A Low-Profile Crescent Shaped Circular Patch Antenna for Sub-6 GHz Applications
| Authors | Nageswara Rao Lavuri1, Loya Surendra2, S. Varalakshmi3, Suresh Dannana4 |
| Affiliations |
1Department of ECE, CVR College of Engineering, Hyderabad, Telangana, India 2Department of ECE, Mallareddy (MR) Deemed to be University, Medchal, Telangana, India 3Nano Computing Department, 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 | suresh.d@gmrit.edu.in |
| Issue | Volume 18, Year 2026, Number 2 |
| Dates | Received 05 February 2026; revised manuscript received 20 April 2026; published online 29 April 2026 |
| Citation | Nageswara Rao Lavuri, Loya Surendra, S. Varalakshmi, et al., J. Nano- Electron. Phys. 18 No 2, 02016 (2026) |
| DOI | https://doi.org/10.21272/jnep.18(2).02016 |
| PACS Number(s) | 84.40.Ba |
| Keywords | Antenna (6) , Crescent-shaped, Reflection coefficient (3) , Bandwidth, Sub-6 GHz 5G, N77 and N78 bands. |
| Annotation |
Compact-sized circular patch antennas are used in satellites, mobile networks, radars, and other current and future wireless communications applications. In this paper, a low-profile crescent-shaped circular patch antenna with an inset feed for sub-6 GHz wire-free communication applications is examined. The basic design of a crescent-shaped circular patch antenna included a full ground. Following that, a defective ground structure is used to achieve a broader bandwidth. HFSS is used to examine a crescent-shaped microstrip circular patch antenna. A 3 dBi gain of 3.05 dB was achieved at 3.5 GHz, with a reflection coefficient of – 22.7 dB and a fractional bandwidth of 42.85 %. The crescent-shaped circular patch antenna contains a dimension of 31 28 1.6 mm3 and is printed on a FR4 epoxy dielectric material. The crescent-shaped CPA is simulated using FR4 epoxy as a dielectric with a loss tangent of 0.02, dielectric constant of 4.4, and thickness of 1.6 mm. PEC (perfect electric conducting) material is chosen as a conducting layer. Based on the simulation results, the circle patch antenna in the shape of a crescent is good for N77 and N78 sub-6GHz uses. The proposed antenna is optimized through a series of iterative procedures. The crescent-shaped CPA is composed of a concentric circular patch joined by a crescent-shaped patch. The proposed crescent-shaped CPA is simulated using the finite element method (HFSS). From the results it is a fact that the proposed crescent shaped antenna is well suited for sub-6GHz 5G applications. |
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