International Journal on Science and Technology

E-ISSN: 2229-7677   •   Impact Factor: 9.88

A Widely Indexed Open Access Peer Reviewed Multidisciplinary Bi-monthly Scholarly International Journal

Call for Paper Volume 16 Issue 3 July-September 2025 Submit your research before last 3 days of September to publish your research paper in the issue of July-September.
Submit Research Paper Join as a Reviewer

Plagiarism is checked by the leading plagiarism checker TurnItIn

Call for Paper

Volume 16 Issue 3
July-September 2025

Submit your research paper

Indexing Partners
Academia Advanced Sciences Index Bielefeld Academic Search Engine CiteSeer DRJI Google Scholar Independent Search Engine & Directory Network ISI (International Scientific Indexing) Issuu Mendeley Research Networks
RefSeek ResearcherId - Thomson Reuters ResearchGate Scirus Scribd Semantic Scholar UTeM - Universiti Teknikal Malaysia Melaka Wiki for Call for Papers WorldCat Zenodo

Performance Analysis of Patch Modification Techniques for Microstrip Antennas in 5.8 GHz IoT Applications

Author(s) Mr. Arnold Ian Kasinamubare, Mr. Tawanda Michael Mukwewa
Country Zimbabwe
Abstract This paper presents the design and simulation of a microstrip patch antenna for Internet of Things (IoT) applications in the 5.8 GHz ISM band, using an FR4 substrate to ensure cost-effective prototyping. A baseline inset-fed rectangular patch is compared with three optimized geometries: an inset-modified patch, a notched patch, and a U-shaped slotted patch. Simulations were conducted in CST Studio Suite using the frequency domain solver. Important performance metrics that were evaluated include return loss (S₁₁), gain, bandwidth, directivity, and radiation efficiency. This inset-optimized design yielded the best results with a radiation efficiency above 57%, a return loss of –49.8 dB, a bandwidth of 250 MHz, and a gain of 3.97 dB. The notched design also showed good performance, offering bandwidth (237 MHz) and strong impedance matching (–44.8 dB) with only minor gain trade-offs. Despite having the highest directivity, the slotted patch's lower efficiency (54%) and gain (3.55 dB) limited its applicability for low-power IoT nodes. All of the designs outperformed the 150 MHz target bandwidth, confirming that FR4-based antennas are feasible for small IoT systems. The study demonstrates how simple geometric changes can improve performance while maintaining low cost and ease of fabrication.
Keywords Microstrip antenna, IoT, patch modification, notches, slots, inset feed, FR4, 5.8 GHz.
Field Engineering
Published In Volume 16, Issue 3, July-September 2025
Published On 2025-07-08
DOI https://doi.org/10.71097/IJSAT.v16.i3.6867
Short DOI https://doi.org/g9sx56
View / Download PDF File

Share this


CrossRef

CrossRef DOI is assigned to each research paper published in our journal.

IJSAT DOI prefix is
10.71097/IJSAT

Downloads
Research Paper Format Copyright Permission Form and Undertaking Form Cover Page Vol 16 Isu 3Cover Page Vol 16 Isu 2Cover Page Vol 16 Isu 1

All research papers published on this website are licensed under Creative Commons Attribution-ShareAlike 4.0 International License, and all rights belong to their respective authors/researchers.

CC-BY-SA Open Access

About IJSAT
Fees & Payment
Current Issue
Publication Archive 		Submit Research Paper
Track Submission Status
Publication Guidelines
Publication Ethics
Peer Review & Plagiarism 		Join as a Reviewer
Editors & Reviewers
Reviewer Referral Program
Get Reviewer Membership Certi. 		Website/Journal Policies
Usage Policy
Content Policies
Privacy Policy
Contact Us Message on WhatsApp +91-9687-182-185 editor@ijsat.org