CALCULATORS / ELECTRICAL

RF, wireless and antennas

Link and transmission models with declared propagation assumptions.

transmit power, antenna gains, losses, receiver sensitivity → received power, link margin

frequency, separation distance → free-space attenuation, regime assumptions

frequency, medium velocity factor → wavelength, quarter/half-wave dimensions

frequency, range, gains, transmit power → ideal far-field received power

path length, frequency, obstacle position → zone radius, geometric clearance

conductor/dielectric geometry, material, frequency → nominal impedance, conditional loss

load and reference impedance → reflection coefficient, return loss, VSWR

power or voltage ratio, impedance convention → dBm, dBW, W or dB

source/load impedances, target frequency → candidate L/C values, modeled match

modulation/rate, packet fields, overhead, retransmission assumption → airtime, payload throughput, energy estimate