Ultrawideband monopole-dielectric resonator antennas: Designs and advances

D’Assunção

Micro & Optical Tech Letters

et al. 2013

A low profile and dual band rectangular dielectric resonator antenna (DRA) based on high permittivity BaTiO3 is proposed. The antenna main characteristics are investigated for wireless communication system applications at the frequency band from 6.0 to 8.0 GHz. The antenna design is performed using Ansoft HFSS through the finite element method. Antenna prototypes are built and measured on a vector network analyzer (R&S ZVB14 model) for comparison purpose. Agreement between simulated and measured results is observed. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:2759–2763, 2013

Section: Proposed Cra Antenna Structurementioning

confidence: 99%

Aperture coupled BaTiO₃ based dielectric resonator antenna with dual‐band

D’Assunção

Micro & Optical Tech Letters

et al. 2013

2014 IEEE Fourth International Conference on Consumer Electronics Berlin (ICCE-Berlin)

“…One of the most challenging desired developments is to make UWB radios up to full potential and design the UWB antennas for CR system. There are several ways to widen the impedance bandwidth of an antenna to design an UWB antenna [8,9]. In the recent years, different antenna designs for CR application have been reported in [3,7].…”

Section: Introductionmentioning

confidence: 99%

Novel compact UWB monopole RDRA for cognitive radio spectrum sensing applications

Atallah

Abdel‐Rahman

Yoshitomi

et al. 2014

In this paper, a novel compact UWB, low-profile monopole rectangular dielectric resonator antenna (RDRA) is proposed using relatively low dielectric constant substrate material (Rogers RTlDuroid 3010 Er = 10.2) and developed for cognitive radio (CR) spectrum sensing wireless communications applications. The rectangular DRA is fed with a modified stepped microstrip feed to ensure efficient coupling between the RDR and the feeder. UWB operation is achieved by converting RDRA to monopole RDRA by finite ground plane which leads to a wider operating bandwidth. The proposed UWB monopole RDRA with finite ground plane produced an impedance bandwidth about 141 % covering a huge band for CR spectrum sensing. The proposed antenna is designed to operate over a frequency range from 3.1 to 18 GHz and the radiation patterns are stable over the operating frequency range. The frequency characteristics and radiation performance of the proposed antenna are successfully optimized with numerical experimentation techniques using 3D full-wave electromagnetic simulator Ansoft HFSS. Moreover, the proposed design is implemented using three dimensional finite difference time domain (FDTD) method for verification purposes. The obtained FDTD and simulation results are in good agreement.Index Terms-Monopole RDRA (rectangular dielectric resonator antenna); UWB (ultra wide band); cognitive radio(CR}; finite diff erence time domain (FDTD)

“…This has been done to bring together different services into a single compact unit handset, while keeping high‐performance standards. To accomplish that it is necessary to develop small antennas that are able to operate in several frequencies [1–9]. Dielectric resonator antennas (DRAs) are integrated structures with predefined formats and are able to radiate if the dielectric constant is high (ε r > 10) [2].…”

Section: Introductionmentioning

confidence: 99%

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

D’Assunção

Micro & Optical Tech Letters

et al. 2012

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