Vector Network Analyzer (VNA) Measurements and Uncertainty Assessment ab 117.49 € als pdf eBook: . Aus dem Bereich: eBooks, Sachthemen & Ratgeber, Technik,
Vector Network Analyzer Measurements and Uncertainty Assessment ab 128.49 € als gebundene Ausgabe: 1st ed. 2017. Aus dem Bereich: Bücher, Wissenschaft, Technik,
Vector Network Analyzer Measurements and Uncertainty Assessment ab 128.49 EURO 1st ed. 2017
Vector Network Analyzer (VNA) Measurements and Uncertainty Assessment ab 117.49 EURO
The ability of microwave and millimeter wave radiation to detect biological agents, with a particular focus on anthrax spores, has been investigated. The characterization measurement technique for powder dipicolinic acid sample up to 170 GHz is based on standard waveguide configuration. A variety of network analyzer systems and scalar analyzer systems have been developed and applied to make the transmission and reflection measurement from X band to D band. No resonance has been found in dipicolinic acid. A multilayer CPW sensor has been designed to test the liquid sample such as keratin, DNA and bacteria subtilis solution up to 40 GHz. Simulation and numerical calculation help to separate the radiation loss from the total loss, therefore, the dielectric properties can be deduced from the extracted dielectric loss. Measurements of liquid samples like ethanol, methanol and water have a good compatibility with theoretical prediction. The ultimate objective is to find the resonances then apply high power microwave at those frequencies to kill the spores "locally" based on the nonthermal heating mechanism.
Within this Project, the main goal is to find the approximate values of the parasitic elements for 0805 SMD resistors and capacitors as well as 0603 SMD resistors and capacitors when operated on higher frequencies. To achieve the required task, the substrate RT/duroid 5870 (Rogers Corporation) with a printed copper transmission line on it, was used. This transmission line was cut in the middle and the SMD components were fixed on that gap by soldering at both sides. This model was then placed on a solid copper box and attached to the Network Analyzer with the help of connectors. The measurements were taken within the frequency range of 50 MHz and 10 GHz and transferred from the Network Analyzer to the computer (attached to the Network Analyzer) with the help of the ADS (Advanced Design System) software. Finally, compatible circuit models (for resistors and capacitors) were created in ADS by considering all the parasitic elements and the recorded measurements (respective S-parameters) were matched and optimized by using the fitting technique as well as by the different features of ADS.
In this book, a systematic approach for the design, fabrication and testing of antennas using Ink Jet Printing Technology (IJPT) is presented. The antennas are fabricated using DMP-2800 Dimatix FujiFilm Material Printer and Sliver Nano Particles (SNP) ink. The 3D electromagnetic simulation softwares CST MWS and HFSS are used to design the antennas reported in this book . In addition to simulation, measurements of the antenna parameters have been performed using a vector network analyzer and UALR's anechoic chamber. An initial antenna design based on the traditional square patch geometry is involved as a benchmark to characterize the entire approach adopted to design any antenna geometry. The systematic approach for the manufacturing process includes the optimal number of printed layers, curing temperature and curing time, to achieve high electrical conductivity.
A major revolution in wireless industry is now due, with the development of Ultra-Wideband, Cognitive Communication, and Networking. The goal of this book is to do spectrum occupancy and wideband channel sounding using automated system. In this book, the automated systems developed using LabVIEW as a tool to control Spectrum analyzer, Vector Network Analyzer (VNA), and Digital Sampling Oscilloscope (DSO) are discussed. Spectrum occupancy for CDMA, GSM, Wi-Fi, and DTV spectrum s is investigated, followed by field strength measurements for DTV signal. Frequency domain and Time domain channel sounding are also performed and all results are shown.
This book describes vector network analyzer measurements and uncertainty assessments, particularly in waveguide test-set environments, in order to establish their compatibility to the International System of Units (SI) for accurate and reliable characterization of communication networks. It proposes a fully analytical approach to measurement uncertainty evaluation, while also highlighting the interaction and the linear propagation of different uncertainty sources to compute the final uncertainties associated with the measurements. The book subsequently discusses the dimensional characterization of waveguide standards and the quality of the vector network analyzer (VNA) calibration techniques. The book concludes with an in-depth description of the novel verification artefacts used to assess the performance of the VNAs. It offers a comprehensive reference guide for beginners to experts, in both academia and industry, whose work involves the field of network analysis, instrumentation and measurements.