scholarly journals Wideband tetraskelion dielectric resonator antenna

2020 ◽  
Vol 19 (2) ◽  
pp. 879
Author(s):  
Irfan Ali ◽  
Mohd Haizal Jamaluddin ◽  
Abinash Gaya
Keyword(s):  
Dielectric Constant ◽  
Dielectric Resonator ◽  
Relative Dielectric Constant ◽  
High Gain ◽  
Impedance Bandwidth ◽  
Dielectric Resonator Antenna ◽  
Simulation And Optimization ◽  
Fifth Generation ◽  
Low Profile ◽  
Slot Coupling

In this paper, a wideband tetraskelion dielectric resonator antenna with a low profile and high gain for the upcoming fifth generation (5G) communication applications is presented. The proposed DR antenna has been designed at the operating frequency of 26 GHz. The designed antenna is etched on Rogers RT/Duroid 5880 substrate of dielectric constant =2.2, with a thickness of 0.254mm. The DR material having a relative dielectric constant ( ) of 10 is used for a proposed design. The antenna was fed by using a 50-ohm microstrip line with slot coupling. The simulation and optimization have been performed by using the commercial software CST Microwave studio. The proposed structure exhibits a wide impedance bandwidth of 19.6% for |S11|< -10 dB from 24.5 to 29.6 GHz and peak gain of 9 dBi with the efficiency of 95% for complete bandwidth. The results show that an antenna is low profile and can be used for 5G wireless communication Applications.

scholarly journals A Dielectric Resonator Antenna with Enhanced Gain and Bandwidth for 5G Applications

Sensors ◽  
2020 ◽  
Vol 20 (3) ◽  
pp. 675 ◽  
Author(s):  
Irfan Ali ◽  
Mohd Haizal Jamaluddin ◽  
Abinash Gaya ◽  
Hasliza A. Rahim
Keyword(s):  
Dielectric Resonator ◽  
High Gain ◽  
Impedance Bandwidth ◽  
Antenna Gain ◽  
Dielectric Resonator Antenna ◽  
Antenna Structure ◽  
Fifth Generation ◽  
Full Wave ◽  
5G Systems ◽  
The Internet Of Things

In this paper, a dielectric resonator antenna (DRA) with high gain and wide impedance bandwidth for fifth-generation (5G) wireless communication applications is proposed. The dielectric resonator antenna is designed to operate at higher-order T E δ 15 x mode to achieve high antenna gain, while a hollow cylinder at the center of the DRA is introduced to improve bandwidth by reducing the quality factor. The DRA is excited by a 50   Ω microstrip line with a narrow aperture slot. The reflection coefficient, antenna gain, and radiation pattern of the proposed DRAs are analyzed using the commercially available full-wave electromagnetic simulation tool CST Microwave Studio (CST MWS). In order to verify the simulation results, the proposed antenna structures were fabricated and experimentally validated. Measured results of the fabricated prototypes show a 10-dB return loss impedance bandwidth of 10.7% (14.3–15.9GHz) and 16.1% (14.1–16.5 GHz) for DRA1 and DRA2, respectively, at the operating frequency of 15 GHz. The results show that the designed antenna structure can be used in the Internet of things (IoT) for device-to-device (D2D) communication in 5G systems.

Low-profile U-shaped DRA for ultra-wideband applications

2016 ◽  
Vol 9 (3) ◽  
pp. 621-627 ◽  
Author(s):  
Idris Messaoudene ◽  
Tayeb A. Denidni ◽  
Abdelmadjid Benghalia
Keyword(s):  
Dielectric Resonator ◽  
Ground Plane ◽  
Ultra Wideband ◽  
Impedance Bandwidth ◽  
Dielectric Resonator Antenna ◽  
Radiation Patterns ◽  
Wide Bandwidth ◽  
Operating Band ◽  
Low Profile ◽  
Measurement Results

In this paper, a microstrip-fed U-shaped dielectric resonator antenna (DRA) is simulated, designed, and fabricated. This antenna, in its simple configuration, operates from 5.45 to 10.8 GHz. To enhance its impedance bandwidth, the ground plane is first modified, which leads to an extended bandwidth from 4 to 10.8 GHz. Then by inserting a rectangular metallic patch inside the U-shaped DRA, the bandwidth is increased more to achieve an operating band from 2.65 to 10.9 GHz. To validate these results, an experimental antenna prototype is fabricated and measured. The obtained measurement results show that the proposed antenna can provide an ultra-wide bandwidth and a symmetric bidirectional radiation patterns. With these features, the proposed antenna is suitable for ultra-wideband applications.

scholarly journals A MIMO H-shape Dielectric Resonator Antenna for 4G Applications

2018 ◽  
Vol 10 (2) ◽  
pp. 648
Author(s):  
S. Salihah ◽  
M. H. Jamaluddin ◽  
R. Selvaraju ◽  
M. N. Hafiz
Keyword(s):  
Electrical Properties ◽  
Dielectric Resonator ◽  
Return Loss ◽  
Multiple Input Multiple Output ◽  
Impedance Bandwidth ◽  
Dielectric Resonator Antenna ◽  
Multiple Input ◽  
Input Multiple Output ◽  
Good Potential ◽  
Slot Coupling

In this article, a Multiple-Input-Multiple-Output (MIMO) H-shape Dielectric Resonator Antenna (DRA) is designed and simulated at 2.6 GHz for 4G applications. The proposed structure consists of H-shape DRA ( =10) which is mounted on FR4 substrate ( =4.6), and feed by two different feeding mechanisms. First, microstrip with slot coupling as Port 1. Second, coaxial probe as Port 2. The electrical properties of the proposed MIMO H-shape DRA in term of return loss, bandwidth and gain are completely obtained by using CST Microwave Studio Suite Software. The simulated results demonstrated a return loss more than 20 dB, an impedance bandwidth of 26 % (2.2 – 2.9 GHz), and gain of 6.11 dBi at Port 1. Then, a return loss more than 20 dB, an impedance bandwidth of 13 % (2.2 – 2.7 GHz), and gain of 6.63 dBi at Port 2. Both ports indicated impedance bandwidth more than 10 %, return loss lower than 20 dB, and gain more than 10 dBi at 2.6 GHz. The simulated electrical properties of the proposed design show a good potential for LTE applications.

Compact and Circularly Polarized Hemispherical DRA for C-Band Applications

Frequenz ◽  
2019 ◽  
Vol 73 (7-8) ◽  
pp. 227-234 ◽  
Author(s):  
Shabya Gupta ◽  
Vinay Killamsetty ◽  
Monika Chauhan ◽  
Biswajeet Mukherjee
Keyword(s):  
Dielectric Constant ◽  
Fractal Geometry ◽  
Dielectric Resonator ◽  
Close Agreement ◽  
Axial Ratio ◽  
Dissipation Factor ◽  
Impedance Bandwidth ◽  
Dielectric Resonator Antenna ◽  
Circularly Polarized ◽  
Tan Δ

Abstract A novel circular polarized Hemispherical Dielectric Resonator Antenna (HDRA) has been proposed in this paper. The Circular Polarization (CP) and enhanced gain characteristics of the antenna are attributed to the fractal geometry applied on the HDRA. Probe coupling is used to excite the proposed antenna which resonates at 4.16 GHz and offers an impedance bandwidth of 2.6 GHz (57 %), from 3.3 to 5.9 GHz. The gain and efficiency of the antenna are 6.38 dBi and 93 % respectively at 4.16 GHz. The Proposed DRA is designed using FR-4 material having a dielectric constant (εr ) of 4.3 and dissipation factor (tan δ) of 0.025. The designed Antenna is experimentally verified and offers a close agreement between simulated and measured results. This Antenna offers a 3-dB Axial Ratio (AR) bandwidth of 1.1 GHz from 4.2 to 5.3 GHz.

scholarly journals Design of High Gain Novel Dielectric Resonator Antenna Array for 24 GHz Short Range Radar Systems

2018 ◽  
Vol 7 (4) ◽  
pp. 12-18
Author(s):  
A. Haddad ◽  
M. Aoutoul ◽  
K. Rais ◽  
M. Essaaidi ◽  
M. Faqir ◽  
...  
Keyword(s):  
Time Domain ◽  
Dielectric Resonator ◽  
Short Range ◽  
High Efficiency ◽  
Fdtd Method ◽  
High Gain ◽  
Impedance Bandwidth ◽  
Dielectric Resonator Antenna ◽  
Automotive Radar ◽  
24 Ghz

in this work we present a 16x1 array’ elements of a high gain Novel shape designed Dielectric Resonator Antenna (NDRA), having a low dielectric constant value of 18, for wide band (WB) and narow band (NB) 24 GHz automotive Short Range Radar (SRR) applications. The proposed NDRA array is feed by an efficient microstrip network feeding mechanism and presents wide impedance bandwidth (426 MHz), high gain (20.9 dBi), high efficiency (96%) and directional radiation pattern at 24 GHz with narrow angular beam-width of 6.4°. Computed NDRA array results allow the proposed design to be practical for the next automotive radar generations. Parametric studies have been analyzed using the Finite Difference Time Domain (FDTD) method of the CST-MW time domain solver and results, of the optimal structure, have been validated by the Finite Element Method (FEM) used in HFSS electromagnetic (EM) simulator.

scholarly journals Metallic Reflector-Based X-Band Circularly Polarized Hollow Dielectric Resonator Antenna for High Gain in UWB Applications

2021 ◽  
Author(s):  
SACHIN KUMAR YADAV ◽  
Amanpreet Kaur ◽  
Rajesh Khanna
Keyword(s):  
Circular Polarization ◽  
Dielectric Resonator ◽  
Near Field ◽  
Axial Ratio ◽  
High Gain ◽  
Impedance Bandwidth ◽  
Dielectric Resonator Antenna ◽  
Circularly Polarized ◽  
X Band ◽  
Peak Gain

Abstract A circularly polarized hollow dielectric resonator antenna (CPHDRA) is designed for X-band applications. Rectangular dielectric resonator (RDR) is used as a radiator element, fed by a quarter-wave transformer (QWT) feedline. By performance of the RDR antenna, an air cylindrical rod structure is extracted from RDR to enhance the gain and impedance bandwidth. Two parasitic strips are placed on the top of the RDR to achieve circular polarization with reported ≤ 3-dB axial ratio (AR) bandwidth for X-band applications. In this article, UWB antenna covers range from 2.74 to 10.4GHz by using asymmetrical defective ground structure (DGS). In near field of the dielectric resonator, three different radiating modes namely HE11δ, HE21δ, HE23δ, and HE32δ are at 4.4, 6, 8.8, and 9.9 GHz. For the generation of circular polarization (CP), two orthogonal modes are generated at 8.8 and 9.9 GHz as per XZ and YZ planes. It has reported 23.8 % (8 to 10.1 GHz) of 3-dB AR bandwidth. The simulated and measured impedance bandwidths are 118.46 % and 121.12 % along with a peak gain of 6.55 dB without the use of a metallic reflector. By using a metallic reflector suspended in the bottom side of the substrate with a distance of 13.1mm is reported along with the peak gain of 9.8 dBi.

scholarly journals Design of Ultra-wideband Dielectric Resonator Antenna

2021 ◽  
Vol 16 ◽  
pp. 194-197
Author(s):  
Guan-Pu Pan ◽  
Jiun-Da Lin ◽  
Tsung-lin Li ◽  
Jwo-Shiun Sun
Keyword(s):  
Dielectric Resonator ◽  
High Gain ◽  
Hybrid Structure ◽  
Ultra Wideband ◽  
Impedance Bandwidth ◽  
Dielectric Resonator Antenna ◽  
Antenna Structure ◽  
Compact Size ◽  
New Material ◽  
Low Permittivity

In this paper, the new dielectric resonator antenna (DRA) is implemented by replacing the traditional dielectric resonator with a new material with low permittivity for ultra-wideband (UWB) application is presented and studied. A hybrid structure DRA was designed with parasitic slot to enhance the impedance bandwidth. The bandwidth met the specification of MB-OFDM for the bandwidth (3.168 GHz - 4.752 GHz). Finally, another antenna structure was designed. By applying the microstrip feed line, UWB and radiation characteristics are achieved. From the measured results, the proposed DRA showed good radiation pattern, high gain, wide bandwidth (3.03 GHz -10.7 GHz) and compact size. The bandwidth met the specification of MB-OFDM (3.168 GHz -10.56 GHz).

scholarly journals Radiation Characteristics Enhancement of Dielectric Resonator Antenna Using Solid/Discrete Dielectric Lenses

2015 ◽  
Vol 4 (1) ◽  
pp. 1 ◽  
Author(s):  
H. A. E. Malhat ◽  
S. H. Zainud-Deen ◽  
W. M. Hassan ◽  
K. H. Awadalla
Keyword(s):  
Dielectric Constant ◽  
Dielectric Resonator ◽  
Dielectric Material ◽  
High Gain ◽  
Dielectric Resonator Antenna ◽  
Spherical Lens ◽  
Radiation Characteristics ◽  
Dielectric Resonator Antennas ◽  
Different Types ◽  
Dielectric Lenses

The radiation characteristics of the dielectric resonator antennas (DRA) is enhanced using different types of solid and discrete dielectric lenses. One of these approaches is by loading the DRA with planar superstrate, spherical lens, or by discrete lens (transmitarray). The dimensions and dielectric constant of each lens are optimized to maximize the gain of the DRA. A comparison between the radiations characteristics of the DRA loaded with different lenses are introduced. The design of the dielectric transmitarray depends on optimizing the heights of the dielectric material of the unit cell. The optimized transmitarray achieves 7 dBi extra gain over the single DRA with preserving the circular polarization. The proposed antenna is suitable for various applications that need high gain and focused antenna beam.

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