RO4534 occupies a neighboring antenna-design point to RO4533, with a somewhat higher nominal dielectric constant and a distinct thickness offering. It can support a thermoset manufacturing approach for large printed antenna structures, but the practical decision is usually about the complete radiator and feed geometry rather than a small numerical difference in Dk.
Material system
Ceramic-filled hydrocarbon thermoset reinforced with woven glass
Technical properties
| Property | Reported value | Conditions / source |
|---|---|---|
| Process dielectric constant | 3.40 ± 0.08 | Typical, 10 GHz, 23°C; IPC-TM-650 2.5.5.5 clamped stripline; direction is not separately recorded here. Source |
| Dissipation factor | 0.0027 | Typical, 10 GHz, 23°C; IPC-TM-650 2.5.5.5; direction is not separately recorded here. Source |
| Thermal conductivity | 0.6 W/(m·K) | Typical; ASTM C518, 80°C; through-thickness thermal conduction. Source |
Typical reported values are not a purchase specification. Process Dk, design Dk and values measured at different frequencies are not interchangeable.
Selection and design notes
- Investigate it when the desired antenna dimensions or an existing platform align with its dielectric range. Compare phase length and feed widths using a consistent Design Dk source and the exact copper construction.
- When migrating from RO4533, review element resonance, feed discontinuities and coupling together; simply scaling the radiator outline leaves the feed network and manufacturing tolerances unresolved.
Thickness and copper options
Product information includes 20, 32 and 60 mil nominal cores; obtain thickness-specific tolerances before setting antenna dimensions.
Specify ED or an available LoPro construction. The low-roughness choice changes more than a procurement suffix.
Fabrication considerations
- Include panel orientation and thickness controls in antenna drawings. Inspect etch compensation for both narrow feed lines and large radiating patches, since the same panel carries geometries that respond differently to etching and surface preparation.
Application fit
- Printed base-station antennas
- Corporate feed networks
- Microwave radiators
Limits and substitution checks
- Do not treat a laminate PIM example as the acceptance result of a populated antenna. Connectors, joints, finish and contamination remain part of the system. Standard RO4534 is not identified as a flame-retardant grade, and LoPro-specific dielectric changes require their own model.