3 결과
30 dBm + 30 dBm = 60 dBm? 이렇게 쉽게 계산할 수 없다는 것은 누구나 알고 있습니다.
본 애플리케이션 노트에서는 임의의 전력 수치를 더하거나 뺄 수 있는 소프트웨어 툴을 무료로 제공합니다. 또한 이 소프트웨어는 전력 및 전압 단위를 선형에서 대수로 변환하거나 그 반대로 변환할 수 있으며, 선형 전력 및 전압 비율을 데시벨로 변환하거나 VSWR을 다른 반사 수량으로 변환할 수 있습니다.
12월 10, 2018 | AN-번호 1GP77
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.
Aug 29, 2017 | AN-번호 1GP118