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  • GPIB to LAN converter

    Integration of instruments with an Ethernet interface, such as the R&S®OSP open switch and control platform, into a pure GPIB bus system.

  • Antenna Beam Characterization of 5G Mobile Devices and Base Stations Using the R&S®NRPM Over-the-Air (OTA) Power Measurement Solution

    Radio frequencies in bands around 28 GHz are being discussed as candidates for mobile communications of the fifth generation (5G). Beam steering will be a key feature in the context of 5G. It will be a major challenge to test the beam steering capabilities of base stations and user equipment in every phase from research and development through production. Conducted measurements will be mainly replaced by over-the-air measurements of electromagnetic radiation. Rohde & Schwarz offers the R&S®NRPM Over-the-Air (OTA) Power Measurement Solution that perfectly fits such measurement needs.Part of this solution are the R&S®NRPM-A66 antenna modules. They have integrated diode detectors. Thus, there are no cables between the antenna and the detector as in traditional setups. This avoids high and potentially unknown RF losses. The R&S®NRPM-A66 antenna modules with their integrated diode detectors are factory calibrated, which means that the user does not have to calibrate them to achieve highly accurate measurement results.This application note contains theoretical background on OTA power and pattern measurements. It gives step-by-step instructions for the verification of the power level and the radiation pattern of a device under test (DUT) in comparison to a golden device, and it presents an approach for verifying the accuracy of beam steering.

  • Receiving BeiDou, GALILEO and GPS signals with MATLAB® and R&S®IQR, R&S®TSMW

    Satellite Navigation became quite common during the recent years. In addition to the established U:S: GPS system, China has develloped its own navigation system called BeiDou. Since BeiDou receivers are not yet wide spread on the market, this MATLAB based application can be used to analyze and process BeiDou signals. The free application enables and demonstrates remote operation of Rohde & Schwarz instruments using SCPI commands and attribute based drivers directly out of MATLAB scripts and functions.

  • LTE UE receiver performance measurements

    LTE user equipment (UE) receiver performance has significant impact to cellular radio network coverage and capacity. It determines the maximum data throughput across the air interface between the LTE base station (eNB, evolved node B) and the mobile network subscriber UE, thus it determines the total capacity across the air interface. Therefore, it is one of the most important measurements to verify the actual receiver performance of individual devices, and a key metric to compare different devices, in particular.This paper shall give an introduction to receiver performance measurements and discusses the measurement metrics as well as the challenges of over the air (OTA) measurements.

  • LTE Beamforming Measurements

    Multiple input multiple output (MIMO) technology is an integral part of 3GPP E-UTRA long term evolution (LTE). As part of MIMO, beamforming is also used in LTE. This application note provides a brief summary of the transmission modes (TM) in LTE and describes the beamforming measurements for base stations (BS) and user equipment (UE). The T&M options using various Rohde & Schwarz instruments are also presented.

  • IQWizard - IQ Signal Measurement and Conversion

    IQWizard is a tool for loading IQ signal files in various formats and measuring IQ signals with a FSx spectrum analyzer or ESx Receiver. The obtained IQ data in memory can be stored in various formats or be transmitted to an R&S® vector signal generator with WinIQSIM™ or WinIQSIM2™.

  • Direct Remote Control of Switch Matrix OSP via Network and Spectrum Analyzers

    This application note shows how to remote control the switching of RF and digital I/O signals by R&S®OSP Open Switch and Control Platform directly from a Vector Network Analyzer (VNA) or from a Spectrum Analyzer (SA). The R&S®ZVA, R&S®ZVB, R&S®ZNB, R&S®FSW and R&S®FSV families are covered. The application note first describes the requirements and setup procedure. It is shown how to install the software and how to set up the system in order to get highest flexibility and best usability. It is then shown how to calibrate the entire configuration and finally some practical examples are provided. Switching is explained using VNAs as an example, the appendix 5.4 provides hints regarding the differences when using SAs in a similar way.

  • 5G NR Base Station Performance Tests

    3GPP TS38.141-1 defines conducted conformance tests for 5G NR base stations according to Release 15. This application note describes how all required peformance (Px) tests (TS38.141-1 Chapter 8) can be performed quickly and easily by using remote control of vector signal generators from Rohde & Schwarz.The R&S®Quickstep Test Execution Software (version 5.0 and higher) enables and demonstrates remote operation.

  • Antenna Array Testing - Conducted and Over the Air: The Way to 5G

    5G networks will need to offer more capacity and flexibility while lowering the operational expenses of the system. Two new technologies can simultaneously address both the increase in capacity and the increase in energy efficiency: Virtualization & Massive MIMO. This white paper provides an overview of test solutions addressing current and future requirements for antenna verification including both conducted and over-the-air (OTA) test methods, which result from applying Massive MIMO antenna technology.This white papers complements the "Millimeter-Wave Beamforming: Antenna Array Design Choices & Characterization" white paper (1MA276) from Rohde & Schwarz, which introduces fundamental theory behind beamforming antennas and provides calculation methods for radiation patterns, a number of simulation results as well as some real world measurement results for small linear arrays.

  • 5G NR Base Station Receiver Tests

    3GPP defines the Radio Frequency (RF) conformance test methods and requirements for 5G NR Base Stations (BS) in the technical specifications TS 38.141. This application note describes how all mandatory RF receiver tests (TS 38.141-1, chapter 7), according to Release 15, can be performed quickly and conveniently with signal generators from Rohde & Schwarz by either choosing manual operation or a remote control approach. Moreover, one test case requires a signal or spectrum analyzer from Rohde & Schwarz which is highlighted seperately in the corresponding chapter.In Addition, an example software library comes with this application note to demonstrate the remote control approach of base station testing. This example requires R&S®QuickStep and is provided as is.

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