Rohde & Schwarz NRV-Z1
Diode Power Sensor, 10 MHz - 18 GHz

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Product Overview

The Rohde & Schwarz NRV-Z1 is a high sensitivity diode Power Sensor. The R&S NRV-Z1 Diode Power Sensor is based on zero-bias Schottky diodes which open up the power range below 1 µW down to the physical limit of 100 pW (-70 dBm). In this range, from -70 dBm to -20 dBm, the behavior is much the same as that of thermal sensors, i.e. precise measurement of the average power of modulated signals, RMS weighting of harmonics and linearity independent of temperature and frequency.

The characteristics of the NRV-Z1 allow precise power measurements also outside the square-law region up to a power of 20 mW (+13 dBm). The high signal-tonoise ratio of the sensor output signal in this region makes for very short measurement times. It should however be noted that the response of high-sensitivity sensors outside the square-law region differs from that of thermal sensors so that only spectrally pure signals with unmodulated envelope (CW, FM, ?M, FSK, GMSK) can be measured. Regarding the display linearity, greater measurement uncertainties than with thermal sensors are to be expected in this region due to frequency and temperature effects.

Specifications of the R&S NRV-Z1 Power Sensor include:

• Frequency Range: 10 MHz to 18 GHz
• Power Measurement Range:
  • 200 pW to 20 mW
  • 100 mW (AVG)
  • 100 mW (PK)
• Maximum SWR:
  • 0.01 GHz to 1 GHz: 1.06 (0.03)
  • >1 GHz to 2 GHz: 1.13 (0.06)
  • >2 GHz to 4 GHz: 1.27 (0.12)
  • >4 GHz to 18 GHz: 1.41 (0.17)
• Zero Offset:: ±100 pW
• Display Noise: 40 pW
• Linearity Uncertainty: 0.03dB (0.7%)
• Power Coefficient: 0
• Connector Type: N

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