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Reinforced Polypropylene Compound Ideal Antenna Housing

30 July 2004

RTP Company collaborate with Antenna Plus to develop a Reinforced PP compound for mobile antennas.

Antenna Plus needed a robust housing for its Millennium series of mobile antennas that was strong, impact-resistant and impervious to a wide range of temperatures and weather conditions.

To house the advanced electronics necessary for modern communications, Antenna Plus wanted a robust housing for its Millennium series of mobile antennas that was strong, impact-resistant and impervious to a wide range of temperatures and weather conditions. Most importantly, the housing material had to allow the electromagnetic signal to reach the antenna with minimal loss of strength.

Antenna Plus turned to specialty compounder RTP Company who formulated an RTP 100 Series reinforced polypropylene (PP) compound to meet the requirements. A special UV stabiliser in the PP compound ensures long-term outdoor performance and allows Antenna Plus to meet the UL requirements expected by its customers.

A tailored combination of milled glass and glass beads adds both strength and dimensional stability.

According to Bill Liimatainen of Antenna Plus: ""The material moulds extremely flat for PP, with no warp and an exact, consistent shrinkage"".

""These characteristics allow us to use the same material in many of our products"". He continued: ""We've tested other materials and have yet to see one with the consistency of the RTP Company compound"". ""It extends to both production and long-term performance, allowing for a smooth, efficient manufacturing process"".

Antenna components made of materials with high dielectric constants or dissipation factors cause an increase in the signal loss factor - the amount of energy absorbed and converted to heat by the material.

Generally, conductive materials reflect signal waves; conversely, the low reflective properties of thermoplastics allow the signal to pass to the circuits unimpeded.





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