This calculator determines the performance of a parabolic reflector antenna based on its diameter and operating frequency. It estimates parameters like gain, effective aperture, and beamwidth to help evaluate antenna efficiency.
PINCH OFF VOLTAGE – pinch off voltage in jfet
Formulas
Effective Aperture (Ae) = (π * D² * η) / 4 [using π = 3.14]
CMOS PMOS NMOS (nmos pmos and cmos)
Gain (G) = (4 * π * Ae) / λ²
Half Power Beamwidth (HPBW) = 60 * (λ / D)
IS THERE ANY DIFFERENCE BETWEEN PHOTODIODE AND…
Formula Explanation
- D = Reflector diameter
- λ = Wavelength = c / f
- η = Efficiency (typically 0.55–0.65)
- π is fixed to 3.14 to match EverythingRF values
Example
Input: D = 2 m, f = 3 GHz, η = 0.6
Result: Gain ≈ 33.5 dBi, HPBW ≈ 3°
Who uses it
Ideal for RF engineers and antenna designers optimizing satellite or radar reflector performance.