Featured Articles

  1. Generation Of Radar Signals In A Hardware In The Loop (HIL) Environment 3/16/2021

    System level testing in the lab is often performed in a hardware-in-the-loop (HIL) environment. This testing is key to keep costs under control, bringing multiple advantages to the process. This application note provides some insight into generating radar signals for hardware-in-the-loop testing with the R&S®SMW200A.

  2. Measuring Multi-Antenna Isolation Using A Multiport VNA 3/11/2021

    Higher densities of Radio Frequency (RF) transmitter and receiver antennas on many platforms is a result of the expansion of wireless technology. Knowing the actual antenna to antenna isolation allows engineers to assess the filtering requirements in wireless receivers. 

  3. Testing True Performance Of ADCs Using R&S®SMA100B Signal Generator 3/11/2021

    Analog-to-digital converters (ADCs) have largely increased in speed and accuracy, allowing high-speed video processing and software defined radio (SDR) applications, where digitization is being performed at ever-higher intermediate frequencies (IF). Standards have been raised regarding ADC test equipment, especially with the analog input signal noise and sample clock sources used in the test setup. 

  4. Spurious Testing Of 5G Devices Using EMI Receivers 3/11/2021

    With all eyes on the 5G wave, there are challenges that engineers face when it comes to radiated spurious emission (RSE) testing, and RSE testing is only one component of performing fully-compliant EMC measurements. Discussed in this application note are the latest features available in EMI test receivers, why they matter to everyday EMC measurements, and how developers of fifth-generation (5G) wireless technology are chasing an aggressive and impressive vision.

  5. Automotive Connectivity Enables The Intelligent Transportation System 3/11/2021

    In this white paper, automotive use cases and scenarios are discussed along with technology aspects, specifically for automotive applications. Important test and measurement needs are required to ensure optimal performance of these technologies. 

  6. Extended Resolution Bandwidths For Ultrawideband (UWB) Measurements 2/8/2021

    Used in communications, radar sensors, and IoT, ultrawideband (UWB) technology uses an extremely high bandwidth of 500 MHz or more. The ETSI standard requires a resolution bandwidth of 50 MHz. This application note explains technical reasons for the bandwidth limitation and presents solutions for regulative UWB testing using the R&S®ESW. 

  7. Identifying Defective Single Elements In Antenna Arrays 1/11/2021

    This white paper discusses fault identification in single elements of antenna arrays by scanning in the near-field range and applying near-field to far-field transformation methods. It also present’s Rohde & Schwarz’s solution to efficiently identify individual defective elements in magnitude and phase within an antenna array.

  8. Enhancing Channel-To-Channel Alignment For Accurate Phase-Coherent Multichannel Acquisition 1/11/2021

    This application note shows how to measure the channel-to-channel skew and compensate it across the entire signal path between the signal source and the oscilloscope channel input when using the high-speed differential pulse source available for the R&S®RTO and R&S®RTP oscilloscopes.

  9. Spectrum Monitoring With Hybrid AOA/TDOA Geolocation 1/7/2021

    This white paper explains the locating methods AOA and TDOA, including their differences. It also describes the products and solutions ideal for efficient spectrum monitoring with hybrid geolocation.

  10. DF Accuracy Requirements For Monitoring Stations 1/7/2021

    Radio direction finders (DF) in spectrum monitoring are widely used to locate transmitters such as radio frequency (RF) interferers and unlicensed broadcasting stations. This white paper focuses on triangulation since this method is used in the vast majority of use cases and applications.