Calculadora de Balun y Transformador RF
Calcula la relación de transformación y la transformación de impedancia para baluns y transformadores de RF.
Fórmula
Cómo Funciona
A balun (balanced-unbalanced) transformer is a critical RF component that transforms impedance between balanced and unbalanced transmission lines or circuits. The primary function is to match impedances and transition between different circuit configurations, typically converting between single-ended and differential signaling. The key parameter is the turns ratio, which determines the impedance transformation and is calculated by the square root of load impedance divided by source impedance.
Ejemplo Resuelto
Problem: Design a 4:1 impedance transformer balun with a source impedance of 50Ω and target load impedance of 200Ω Solution: 1. Verify turns ratio: N = √(200/50) = √4 = 2 2. Confirm impedance transformation: 50Ω * (2)² = 200Ω 3. Select appropriate core material with suitable permeability for frequency range 4. Wind transformer with calculated turns ratio 5. Verify matching and minimal insertion loss
Consejos Prácticos
- ✓Choose low-loss ferrite cores matched to operating frequency
- ✓Use precise winding techniques to minimize stray capacitance
- ✓Consider skin effect and proximity effect at high frequencies
- ✓Validate transformer performance with network analyzer
Errores Comunes
- ✗Neglecting core material frequency limitations
- ✗Incorrect winding technique causing increased insertion loss
- ✗Overlooking parasitic capacitance at high frequencies
- ✗Using inappropriate core material for specific frequency range
Preguntas Frecuentes
Shop Components
Affiliate links — we may earn a commission at no cost to you.
Related Calculators
RF
VSWR / Return Loss
Convert between VSWR, return loss, reflection coefficient, mismatch loss, and reflected/transmitted power percentage for RF impedance matching.
RF
Link Budget
Calculate RF link budget: transmit power, free space path loss, antenna gains, and received signal level. Determine link margin and maximum range.
RF
Microstrip Impedance
Calculate microstrip transmission line impedance using Hammerstad-Jensen equations. Get Z₀, effective dielectric constant, and propagation delay for PCB trace design.
RF
dBm Converter
Convert dBm to watts, milliwatts, dBW, dBμV, and volts RMS. Essential RF power unit conversion tool for signal levels and link budgets.
RF
Cascaded NF
Calculate cascaded noise figure for a chain of RF stages using the Friis formula. Essential for LNA and receiver chain design.
RF
Skin Depth
Calculate the skin depth (penetration depth) of electromagnetic fields in conductors as a function of frequency and material properties.