R&S®NRPM OTA power measurement solution

R&S®NRPM OTA power measurement solution
Open Lightbox
R&S®NRPM OTA power measurement solution
Open Lightbox
R&S®NRPM OTA power measurement solution
Open Lightbox
R&S®NRPM OTA power measurement solution
Open Lightbox
R&S®NRPM OTA power measurement solution
Open Lightbox
R&S®NRPM OTA power measurement solution
Open Lightbox
R&S®NRPM OTA power measurement solution
Open Lightbox
R&S®NRPM OTA power measurement solution, application image R&S®NRPM OTA power measurement solution, application image R&S®NRPM OTA power measurement solution, front view R&S®NRPM OTA power measurement solution, front view R&S®NRPM OTA power measurement solution, front high R&S®NRPM OTA power measurement solution, front view R&S®NRPM OTA power measurement solution, front view

Key facts

  • Frequency range from 18 GHz to 90 GHz
  • Extremely fast RX list mode
  • For 5G, WLAN IEEE 802.11ad and IEEE 802.11ay as well as automotive radar
  • Fully calibrated antenna module with integrated diode detector
  • Scalable to customer requirements

Designed for extremely accurate over-the-air (OTA) power measurements

The R&S®NRPM is a fully calibrated and individually scalable OTA power measurement solution for benchtop applications or in anechoic chambers. Covering a frequency range from 18 GHz to 90 GHz, it is perfect for over-the-air (OTA) beamforming verification in 5G, WLAN IEEE 802.11ad and IEEE 802.11ay and the calibration of transmit antenna output power.

Features & benefits

Specified system uncertainty

Fully calibrated OTA power measurement system with specified system uncertainty

With conventional OTA systems, measurement uncertainty comes from frequency-dependent antenna gain, antenna patterns and mismatched RF components. By measuring power directly at the antenna, the R&S®NRPM solution avoids this problem because it does not need any additional RF components. Moreover, the antenna gain, antenna pattern and diode detector are calibrated together. The user does not need to make any complicated system calibrations.

OTA power measurement system
Open Lightbox

OTA power measurement system

Low-reflection antenna module

Low radar cross section avoids disturbing reflections

The R&S®NRPM-A90 and -A90D antenna modules have a very low radar cross section of typically < –26 dB/sm, putting them about 15 dB/sm below the value of a typical horn antenna. This makes them ideal for screened environments, due to the virtual absence of reflections.

R&S®NRPM-A90 low-reflection antenna module
Open Lightbox

R&S®NRPM-A90 low-reflection antenna module

Very high sensitivity

The R&S®NRPM OTA power measurement solution uses a highly sensitive diode detector integrated directly on the antenna

The R&S®NRPM-A90 and R&S®NRPM-A90D antenna modules can measure power down to -76 dBm. For example, a DUT with a transmit power of -10 dBm can be positioned at a distance of 1 m, and  the received power at the antenna module can still be precisely determined.

OTA power measurement solution, benchtop
Open Lightbox

OTA power measurement solution, benchtop

System calibration for OTA receiver tests

To test the DUT receiver, it is necessary to know the exact OTA transmitted power at the DUT. To calibrate this measurement setup, the R&S®NRPM-A90 antenna module is positioned at the DUT for the transmit power calibration of the signal generator. The calibration uses an R&S®NRPM-A90/A90D antenna module, which is later replaced with the DUT. The receive power of the DUT is precisely detected.

System calibration for OTA receiver tests
Open Lightbox

System calibration for OTA receiver tests

TX beamforming verification

Multiple R&S®NRPM-A90/A90D antenna modules are needed to test the beamforming function. If the antenna beam is directed at a specific antenna module, this module shows the highest power for all the antennas. Three antenna modules – arranged in a plane – are used to verify whether beamsteering in the horizontal plane properly functions. To test vertical beamforming, the R&S®NRPM-A90/A90D antenna modules must be arranged on at least two horizontal planes.

TX beamforming verification
Open Lightbox

TX beamforming verification

Specifications
R&S®NRPM-A90 single polarized antenna
Frequency range 18 GHz to 90 GHz
Power measurement range (frequency dependent) continuous average -76 dBm to -19 dBm
trace -63 dBm to -19 dBm
Rise/fall time 2.2 μs
Video bandwidth 220 kHz
Measurement uncertainty
18 GHz to 24 GHz absolute 0.68 dB to 0.81 dB
relative 0.05 dB to 0.09 dB
> 24 GHz to 35 GHz absolute 0.49 dB to 0.66 dB
relative 0.05 dB to 0.09 dB
> 35 GHz to 57 GHz absolute 0.50 dB to 0.72 dB
relative 0.05 dB to 0.09 dB
> 57 GHz to 71 GHz absolute 0.58 dB to 0.83 dB
relative 0.05 dB to 0.09 dB
> 71 GHz to 81 GHz absolute 0.61 dB to 0.91 dB
relative 0.05 dB to 0.09 dB
> 81 GHz to 90 GHz absolute 0.69 dB to 0.97 dB
relative 0.05 dB to 0.09 dB
R&S®NRPM-A90D dual polarized antenna
Frequency range 18 GHz to 90 GHz
Power measurement range (frequency dependent) continuous average -76 dBm to -19 dBm
trace -63 dBm to -19 dBm
Rise/fall time 2.2 μs
Video bandwidth 220 kHz
Measurement uncertainty (measurement distance 1 m)
18 GHz to 24 GHz absolute 0.73 dB to 0.85 dB
relative 0.05 dB to 0.09 dB
> 24 GHz to 35 GHz absolute 0.55 dB to 0.71 dB
relative 0.05 dB to 0.09 dB
> 35 GHz to 57 GHz absolute 0.59 dB to 0.78 dB
relative 0.05 dB to 0.09 dB
> 57 GHz to 71 GHz absolute 0.68 dB to 0.90 dB
relative 0.05 dB to 0.09 dB
> 71 GHz to 81 GHz absolute 0.72 dB to 0.99 dB
relative 0.05 dB to 0.09 dB
> 81 GHz to 90 GHz absolute 0.87 dB to 1.10 dB
relative 0.05 dB to 0.09 dB

Available options

Antenna modules
Product
Description
R&S®NRPM-A90

Order number 1426.7760.02

Description

Single-polarized antenna module

Fully calibrated, low-reflection, single-polarized Vivaldi antenna with an integrated diode detector for power
measurements.

R&S®NRPM-A90D

Order number 1426.7777.02

Description

Dual-polarized antenna module

Two low-reflection, single-polarized Vivaldi antennas with an integrated diode detector, precisely arranged in a right angle. This allows measurement in both polarization directions.

Sensor modules
Product
Description
R&S®NRPM3

Order number 1425.8563.02

Description

Three-channel sensor module

R&S®NRPM3N

Order number 1425.8592.02

Description

Three Channel LAN Sensor Module

Interface for shielded RF test box
Product
Description
R&S®NRPM-ZD3

Order number 1425.8786.02

Description

Filtered cable feedthrough

R&S®NRPM-ZKD3

Order number 1436.2984.02

Description

Interface cable

Interface for benchtop application
Product
Description
R&S®NRPM-Z3

Order number 1426.7602.02

Description

Interface module

The R&S®NRPM-Z3 is directly plugged onto the R&S®NRPM3 three-channel sensor module and can host up to three R&S®NRPM-A90 antenna modules to avoid additional cables.

General accessories
Product
Description
R&S®NRP-ZKU

Order number 1419.0658.02

Description

USB-A interface cable, length: 0.75 m

R&S®NRP-ZKU

Order number 1419.0658.03

Description

USB-A interface cable, length: 1.5 m

R&S®NRP-ZKU

Order number 1419.0658.04

Description

USB-A interface cable, length: 3 m

R&S®NRP-ZKU

Order number 1419.0658.05

Description

USB-A interface cable, length: 5 m

R&S®NRP-ZK6

Order number 1419.0664.02

Description

6-pole interface cable, length: 1.5 m

R&S®NRP-ZK6

Order number 1419.0664.03

Description

6-pole interface cable, length: 3 m

R&S®NRP-ZK6

Order number 1419.0664.04

Description

6-pole interface cable, length: 5 m

R&S®NRP-Z5

Order number 1146.7740.02

Description

USB sensor hub

R&S®NRP-Z5 can host up to 4 R&S®NRPxxS(N), R&S®NRPxxT(N), R&S®NRPxxA(N) or R&S®NRP-Z sensors. A professional trigger solution allows simultaneous internal and external triggering of all connected sensors.

R&S®NRPM-ZKT

Order number 1425.8857.02

Description

Trigger cable

Documentation
Product
Description
R&S®DCV-1

Order number 0240.2187.06

Description

Documentation of calibration values

R&S®DCV-ZP

Order number 1173.6506.02

Description

Printout of DCV

Related videos

Understanding OTA Power Measurements

This video provides a brief technical introduction to over-the-air (OTA) power measurements, how they are different from traditional conducted power measurements.

18-May-2020

Using the R&S®NRPM

This short video provides an brief introduction to the R&S®NRPM over-the-air (OTA) power measurement system.

18-May-2020

Request information

Do you have questions or need additional information? Simply fill out this form and we will get right back to you.

Marketing permission

Your request has been sent successfully. We will contact you shortly.
An error is occurred, please try it again later.
General and legal information

Manufacturer's recommended retail price (MSRP). The price shown does not include VAT. Prices and offers are only intended for entrepreneurs and not for private end consumers.

You may use the electronic signature via DocuSign to submit your information to enroll with the Rohde & Schwarz Customer Delegated Administration program. DocuSign processes the information provided according to their . The minimum system requirements for using the DocuSign system may change over time. The current system requirements are found

Terms & Conditions of the Prize Draw 10 years Rohde & Schwarz oscilloscopes

1. The prize draw “10 years Rohde & Schwarz oscilloscopes” (herein referred to as “Draw”) is organized by Rohde & Schwarz GmbH & Co. KG, Mühldorfstraße 15, 81671 Munich, Germany, Tel. +49 89 41 29 0 (herein referred to as “R&S).

2. All participators can register to the draw during January 01, 2020 to December 31, 2020 with their name, company name and business e-mail.

3. Participation is free of charge and not dependent on the purchase of goods or services.

4. The draw is only open to legal entities and only the legal entities are able to win the prizes. An individual person is not allowed to participate on its own name and its own account but as a representative of a legal entity filing the participation form in the name of and on behalf of the legal entity.

5. The prizes to win are 1 of 10 R&S®RTB2000 within the time frame January 1, 2020 to December 31, 2020:

Prize: 1x R&S®RTB2000 Digital Oscilloscope

6. The draw takes place at Rohde & Schwarz headquarters, Muehldorstrasse 15, 81671 Munich. The winner of the prizes will be informed by e-mail within 5 (5) working days.

7. The authorized representative of the legal entity shall inform Rohde & Schwarz about the acceptance of the price. In case of the denial of the acceptance, or no answer within two (2) weeks, a new winner will be drawn. If no winner can be determined within four (4) weeks, the draw ends and the prize forfeit.

8. R&S’ employees and members of their families and also person being familiar with the process of the draw and members of their families are excluded from filling the participation form.

9. No cash equivalent or exchange of prizes is allowed. Prizes are non-transferable. All taxes, levies, duties, fees and other charges levied in the participant´s country shall be borne by the participant.

10. Personal data will be processed only for the purpose of this prize draw and deleted four (4) weeks after the draw, if not agreed otherwise.

11. Any Participant who does not comply with these Terms & Conditions may be disqualified by R&S from this Competition. In such cases, prizes can also be withdrawn retrospectively. In case a prize is withdrawn retrospectively due to the non-compliance with these Terms & Conditions, it shall be returned by the respective participant at his cost to R&S’ address mentioned under Nr.1 and a new winner will be drawn.

12. The participants cannot claim the prizes of this draw and no legal recourse is permitted in this respect.

13. The draw and any contractual relationship arising therefrom between R&S and the respective participant shall be governed by and construed in accordance with the laws of Germany, without any recourse to the conflict of laws. The courts of Munich, Germany, shall have exclusive jurisdiction in case of any disputes arising directly or indirectly from the participation in this Competition.

* “fast delivery” inside 7 working days applies to the Rohde & Schwarz in-house procedures from order processing through to available ex-factory to ship.