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The Power Sensors R&S NRP-Z11 and R&S NRP-Z21 fuse
multiple-path architecture, multiple-diode technology and a
simultaneously scanning multichannel measurement system
into a unique high-performance concept.
Multiple-path architecture is the combination of two or three
diode detectors to obtain a large dynamic range for modulated signals. This is achieved by operating each detector
exclusively in the square-law region and by using only the
optimally driven detectors for the measurement.
Multiple diodes comprise several zero-bias Schottky diodes
connected in series and integrated on one chip. When used
in an RF detector, they expand its square-law region, because
the measurement voltage is split among several diodes – so
that each one is driven less – while at the same time the
detected voltages of the individual diodes are added together.