Insulated Wire (IW) has introduced what the company says are the lowest attenuation, phase stable coaxial cable assemblies operating to 40 GHz. The 157 series uses a solder-clamped 2.92 mm K connector, tailored for applications through Ka-Band, including satellite communications, probe stations and the full range of test and measurement setups.
The 157 series uses the same construction as all of IW’s low loss cables: laminated EPTFE with a silver-plated copper foil and silver-plated copper braid. Cable diameters were optimized to minimize attenuation, with a maximum of 64 dB per 100 ft (2.09 dB per m) at 40 GHz. A typical 157 cable assembly with two straight 2.92 mm connectors has less than 1.1:1 VSWR, peaking around 1.2:1 above 30 GHz, versus a specification of 1.35:1. Other performance characteristics are a time delay of 1.22 ns per ft, nominal propagation velocity (Vp) of 83 percent and bend radius of 0.5 in.
Options include a solid center conductor (part number 1571) and IW’s “TufFlex” ruggedized version (part number 1573). The ruggedized model has a crush resistance of approximately 175 lb per in. The outer diameter of the 1571 is 0.157 in., 0.209 in. for the 1573.
Founded in 1970, IW developed a unique PTFE lamination process and applied it to manufacturing wire and cable. Combining the lamination process with a patented shield design led IW to develop low loss microwave transmission lines using solid and expanded PTFE dielectrics.
Insulated Wire Inc.
Bayport, N.Y.
www.iw-microwave.com