High-Frequency / RF PCB
RF and High-Frequency PCBs Engineered for Signal Integrity
Rogers 4003C, 4350B, and Teflon substrates with impedance control to +/-3%. Purpose-built for 5G, satellite, radar, and millimeter-wave applications.
Key Advantages
Why Choose Our RF PCB Manufacturing
Ultra-Low Dielectric Loss
Rogers 4350B loss tangent of 0.0037 at 10GHz. 10x lower than standard FR-4 at high frequencies. Critical for maintaining signal integrity in mmWave applications above 24 GHz.
Tight Impedance Control
±3% impedance tolerance on Rogers substrates. ±5% on hybrid Rogers/FR-4 stackups. TDR-verified with full measurement reports included with every controlled impedance order.
Broad Frequency Support
Proven designs from 1 GHz to 77 GHz. Material selection optimized for your specific frequency band and performance requirements, from WiFi 6E to automotive radar.
RF Design Expertise
Engineering support for impedance modeling, stackup optimization, and hybrid material selection. We help translate your RF simulation to manufacturable designs with verified performance.
Technical Specifications
High-Frequency PCB Material Options
Material Specifications
Substrate selection is the most impactful decision in RF PCB design. We stock Rogers 4003C and 4350B for standard lead times and source RT/duroid and Teflon PTFE for advanced designs with verified material traceability.Rogers 4003C (Dk=3.38)
Loss tangent 0.0027 at 10 GHz. Excellent for designs up to 40 GHz. Compatible with standard FR-4 processing. Most cost-effective Rogers option.
Rogers 4350B (Dk=3.48)
Loss tangent 0.0037 at 10 GHz. UL 94 V-0 rated. The industry standard for commercial RF boards. Thermoset resin system compatible with lead-free assembly.
RT/duroid 5880 (Dk=2.20)
PTFE-based with glass microfiber reinforcement. Loss tangent 0.0009 at 10 GHz. Premium material for phased array antennas and millimeter-wave above 40 GHz.
Teflon PTFE (Dk=2.10)
Ultra-low loss for the most demanding mmWave applications. Loss tangent below 0.001. Requires specialized processing — not compatible with standard FR-4 fabrication steps.
Dielectric Constant Tolerance
±0.05 for Rogers materials across the production lot. Verified by the laminate manufacturer with CoC documentation. Critical for repeatable impedance in production volumes.
Design Structures and Finishes
Hybrid stackups, shielding structures, and surface finish selection work together to deliver predictable RF performance. We verify every impedance structure against your simulation targets before production.Hybrid Stackups (Rogers + FR-4)
Rogers signal layers bonded with FR-4 structural layers. Reduces cost by 40-60% vs all-Rogers stackups while maintaining RF performance on critical layers. Requires careful Dk matching at boundaries.
Controlled Impedance Structures
Microstrip, stripline, grounded coplanar waveguide (GCPW), and edge-coupled differential pairs. 2D field solver modeling provided for each impedance structure in your stackup.
Edge-Plated RF Shielding
Plated board edges create a Faraday cage when combined with ground planes. Essential for module-level EMI containment on RF front-end boards.
Via Fencing for Isolation
Ground via arrays on λ/10 spacing along RF traces prevent surface wave coupling between channels. Automated via fencing generation supported in DFM review.
Surface Finishes for RF
ENIG (standard for RF): consistent, flat surface. Immersion silver: lowest insertion loss at microwave frequencies. OSP: budget option for lower frequencies. HASL not recommended for RF due to surface roughness.
Applications
Where High-Frequency PCBs Are Essential
Massive MIMO antenna arrays, beamforming networks, power amplifier modules, and filter banks operating from sub-6 GHz to mmWave bands.
Low-noise amplifiers, frequency converters, phased array feeds, and transponder modules for LEO, MEO, and GEO satellite systems.
Automotive 77 GHz radar front-ends, marine radar, weather radar, and defense surveillance radar with stringent isolation and loss requirements.
Access points, client adapters, and mesh nodes operating in the 6 GHz band where low-loss substrates improve range and throughput.
24 GHz to 77 GHz front-end modules for automotive, industrial sensing, and 5G FR2 applications requiring PTFE or high-performance laminates.
RF power combiners, cavity filter boards, transmitter driver stages, and antenna feed networks for FM, TV, and digital broadcasting.
Design Guidelines
DFM Best Practices for High-Frequency PCBs
Impedance Calculation
50Ω single-ended and 100Ω differential are standard targets. Use 2D field solvers (not approximation formulas) for Rogers materials — Dk variation with frequency matters. Always specify impedance at your operating frequency.
RF Trace Routing
Avoid 90° bends — use 45° miters or curved traces. Maintain continuous ground reference under all RF traces. Match trace lengths for differential pairs to within 1mil. Keep RF traces away from board edges by 3x trace width.
Ground Plane Continuity
No splits or slots under RF traces. Use via stitching along RF paths at λ/20 spacing. If a ground plane must be interrupted, add stitching vias to create a bridge across the gap.
Via Fencing for Isolation
Place ground vias on 1/10 wavelength spacing for isolation between RF channels. Minimum 2 rows of vias for >40 dB isolation. Connect via fences to ground planes on both sides.
FAQ
Common Questions About High-Frequency PCBs
When should I use Rogers instead of FR-4?
FR-4 works adequately below 1 GHz for most designs. Between 1-6 GHz, FR-4 may work if loss budget is generous, but Rogers provides better consistency. Above 6 GHz, Rogers or equivalent PTFE-based laminates are strongly recommended. Above 24 GHz, FR-4 is not viable.
Can you mix Rogers and FR-4 in one board?
Yes. Hybrid stackups place Rogers on the RF signal layers and FR-4 on structural and digital layers. This reduces material cost by 40-60% while maintaining full RF performance where it matters. We verify bonding compatibility and thermal expansion matching in the DFM review.
What impedance tolerance do you guarantee?
±3% on all-Rogers stackups, ±5% on hybrid Rogers/FR-4, and ±8% on FR-4-only controlled impedance. These tolerances are verified by TDR measurement on test coupons fabricated on the same production panel as your boards.
Do you provide impedance test reports?
Yes. Every controlled impedance order includes a TDR measurement report showing actual impedance values on test coupons. For critical RF designs, we can also provide insertion loss measurements and phase-matched data upon request.
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