RF Calculators

Convert between VSWR, return loss, reflection coefficient, and mismatch loss. Understand impedance matching quality at a glance.

Compute end-to-end RF link margin from transmitter power, antenna gains, cable losses, and free space path loss. Essential for any wireless design.

Calculate signal attenuation over distance in free space. Input frequency and distance to get path loss in dB. Supports metric and imperial units.

Stack multiple stages in a receiver chain and compute the total system noise figure using the Friis equation. Add amplifiers, filters, and mixers.

Look up cutoff frequencies for standard WR waveguide sizes from WR-03 to WR-2300. Includes TE and TM mode calculations and recommended operating bands.

Calculate the characteristic impedance of a microstrip trace from width, substrate thickness, and dielectric constant. Target 50Ω or any impedance.

Determine the skin depth for copper, gold, silver, aluminum, and other conductors at any frequency. Critical for plating thickness and waveguide loss analysis.

Convert between dBm, dBW, watts, and milliwatts instantly. Enter any value in one unit and see all equivalent representations.

Interactive beamwidth and gain calculator for aperture antennas from 10 to 200 GHz. Supports parabolic, Cassegrain, and lens antenna geometries with dual-chart visualization.

Convert between S, Z, Y, and ABCD parameter matrices. Enter any set of two-port network parameters and get the equivalent in all formats.

Calculate the received frequency shift for a moving transmitter or receiver. Includes presets for automotive radar, LEO satellite, GPS, and weather radar scenarios.

Look up attenuation for 13 standard coaxial cable types (RG-58, RG-142, LMR-400, etc.) at any frequency from HF through mmWave. Includes comparison table.