Miniaturized monopole antenna with dual inverted L shape slot and shorting pins for biotelemetry applications

This research shows how a small, low-profile monopole antenna was designed, built, and tested for performance in the medical field for Internet of Things applications. The suggested antenna is especially designed for integration into wearable and implantable medical devices, and it runs in the 2.45 GHz ISM (Industrial, Scientific, and Medical) frequency range. The antenna uses shorting pins and stub structures for improved impedance matching and downsizing. It is appropriate for biomedical applications with limited space since it is made on a flame-resistant FR4 substrate and has small dimensions of 22 mm × 15 mm × 1 mm. To evaluate the antenna’s performance, extensive computer simulations and experimental tests are carried out. The antenna has excellent impedance matching with a low return loss of −35 dB. In the 2.2–2.6 GHz frequency band, the gain and directivity are measured at 2.279 dB and 2.546 dBi, respectively. With a radiation efficiency of 80.27%, the design guarantees dependable wireless signal transmission. Testing the antenna in liquid phantoms that look like human tissue to make sure it works in real life proves that it is suitable for both in-body and on-body applications. In addition to standard antennas, this study looks at different types of biomedical antennas, such as circularly polarized in-body antennas for next-generation implants, Yagi antennas and SIW-based designs for wearable applications, and dipole antennas with polarization diversity for capsule endoscopy. The suggested antenna works well with Internet of Things-based medical monitoring devices, which makes sending real-time health data easier. It also offers a very sensitive, non-invasive, and affordable way to keep an eye on patients and make diagnoses. The experimental findings and manufactured prototypes show this antenna’s potential for smart implants, wireless medical telemetry, and real-time patient monitoring. This study improves connection in healthcare applications and advances wireless medical IoT technology by resolving current design issues.