TY - JOUR
T1 - Hybrid HMSIW Cavities Antenna With a Half-Pentagon Ring Slot for Bandwidth Enhancement
AU - Astuti, Dian Widi
AU - Wahyu, Yuyu
AU - Zulkifli, Fitri Yuli
AU - Rahardjo, Eko Tjipto
N1 - Funding Information:
This work was supported by the Publikasi Terindeks Internasional Research Grant-UI (PUTI) 2020 under Contract NKB-646/UN2.RST/HKP.05.00/2020 and Contract NKB-3316/UN2.RST/HKP.05.00/2020.
Publisher Copyright:
© 2013 IEEE.
PY - 2023
Y1 - 2023
N2 - A substrate-integrated waveguide (SIW) antenna is an implementation of a waveguide antenna in a microstrip antenna. The microstrip antenna, as a low-profile antenna, suffers from narrow impedance bandwidth. This paper proposes a novel bandwidth enhancement method for solving a narrow impedance bandwidth. Bandwidth enhancement was achieved by using quad-resonant frequencies. The quad-resonant frequencies are resulted from the hybrid half-mode substrate-integrated waveguide (HMSIW) cavities between the inner and outer cavities. The inner HMSIW cavity has a half-pentagon ring slot that disturbs the TE101-inner, TE102-inner, TE202-inner, and TE103-inner modes, whereas the outer HMSIW cavity consists of two outer quarter-mode substrate-integrated waveguide (QMSIW) cavities. The outer HMSIW cavity generated the TE102-outer and TE202-outer modes. The hybrid cavities were fed simultaneously using a port with a quarter-wavelength feed transmission line. The hybrid HMSIW cavities generated resonant frequencies that were close to each other. Additionally, this method was applied to the X-band frequency with a low-profile substrate. The simulated impedance bandwidth and peak realized gain was 33.86% (8.98-12.64 GHz) and 7.97 dBi, while the measured impedance bandwidth and peak gain were 31.83% (9.14 - 12.6 GHz) and 7.62 dBi, respectively. Strong agreement was observed between the measurement and simulation results.
AB - A substrate-integrated waveguide (SIW) antenna is an implementation of a waveguide antenna in a microstrip antenna. The microstrip antenna, as a low-profile antenna, suffers from narrow impedance bandwidth. This paper proposes a novel bandwidth enhancement method for solving a narrow impedance bandwidth. Bandwidth enhancement was achieved by using quad-resonant frequencies. The quad-resonant frequencies are resulted from the hybrid half-mode substrate-integrated waveguide (HMSIW) cavities between the inner and outer cavities. The inner HMSIW cavity has a half-pentagon ring slot that disturbs the TE101-inner, TE102-inner, TE202-inner, and TE103-inner modes, whereas the outer HMSIW cavity consists of two outer quarter-mode substrate-integrated waveguide (QMSIW) cavities. The outer HMSIW cavity generated the TE102-outer and TE202-outer modes. The hybrid cavities were fed simultaneously using a port with a quarter-wavelength feed transmission line. The hybrid HMSIW cavities generated resonant frequencies that were close to each other. Additionally, this method was applied to the X-band frequency with a low-profile substrate. The simulated impedance bandwidth and peak realized gain was 33.86% (8.98-12.64 GHz) and 7.97 dBi, while the measured impedance bandwidth and peak gain were 31.83% (9.14 - 12.6 GHz) and 7.62 dBi, respectively. Strong agreement was observed between the measurement and simulation results.
KW - A half-pentagon ring slot
KW - bandwidth enhancement
KW - half-mode substrate-integrated waveguide antenna
KW - hybrid cavities
KW - quad-resonant
UR - http://www.scopus.com/inward/record.url?scp=85149369412&partnerID=8YFLogxK
U2 - 10.1109/ACCESS.2023.3247604
DO - 10.1109/ACCESS.2023.3247604
M3 - Article
AN - SCOPUS:85149369412
SN - 2169-3536
VL - 11
SP - 18417
EP - 18426
JO - IEEE Access
JF - IEEE Access
ER -