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Numerical Parameters Analysis of Boonton 4540 Peak Power Meter

The Boonton 4540 series RF peak power meters consisting of the 1-channel 4541 and the 2-channel 4542 provide one of the most versatile power measuring systems with the capability of making over 20 different power related measurements on captured signals. The 4540 power meter can be operated with Boonton peak, CW power sensors, and voltage probes and can function as a CW and Peak power meter, statistical power analyzer and RF voltmeter. The instrument provides three basic power measurements – pulse power, modulated power and statistical power. Each mode is targeted towards a specific type of measurement which can be displayed both graphically and numerically.

4500B Advanced Trigger Capabilities

Pulsed signals used for radar, remote sensing and tracking, MRI medical imaging, and certain wireless communication applications such as WiMax & LTE have become increasingly complex to measure. The instruments used to measure these signals must have sufficient capability to account for synchronization changes within a burst of pulses to capture a specific region and measure the signal accurately. A Peak power meter with advanced trigger capabilities is an excellent tool for this purpose.

Boonton 4500B and the Trailing Edge Characteristic of a Pulse Power Measurement

When demonstrating the Boonton 4500B to customers, a question often arises regarding the nature of the shape of the observed pulse when viewing in logarithmic mode. The trailing edge appears to display a slow decay, and there can be concern that the instrument is not showing a faithful reproduction of the pulse. The following article explains this phenomenon, which is present for all diode power sensors regardless of manufacturer, and shows that it has a negligible effect on measurement.

Peak Power Meters for Crest Factor and Scalar Measurements Using Broadband OFDM Signals

In this application note we highlight how broadband LTE and WiFi power amplifier (PA) performance can be characterized using Boonton’s high performance USB peak power meter. Figure of merit measurements like input and output crest factor can be performed to characterize amplifier compression using highly dynamic and broadband LTE & WiFi signals. With the use of a directional coupler the USB peak power meter is transformed to make scalar-like measurements such as gain and return loss.

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