Alexandria Engineering Journal | |
Wideband circularly polarized aperture coupled DRA array with sequential-phase feed at X-band | |
Hussein Attia1  Mourad S. Ibrahim2  Qiang Cheng3  Abdelhady Mahmoud4  | |
[1] Corresponding author at: College of Engineering, Communications and Networks Department, Prince Sultan University, Riyadh 11568, Saudi Arabia.;Communications and Networks Department, College of Engineering, Prince Sultan University, Riyadh, Saudi Arabia;Electrical Engineering Department, King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia;State Key Laboratory of Millimeter Wave- Southeast University, Nanjing, China; | |
关键词: Aperture coupled DRA; Circularly polarized; Sequential-phase feed; Sequential rotation; | |
DOI : | |
来源: DOAJ |
【 摘 要 】
A novel 2 × 2 wideband dielectric resonator antenna (DRA) array with circular polarization and fed with a sequential-phase feeding network at the X-band is presented in this paper. The proposed DRA array is fed by an aperture coupled feeding network. Each DRA element is constructed by joining two identical pieces of half-cylindrical shape; those are shifted with respect to each other to produce two orthogonal modes, in order to achieve a broadband circular polarization and wideband impedance matching simultaneously. The rigorous analysis and optimization processes throughout this paper are carried out numerically. The proposed array demonstrates a maximum realized gain of 10.3 dB. The measured matching bandwidth ranges from 8 to 12 GHz (40%), with about 37% 3-dB axial ratio bandwidth within the matching bandwidth. The quadruple DRA elements array is fabricated, and its scattering parameters and far-fields performance are measured to validate the numerical results. Acceptable agreement between the simulated and measured results is accomplished. It is demonstrated that the proposed antenna is a potential candidate for radar and satellite applications at X-band.
【 授权许可】
Unknown