San-tron Blog: Let's Talk RF Coax

Ruggedizing Coaxial Connectors: To Make the Grade You Have to Take Control

In applications that require the highest electromechanical and environmental performance from their coaxial connections, ruggedized (aka "military-grade") coaxial connectors require a different design and manufacturing approach to ensure signal integrity through the transmission line at all times. A signal transmitted through a "commercial-grade" coax connection can experience nonlinearities and large reflections at the connector when used in extreme conditions. But common problem areas in connectors can be optimized to allow a cable to function at the highest frequencies in high pressure, and highly dynamic environments. Here's how:   Read more...

Distributed Antenna Systems (DAS) Cable Choices

Distributed antenna systems (DAS) are used in a wide variety of public areas to bring wireless service to areas with poor coverage. Some of these areas include: buildings, node installations in towns, underground tunnels, etc. Typically, a large single antenna radiating at high power would provide coverage, but in DAS installations they are replaced with a series of low power antennas to cover the same area as they are safer and more robust. The most expensive and time consuming stage of the DAS process is the installation, routing the coaxial cables around the antennas can be labor intensive. Having the right coaxial cables for the assembly makes the installation a much less strenuous a task. Necessary key features include, but are not limited to: high flexibility, stability in highly dynamic environments, low loss, plenum rated, and good passive intermodulation (PIM) performance.    Read more...

New Haunts for PIM in Distributed Antenna Systems

The Distributed Antenna System (DAS) has, in the last few years, begun to prove all of the claims made for it, like ubiquitous coverage in huge stadiums and multi-stadium events and delivering wireless capacity where it could never be achieved before. These installations are truly incredible feats of engineering, planning, and installation, and they all have one thing in common: the need to maintain low levels of Passive Intermodulation Distortion (PIM).   Read more...

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