Theory And Experiment Of Planar Inverted F Antennas For Wireless Communications Applications
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Theory and Experiment of Planar Inverted F-antennas for Wireless Communications Applications
The planar inverted F-antenna (PIFA) is a compact element for wireless applications. There is little theory available on this subject. This dissertation investigates simple theoretical models for two most popular types of PIFA - rectangular and semicircular PIFA's. The PIFA's three-slot cavity model (CM) and transmission line model (TLM) are presented here, along with numerical and physical experimental techniques and results for the PIFA far field and impedance behavior. The CM is used to predict PIFA's far field pattern, polarization, impedance, Q-factor, and bandwidth from an equivalent resonant cavity with perfect magnetic and electric boundaries. The TLM represents the PIFA as an equivalent transmission lines arrangement with three branches representing its radiating slots and one short-circuited branch. Extensive measurements and numerical simulations confirmed that PIFA's radiation and impedance characteristics can be predicted with simple theoretical calculations described here. The measurements also showed PIFA's pattern and impedance dependence on the sideslot radiation.
Handbook of Research on Emerging Designs and Applications for Microwave and Millimeter Wave Circuits
Microwave and millimeter-wave (mm-wave) circuits and systems have been widely employed in various emerging technologies such as 5G and beyond wireless mobile communication systems, autonomous driving, electronic warfare, and radar systems. To better understand the benefits, challenges, and opportunities of this technology, further study is required. The Handbook of Research on Emerging Designs and Applications for Microwave and Millimeter Wave Circuits describes the latest advances in microwave and mm-wave applications and provides state-of-the-art research in the domain of microwave, mm-wave, and THz devices and systems. Covering key topics such as antennas, circuits, propagation, and energy harvesting, this major reference work is ideal for computer scientists, industry professionals, researchers, academicians, practitioners, scholars, instructors, and students.
Dielectric Material
Author: Marius Alexandru Silaghi
language: en
Publisher: BoD – Books on Demand
Release Date: 2012-10-03
This book attempts to bring together the theory and practice of dielectric materials for different kind of industrial applications. Fragmented information on dielectric theory and properties of materials, design of equipment and state of the art in applications relevant to the manufacturing industry should be collated and updated and presented as a single reference volume. In this book relevant and useful information is presented in the quoted literature and covered by our key patent applications.