What is a peak power meter?

A peak power meter measures the instantaneous power of an RF or microwave signal over time. Unlike average power meters, which provide a single scalar value averaged over a measurement interval, peak power meters capture time-domain profiles of the signal, including peak power, pulse characteristics, and transient behavior. Peak power meters use high-speed sampling and wide video bandwidth sensors to accurately reconstruct the power envelope of modulated or pulsed signals. They digitize the signal envelope at high resolution to detect rapid power variations. Peak power meters typically rely on sensors with fast rise times and sufficient dynamic range to measure signals from a few nanowatts to several watts.

What types of measurements do peak power meters make?

Peak power meters can perform peak, average, peak-to-average ratio, and time-gated power measurements. Some power meters also support rise time, fall time, pulse width, and statistical measurements. These measurements go far beyond simple average or peak readings, enabling detailed analysis of complex and pulsed RF/microwave signals. Key peak power meter measurement capabilities include the following: 1. Peak power captures the highest instantaneous power level in a waveform critical for testing amplifiers, transmitters, and systems operating near their linearity limits 2. Average power (time-gated or burst-aware) measures the mean power within a user-defined time gate useful for modulated signals or pulse trains where average power over the entire waveform would be misleading 3. Crest factor (peak-to-average ratio) ratio of peak power to average power important for identifying signal compression, amplifier distortion, and headroom in modulated systems

What applications are peak power meters suitable for?

Peak power meters are ideal for various applications, including RF and microwave testing, wireless communication, radar, and electronic warfare, where accurate peak power measurements are critical. These meters are used in research and development, production testing, and field measurements to ensure the performance and reliability of electronic systems. They are also suitable for applications such as signal characterization, power amplifier testing, and antenna measurements. Their versatility, accuracy, and advanced measurement capabilities make them valuable tools for engineers and technicians working in different industries. The following are some examples of real-world applications where peak power meters are used: 5G NR and WLAN Testing accurately capture and measure peak-to-average power ratio in OFDM-based waveforms time-gated measurements isolate the power of individual resource blocks or bursts Radar Systems capture short-duration pulses with high fidelity and measure pulse shaping, jitter, or intrapulse modulation detect and characterize chirp linearity or stepped-frequency behavior when paired with time gating Satellite Communication monitor power levels of wideband digital carriers in real time identify compression effects or signal clipping under high back-off or multicarrier operation Electronic Warfare (EW) analyze fast, unpredictable pulse patterns used in jamming or deception capture low-duty-cycle, wideband bursts with sub-microsecond resolution

Peak Power Meters

Peak, average, and time-gated power measurements

Keysight PM2-class peak power meters include the E4410A Series, N8262A, and N1910A Series power meters. They offer capabilities suitable for complex pulse and modulated RF signals. These meters provide peak, average, peak-to-average ratio, and time-gated measurements, as well as built-in presets, making them ideal for pulse and wireless formats like Time Division Multiple Access (TDMA), Bluetooth®, LTE, and 5G. Our midrange and modular peak power meters provide a high sampling rate of 100 MSa/s, ideal for capturing fast transients for accurate system and performance analysis. A compatible peak power sensor is required for operation to capture and convert fast-changing RF signals into precise, time-resolved measurements. Choose one of our most popular configurations or configure one specific to your application. Need help selecting? Check out the resources below.

High video bandwidth

Capture fast transients, complex modulations, and precise pulse details with video bandwidths from 5 to 30 MHz.

Predefined wireless formats

Streamline measurement setup, improve accuracy, and ensure compliance with built-in presets for wireless standards like TDMA, Bluetooth®, LTE, and 5G.

Comprehensive insights

Perform detailed power measurements, including peak, average, peak-to-average ratio, and time-gated power — for in-depth signal analysis and characterization.