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Parabolic Dish Antenna Gain & Beamwidth Calculator

Easily calculate and compute parabolic dish antenna gain & beamwidth calculator with accurate equations, live formulas, and expert guidance.

Physical diameter of reflector.

RF center frequency (e.g. 12 GHz Ku-band).

Illumination and spillover efficiency (typically 0.55 - 0.70).

Calculated Result
44.9 dBi

Antenna Gain

Antenna Gain

44.9 dBi

Antenna Gain Dbi

44.9

Half Power Beamwidth Hpbw Deg

0.97

Effective Aperture Area M2

1.53

Physical Aperture Area M2

2.54

44.9 — dBi

Calculation Breakdown

  1. Applied FormulaSizes directional gain (dBi), half-power beamwidth (HPBW), and effective aperture for circular parabolic satellite dishes and radar reflectors.G_{dBi} = 10\log_{10}\left[ \eta \left(\frac{\pi D}{\lambda}\right)^2 \right]

Parabolic Dish Gain Metric Output

Interactive visualization based on your current inputs

Calculated Value
0.011223445Antenna Gain

What Is the Parabolic Dish Antenna Gain & Beamwidth Calculator?

This tool computes parabolic dish antenna gain & beamwidth calculator with high precision arithmetic.

How Does the Parabolic Dish Antenna Gain & Beamwidth Calculator Work?

Sizes directional gain (dBi), half-power beamwidth (HPBW), and effective aperture for circular parabolic satellite dishes and radar reflectors.

Parabolic Dish Antenna Gain & Beamwidth Calculator Formula & Variables

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

GdBi=10log⁡10[η(πDλ)2]G_{dBi} = 10\log_{10}\left[ \eta \left(\frac{\pi D}{\lambda}\right)^2 \right]

Sizes directional gain (dBi), half-power beamwidth (HPBW), and effective aperture for circular parabolic satellite dishes and radar reflectors.

How to Use the Parabolic Dish Antenna Gain & Beamwidth Calculator

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

Step-by-Step Example Calculation

Parabolic Dish Antenna Gain & Beamwidth Calculator Example

Input Values:

dishDiameterMeters:1.8
operatingFrequencyGhz:12.0
apertureEfficiencyEta:0.60
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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