RF Calculators

Z₀, εeff, wavelength, conductor & dielectric loss. Synthesis and analysis modes.

Buried inner-layer trace between two ground planes. Z₀, attenuation, TEM cutoff.

Z₀, TE₁₁ cutoff, loss vs frequency. Presets for RG-58, LMR-400 and common cables.

Coplanar waveguide with or without ground. Z₀, εeff, wavelength via conformal mapping.

Zdiff, Zodd, Zeven, coupling vs gap. Edge-coupled microstrip and broadside stripline.

TE₁₀ cutoff, guide wavelength, wave impedance, attenuation. WR-xx standard presets.

Open-wire feeder and twin-lead. Z₀, C and L per metre, wavelength.

Via L and anti-pad C, self-resonant frequency, impedance vs frequency chart.

Cascaded NF, IIP3, P1dB, sensitivity, SFDR. Up to 10 stages with per-stage breakdown.

Butterworth, Chebyshev, Bessel — LP/HP/BP/BS up to 10th order. L/C values + response plot.

Pi and T pad resistor values for any dB and impedance. Power dissipation per resistor.

Resonant frequency, Q, −3 dB bandwidth for series and parallel LC tanks.

δ in µm, surface resistance Rs, conductor loss vs frequency. Any metal.

FSPL in dB, received power, max range. System presets for WiFi, LTE, 5G, satellite.

EIRP, received power, SNR, link margin. Full TX-to-RX budget with all gains and losses.

Radar range equation — max detection range, SNR, MDS, link budget. Presets for automotive, weather, ATC and military radars.

Every m×fRF ± n×fLO product up to order 11. Colour-coded in-band / near / out-of-band with named types — image, half-IF, IM3, LO harmonic. CSV export.

Frequency, power, voltage, field strength, noise temp, wavelength — all units at once.

VSWR ↔ return loss ↔ |Γ| ↔ mismatch loss. Instant bidirectional conversion.

dBm ↔ dBW ↔ W ↔ mW ↔ Vrms ↔ gain ratio. Enter any value, all others update.

Complex Γ, |Γ|, phase, VSWR, RL and mismatch loss from any load impedance.

S11 plotter, auto-solve L/Pi/T matching, single-stub tuner. Touchstone upload supported.

Upload any Touchstone file (.s1p–.s9p), plot all S-parameters vs frequency.

Rollett K, delta, mu, mu-prime and stability circles from .s2p file vs frequency.

Cascade two .s2p files via T-matrix and plot the combined S11, S21 vs frequency.

L-network, λ/4 transformer, single-stub tuner. Component values for any Z_source and Z_load.

Branch-line 90° hybrid and rat-race 180° hybrid. Line impedances and PCB trace widths.

Equal-split, unequal-split and wideband Wilkinson. Line impedances and isolation resistor values.

ULA/URA beam patterns, 9 taper windows, UV heatmap, grating lobe detection, weight table CSV.

Rectangular patch dimensions, resonant frequency, feed point location, efficiency estimate.

Half-wave dipole length, feed impedance, radiation pattern. Folded dipole variant included.