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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 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.

About the Author

Nancy Friedrich | RF Product Marketing Manager for Aerospace Defense, Keysight Technologies

Nancy Friedrich is RF Product Marketing Manager for Aerospace Defense at Keysight Technologies. Nancy Friedrich started a career in engineering media about two decades ago with a stint editing copy and writing news for Electronic Design. A few years later, she began writing full time as technology editor at Wireless Systems Design. In 2005, Nancy was named editor-in-chief of Microwaves & RF, a position she held (along with other positions as group content head) until 2018. Nancy then moved to a position at UBM, where she was editor-in-chief of Design News and content director for tradeshows including DesignCon, ESC, and the Smart Manufacturing shows.