratio Calculator?

This tool computes helical antenna axial-mode circular polarization gain & axial ratio calculator with high precision arithmetic.

How Does the Helical Antenna Axial-Mode Circular Polarization Gain & Axial Ratio Calculator Work?

Applies Kraus formulas to design axial-mode end-fire helical antennas providing high directivity and circular polarization (RHCP/LHCP) for satellite downlinks.

Helical Antenna Axial-Mode Circular Polarization Gain & Axial Ratio Calculator Formula & Variables

The core mathematical equation utilized by this calculator is expressed as:

G=10log⁡10[6.2Cλ2NSλ],S=Ctan⁡α,D=CπG = 10\log_{10}\left[6.2 C_\lambda^2 N S_\lambda\right], \quad S = C \tan\alpha, \quad D = \frac{C}{\pi}

Applies Kraus formulas to design axial-mode end-fire helical antennas providing high directivity and circular polarization (RHCP/LHCP) for satellite downlinks.

How to Use the Helical Antenna Axial-Mode Circular Polarization Gain & Axial Ratio Calculator

  1. Enter your parameters into the designated input fields to calculate the result immediately.

Step-by-Step Example Calculation

Helical Antenna Axial-Mode Circular Polarization Gain & Axial Ratio Calculator Example

Input Values:

centerFrequencyMhz:1420
numberOfTurnsN:10
helixPitchAngleDeg:13
helixCircumferenceOverWavelength:1
Worked Steps: Sample evaluation based on standard reference conditions.

Understanding Your Result

The calculated primary figure indicates the optimal or required dBi.

Factors That Affect the Result

  • Measurement tolerances, operational variance, and real-world conditions.

When Should You Use This Calculator?

  • Everyday budgeting, technical homework, professional estimation, and household projects.

Assumptions & Limitations

  • Assumes standard atmospheric or environmental parameters unless specified.

Frequently Asked Questions

Calculation Accuracy & Reference Note

Double-precision IEEE 754 arithmetic with validated empirical constants.

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