Compact Flower-Shaped Dual-Band Patch Antenna with Rectangular DGS for WLAN/WiMAX Applications
| Authors | A. Ambika , Paransree Chakraborty, S. Kalaivani |
| Affiliations |
Department of Electronics and Communication Engineering, B.S.Abdur Rahman Crescent Institute of Science and Technology, Vandalur-48, India |
| Е-mail | ambika@crescent.education |
| Issue | Volume 18, Year 2026, Number 3 |
| Dates | Received 15 March 2026; revised manuscript received 23 June 2026; published online 26 June 2026 |
| Citation | A. Ambika, Paransree Chakraborty, S. Kalaivani, J. Nano- Electron. Phys. 18 No 3, 03026 (2026) |
| DOI | https://doi.org/10.21272/jnep.18(3).03026 |
| PACS Number(s) | 84.40.Ba |
| Keywords | Microstrip patch antenna, Dual-band, Defected ground structure (DGS), WLAN (7) , WiMAX (7) , Gain enhancement. |
| Annotation |
This paper presents a compact dual-band microstrip patch antenna with a flower-shaped radiator and rectangular defected ground structure (DGS) for enhanced gain and bandwidth in wireless applications. Resonating at 2.46 GHz and 3.04 GHz, it targets WLAN (2.4-2.48 GHz), WiMAX (2.95-3.10 GHz), Sub-6 GHz, and IoT systems. The DGS beneath the feedline suppresses surface waves, improves current distribution, and boosts measured gains to 4 dBi and 5 dBi, respectively. Fabricated on FR-4 (εr = 4.4, h = 1.6 mm), it achieves return losses of – 45.16 dB and – 15.08 dB with stable radiation patterns. Compared to prior DGS and slotted designs, this single-layer structure offers superior gain, miniaturization, and fabrication simplicity for portable devices. |
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