FEATURE ARTICLES

• Dual Band Circularly Polarized Dielectric Resonator Antenna For Satellite Communication

  In this example, a circularly polarized dielectric resonator antenna intended for use as part of a compass navigation satellite system (CNSS) is simulated in XFdtd to generate return loss, gain patterns, broadside gain versus frequency, and axial ratio.

• Identifying Defective Single Elements In Antenna Arrays

  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.

• Enhancing Channel-To-Channel Alignment For Accurate Phase-Coherent Multichannel Acquisition

  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.

• Reduce RF Circuit SWaP With High K Materials And Precision Thin-Film Microstrip Technology

  This white paper covers how RF designers can reduce the SWaP of RF circuits while maintaining tight tolerances by processing Knowles Precision Devices’ high K materials on high-precision thin-film microstrip technology. It also demonstrates techniques for reducing overall board space usage by integrating multiple RF circuits onto a single substrate.

• Spectrum Monitoring With Hybrid AOA/TDOA Geolocation

  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.