Coaxial Test Probes Ease Microwave Circuit Design

17 June 2016

Pasternack has introduced a line of semi-rigid test probes designed to assist in testing microwave circuits. By soldering the outer conductor to the signal ground, and the exposed center conductor to the trace carrying the signal of interest, sampling measurements with these probes can be made without having to create a separate subassembly circuit board or add a connector to the circuit layout, which can take up valuable real estate.

Semi-rigid test probes. Source: Pasternack   Semi-rigid test probes. Source: Pasternack

The test probes are offered in three different diameters of semi-rigid coax, including 0.02 in. (0.51mm), 0.034 in. (0.86mm) and 0.047 in. (1.19mm). All test probe cable assemblies are 100% RF tested to ensure the cable assemblies operate to a maximum frequency of 6 GHz and to also ensure the SMA connector interface meets the 1.35:1 VSWR specification prior to shipping. These assemblies come in 3, 6, 9 and 12-inch lengths and are designed to fit various trace widths and applications. The probes are also terminated with female SMA connectors.

The probes come in two versions, including straight-cut probe ends for those who would like to customize the dimensions of the center conductor and dielectric dimensions, as well as pre-stripped probe ends (also called pig tail) that are ready for immediate use and do not require any additional stripping. 

The probes are in stock and available for same-day shipping.

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