TY - JOUR
T1 - Broadband Ground-Embedded Dielectric Resonator Antenna with Half-Space Coverage for 5G Applications
AU - Guo, Lei
AU - Qiao, Yipei
AU - Yang, Wenwen
AU - Leung, Kwok Wa
PY - 2025/2
Y1 - 2025/2
N2 - This paper presents a novel ground-embedded dielectric resonator (DR) antenna (DRA) which has a broad bandwidth and wide half-space coverage, based on the concept of complementary superimposition. By using the embedded ground, horizontal and vertical electric currents can be introduced. Their radiation can be combined with that of the original DRA, significantly boosting radiation at low elevation angles. This results in broad half-power beamwidths (HPBWs) of ~180° in two elevation planes. The design achieves wide half-space coverage across a wide bandwidth by exciting two adjacent modes. To validate the theory, the proposed antenna was fabricated and measured. Measured results show a broad usable impedance bandwidth of 2.35-3.55 GHz (40.68%), with HPBWs of ~180°. The maximum gains are 2.54 and 2.13 dBi at θ = 0° (boresight) and θ = 90°, respectively. Due to its embedded structure, our antenna is compact, making it promising for 5G applications that generally require both wide beamwidth and impedance bandwidth. © 2024 IEEE.
AB - This paper presents a novel ground-embedded dielectric resonator (DR) antenna (DRA) which has a broad bandwidth and wide half-space coverage, based on the concept of complementary superimposition. By using the embedded ground, horizontal and vertical electric currents can be introduced. Their radiation can be combined with that of the original DRA, significantly boosting radiation at low elevation angles. This results in broad half-power beamwidths (HPBWs) of ~180° in two elevation planes. The design achieves wide half-space coverage across a wide bandwidth by exciting two adjacent modes. To validate the theory, the proposed antenna was fabricated and measured. Measured results show a broad usable impedance bandwidth of 2.35-3.55 GHz (40.68%), with HPBWs of ~180°. The maximum gains are 2.54 and 2.13 dBi at θ = 0° (boresight) and θ = 90°, respectively. Due to its embedded structure, our antenna is compact, making it promising for 5G applications that generally require both wide beamwidth and impedance bandwidth. © 2024 IEEE.
KW - Dielectric resonator antenna
KW - half-power beamwidth
KW - wide beamwidth
KW - wideband
UR - http://www.scopus.com/inward/record.url?scp=85213487775&partnerID=8YFLogxK
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85213487775&origin=recordpage
U2 - 10.1109/TAP.2024.3520305
DO - 10.1109/TAP.2024.3520305
M3 - RGC 21 - Publication in refereed journal
SN - 0018-926X
VL - 73
SP - 1191
EP - 1196
JO - IEEE Transactions on Antennas and Propagation
JF - IEEE Transactions on Antennas and Propagation
IS - 2
ER -