scholarly journals Dual Band-Notched Rectangular Dielectric Resonator Antenna with Tunable Characteristic

Electronics ◽  
2019 ◽  
Vol 8 (5) ◽  
pp. 472
Author(s):  
Beijia Liu ◽  
Jinghui Qiu ◽  
Lijia Chen ◽  
Guoqiang Li
Keyword(s):  
Dielectric Resonator ◽  
Impedance Matching ◽  
Ground Plane ◽  
Dual Band ◽  
Dielectric Resonator Antenna ◽  
Antenna Size ◽  
Resonant Modes ◽  
Wideband Systems ◽  
Rectangular Dielectric Resonator Antenna ◽  
Rectangular Notch

A dual band-notched reconfigurable dielectric resonator antenna (DRA) is proposed in this paper. A rectangular dielectric resonator excited by stepped offset microstrip feedline generates multiple resonant modes for wideband performance. Moreover, the typical stepped impedance feedline and partial ground plane with one rectangular notch are adopted for contributing for better impedance matching. On this basis, a five-line coupler resonator (FLCR) composed by inverted U-shaped and 山-shaped structures is introduced as a bandstop filter in the microstrip feedline, and dual rejected bands are created. Tunable notched frequencies are achieved by the varactor between these two structures. The proposed antenna size is 24 × 28 × 5.637 mm3. For the presented work, both simulated and measured results for the proposed tunable antenna ranging from 5.3 to 5.84 GHz and from 8.74 to 8.98 GHz within the wide bandwidth of 6.06 GHz are presented, demonstrating the accuracy of this design. There capabilities make the proposed antenna applicable for wideband systems with the requirement of avoiding interferences.

scholarly journals Circularly polarized rectangular dielectric resonator antenna excited by an off-set conformal metal strip

2019 ◽  
Vol 15 (2) ◽  
pp. 902 ◽  
Author(s):  
U. Illahi ◽  
J. Iqbal ◽  
M. I. Sulaiman ◽  
M Alam ◽  
M. S. Mazliham ◽  
...  
Keyword(s):  
Dielectric Resonator ◽  
Impedance Matching ◽  
Metal Strip ◽  
Antenna Design ◽  
Far Field ◽  
Dielectric Resonator Antenna ◽  
Simulation Techniques ◽  
Resonant Modes ◽  
Rectangular Dielectric Resonator Antenna ◽  
Good Agreement

<p class="Abstract">A rectangular dielectric resonator antenna (DRA) has been excited by an off-set single conformal metal strip. By using such excitation technique two degenerate resonant modes, TExδ11 and TEy1δ1 of the rectangular DRA have been excited to achieve circular polarization (CP). A CP bandwidth of ~ 5.2% in conjunction with a wide impedance matching bandwidth of ~ 54% has been provided by the proposed DRA configuration. The antenna design has been simulated using computer simulation technology (CST). Antenna prototype has been built to verify the impedance matching bandwidth. Far field parameters have been optimized and verified using two simulation techniques in CST i.e. finite integration technique (FIT) and finite element method (FEM). A good agreement between the simulated and measured result has been observed for S11. Similarly a very good resemblance between the far field results from FIT and FEM have been demonstrated.</p>

scholarly journals Throughput Measurement of a Dual-Band MIMO Rectangular Dielectric Resonator Antenna for LTE Applications

Sensors ◽  
2017 ◽  
Vol 17 (12) ◽  
pp. 148 ◽  
Author(s):  
Jamal Nasir ◽  
Mohd. Jamaluddin ◽  
Aftab Ahmad Khan ◽  
Muhammad Kamarudin ◽  
Chee Yen Leow ◽  
...  
Keyword(s):  
Dielectric Resonator ◽  
Dual Band ◽  
Dielectric Resonator Antenna ◽  
Rectangular Dielectric Resonator Antenna

Dual-band mimo rectangular dielectric resonator antenna with high port isolation for LTE applications

2016 ◽  
Vol 59 (1) ◽  
pp. 44-49 ◽  
Author(s):  
Aftab Ahmad Khan ◽  
Rizwan Khan ◽  
Sajid Aqeel ◽  
Jalil Ur Rehman Kazim ◽  
Jawad Saleem ◽  
...  
Keyword(s):  
Dielectric Resonator ◽  
Dual Band ◽  
Dielectric Resonator Antenna ◽  
Rectangular Dielectric Resonator Antenna

scholarly journals Dual Notched-Band Crescent Moon Dielectric Resonator Antenna

2021 ◽  
Vol 25 (1) ◽  
pp. 11-19
Author(s):  
Mohamed Debab ◽  
◽  
Amina Bendaoudi ◽  
Zoubir Mahdjoub ◽  
◽  
...  
Keyword(s):  
Frequency Band ◽  
Dielectric Resonator ◽  
Satellite Communication ◽  
Ground Plane ◽  
Ultra Wideband ◽  
Dual Band ◽  
Impedance Bandwidth ◽  
Dielectric Resonator Antenna ◽  
Printed Antenna ◽  
Antenna Structure

In this article, a dual-band notched ultra-wideband (UWB) dielectric resonator antenna is proposed. The antenna structure consists of Crescent Moon Dielectric Resonator (CMDR) fed by a stepped microstrip monopole printed antenna, partial ground plane, and an I-shaped stub. The Crescent Moon dielectric resonator is placed on the microstrip monopole printed antenna to achieve wide impedance bandwidth, and the I-shaped stub is utilized to improve impedance bandwidth for the WiMAX band. A comprehensive parametric study is carried out using HFSS software to achieve the optimum antenna performance and optimize the bandwidth of the proposed antenna. The entire band is useful with two filtered bands at 5.5 GHz and 6.8 GHz by the creation of notches. The band’s rejection, WLAN band (5.2–5.7 GHz), and the downlink frequency band of ITU 7 GHz-band for satellite communication (6.5–7.3 GHz) is realized by inserting G-shaped and C-shaped slots in the ground. The simulation results demonstrate that the proposed CMDR antenna achieves satisfactory UWB performance, with an impedance bandwidth of around 88.7%, covers the frequency band of 3.2 - 8.3 GHz, excluding a rejection band for the WLAN and ITU 7 GHz band. The CMDR is simulated using HFSS and CST high-frequency simulators.

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