This week at the IEEE International Microwave Symposium in Fort Worth, Texas, microwave frequency coaxial cable manufacturer Semflex, a wholly owned subsidiary of Stratos International, introduced a new class of microwave cable that delivers good attenuation characteristics. In fact, according to Semflex, this low loss double-shielded cable provides the best combination of low attenuation and phase stability. The new SLA series builds on the technology developed for the company's LA290 cable. Suited for instrument-grade applications such as PNA/VNA testing and phase critical applications such as ECM and radar, this series is specifically matched to the maximum frequency ranges of popular connectors such as N type, SMA, 2.92 mm, and 1.85 mm.

The low attenuation characteristic of the new 50-Ohm cable series is accomplished with the use of silver-plated inner and outer conductors and microporous dielectric PTFE material. Furthermore, low loss, phase stability and shielding effectiveness of >100 dB result from combining a helically served flat braid with a second shield of 97 percent minimum coverage round braid. Additional performance characteristics include low loss of 19.5 dB/100 ft at 18.0 GHz with outstanding phase and temperature stability. Operating temperature range is -65°C to 200°C. Pricing ranges from $3.89/ft to $13.26/ft depending on size and quantity. The SLA series cable is stocked and available for immediate delivery on bulk reels.