Investigation of higher order modes excitation through F-shaped slot in rectangular dielectric resonator antenna for wideband circular polarization with broadside radiation characteristics

2018 ◽  
Vol 28 (6) ◽  
pp. e21281 ◽  
Author(s):  
Rajkishor Kumar ◽  
Raghvendra Kumar Chaudhary
Keyword(s):  
Circular Polarization ◽  
Dielectric Resonator ◽  
Higher Order ◽  
Dielectric Resonator Antenna ◽  
Radiation Characteristics ◽  
Higher Order Modes ◽  
Broadside Radiation ◽  
Rectangular Dielectric Resonator Antenna

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.

scholarly journals A Broadband Differential-Fed Dual-Polarized Hollow Cylindrical Dielectric Resonator Antenna for 5G Communications

Sensors ◽  
2020 ◽  
Vol 20 (22) ◽  
pp. 6448
Author(s):  
Xiaosheng Fang ◽  
Kangping Shi ◽  
Yuxiang Sun
Keyword(s):  
Dielectric Resonator ◽  
Impedance Bandwidth ◽  
Antenna Gain ◽  
Dielectric Resonator Antenna ◽  
Radiation Patterns ◽  
Higher Order Modes ◽  
Dual Polarized ◽  
Broadside Radiation ◽  
K9 Glass ◽  
Better Than

A broadband differential-fed dual-polarized hollow cylindrical dielectric resonator antenna (DRA) is proposed in this article. It makes use of the HEM111, HEM113, and HEM115 modes of the cylindrical hollow DRA. The proposed DRA is simply fed by two pairs of conducting strips and each pair of strips is provided with the out-of-phase signals. After introducing four disconnected air holes into the DRA, a broadband characteristic is achieved, with little effect on the antenna gain of its higher-order modes. To verify this idea, frosted K9-glass is applied to fabricate the hollow cylindrical DRA. The differential S-parameters, radiation patterns, and antenna gain of the DRA are studied. It is found that the proposed differential-fed dual-polarized DRA is able to provide a broad differential impedance bandwidth of ~68% and a high differential-port isolation better than ~46 dB. Moreover, symmetrical broadside radiation patterns are observed across the whole operating band. The proposed DRA covers the frequency bands including the 5G-n77 (3.4–4.2 GHz), 5G-n79 (4.4–5.0 GHz), WLAN-5.2 GHz (5.15–5.35 GHz), and WLAN-5.8 GHz (5.725–5.825 GHz), which can be used for 5G communications.

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