How to Characterize Pulsed RF Signal Power

+ Peak Power Meter

Characterize Time-Gated Pulsed RF Power

Pulsed radio frequency (RF) power characterization requires a power meter, an appropriate peak and average power sensor, and a measurement connection to the signal under test. The measurement system samples the changing RF power envelope so that measurements can be positioned within defined portions of the pulse rather than averaged across the complete signal period. A time gate establishes the interval over which the meter calculates the selected power parameter. Triggering synchronizes acquisition with the pulse, while gate placement determines which portion of the waveform contributes to the result. Engineers can configure the measurement interval to examine the pulse independently from intervals between pulses and other portions of the repeating signal envelope.

Once the pulsed waveform is acquired, measurements within the selected gate can determine peak power, average power, and the relationship between peak and average levels. Multiple gates can be positioned at different locations in the waveform when measurements need to compare separate regions of the pulse or characterize changes in power over its duration. Time-referenced sampling also supports measurements such as pulse droop by comparing power levels at selected positions within the pulse envelope. The measurement process therefore combines trigger control, digital sampling, gate placement, and power calculations. Results are derived from the samples contained within each configured measurement interval, allowing specific portions of a repetitive RF pulse to be characterized independently.

Pulsed RF Power Characterization Solution

Characterizing pulsed radio frequency (RF) power requires synchronized sampling of the RF envelope and measurement gates positioned over the portions of the pulse being evaluated. Keysight PM2 peak power meters and an appropriate peak and average power sensor acquire the time-varying power envelope and calculate measurements within user-defined gates. The measurement configuration supports peak power, average power, and peak-to-average measurements within a selected interval. Trigger and gate controls align the calculations with specific regions of a repetitive pulse. Multiple measurement gates can also be used to evaluate different sections of the waveform, supporting time-referenced measurements such as changes in power across the pulse.

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