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2026-08-03
A Dual-Band Reconfigurable Active Antenna for IoT-Enabled Health Monitoring Systems
By
Progress In Electromagnetics Research C, Vol. 172, 156-165, 2026
Abstract
In this study, a dual-band active antenna integrated with an IoT healthcare monitoring system for measuring body temperature, heart rate, and SpO2 is presented. A MAX30100 sensor and NodeMCU ESP32-CAM enable data acquisition and cloud-based monitoring through Ubidots. The antenna, fabricated on a Rogers Duroid RO3003TM substrate (37 × 42 × 1.52 mm3), operates at 2.4 GHz and 5.8 GHz using an inverted U-shaped slot and a PIN diode for frequency reconfiguration. Received Signal Strength Indicator (RSSI) measurements showed improved signal strength from -35 to -40 dBm compared to -40 to -45 dBm for the on-board antenna. Experimental evaluation on three volunteers aged 21, 36, and 55 years demonstrated reliable physiological monitoring, with heart rate values of 84-90 BPM and temperature readings of 30-36°C. The results validate the suitability of the proposed antenna for reliable IoT-based healthcare applications.
Citation
Ramar Ahila Priyadharshini, Ganesan Prema, Nellaiappan Ramanan, and Venkatesan Sathyan, "A Dual-Band Reconfigurable Active Antenna for IoT-Enabled Health Monitoring Systems," Progress In Electromagnetics Research C, Vol. 172, 156-165, 2026.
doi:10.2528/PIERC26060804
References

1. Rejeb, Abderahman, Karim Rejeb, Horst Treiblmaier, Andrea Appolloni, Salem Alghamdi, Yaser Alhasawi, and Mohammad Iranmanesh, "The Internet of Things (IoT) in healthcare: Taking stock and moving forward," Internet of Things, Vol. 22, 100721, 2023.
doi:10.1016/j.iot.2023.100721        Google Scholar

2. Qian, Zhiqin, Yuchen Lin, Weiji Jing, Zhekai Ma, Hao Liu, Ruixue Yin, Zezhi Li, Zhuming Bi, and Wenjun Zhang, "Development of a real-time wearable fall detection system in the context of Internet of Things," IEEE Internet of Things Journal, Vol. 9, No. 21, 21999-22007, 2022.
doi:10.1109/jiot.2022.3181701        Google Scholar

3. Fu, Yixing, Chunjiang Yu, Yan Zhang, Danjv Lv, Yue Yin, Jing Lu, and Dan Lv, "Classification of birdsong spectrograms based on DR-ACGAN and dynamic convolution," Ecological Informatics, Vol. 77, 102250, 2023.
doi:10.1016/j.ecoinf.2023.102250        Google Scholar

4. Madhu, Sarath, Sooraj Padunnavalappil, Prarthana Puthenpurayil Saajlal, Vipindev Adat Vasudevan, and Johnson Mathew, "Powering up an IoT-enabled smart home: A solar powered smart inverter for sustainable development," International Journal of Software Science and Computational Intelligence (IJSSCI), Vol. 14, No. 1, 1-21, 2022.
doi:10.4018/IJSSCI.300362        Google Scholar

5. Liang, Jinyan, Min Tian, Yang Liu, and Jie Zhou, "Coverage optimization of soil moisture wireless sensor networks based on adaptive Cauchy variant butterfly optimization algorithm," Scientific Reports, Vol. 12, No. 1, 11687, 2022.
doi:10.1038/s41598-022-15689-3        Google Scholar

6. Islam, M., Mohammad Tariqul Islam, Ali F. Almutairi, Gan Kok Beng, Norbahiah Misran, and Nowshad Amin, "Monitoring of the human body signal through the internet of things (IoT) based lora wireless network system," Applied Sciences, Vol. 9, No. 9, 1884, 2019.
doi:10.3390/app9091884        Google Scholar

7. Zhang, Wei, Wenran Li, Xiaoyu Feng, Chen Zhao, Yan Li, and Xiaoyi Liao, "Design of a compact dual-band and dual-mode wearable antenna for WBAN applications," Sensors, Vol. 25, No. 11, 3361, 2025.
doi:10.3390/s25113361        Google Scholar

8. Munawar, Hafiz Suliman, "An overview of reconfigurable antennas for wireless body area networks and possible future prospects," International Journal of Wireless and Microwave Technologies (IJWMT), Vol. 10, No. 2, 1-8, 2020.
doi:10.5815/ijwmt.2020.02.01        Google Scholar

9. BharathiDevi, Boyapati and Jayendra Kumar, "Small frequency range discrete bandwidth tunable multiband MIMO antenna for radio/LTE/ISM-2.4 GHz band applications," AEU --- International Journal of Electronics and Communications, Vol. 144, 154060, 2022.
doi:10.1016/j.aeue.2021.154060        Google Scholar

10. Nikam, Pritam B., Jayendra Kumar, V. Sivanagaraju, and Achinta Baidya, "Dual-band reconfigurable EBG loaded circular patch MIMO antenna using defected ground structure (DGS) and PIN diode integrated branch-lines (BLs)," Measurement, Vol. 195, 111127, 2022.
doi:10.1016/j.measurement.2022.111127        Google Scholar

11. Arivazhagan, S., R. Ahila Priyadharishini, and D. M. Shermiln Reena, "Design and simulation of reconfigurable Yagi-Uda antenna for cognitive radio," 2013 International Conference on Circuits, Power and Computing Technologies (ICCPCT), 793-797, Nagercoil, India, 2013.
doi:10.1109/ICCPCT.2013.6528943

12. Kumar, J., B. Basu, and F. A. Talukdar, "Modeling of a PIN diode RF switch for reconfigurable antenna application," Scientia Iranica, Vol. 26, No. 3, 1714-1723, 2019.
doi:10.24200/sci.2018.20110        Google Scholar

13. Kumar, Jayendra, Banani Basu, Fazal Ahmed Talukdar, and Arnab Nandi, "Stable-multiband frequency reconfigurable antenna with improved radiation efficiency and increased number of multiband operations," IET Microwaves, Antennas & Propagation, Vol. 13, No. 5, 642-648, 2019.
doi:10.1049/iet-map.2018.5602        Google Scholar

14. Abdulhussein, Akram Jabbar, Malik Jasim Farhan, and Ghusoon M. Ali, "Design and implementation of a frequency reconfigurable antenna using PIN switch for sub-6 GHz applications," Open Engineering, Vol. 13, No. 1, 20220453, 2023.
doi:10.1515/eng-2022-0453        Google Scholar

15. Karthika, K., K. Kavitha, A. Aparna, A. Divona Mary, and N. Rithanya, "Design of compact frequency reconfigurable antenna for sub-6 GHz 5G application," 2022 8th International Conference on Advanced Computing and Communication Systems (ICACCS), 793-798, Coimbatore, India, 2022.
doi:10.1109/ICACCS54159.2022.9785094

16. Shah, S. M., M. F. M. Daud, Z. Z. Abidin, F. C. Seman, S. A. Hamzah, N. Katiran, and F. Zubir, "Frequency reconfiguration mechanism of a PIN diode on a reconfigurable antenna for LTE and WLAN applications," International Journal of Electrical and Computer Engineering (IJECE), Vol. 8, No. 3, 1893-1902, 2018.
doi:10.11591/ijece.v8i3.pp1893-1902        Google Scholar

17. Hussain, Niamat, Wahaj Abbas Awan, Syeda Iffat Naqvi, Adnan Ghaffar, Abir Zaidi, Syed Aftab Naqvi, Adnan Iftikhar, and Xue Jun Li, "A compact flexible frequency reconfigurable antenna for heterogeneous applications," IEEE Access, Vol. 8, 173298-173307, 2020.
doi:10.1109/access.2020.3024859        Google Scholar

18. Ibrahim, Norwahidah, Razali Tomari, Wan Nurshazwani Wan Zakaria, and Nurmiza Othman, "Non-contact heart rate monitoring analysis from various distances with different face regions," International Journal of Electrical and Computer Engineering (IJECE), Vol. 7, No. 6, 3030-3036, 2017.
doi:10.11591/ijece.v7i6.pp3030-3036        Google Scholar

19. Bhagchandani, Khushboo and D. Peter Augustine, "IoT based heart monitoring and alerting system with cloud computing and managing the traffic for an ambulance in India," International Journal of Electrical and Computer Engineering (IJECE), Vol. 9, No. 6, 5068-5074, 2019.
doi:10.11591/ijece.v9i6.pp5068-5074        Google Scholar

20. Misbahuddin, Syed, Malik Munjed Ibrahim, Ayman Mahmoud Alnajar, Basheer Qutaibah Alolabi, and Abdullah Fahad Ammar, "Automatic patients' vital sign monitoring by single board computer (SBC) based MPI cluster," 2019 2nd International Conference on Computer Applications & Information Security (ICCAIS), 1-5, Riyadh, Saudi Arabia, 2019.
doi:10.1109/CAIS.2019.8769551

21. Yusof, Mas Azalya and Yuan Wen Hau, "Mini home-based vital sign monitor with android mobile application (myVitalGear)," 2018 IEEE-EMBS Conference on Biomedical Engineering and Sciences (IECBES), 150-155, Sarawak, Malaysia, 2018.
doi:10.1109/IECBES.2018.8626639

22. Hodge, Abhiyash, Hrishikesh Humnabadkar, and Akshay Bidwai, "Wireless heart rate monitoring and vigilant system," 2018 3rd International Conference for Convergence in Technology (I2CT), 1-5, Pune, India, 2018.
doi:10.1109/I2CT.2018.8529443

23. Shu, Minglei, Meiyu Tang, Ming Yang, and Nuo Wei, "The vital signs real-time monitoring system based on internet of things," 2017 4th International Conference on Information Science and Control Engineering (ICISCE), 747-751, Changsha, China, 2017.
doi:10.1109/ICISCE.2017.160

24. Rajanna, Rama Reddy, Sriraam Natarajan, and Prabhu Ravikala Vittal, "An IoT Wi-Fi connected sensor for real time heart rate variability monitoring," 2018 3rd International Conference on Circuits, Control, Communication and Computing (I4C), 1-4, Bangalore, India, 2018.
doi:10.1109/CIMCA.2018.8739323

25. Kalaithasan, Keshihakumar, N. A. M. Radzi, and H. Z. Abidin, "Internet of Things Application in Monitoring Sick Building Syndrome," Indonesian Journal of Electrical Engineering and Computer Science, Vol. 12, No. 2, 505-512, 2018.
doi:10.11591/ijeecs.v12.i2.pp505-512        Google Scholar

26. Irmansyah, Muhammad, Era Madona, Anggara Nasution, and Roni Putra, "Low cost heart rate portable device for risk patients with IoT and warning system," 2018 International Conference on Applied Information Technology and Innovation (ICAITI), 46-49, Padang, Indonesia, 2018.
doi:10.1109/ICAITI.2018.8686761

27. Selem, Enas, Mohammed Fatehy, Sherine M. Abd El-Kader, and Hamed Nassar, "THE (temperature heterogeneity energy) aware routing protocol for IoT health application," IEEE Access, Vol. 7, 108957-108968, 2019.
doi:10.1109/access.2019.2931868        Google Scholar

28. Ganesh, E. N., "Health monitoring system using raspberry pi and IoT," Oriental Journal of Computer Science and Technology, Vol. 12, No. 1, 8-13, 2019.
doi:10.13005/ojcst12.01.03        Google Scholar

29. Zakaria, Nor Aini, Fatin Nadia Binti Mohd Saleh, and Mohd Azhar Abdul Razak, "IoT (Internet of Things) based infant body temperature monitoring," 2018 2nd International Conference on BioSignal Analysis, Processing and Systems (ICBAPS), 148-153, Kuching, Malaysia, 2018.
doi:10.1109/ICBAPS.2018.8527408

30. Mohamad Hadis, Nor Shahanim, Muhammad Nazri Amirnazarullah, Muhammad Mahdi Jafri, and Samihah Abdullah, "IoT based patient monitoring system using sensors to detect, analyse and monitor two primary vital signs," Journal of Physics: Conference Series, Vol. 1535, No. 1, 012004, Penang, Malaysia, 2020.
doi:10.1088/1742-6596/1535/1/012004

31. Pawar, Meghraj N., Deeplaxmi V. Niture, and S. P. Mahajan, "Design and implementation of frequency reconfigurable antenna for wireless applications," 2019 IEEE International Conference on Advanced Networks and Telecommunications Systems (ANTS), 1-6, Goa, India, 2019.
doi:10.1109/ANTS47819.2019.9117929