3 結果
30 dBm + 30 dBm = 60 dBm? これほど単純な計算で済まないことはご存知のとおりです。
このアプリケーションノートでは、任意の数のパワーの加算または減算に使用できる無料ソフトウェアツールをご紹介しています。このソフトウェアを使用すると、パワーや電圧単位の線形スケールから対数スケールへの変換（またはその逆の変換）、線形パワー比および電圧比のデシベルへの変換、VSWRの他の反射量への変換が行えます。
12月 10, 2018 | AN 番号 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 番号 1GP118