Free, browser-based tools for RF and microwave engineering — no installs, no sign-ups. Every tool runs entirely in your browser, saves your work locally, and is built on textbook-verified math with built-in self-tests.
Chain LNAs, filters, mixers and amps; get system NF (Friis), IIP3/IIP2, P1dB, SFDR, sensitivity, mixer spur & image analysis, and the full level diagram.
L / Pi / T and wideband multi-section impedance matching with loss models, E-series snapping, Smith chart and S11 sweep — complex source to complex load.
EIRP, free-space path loss, noise floor, SNR and fade margin from TX to RX, with max-range solving, Fresnel-zone clearance and a distance sweep chart.
Butterworth and Chebyshev ladder synthesis — lowpass, highpass, bandpass, bandstop — with E-series component snapping and the true S21/S11 of the snapped design.
Reference, PFD/charge-pump and VCO contributions shaped by the closed loop, integrated RMS jitter, spot-noise table and a full log-log phase noise plot.
Microstrip, stripline and CPW/GCPW — Z₀ and εeff analysis, width synthesis for a target impedance, loss per cm, skin depth, electrical length and λ/4.
Linear and planar phased arrays with live sliders — Dolph-Chebyshev and other tapers, beam steering, polar/rectangular patterns, HPBW, sidelobes, directivity and grating-lobe warnings.
Rectangular microstrip patch synthesis — W, L, εeff, edge resistance, inset-feed depth and feed-line width for 50 Ω, bandwidth/Q and an S11 sweep (Balanis transmission-line model).
Parabolic dish gain, beamwidth and focal geometry, plus optimum-gain pyramidal horn design from a target gain and waveguide (Balanis χ-equation solver).
Dipole, monopole, inverted-V, folded dipole, quad loop and 5/8 vertical — lengths with end-effect correction, feedpoint impedance, balun/choke guidance and dimensioned sketches.
Interactive Smith chart for visualizing impedance, reflection coefficient and transmission-line behaviour.