RF Engineering Tool
Rogers RT/Duroid 5880 RF Calculator
Compute characteristic impedance Z0, effective dielectric constant, guided wavelength and loss for microstrip, stripline and coplanar waveguide on RT/Duroid 5880. Real-time results, Z₀-vs-width chart, CSV / JSON export.
Material Properties
Designing for Rogers 5880? AtlasPCB fabricates controlled-impedance RF boards with TDR verification — from 1 piece.
Get Instant QuoteRogers 5880 Design Calculator
Select a mode, pick your substrate thickness, and results update instantly. Switch to synthesis mode (microstrip) to find the trace width for a target Z₀.
Standard Substrate Thickness
Input Parameters
Calculated Results
Z₀ vs Trace Width — 0.787 mm substrate · εr = 2.2
Design verified? AtlasPCB builds Rogers 5880 boards with engineer review, ±8% impedance tolerance and TDR on every order.
Get Instant QuoteThe Physics
How transmission-line impedance is calculated
Characteristic impedance depends on the electromagnetic field distribution around the conductor. Each geometry is modelled by a different closed-form approximation calibrated against measured data.
Microstrip
Outer-layer trace over one reference plane. Uses the Hammerstad-Jensen synthesis / analysis formula. Effective εr is lower than the substrate εr because the fringing fields extend into air above the trace.
εeff ≈ (εr+1)/2 + (εr-1)/2 · F(W/h)Stripline
Inner-layer trace centered between two reference planes. Fully embedded in dielectric, so εeff = εr. Better shielding than microstrip; uses Wadell closed-form with copper-thickness correction.
Z₀ = 30π / (√εr · (W_eff/b + 0.441))Grounded CPW
Trace with ground pours on each side on the same layer, plus a reference plane below. Gap s to side grounds is the key tuning variable. Uses Schneider/Gevorgian elliptic-integral approximation.
Z₀ = 30π / (√εeff · K(k)/K'(k))Quick Reference
50 Ω microstrip width by substrate thickness
RT/Duroid 5880 (εr = 2.20), 1 oz copper (35 µm), Hammerstad-Jensen formula. For other impedances or copper weights, use the calculator above.
| Substrate (h) | Trace Width (mm) | Trace Width (mil) | Typical Max Freq |
|---|---|---|---|
| 0.127 mm (5 mil) | 0.38 | 15 | 77 GHz |
| 0.254 mm (10 mil) | 0.78 | 31 | 40 GHz |
| 0.381 mm (15 mil) | 1.17 | 46 | 30 GHz |
| 0.508 mm (20 mil) | 1.56 | 61 | 24 GHz |
| 0.787 mm (31 mil) | 2.41 | 95 | 18 GHz |
| 1.575 mm (62 mil) | 4.82 | 190 | 10 GHz |
| 3.175 mm (125 mil) | 9.70 | 382 | 6 GHz |
Values are approximate — manufacturing etch, solder mask and glass-weave shift results. TDR-verify production boards.
Applications
Typical Rogers 5880 applications
Satellite Communications
LNBs, transponders and phased arrays — 10 to 40 GHz
10–40 GHz5G mmWave
Beamforming antenna arrays and front-end modules
24–39 GHzRadar Systems
Automotive ADAS and military AESA radar
1–77 GHzTest & Measurement
High-precision fixtures and calibration standards
DC–110 GHzAerospace & Defense
Avionics, EW and airborne sensor systems
1–94 GHzPoint-to-Point Links
Microwave backhaul and wireless bridges
6–80 GHzRogers RT/Duroid 5880 FAQ
Common questions about the material and this calculator.
What is Rogers RT/Duroid 5880 and why is it used for high-frequency PCBs?
Rogers RT/Duroid 5880 is a PTFE-based microwave laminate with εr = 2.20 and tan δ = 0.0009 at 10 GHz — among the lowest loss commercially available. It handles frequencies beyond 77 GHz, making it essential for satellite, radar, 5G mmWave and precision RF circuits.
How accurate is this Rogers 5880 impedance calculator?
The microstrip / stripline modes use IPC-2141 / Hammerstad-Jensen approximations (typically ±2–3% vs field solver). CPW uses Schneider–Gevorgian elliptic integrals. For production boards AtlasPCB TDR-verifies every controlled-impedance panel.
What trace width gives 50 Ω on Rogers 5880?
On the standard 0.787 mm (31 mil) substrate with 1 oz copper, a 50 Ω microstrip is about 2.4 mm wide. Use the synthesis mode to compute exact values for your thickness and copper weight.
Can AtlasPCB fabricate controlled-impedance boards on Rogers 5880?
Yes. We fabricate Rogers 5880 RF boards with ±8% impedance tolerance, TDR-verified on every board. We support all standard thicknesses from 0.127 to 3.175 mm, mixed Rogers/FR-4 stackups, and 1-piece MOQ.
Ready to build your Rogers 5880 design?
Upload your Gerber files and get an engineer-reviewed quote — including stackup recommendation and impedance control — in under 24 hours.