A Rectangular Dielectric Resonator Antenna (RDRA) fed by Dielectric Image Line (DIL) through a narrow slot placed on a finite ground plane is numerically investigated. The effects of ground plane size on the radiation performance of the antenna are analyzed. To increase the antenna gain, four sidewalls are placed around the corners of the ground. Also, a reflector is placed at the back side of ...

This article briefly reviews broadband design techniques in dielectric resonator antennas (DRAs). The attentions focus on a type of DRAs that can offer multi-resonant frequencies and these frequencies can be mergered into a broad band. Index Terms dielectric resonator antenna, broadband, multi-frequencies.1

An electrically small antenna based on a dielectric resonator antenna (DRA) is investigated. Two wellknown simulation techniques, the finite element method and the finite integration technique have been applied to study a low volume high permittivity DRA. It is demonstrated that the design of a compact size and wide frequency coverage DRA for 2.4–2.5 GHz ISM frequency band is possible by proper...

In this paper, a microstrip patch mounted on high impedance substrate with hexaferrite cavity is proposed. The proposed antenna design is simulated on electromagnetic (EM) simulation software using FR-4 substrate with dielectric constant of 4.4 and thickness of 1.60mm. The proposed antenna has a compact structure with a total size of 50.8x50.8mm. A microstrip fed low profile broadband dielectri...

This paper presents a new dual-band elliptical dielectric resonator antenna (EDRA). The EDRA is mounted on a ground plane and fed with a rectangular slot exited by a microstrip line. By optimizing the structure parameters, it is possible to obtain more than one excited mode in a limited frequency band. Numerical and measurement results for the radiation patterns of this slot fed EDRA are given ...

Future base stations for Spatial Division Multiplex Access (SDMA) will utilize adaptive antenna arrays, capable of identifying the direction of the incoming signal and steering the transmitted beam in appropriate directions. The radiating elements that have been thus far considered for building the antenna array are typically wire dipoles or microstrip patches. This tutorial paper describes a n...

ELECT A new ultra-wideband (UWB) antenna integrated with a narrow-band (NB) antenna has been designed and fabricated. The UWB antenna consists of a U-shaped dielectric resonator fed by a microstrip line. In addition, the proposed structure integrates an NB slot with the same polarisation. The electromagnetic analysis is carried out by using two commercial software tools. To validate the propose...

In this paper, a novel multi-permittivity cylindrical dielectric resonator antenna for wideband application is presented. The multi-permittivity cylinder is formed by combining two different permittivity material sectors in such a way that each sector (with constant permittivity) is 90 degree apart. A direct microstrip line coupling terminated with T-stub at the open end is used to excite the m...

The design of a wideband circularly polarized pixelated dielectric resonator antenna using a real-coded genetic algorithm (GA) is presented for far-field wireless power transfer applications. The antenna consists of a dielectric resonator (DR) which is discretized into 8 × 8 grid DR bars. The real-coded GA is utilized to estimate the optimal heights of the 64 DR bars to realize circular polariz...