RF PCB Board - RF motherboard

RF Motherboard (Radio Frequency Motherboard) is the critical core of high-frequency electronic systems, engineered to deliver exceptional signal integrity in 300MHz–100GHz applications. 

Unlike standard PCBs,it’s optimized for low loss, precise impedance control, and stable performance—making it indispensable for 5G, automotive radar, and satellite communication.

Key Advantages of Our RF Motherboard

Ultra-Low Signal Loss: Built with high-performance substrates (Rogers RO4350B, Taconic RF-35, ceramic-filled PTFE composites) featuring ultra-low dissipation factor (Df=0.0002–0.0037 @10GHz). 

This minimizes insertion loss to ≤0.2dB/cm, even at millimeter-wave frequencies (＞12GHz).Precise Impedance Control: ±4.5% tolerance for microstrip/stripline designs, validated via 3D EM simulation and TDR testing. 

Ensures no signal reflection, critical for 5G Massive MIMO and 77GHz automotive radar.

Wide Frequency Compatibility: Covers 300MHz to 100GHz, including 5G FR1 (sub-6GHz), FR2 (26–40GHz), automotive radar (77/81GHz), and satellite Ka-band (26.5–40GHz).

Durable & Reliable: Operates in -40℃~+85℃ (industrial grade) with 5%–95% RH resistance (non-condensing). 

Meets UL 94 V-0 flame retardancy and IPC-6018D standards—trusted for automotive and aerospace use.

RF motherboard

Our RF Motherboard adapts to diverse requirements:

Layers: 4–24 layers (8-layer for 5G small cells, 16-layer for satellite terminals).

Thickness: 1.2mm–3.0mm (thicker options for high-power amplifiers, thinner for compact IoT devices).

Copper Thickness: 1oz (signal layers) to 4oz (high-power modules) with 2oz standard for power/ground layers.

Surface Finishes: Immersion Silver (best for ＞12GHz) or ENIG (ideal for ≤12GHz) with plasma treatment for PTFE adhesion (peel strength ≥1.8N/mm).

Applications Across Industries

5G Communication: 5G macro/small base stations (RF front-ends) and user equipment.

Automotive Electronics: 77/81GHz ADAS radar (blind spot detection, adaptive cruise).

Satellite & Aerospace: Low-orbit satellite (LEO) terminals and aerospace radar systems.

Industrial & Medical: IIoT radar sensors (level measurement) and MRI signal processing modules.

Technical Information

Product: RF Motherboard (Radio Frequency Motherboard)

Material: Rogers RO4350B, Taconic RF-35, ceramic-filled PTFE composites (customizable)

Frequency Range: 300MHz–100GHz

Quality Standard: IPC-6018D, IPC 6012 Class 2/3, UL 94 V-0; optional IATF 16949 (automotive)

Dielectric Constant: 2.2–3.5 @10GHz (±0.03–±0.05 tolerance)

Layers: 4–24 layers (custom stackup)

Thickness: 1.2mm–3.0mm

Copper Thickness: 1oz (signal), 2oz (power/ground); up to 4oz (high-power)

Surface Technology: Immersion Silver (＞12GHz), ENIG (≤12GHz), OSP

Special Requirements: ±4.5% impedance control; blind/buried vias; -40℃~+85℃ operation

Application: 5G, automotive radar, satellite communication, industrial IoT, medical devices