Category :
calculators
Date Posted :
March 18, 2025
Effective Antenna Aperture Calculator

Effective Antenna Aperture Calculator

Calculate the effective aperture using:
\[ A_e = \frac{\lambda^2\,G}{4\pi} \] with \(\lambda=\frac{0.3}{f}\) (m) for frequency \(f\) in GHz and \(G=10^{\frac{G_{\rm dB}}{10}}\).

* Enter the operating frequency (GHz) and antenna gain (dB).

Step 1: Enter Parameters

Example: 10 GHz

Example: 20 dB

Derived Formula: \( A_e = \frac{\lambda^2\,G}{4\pi} \) with \(\lambda=\frac{0.3}{f}\) and \(G=10^{\frac{G_{\rm dB}}{10}}\).


Practical Example:
For \( f = 10\,\text{GHz} \) and a gain of 20 dB (linear gain ≈ 100), \( \lambda \approx 0.03\,\text{m} \) and \( A_e \approx \frac{(0.03)^2 \times 100}{4\pi} \approx 7.16\times10^{-3}\,\text{m}^2 \).