Microstrip

Microstrip RF Calculator is an offline engineering toolkit for PCB, RF, and microwave transmission-line work. Build quick first-pass numbers for microstrip and stripline geometry, impedance, phase, propagation delay, fringing effects, bends, gap coupling, current crowding, and attenuation directly on iPhone and iPad.

Designed for engineers who need useful calculations at the bench, in the lab, during layout review, or away from a network connection. Enter stackup and trace values such as frequency, dielectric constant, substrate height, trace width, copper thickness, length, loss tangent, conductivity, roughness, phase budget, and layout limits. Results are calculated locally and can be copied or shared as a clean report.

Geometry tools:
- Microstrip Line Calculator: back-solve trace width and physical length from target impedance and electrical length.
- Microstrip Impedance Solver: calculate characteristic impedance, effective dielectric constant, W/H ratio, guided wavelength, delay, and physical length.
- Stripline/Microstrip Delay & Velocity Calculator: compare propagation velocity, delay per mm, total delay, guided wavelength, and electrical phase for microstrip or stripline assumptions.

Effects tools:
- Microstrip Corner Current Crowding Estimator: estimate current-density lift, peak current density, crowding factor, and suggested inside radius.
- Microstrip Gap-Coupling Back-Solver: solve a first-pass edge gap from target voltage coupling, coupled length, and available layout space.
- Microstrip Mitered-Bend Compensation Estimator: estimate miter ratio, miter cut, residual phase, and phase removed for 90-degree and comparable bends.
- Microstrip Open-End Fringing Length Estimator: estimate fringing extension per open end and recommended physical trim for stubs or resonators.
- Microstrip Loss & Attenuation Estimator: estimate conductor attenuation, dielectric attenuation, roughness factor, skin depth, total attenuation, and insertion loss.

Validation tool:
- EM Microstrip Edge Fringing Phase Bias Estimator: screen phase bias from edge or etch width bias and compare it against a target phase budget.

Built for mobile RF work:
- Offline calculations, no account required.
- Local calculation history for previous runs.
- Clear PASS, WATCH, BLOCKED, and INFO result states.
- Copy and share generated reports.
- Native iPhone and iPad interface.

This app provides engineering estimates for design screening and layout review. Final RF, microwave, and high-power designs should still be verified with stackup-aware EM simulation, manufacturing data, and measurement.

Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/