Electromagnetics & Circuits

RF & Microwave Simulators

A focused Electromagnetics & Circuits hub for rf & microwave tools, keeping related formulas, assumptions, and engineering checks together.

35 simulators

Adjacent categories

Controls & Robotics Energy Systems Optics & Photonics Classical Physics

Simulator list

Antenna Array Beamforming Calculator

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

Antenna Basics · Dipole Antenna Calculator compares how electromagnetic, circuit, and transmission conditions shifts as the main assumptions change.

Friis Transmission Equation Simulator

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

Antenna Gain & Directivity Simulator — Friis Transmission Equation

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

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

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

Resistive Attenuator Pad Simulator

Resistive Attenuator Pad Simulator compares how nearby design assumptions and key metrics shifts as the main assumptions change.

Branch-Line Coupler Simulator

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

Coaxial Cable Impedance Calculator — Z_0 and Propagation Speed

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 co…

Coplanar Waveguide (CPW) Simulator — Characteristic Impedance Z_0

Coplanar waveguide simulator calculating characteristic impedance Z₀ using Wheeler/Hilberg approximation.

Transmission Line Corona Loss Simulator

Transmission Line Corona Loss Simulator focuses on nearby design assumptions and key metrics, giving a compact read on the current case and the trend that matters next.

Differential Pair Impedance Calculator — USB / HDMI 100 ohm Routing

Differential Pair Impedance Calculator — USB / HDMI 100 ohm Routing focuses on electromagnetic, circuit, and transmission conditions, giving a compact read on the curren…

Half-Wave Dipole Antenna Simulator

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

Impedance Matching Simulator — Reflection Coefficient and SWR

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)

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

Microstrip Patch Antenna Simulator focuses on electromagnetic, circuit, and transmission conditions, giving a compact read on the current case and the trend that matters…

Microwave Filter Design Tool

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

Calculate microstrip transmission line impedance, loss, and wavelength.

Microwave Transmission Line Calculator

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

Cascade Noise Figure (Friis) Simulator

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

OFDM Subcarrier Simulator

OFDM Subcarrier Simulator focuses on nearby design assumptions and key metrics, giving a compact read on the current case and the trend that matters next.

Phased Array Antenna Beam Steering Simulator

Phased Array Antenna Beam Steering Simulator focuses on member deformation, stress, and support assumptions, giving a compact read on the current case and the trend that…

Quarter-Wave Impedance Matching Simulator — Z_T & Bandwidth

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

Radar Range Equation Simulator compares how nearby design assumptions and key metrics shifts as the main assumptions change.

Reflection Coefficient Simulator — Complex Gamma and Z_in Transform

Reflection Coefficient Simulator — Complex Gamma and Z_in Transform compares how nearby design assumptions and key metrics shifts as the main assumptions change.

Skin Depth (Skin Effect) Calculator

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

Skin Effect Simulator — AC Current Surface Concentration

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

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

Single-Stub Matching Simulator

Single-Stub Matching Simulator focuses on nearby design assumptions and key metrics, giving a compact read on the current case and the trend that matters next.

Third-Order Intercept Point (IP3) Simulator

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

Transmission Line · Reflection Coefficient · Impedance Matching Calculator

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

PCB Via Inductance Simulator compares how electromagnetic, circuit, and transmission conditions shifts as the main assumptions change.

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

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

Rectangular Waveguide Mode Calculator

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

Wilkinson Power Divider Simulator

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

About this category

Browser-based RF & Microwave tools for rf & microwave tools, keeping related formulas, assumptions, and engineering checks together — free, no signup, with real-time results, formulas, and worked examples. Use the list above, the search box, or the adjacent categories to pick a simulator.