Calculadora de Densidad de Potencia RF
Calcula la densidad de potencia RF y la intensidad de campo eléctrico a distancia desde una antena.
Fórmula
Cómo Funciona
Radio Frequency (RF) Power Density is a measure of electromagnetic radiation power per unit area, which is critical in telecommunications, wireless engineering, and electromagnetic safety assessments. The power density calculation helps engineers and researchers evaluate potential radiation exposure and signal strength at various distances from a transmission source. The fundamental equation relates the Equivalent Isotropically Radiated Power (EIRP) to distance, revealing how electromagnetic energy disperses through space.
Ejemplo Resuelto
Problem: Calculate RF power density for a transmitter with 20W output power, 10 dBi gain, at 10 meters distance Solution: 1. Calculate EIRP: Pt = 20W (43 dBW), Gt = 10 dBi, EIRP = 53 dBW 2. Convert EIRP to watts: 10^(53/10) = 2000W 3. Calculate Power Density: S = 2000 / (4π * 10²) = 1.59 W/m² 4. Electric Field: E = √(1.59 * 120π) = 24.8 V/m 5. Magnetic Field: H = 24.8/377 = 0.066 A/m
Consejos Prácticos
- ✓Always verify transmitter specifications for accurate EIRP
- ✓Consider environmental obstacles that might affect signal propagation
- ✓Use calibrated measurement equipment for precise RF power density assessment
Errores Comunes
- ✗Forgetting to convert decibel values to linear watts
- ✗Not accounting for antenna gain in power calculations
- ✗Neglecting the inverse square law of radiation spread
Preguntas Frecuentes
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