RF probe

An RF probe, or radio frequency probe, is a specialized type of probe used to make electrical measurements in electronic circuits and devices operating at radio frequencies (RF). Unlike standard multimeter probes designed for DC and low-frequency AC signals, RF probes are specifically designed to minimize signal degradation and accurately capture high-frequency signals.

RF probes typically employ a low-capacitance and high-impedance input to minimize loading effects on the circuit under test. Loading effects occur when the probe's inherent capacitance and resistance alter the behavior of the circuit being measured, leading to inaccurate readings. Minimizing these effects is crucial for accurate RF measurements.

RF probes are used with various test equipment, including oscilloscopes, spectrum analyzers, and network analyzers. They are essential tools for engineers and technicians involved in the design, development, testing, and repair of RF circuits and systems. Common applications include measuring signal levels, frequency response, and impedance characteristics in devices such as amplifiers, filters, oscillators, and antennas.

Different types of RF probes exist, categorized by their construction, frequency range, and impedance characteristics. Some are designed for general-purpose measurements, while others are specialized for specific applications, such as probing microstrip lines or surface mount components. The choice of RF probe depends on the specific requirements of the measurement being performed.