scholarly journals Investigations on feeding techniques of dielectric resonator antenna at 26 GHz

2020 ◽  
Vol 19 (2) ◽  
pp. 864
Author(s):  
Irfan Ali ◽  
Mohd Haizal Jamaluddin ◽  
Abinash Gaya
Keyword(s):  
Radiation Pattern ◽  
Dielectric Resonator ◽  
Return Loss ◽  
Radiation Efficiency ◽  
Efficiency Gain ◽  
Dielectric Resonator Antenna ◽  
Effect Of Feeding ◽  
Excitation Method ◽  
Slot Aperture ◽  
Feeding Techniques

<span>In this paper, Microstrip slot aperture and Microstrip line feeding techniques of dielectric resonator antenna are investigated and examined at 26 GHz for 5G applications. The dielectric resonator has a dielectric constant of 10 and etched on Rogers RT/Duroid 5880 substrate having a thickness of 0.254mm and relative permittivity of 2.2. The proposed structures are optimized and simulated using the commercial software CST Microwave studio. The effect of feeding techniques on the bandwidth, radiation efficiency, gain, VSWR and radiation pattern are also examined and analysed. The return loss, bandwidth, gain, radiation efficiency, VSWR and radiation pattern are presented and compared based on the excitation method employed for the studied DRA. The simulated results show that the microstrip slot aperture provides good performance and is suitable for 5G applications.</span>

scholarly journals Bandwidth Enhancement of Tri-band Rectangular Dielectric Resonator Antenna using Novel Offset Feed for WLAN/WIMAX Applications

2020 ◽  
Vol 9 (5) ◽  
pp. 2305-2308
Keyword(s):  
Dielectric Resonator ◽  
Microstrip Line ◽  
Return Loss ◽  
Radiation Efficiency ◽  
Antenna Design ◽  
Design Parameters ◽  
Dielectric Resonator Antenna ◽  
Bandwidth Enhancement ◽  
Frequency Bands ◽  
Rectangular Dielectric Resonator Antenna

In this article, a novel offset microstrip line feed Rectangular Dielectric Resonator Antenna is used for bandwidth enhancement. The parameters such as Bandwidth, Return Loss and Radiation efficiency are improved in the proposed antenna. A comparison is also shown for the proposed feed structure with and without conformal strips. The improvement in the bandwidth is observed from 25% to 65% by optimizing the antenna design parameters. It works in three frequency bands, that is, 2.03-3.69 GHz, 3.86-7.26 GHz, and 7.32-9.26 GHz. The proposed antenna is appropriate for WIMAX/WLAN applications.

Wideband Aperture-Coupled Dielectric Resonator Antenna at 5.8 GHz

2014 ◽  
Vol 69 (1) ◽  
Author(s):  
Mohd Haizal Jamaluddin ◽  
Guan Chai Eu ◽  
Sharul Kamal Abdul Rahim ◽  
Nur Izyani Dzulkipli
Keyword(s):  
Resonance Frequency ◽  
Frequency Response ◽  
Dielectric Resonator ◽  
Return Loss ◽  
Radiation Efficiency ◽  
Dielectric Resonator Antenna ◽  
Antenna Radiation ◽  
Polarization Effects ◽  
Suitable Combination

In this paper, a wideband aperture coupled dielectric resonator antenna (DRA) is presented using a rectangular dielectric resonator to increase operational bandwidth. By choosing a suitable combination of the DRA shape and slot, the resonance frequency from the aperture and DRA can be merged to achieve wideband frequency response without comprising antenna radiation efficiency and polarization. Effects of varying parameter in DRA size, slot dimension and feedline length on return-loss bandwidth are analysed.  The proposed technique yields 43% bandwidth in simulation and 21% bandwidth in measurement.

scholarly journals Dual Strip-Excited Dielectric Resonator Antenna with Parasitic Strips for Radiation Pattern Reconfigurability

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
M. Kamran Saleem ◽  
Majeed A. S. Alkanhal ◽  
Abdel Fattah Sheta
Keyword(s):  
Radiation Pattern ◽  
Dielectric Resonator ◽  
Ground Plane ◽  
Dielectric Substrate ◽  
Open Circuit ◽  
Center Frequency ◽  
Dielectric Resonator Antenna ◽  
Excitation Scheme ◽  
Feed Network ◽  
Microstrip Feed

A novel pattern reconfigurable antenna concept utilizing rectangular dielectric resonator antenna (DRA) placed over dielectric substrate backed by a ground plane is presented. A dual strip excitation scheme is utilized and both excitation strips are connected together by means of a 50 Ω microstrip feed network placed over the substrate. The four vertical metallic parasitic strips are placed at corner of DRA each having a corresponding ground pad to provide a short/open circuit between the parasitic strip and antenna ground plane, through which a shift of90°in antenna radiation pattern in elevation plane is achieved. A fractional bandwidth of approximately 40% at center frequency of 1.6 GHz is achieved. The DRA peak realized gain in whole frequency band of operation is found to be above 4 dB. The antenna configuration along with simulation and measured results are presented.

scholarly journals Spherical Dielectric Resonator Antenna for 5G Application

2021 ◽  
Author(s):  
Ashok kumar ◽  
Rajveer Singh Yaduvanshi
Keyword(s):  
Wireless Networks ◽  
Wireless Communication ◽  
Theoretical Analysis ◽  
Dielectric Resonator ◽  
Communication Systems ◽  
Return Loss ◽  
Wireless Communication Systems ◽  
Dielectric Resonator Antenna ◽  
Good Match ◽  
Good For

Abstract In this article Spherical DRA has been formulated , simulated and proto type developed. The detailed theoretical analysis along with simulations and measured results at 5.8 GHz have been presented in this article. The SDRA at 5.8 GHz covering 5G frewuenci band. The proposed design antenna provides the gain of 7.3 dB and return loss -25 dB. The measured results are in good match with simulated result. The proposed SDRA are good for 5G wireless networks, as well as other sub-6 band in wireless communication systems.

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.

scholarly journals Dual Band Notch, Compact, Low profile, Hybrid Ultra Wideband RDRA

2020 ◽  
Vol 10 (1) ◽  
pp. 166-169
Keyword(s):  
Radiation Pattern ◽  
Dielectric Resonator ◽  
Surface Current ◽  
Wide Band ◽  
Ultra Wideband ◽  
Dual Band ◽  
Ultra Wide Band ◽  
Impedance Bandwidth ◽  
Dielectric Resonator Antenna ◽  
Ground Structure

This paper presents a novel, compact Ultra Wide Band , Asymmetric Ring Rectangular Dielectric Resonator Antenna (ARRDRA), which is a unique combination of Thin Dielectric Resonator (DR), Fork shape patch and defective ground structure. The base of the proposed antenna is its Hybrid structure, which generates fundamental TM, TE and higher order modes that yields an impedance bandwidth of 119%. Proposed antenna provides a frequency range from 4.2 to 16.6 GHz with a stable radiation pattern and low cross polarization levels. Peak gain of 5.5 dB and average efficiency of 90% is obtained by the design. Antenna is elongated on a FR4 substrate of dimension 20 x 24x 2.168 mm3 and is particularly suitable for C band INSAT, Radio Altimeter, WLAN, Wi-Fi for high frequencies. Ease in fabrication due to simplicity, compactness, stable radiation pattern throughout the entire bandwidth are the key features of the presented design. Inclusion of Defective ground structure and asymmetric ring not only increases the bandwidth but also stabilize the gain and efficiency due to less surface current. Presented design launch an Ultra Wide Band antenna with sufficient band rejection at 4.48-5.34 and 5.64-8.33 GHz with stable radiation pattern and high gain.

scholarly journals A Series-Fed Linear Substrate-Integrated Dielectric Resonator Antenna Array for Millimeter-Wave Applications

2018 ◽  
Vol 2018 ◽  
pp. 1-6 ◽  
Author(s):  
Ke Gong ◽  
Xue Hui Hu ◽  
Peng Hu ◽  
Bing Jie Deng ◽  
You Chao Tu
Keyword(s):  
Antenna Array ◽  
Millimeter Wave ◽  
Dielectric Resonator ◽  
Return Loss ◽  
Printed Circuit Board ◽  
Circuit Board ◽  
Dielectric Resonator Antenna ◽  
Radiation Patterns ◽  
Feeding Structure ◽  
Broadside Radiation

A series-fed linear substrate-integrated dielectric resonator antenna array (SIDRAA) is presented for millimeter-wave applications, in which the substrate-integrated dielectric resonator antenna (SIDRA) elements and the feeding structure can be codesigned and fabricated using the same planar process. A prototype 4 × 1 SIDRAA is designed at Ka-band and fabricated with a two-layer printed circuit board (PCB) technology. Four SIDRAs are implemented in the Rogers RT6010 substrate using the perforation technique and fed by a compact substrate-integrated waveguide (SIW) through four longitudinal coupling slots within the Rogers RT5880 substrate. The return loss, radiation patterns, and antenna gain were experimentally studied, and good agreement between the measured and simulated results is observed. The SIDRAA example provides a bandwidth of about 10% around 34.5 GHz for 10 dB return loss and stable broadside radiation patterns with the peak gain of 10.5–11.5 dBi across the band.

Investigation on Feeding Techniques for Rectangular Dielectric Resonator Antenna in Higher-Order Mode for 5G Applications

2015 ◽  
Vol 781 ◽  
pp. 41-44 ◽  
Author(s):  
Nor Hidayu Shahadan ◽  
Muhammad Ramlee Kamarudin ◽  
Noor Ainniesafina Zainal ◽  
Jamal Nasir ◽  
Mohsen Khalily ◽  
...  
Keyword(s):  
Dielectric Resonator ◽  
Coplanar Waveguide ◽  
Dielectric Substrate ◽  
Higher Order ◽  
Dielectric Resonator Antenna ◽  
Order Mode ◽  
Ansoft Hfss ◽  
Rectangular Dielectric Resonator Antenna ◽  
Higher Order Mode ◽  
Feeding Techniques

This paper presents the investigation on rectangular dielectric resonator antenna (RDRA) using three different feeding techniques that are microstrip slot aperture (MSA), microstrip line (ML) and open-end coplanar waveguide (OECPW). In order to increase the RDRA size and gain for 5G applications, the higher-order mode was used to excite the RDRA at the frequency resonant 28 GHz. Duroid dielectric substrate was used with a thickness of 0.254 mm, a permittivity of 2.2 and a loss tangent of 0.0009. Verification of the comparison was done by simulation using Ansoft HFSS. The simulated result for reflection coefficients, bandwidth, gain, radiation pattern and E-field strength was analyzed and compared.

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