RF & Microwave Simulators

Antenna Array Beamforming Calculator

RF & Microwave

Calculate the array factor for a linear phased array. Set elements, spacing, scan angle, and window. Visualize the polar radiation pattern in real time.

Antenna Basics · Dipole Antenna Calculator

RF & Microwave

Calculate resonant length, radiation resistance, gain, VSWR & path loss for dipole, monopole, loop & patch antennas. Free online tool.

Friis Transmission Equation Simulator

RF & Microwave

Compute the received power of a radio link travelling through free space with the Friis transmission equation.

Antenna Gain & Directivity Simulator — Friis Transmission Equation

RF & Microwave

Simulate antenna gain, directivity, and link budget instantly. Adjust frequency, power, and distance to compute Friis transmission and free-space path loss.

Antenna Radiation Pattern Simulator

RF & Microwave

Simulate and visualize antenna radiation patterns in real-time for dipoles, arrays, and Yagis. Compute gain, HPBW, and side lobe levels automatically.

Antenna Radiation Pattern Visualizer — Directivity, Gain & HPBW Calculator

RF & Microwave

Visualize antenna radiation patterns in real time. See polar charts for dipole, monopole, patch & Yagi-Uda antennas with directivity calculations.

Resistive Attenuator Pad Simulator

RF & Microwave

Design a resistive attenuator pad (T or π) that reduces a signal by a fixed number of dB while keeping the system matched to its characteristic impedance Z₀.

Branch-Line Coupler Simulator

RF & Microwave

Branch-Line Coupler Simulator: Design the 3-dB branch-line coupler (quadrature hybrid) that splits one RF signal into two outputs of equal amplitude and a 90…

Coaxial Cable Impedance Calculator — Z_0 and Propagation Speed

RF & Microwave

Coaxial cable impedance calculator: compute Z_0, velocity factor and per-unit-length C/L from inner radius a, outer inner radius b, and dielectric constant ε_r in real time.

Coplanar Waveguide (CPW) Simulator — Characteristic Impedance Z_0

RF & Microwave

Coplanar waveguide simulator calculating characteristic impedance Z₀ using Wheeler/Hilberg approximation. Adjust width, gap, and dielectric for 50-ohm RF impedance matching.

Transmission Line Corona Loss Simulator

RF & Microwave

Explore the corona discharge that forms around a high-voltage transmission-line conductor and the power loss it causes.

Differential Pair Impedance Calculator — USB / HDMI 100 ohm Routing

RF & Microwave

Compute differential Z_diff, odd-mode and even-mode of an edge-coupled microstrip pair from trace width, spacing, height and Dk — for USB 90 ohm and HDMI 100 ohm PCB design.

Half-Wave Dipole Antenna Simulator

RF & Microwave

Design the half-wave dipole — the most fundamental antenna and the reference against which every other antenna is measured.

Electromagnetic Shielding Effectiveness Calculator — Skin Depth, SE (dB)

RF & Microwave

Calculate electromagnetic shielding effectiveness instantly. Compare materials, thickness, and frequency for skin depth, absorption, reflection, and total SE (dB).

Impedance Matching Simulator — Reflection Coefficient and SWR

RF & Microwave

Interactive impedance matching simulator. Set Z0, complex load ZL and transformer ratio N to compute reflection coefficient, VSWR and power efficiency on a Smith chart.

Wireless Link Budget Calculator (Friis Equation)

RF & Microwave

Calculate wireless link performance with the Friis equation. Compare BPSK vs. 64QAM, factor in rain, and compute power, SNR, margin, and range in real time.

Microstrip Patch Antenna Simulator

RF & Microwave

Design the flat antenna that is simply a rectangle of copper etched onto a printed-circuit board: the microstrip patch antenna.

Microwave Filter Design Tool

RF & Microwave

Design Butterworth, Chebyshev & elliptic microwave filters. Visualize S-parameters & group delay in real-time with this advanced RF design tool.

Microstrip Transmission Line Calculator — Z0, εeff, λ/4 Length

RF & Microwave

Calculate microstrip transmission line impedance, loss, and wavelength. Real-time Z0 analysis and synthesis for RF circuit design.

Microwave Transmission Line Calculator

RF & Microwave

Calculate characteristic impedance for coaxial, microstrip, and stripline. Smith chart visualization with VSWR and return loss.

Cascade Noise Figure (Friis) Simulator

RF & Microwave

Cascade Noise Figure (Friis) Simulator: Compute the total noise figure of a 3-stage RF receiver chain in real time with the Friis formula. Change the gain an…

OFDM Subcarrier Simulator

RF & Microwave

Explore the physical layer of OFDM (orthogonal frequency-division multiplexing), the modulation shared by WiFi, 4G LTE and 5G.

Phased Array Antenna Beam Steering Simulator

RF & Microwave

Phased Array Antenna Beam Steering Simulator: Steer an N-element phased array electronically — without any mechanical motion — by tweaking the per-element ph…

Quarter-Wave Impedance Matching Simulator — Z_T & Bandwidth

RF & Microwave

Quarter-wave impedance matching simulator computes Z_T=sqrt(Z_0*Z_L), the length l=lambda_g/4 and the matching bandwidth from source line, load and design frequency.

Radar Range Equation Simulator

RF & Microwave

Calculate the maximum range at which a monostatic radar can detect a target using the radar range equation.

Reflection Coefficient Simulator — Complex Gamma and Z_in Transform

RF & Microwave

Compute the complex reflection coefficient Gamma from load and characteristic impedance, and visualize its phase rotation along the line with VSWR and input impedance in real time.

Skin Depth (Skin Effect) Calculator

RF & Microwave

Calculate skin depth for conductors with our free online tool. Input frequency, material properties, and get instant results for electrical engineering applications.

Skin Effect Simulator — AC Current Surface Concentration

RF & Microwave

Skin effect simulator: real-time skin depth delta and AC/DC resistance ratio for round conductors from frequency, conductivity, permeability and wire radius.

Smith Chart Simulator — Reflection Coefficient and VSWR

RF & Microwave

Smith Chart Simulator for reflection coefficient and VSWR analysis—visualize normalized impedance, Gamma plane plotting, and transmission line matching.

Single-Stub Matching Simulator

RF & Microwave

A classic microwave-circuit design tool that matches a mismatched load to a transmission line with a single parallel stub.

Third-Order Intercept Point (IP3) Simulator

RF & Microwave

Third-Order Intercept Point (IP3) Simulator: Calculate the third-order intercept point (IP3), the figure of merit for the linearity of amplifiers and mixers.…

Transmission Line · Reflection Coefficient · Impedance Matching Calculator

RF & Microwave

Calculate reflection coefficient, VSWR, return loss, and input impedance in real-time. Visualize results on a Smith chart and standing wave pattern.

PCB Via Inductance Simulator

RF & Microwave

PCB Via Inductance Simulator: A "via" that connects layer to layer in a printed circuit board carries a parasitic inductance that high-speed signals cannot i…

VSWR Simulator — Reflection Coefficient, Standing Wave Ratio and Return Loss

RF & Microwave

The VSWR simulator computes the reflection coefficient, standing wave ratio, return loss and mismatch loss in real time from the line impedance Z_0 and a complex load Z_L.

Rectangular Waveguide Mode Calculator

RF & Microwave

Visualize TE/TM mode fields in rectangular waveguides. Instantly calculate cutoff frequency, guide wavelength, phase velocity, and group velocity.

Wilkinson Power Divider Simulator

RF & Microwave

Design the Wilkinson power divider that splits one RF/microwave signal into two (or combines two into one).