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2025-08-06
X/Ku-Band Antenna with Integrated Back Cavity for Directional Radiation
By
Progress In Electromagnetics Research C, Vol. 158, 171-177, 2025
Abstract
This paper presents a dual-band antenna design for X/Ku bands, featuring asymmetrical feed ports, slot-loaded radiating patches, and a reconfigured defect ground structure (DGS) integrated with a back air cavity to achieve 32.11% reduced patch area and directional radiation. By coplanar waveguide (CPW) feeding and vertical interconnect accesses (VIAs) connecting all metal layers, the antenna miniaturizes via extended surface current paths and broadens bandwidth via DGS. Simulation and measurement show operating bands of 8.30-12.29 GHz (38.75% fractional bandwidth) and 12.91-14.21 GHz (9.58%), with measured gains aligning well with simulations. Compared to traditional dual-band designs, this work reduces physical size by over 30% while maintaining high gain, making it suitable for compact satellite communication, radar, and microwave energy systems.
Citation
Jiawei Wang, Tao Tang, Thamer S. Almoneef, and Maged A. Aldhaeebi, "X/Ku-Band Antenna with Integrated Back Cavity for Directional Radiation," Progress In Electromagnetics Research C, Vol. 158, 171-177, 2025.
doi:10.2528/PIERC25012105
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