A Dual-Band F-Slotted Circular Patch Antenna for S-Band and C-Band Wireless Applications
| Authors | Nageswara Rao Lavuri1 , Loya Surendra2 , M. Subalatha3 , V. Jagan Naveen4 |
| Affiliations |
1Department of ECE, CVR College of Engineering, Hyderabad, Telangana, India 2Department of ECE, Mallareddy (MR) Deemed to be University, Medchal Telangana, India 3Department of Electronics and Communication Engineering, Saveetha School of Engineering, SIMATS Engineering, 602105 Chennai, India 4Department of Electronics and Communication Engineering, GMR Institute of Technology (GMRIT) – Deemed to be University, 532127 Rajam, Andhra Pradesh, India |
| Е-mail | jagannaveen.v@gmrit.edu.in |
| Issue | Volume 18, Year 2026, Number 3 |
| Dates | Received 05 March 2026; revised manuscript received 19 June 2026; published online 26 June 2026 |
| Citation | Nageswara Rao Lavuri, Loya Surendra, M. Subalatha, et al., J. Nano- Electron. Phys. 18 No 3, 03017 (2026) |
| DOI | https://doi.org/10.21272/jnep.18(3).03017 |
| PACS Number(s) | 84.40.Ba |
| Keywords | Circular patch antenna (CPA), Reflection co-efficient, Dual band, Gain (10) , Microwave C-band and S-Band. |
| Annotation |
Due to the low-profile and multiband properties circular patch antennas (CPA’s) have become more popular. The proposed F-slotted CPA enhances performance attributes including bandwidth, gain, and miniaturization by using an F-shaped slot in the patch and a partial ground plane. An inset feed is used to design a dual band F-slotted CPA for S-band and C-band applications. F-slotted CPA is fed by using line feeding technique with an impedance of 50 Ω. The top plane of the F-slotted CPA has a modified circular patch, while the ground plane is a partial ground plane. The parametric analysis of the F-slotted CPA is obtained to verify the performance of the proposed antenna. A finite element method tool, Ansoft HFSSv13 is used to simulate the F-slotted circular patch antenna (CPA). The proposed F-slotted CPA resonates at 2.8 GHz and 4.8 GHz frequencies with obtained S11 of – 25.8 dB, – 14.6 dB respectively and offers VSWR of 1.1 and 1.4 at 2.8 GHz and 4.8 GHz respectively Fractional bandwidths of 28.5 % (2.5-3.3 GHz) and 10.41 % (4.5-5 GHz) are achieved at 2.8 GHz and 4.8 GHz frequencies respectively, with S11 of – 25.8 dB and – 14.6 dB. 3 dBi gain of 3 dBi has been observed. F-slotted CPA occupies an area of 40 40 1.6 mm3. These results make the F-slotted CPA suitable for S-band and C-band applications. |
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List of References |
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