Triple-Shielded Cable Assemblies Cut Losses

Feb. 26, 2009
To provide superior RF isolation, a line of coaxial test cable assemblies are triple shielded. Compared to RG-style cable, a stainless-steel outer braid claims to provide higher pull strength and lighter weight. The cable assemblies typically exhibit ...

To provide superior RF isolation, a line of coaxial test cable assemblies are triple shielded. Compared to RG-style cable, a stainless-steel outer braid claims to provide higher pull strength and lighter weight. The cable assemblies typically exhibit voltage standing wave ratio (VSWR) of 1.30:1 at 26.5 and 40.0 GHz and 1.25:1 at 18 GHz. At 26.5 GHz, amplitude stability is less than 0.1 dB for 200 flexes (180 deg. in one place around a 2-in. radius). The 50-Ohm 32027, for example, boasts 70.3-percent velocity, 29.2 pF capacitance, and a bend radius of 2 in. Weight per 100 ft. is at least 2.8 lbs while the connector pull test was measured at 50 lbs. Its sibling, the 50-Ohm 32026, flaunts 76-percent velocity and capacitance of 27.2 pF with a 2-in. bend radius. Weight per 100 ft. is at least 4.2 lbs.