RO4725JXR™ and RO4730G3™ are high-performance antenna-grade laminates specifically engineered for wireless infrastructure, automotive radar, and other RF/microwave antenna applications. These laminates deliver exceptional electrical performance, low loss, and outstanding environmental durability, making them ideal for cost-sensitive, high-volume applications.
Key Features
- Stable Dielectric Constant (Dk):
- Enables predictable and repeatable antenna designs.
- Low Loss Performance:
- Reduced dissipation factor (Df) ensures minimal signal degradation.
- Environmental Robustness:
- Low moisture absorption and excellent resistance to harsh conditions.
- Cost-Effective Processing:
- Compatible with standard FR-4 PCB manufacturing processes.
Material Properties
| Property | RO4725JXR™ | RO4730G3™ |
|---|---|---|
| Dielectric Constant (Dk) | 2.55 ± 0.05 | 3.00 ± 0.05 |
| Dissipation Factor (Df) | 0.0021 @ 2.5 GHz | 0.0023 @ 2.5 GHz |
| Thermal Conductivity | 0.50 W/m·K | 0.50 W/m·K |
| Moisture Absorption | <0.1% | <0.1% |
| Thermal Decomposition (Td) | 390°C | 390°C |
| Glass Transition Temperature (Tg) | >280°C | >280°C |
| Peel Strength | ≥7 lb/in | ≥7 lb/in |
Applications
- Patch antennas for cellular and GPS systems
- Automotive radar sensors
- Base station antennas
- IoT devices and RF modules
Processing Guidelines
1. Drilling and Hole Formation
- Use carbide or diamond-coated drill bits.
- Clean holes using plasma or chemical processes to remove debris.
2. Etching and Plating
- Compatible with standard copper etching and plating techniques.
- Maintain precise control for accurate feature dimensions.
3. Lamination
- Laminate at temperatures of 425–450°F (220–230°C) under pressures of 200–400 psi.
4. Solder Mask and Surface Finishes
- Use compatible solder masks designed for high-frequency laminates.
- Surface finishes include ENIG, immersion silver, and OSP.
Performance Highlights
- Low Dielectric Loss:
- Ensures high efficiency and long range in antenna systems.
- Thermal Stability:
- Supports high-power applications and extended operating temperatures.
- Dimensional Stability:
- Minimizes warpage during fabrication and operation.
- Moisture Resistance:
- Low absorption enhances reliability in outdoor or humid conditions.
Benefits
- Enhanced Performance: Stable and predictable RF behavior.
- Cost Efficiency: Optimized for large-scale manufacturing.
- Durability: Withstands harsh environments for extended operational lifespans.
Available Configurations
- Thickness Options: Multiple thicknesses are available for tailored design flexibility.
- Copper Cladding: Various weights of rolled or electrolytic copper are offered.
RO4725JXR™ and RO4730G3™ laminates are the ideal materials for high-performance antenna applications. Their combination of low loss, environmental durability, and cost-effective processing make them a leading choice for RF and microwave engineers.
