Results 171 to 180 of about 1,100 (220)

A Miniature Broadband Dielectric Resonator Antenna (DRA) Operating at 2.4GHz

IEEE International Workshop on Antenna Technology Small Antennas and Novel Metamaterials, 2006., 2006
This paper presents a study on a broadband DRA using a new feed technique developed at Antenova Ltd, UK. The DRA is designed to operate at 2.4GHz for IEEE802.11b/g applications and has a length of only 0.12λ. Characteristics of the prototype DRA are assessed using both a Finite Integration Technique simulation and experimental measurements.
Z. Wang, C.C. Chiau, X. Chen, B.S. Collins, S.P. Kingsley   +4 more
openaire   +1 more source

A Novel Feeding Technique for Dielectric Resonator Antennas (DRAs) for Broader Bandwidth

2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, 2020
This article reports on a novel Coplanar Wave-Guide (CPW) loop feed structure with an isolated circular slot in the middle to excite a higher order mode in the cylindrical Dielectric Resonator Antenna (DRA). The proposed feeding structure is etched on the bottom side of the substrate and it allows the cylindrical DRA to achieve a broader bandwidth and ...
Muhammad Nasir, Umer Farooq, Adnan Iftikhar, Muhammad S. Khan, Adnan Fida, Muhammad F. Shafique, Sajid M. Asif, Benjamin D. Braaten   +7 more
openaire   +1 more source

Analytical Computation of Resonant Frequency of Rectangular Dielectric Resonator Antenna By Including Effective Dimensions of DRA

Wireless Personal Communications, 2018
In this paper, a new concept of effective dimensions of rectangular dielectric resonator antenna (DRA) is introduced to calculate the resonant frequency of rectangular DRA accurately. Mathematical modeling for computation of resonant frequency is developed using transcendental equation and appropriate boundary conditions of rectangular dielectric ...
Piyush Sharma, Mahender Singh, Arti Vaish, Rajveer S. Yaduvanshi   +3 more
openaire   +1 more source

Ultra wideband hybrid dielectric resonator antenna (DRA) with parasitic ring

2010 IEEE International Conference on Wireless Information Technology and Systems, 2010
A new technique has been presented in an attempt to achieve wideband DRA. Hybrid DRAs are well known as wideband antenna. By adding a parasitic ring to the top of the dielectric resonator ring, we were able to further improve the impedance bandwidth for hybrid DRAs.
Mohamed M. Morsy, Muhammad R. Khan, Frances J. Harackiewicz   +2 more
openaire   +1 more source

F-Shaped Dielectric Resonator Antenna (DRA) for 4G/LTE Applications

Applied Mechanics and Materials, 2015
A F-shaped DRA at 2.6 GHZ for 4G/LTE application is presented in this paper. The F-shaped DRA was mounted on FR4 as a substrate. The simulated and measured impedance bandwidth are 20% (2.43-2.94GHz) and 36% (2.04-2.98GHz), respectively. The mode excited in this design is TEy1δ1 mode. The antenna provides gain of 1.99 dBi at frequency 2.6 GHz.
Siti Fairuz Roslan, Muhammad Ramlee Kamarudin, Mohd Haizal Jamaluddin, Mohsen Khalily   +3 more
openaire   +3 more sources

Slot-fed cylindrical dielectric resonator antenna (DRA) for wideband application

Proceedings of the 9th International Symposium on Antennas, Propagation and EM Theory, 2010
A novel wideband slot-fed cylindrical dielectric resonator antenna (DRA) is proposed in this paper. The dielectric resonator is lifted from the ground plane to form an isolated dielectric resonator (DR) and an equivalent air-dielectric DR. The hybrid structure is excited by a slot-fed mechanism to obtain a smooth transition between each resonant mode ...
null Xiao-ming Wang, null Yong-chang Jiao, null Zi-bin Weng, null Fu-shun Zhang   +3 more
openaire   +1 more source

Broadband dielectric resonator antenna (DRA) design for mobile wireless applications

2011 Loughborough Antennas & Propagation Conference, 2011
This paper presents a broadband dielectric resonator antenna operating from 1.15 to 6 GHz to cover most of the existing wireless mobile standards. This antenna assembly is constructed by a printed monopole antenna and a defected cylindrical dielectric resonator.
Fauzi Elmegri, Chan H. See, Raed A. Abd-Alhameed, Issa T. E. Elfergani   +3 more
openaire   +1 more source

Study on the Effect of Dielectric Structure to the Cylindrical Dielectric Resonator Antenna (DRA)

2014
This paper presents the effect of variation of diameter and height of DR to the resonant frequency and radiation pattern of DRA. Analysis was carried out on the DR with diameter of 10.66 mm and height of 4.4 mm. The simulated and measured resonant frequencies were 3.67 and 3.77 GHz, respectively. The E-plane radiation pattern of CDRA was bi-directional
Mohamadariff Othman, Mohd Fadzil Ain, Ubaid Ullah, Seyi S. Olokede, Mohd Zaid Abdullah, Arjuna Marzuki, Wan Fahmin Faiz Wan Ali, Zainal Arifin Ahmad, Julie Juliewatty, Srimala Sreekantan   +9 more
openaire   +1 more source

Modified waveguide model (MWGM) for rectangular dielectric resonator antenna (DRA)

Microwave and Optical Technology Letters, 1998
Based on the concept of effective dimensions, a modification to the conventional waveguide model (CWGM), usually used to predict the resonant frequency of rectangular DRA, is introduced. Compared with the experimental results, it is found that this newly introduced MWGM yields more accurate results for the resonant frequency than the CWGM.
Yahia M. M. Antar, Dajun Cheng, Guy Seguin, Bruce Henry, Mike G. Keller   +4 more
openaire   +1 more source

Determination of resonant frequency of stacked cylindrical dielectric resonator antenna(DRA) for TM modes

2016 16th Mediterranean Microwave Symposium (MMS), 2016
Dielectric Resonators are being used as antennas in wireless communication systems presently due to advantages over microstrip like low loss particularly at higher frequencies. Also with ever increasing demand for bandwidth, wide banding has become one of the prime goals of antenna design. DRA wide banding can be done using stacking.
Rinki Ghosal, Bhaskar Gupta
openaire   +1 more source