Featured Articles

  1. 5G New Radio eBook 7/18/2019

    Is 5G simply another generation of mobile communications technologies? Or something revolutionary? In this eBook, Rohde & Schwarz give insights into 5G New Radio (NR), exploring all of its relevant details, key implementation aspects, and required test and measurement equipment for the development of 5G NR products.

  2. Verifying Additive Phase Noise And Jitter Attenuation Of PLLs In High-Speed Digital Designs 6/26/2019

    Increasing data rates in high-speed digital designs and wireless communications require SerDes PLLs and clock synthesizers with low additive phase noise and high jitter attenuation. Modern designs often follow a two-stage architecture comprising a jitter-attenuator and a frequency-synthesizer stage. Phase noise analyzers are the choice instruments for these tests due to their high phase noise sensitivity. This application note presents a phase noise analyzer solution to test the additive phase noise and jitter transfer function of PLLs.

  3. Optimize Beamforming: From Bits To RF Beams 6/25/2019

    To achieve accurate, reliable and efficient beamforming, it is necessary to understand and compensate for the nonlinear behavior of RF components. This app note covers the benefits of Rohde & Schwarz’s portfolio of conducted and OTA test solutions and how they help to optimize beamforming.

  4. Battery Life Optimization In IoT devices With The Multi-Channel Power Probe R&S®RT-ZVC02/04(A) 6/25/2019

    This application note describes Battery Life Measurements with the R&S®RT-ZVC02/04(A) MultiChannel Probe. The measurements are described mostly with the use of an oscilloscope. However, measurements are also possible with CMWRun and a corresponding communication tester.

  5. ATS1000: Passive Antenna Measurement And Nearfield - Farfield Transformation 5/8/2019

    This application note describes how to measure the antenna pattern of a mm-Wave device in the R&S®ATS1000 shielded chamber. The paper also covers the required calibration of the measurement setup and a possible near field to far field transformation when measuring larger devices.

  6. R&S dB Calculator 5/8/2019

    This app note discusses a software tool that can be used to add or subtract an arbitrary number of powers, as well as convert power and voltage units from the linear to the logarithmic scale, convert linear power and voltage ratios to decibels, and convert a VSWR to other reflection quantities.

  7. Overview Of Tests On Radar Systems And Components 5/8/2019

    This application note demonstrates how to use the Rohde & Schwarz radar product portfolio to tackle test and measurement tasks in modern radar technology. The idea is to become familiar with radar issues as well as learn how to solve certain test and measurement tasks.

  8. Understanding Pulsed Phase Noise Measurements 3/11/2019

    This application note focuses on phase noise measurements for pulsed RF carriers. The paper addresses some of the physical limitations relating to pulsed phase noise measurement and introduces the capabilities of the new Rohde & Schwarz FSWP phase noise analyzer.

  9. How To Optimize Doherty Power Amplifiers 2/27/2019

    Doherty designs achieve high efficiency, greater linearity, and increased output power. However, the development of a Doherty amplifier for a high-performance radio transmitter encounters challenges such as how to get the maximum possible performance from the design and how to evaluate its sensitivities and variations for production. This application note discusses these challenges and offers solutions specifically for the application of designing radio transmitters. Download the full paper for more information.

  10. Fast Validation Of EMC Test Sites Above 1 GHz With Time Domain 2/21/2019

    EMI test sites for radiated emission measurements in the 1 GHz to 18 GHz frequency range rely on free space conditions to minimize the influence of reflections on the received signal. Practically, this is achieved using shielded enclosures that are fully lined with RF absorbing material. Site validation determines the deviations from the free space conditions that are necessary to meet the acceptance criterion for performing EMI compliance measurements in a fully anechoic room. This application note covers two different approaches for showing compliance with the acceptance criterion.