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High-frequency test probes
24 February 2016, Test & Measurement
High-frequency technology today pervades many industries, such as automotive, radio, antenna and medical. The testing of RF products is often a manual, time consuming procedure with plug and jack. PTR’s high-frequency test probes enable these testing times to be significantly reduced, in addition to their requirement for lower insertion and extraction forces.
The probes consist of sprung inner and outer conductors that are arranged coaxially to one another. This arrangement is optimal for the transmission of high-frequency signals because the electromagnetic field that is required to transport the energy is restricted to the area between the inner and outer conductors. The advantage is that electromagnetic emissions and parasitic inductance are effectively suppressed.
Specially matched geometric relationships and high precision in manufacture allow the transmission of high-frequency signals with low emissions and losses. For that reason the high-frequency test probes of the 7860/7840 series are matched to suit high-frequency systems with an impedance of 50 Ω.
In the same way, the geometry and dimensions of the probe heads of the inner and outer conductors are also designed to suit the relevant test piece. High-frequency test probes are compact, space-saving and solid, and their modular construction allows the inner and outer conductors to be changed.
High-frequency test probes are available in both plug-in and screw-type form for use when subjected to disturbing forces that act axially (vibration, impacts and the like). For both types there are matching receptacles that allow fast and secure installation and can be changed easily.
The probes have a practical connecting bush for connection to a test system, permitting quick contact creation through standardised MCX miniature plugs, and without soldering or other complicated procedures. These MCX plugs are available ready assembled with a flexible high-frequency cable of the Multiflex type, at the end of which an SMA cable plug, for example, is connected. |
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