Journal ArticleDOI
Dual polarized triple band hybrid MIMO cylindrical dielectric resonator antenna for LTE2500/WLAN/WiMAX applications
TLDR
In this paper, a triple band hybrid multi-input-multi-output MIMO cylindrical dielectric resonator antenna with high isolation is examined, which includes two symmetric folded microstrip line feeding structures along with CDRA at two different ends of substrate.Abstract:
In this communication, triple band hybrid multi-input-multi-output MIMO cylindrical dielectric resonator antenna CDRA with high isolation is examined. The proposed MIMO antenna includes two symmetric folded microstrip line feeding structures along with CDRA at two different ends of substrate. Two inverted L-shaped strips on the ground plane are used to enhance the isolation S12<-15 dB as well as to generates 2.7 GHz frequency band. Metallic strip on the ground plane act as an electromagnetic reflector and also enhance the isolation between two antennas S12<-20 dB. Archetype of proposed MIMO antenna design has been fabricated and tested to validate the simulated results. The proposed antenna operates at three different frequency bands 2.24-2.38 GHz, 2.5-3.26 GHz, and 4.88-7.0 GHz S11<-6 dB with the fractional bandwidth 6.06%, 26.4%, and 35.7%, respectively. Folded microstrip lines generate λ4 path delay between the electric field lines and originate circular polarization characteristics in the frequency range 5.55-5.75 GHz with the fractional bandwidth of 3.55%. In order to satisfy the different performance requirement of MIMO antenna such as envelop correlation coefficient, mean effective gain, effective diversity gain, peak gain are also examined. The proposed antenna is found suitable for LTE2500, WLAN, and WiMAX applications. © 2016 Wiley Periodicals, Inc. Int J RF and Microwave CAE, 2016.read more
Citations
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Journal ArticleDOI
Dielectric resonator based circularly polarized MIMO antenna with polarization diversity
Journal ArticleDOI
A Compact Circularly Polarized MIMO Dielectric Resonator Antenna Over Electromagnetic Band-Gap Surface for 5G Applications
TL;DR: The measured results demonstrated that the proposed singly fed DRA with EBG on the ground plate is suitable for implementing wideband circular polarized MIMO antennas in a compact size.
Journal ArticleDOI
Dielectric resonator antennas: An application oriented survey
TL;DR: In this article, a comprehensive investigation of research carried out on dielectric resonator antennas (DRAs) in the last three and half decades, in an application-oriented approach, is presented.
Journal ArticleDOI
Mutual Coupling Reduction Using Hybrid Technique in Wideband Circularly Polarized MIMO Antenna for WiMAX Applications
Javed Iqbal,Usman Illahi,M. I. Sulaiman,Muhammad Alam,Mazliham Mohd Su'ud,Mohd Najib Mohd Yasin +5 more
TL;DR: A novel wideband circularly polarized multiple-input multiple-output (MIMO) dielectric resonator antenna (DRA) has been proposed for worldwide interoperability for microwave access (WiMAX) applications and the mutual coupling between closely placed DRA units at $0.5\lambda has been significantly reduced by using a new hybrid technique.
References
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Journal ArticleDOI
Dielectric resonator antennas—a review and general design relations for resonant frequency and bandwidth
R.K. Mongia,Prakash Bhartia +1 more
TL;DR: In this paper, a comprehensive review of the modes and the radiation characteristics of open dielectric resonators (DRs) of different shapes, such as cylindrical, spherical, and rectangular, is presented.
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Understanding and measuring circular polarization
TL;DR: An introduction to the topic of circular polarization is necessary to promote an understanding of the propagation aspects of modern communications system design and a simple laboratory-based project is described that requires the design, fabrication, and measurement of a crossed dipole antenna.
Journal ArticleDOI
Mutual Coupling Reduction in Patch Antenna Arrays by Using a Planar EBG Structure and a Multilayer Dielectric Substrate
TL;DR: In this paper, a planar electromagnetic band gap (EBG) structure based on a truncated frequency selective surface (FSS) grounded slab is proposed for patch antenna arrays, keeping both the element separation smaller than for grating lobes avoidance and the patch antenna size large enough to have a good antenna directivity.
Journal ArticleDOI
Implementation of Slotted Meander-Line Resonators for Isolation Enhancement in Microstrip Patch Antenna Arrays
TL;DR: In this article, a slotted meander-line resonator (SMLR) is used to block the surface current at the resonant frequency of two patch antennas coupled along H-plane and operating at a frequency of 4.8 GHz.
Journal ArticleDOI
Linear-/Circular-Polarization Designs of Dual-/Wide-Band Cylindrical Dielectric Resonator Antennas
Xiao Sheng Fang,Kwok Wa Leung +1 more
TL;DR: In this article, a dual-mode cylindrical DRA was proposed for both linearly and circularly polarized cases, where the covariance matrix adaptation evolutionary strategy (CMA-ES) was used to determine the dimensions of the DRA.
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