Linear Antenna Array Design with Dolph-Chebyshev Method for High Gain and Side-Lobe Reduction in Wireless Systems
| Authors | A. Srinag1 , S. Aruna2 , K. Srinivasa Naik3 |
| Affiliations |
1Department of ECE, Vasireddy Venkatadri Institute of Technology, Guntur, Andhra Pradesh, India 2Department of ECE, Andhra University College of Engineering Andhra Pradesh, India 3Department of ECE, Vignan’s Institute of Information Technology, Visakhapatnam, Andhra Pradesh, India |
| Е-mail | srinag.rs@andhrauniversity.edu.in |
| Issue | Volume 18, Year 2026, Number 1 |
| Dates | Received 02 December 2025; revised manuscript received 16 February 2026; published online 25 February 2026 |
| Citation | A. Srinag, S. Aruna, K. Srinivasa Naik, J. Nano- Electron. Phys. 18 No 1, 01014 (2026) |
| DOI | https://doi.org/10.21272/jnep.18(1).01014 |
| PACS Number(s) | 84.40.Ba |
| Keywords | Dolph-Chebyshev, Fifth Generation (5G), IoT Applications. |
| Annotation |
This paper presents a linear antenna array design employing the Dolph-Chebyshev method to achieve high gain while effectively minimizing side-lobe levels for IoT applications. The proposed approach strikes a balance between key parameters, allowing for the narrowest beam width at a specified side-lobe level and vice versa. Various techniques exist to reduce side-lobe levels, thereby conserving power and enhancing service quality. However, this study focuses on a 7-element array designed using the Dolph-Chebyshev method, offering a structured comparison of radiation patterns at different side-lobe levels. The analysis reveals that increasing directivity and gain does not always correlate with reduced side-lobe levels, emphasizing the trade-offs involved. To validate the approach, a microstrip comb-line antenna array is designed for 5 GHz IoT applications, implemented on a Rogers RO4003C substrate with dimensions of 200 50 mm2. The array achieves a gain of 13 dBi while maintaining side-lobe levels below – 18 dB at 5 GHz. The results demonstrate the suitability of this design for IoT-based wireless communication systems, ensuring efficient radiation characteristics while maintaining a compact form factor. This study highlights the importance of optimizing antenna parameters to achieve the desired performance for modern wireless networks. |
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