The 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.
This paper introduces the fundamental theory behind beamforming antennas. In addition, calculation methods for radiation patterns with simulations results, as well as some real world measurement results for small linear arrays are shown. Due to the likely bandwidths in such applications, a non-standard way of graphical representation is proposed.
Concrete and confined use cases such as mobile voice in 2G and mobile data in 4G dominated the definition of past cellular technologies. In contrast, 5G introduces a paradigm change towards a user/application centric technology framework that aims to support the following triangle of important use case families. The enhanced mobile broadband (eMBB) use case represents the well-known continuation of the ever-increasing requirement to support both higher peak data rates per user and more system capacity. Learn more about this hot topic in our Whitepaper.
LTE user equipment (UE) receiver performance has significant impact to cellular radio network coverage and capacity. It determines the maximum data throughput across the air interface between the LTE base station (eNB, evolved node B) and the mobile network subscriber UE, thus it determines the total capacity across the air interface. Therefore, it is one of the most important measurements to verify the actual receiver performance of individual devices, and a key metric to compare different devices, in particular.
Detailed review of radar waveforms for aerospace and defense, commercial radar systems, including radar sensors used in automotive safety applications. Learn more on continuous waveform trends designed for specific needs, and application differences of continuous wave radar vs. pulse radar systems.
There is a growing requirement for determining the location of emitters in radiomonitoring, security services, military intelligence, etc. Spectral components used in spread-spectrum techniques can only be allocated to a specific emitter if the direction is known. Direction finding is therefore an indispensable first step in radiodetection.
This white paper describes the basic functionality of antennas. Starting with Hertz's Antenna model followed by a short introduction to the fundamentals of wave propagation, the important general characteristics of an antenna and its associated parameters are explained.