Design and Implementation of a C-Slotted Dual-Band Antenna for Sub-6 GHz and Radar Applications

This research presents the design and implementation of a C-slotted dual-band antenna optimized for sub-6 GHz wireless communication and radar applications. The proposed antenna integrates a C-shaped slot into the patch structure, enabling dual-band operation, specifically covering the 2.82–4.7 GHz range for sub-6 GHz communication and 8.9–10 GHz range for radar systems. The compact design achieves a gain of 6.55 dB at 3.9 GHz and 2 dB at 9.5 GHz, with return loss (S11) values of −48.01 dB at 3.9 GHz and −16.75 dB at 9.5 GHz. The antenna demonstrates a very good performance in terms of return loss, gain, and radiation pattern across both bands. It’ s simple, cost-effective design makes it a strong candidate for emerging wireless communication and radar technologies, offering reliable dual-band operation.