Small size dual‐band rectangular dielectric resonator antenna based on calcium titanate (CaTiO₃)

Abstract

A rectangular dielectric resonator antenna (DRA) based on CaTiO3 with low profile, dual‐band and high dielectric constant is proposed as a candidate for application in wireless communication systems at the microwave band. The proposed geometry is composed by a dielectric resonator mounted on a microstrip line section that is used as the feeding element. The antenna analysis is performed using Ansoft HFSS that implements the finite element method. Measured results are shown for several DRA prototypes. A good agreement between numerical and experimental results is observed. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:976–979, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26729

High-k Polymer Nanocomposites for Energy Storage Applications

“…Before the discovery of BT, steatite, mica, MgTiO 3 , CaTiO 3 , and TiO 2 were widely used in capacitors. These materials exhibit ɛ r ≤ 100, which limits their use in the industry of dielectric capacitors [13][14][15]. During World War II, the need of high dielectric constant materials increased in capacitor applications [16,17].…”

Síntese e caracterização de titanato de bário, dopados com európio e neodímio

“…Na seguinte perda se caracteriza pela saída do dióxido de carbono apresentando 4,7 mols na porção poliéster formados e da ultima, também é dióxido de carbono, contendo 9,5 mols. 3 . O complexo polimérico metálico formado a 300 °C ("puff"), e as suas respectivas associações de seus grupos funcionais, estão listadas na tabela 2.…”

Wave Concept Iterative Procedure Analysis of Patch Antennas on Nanostructured Ceramic Substrates

“…Generally, nanostructured ceramic substrates are obtained by traditional solid-state method. Chemical techniques, such as combustion and sol-gel, are used to produce these oxides with several advantages, namely, nanosized particles, high reactivity, and very good homogeneity in composition [8][9].…”