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Top1. Introduction
Wireless biomedical antenna applications are getting expanding consideration these days, step by step turning into a concentration for research. Checking of different physiological boundaries, like temperature, glucose, and so forth, need wireless devices for use in biomedical applications. The Medical Implant Communication Services (MICS) and industrial, scientific, and medical (ISM) groups have been supported for these applications. MICS works in the 402-405MHz band. Regular frequencies considered for ISM applications are 27MHz, 433MHz, and 2.45 GHz (Smith et al.,1999). These wireless devices might keep away from long clinic stays using remote health monitoring (Soontornpipit et al., 2005). Such type of devices can screen the clinical information of a patient at home, working with determination, treatment, and sickness forecast, just as control of patient condition. Because of their practical low profile, microstrip antennas play a vital part in these applications. The many investigations on microstrip antennas for such applications display the developing interest for minimization. Numerous methods have been depicted in literature to scale down microstrip antennas (Liu, W.C., et., 2009). This is on the grounds that, by extending the current way, the size of antenna can be decreased. Numerous different strategies for scaling down are reported in (Huang, F.J., etal.,2011, Yeh, F.M.,et.al, 2008).
The biomedical applications depend on technology. However, the antennas play a very import role in biomedical applications. The antennas are used in implantable devices through telemedicine for long distance (P. S. Hall et al., 2006, F.-J. Huang et al., 2011, C. Liu et al., 2014, M. L. Scarpello et al.,2011). For implantable antennas, the miniaturization of antenna can be performed by considering the high dielectric constant substrate material (V. A. Shameena et al., 2012) and slots on the radiating patch (Mohammed N et al., 2015), physiological reasons (F. Yang et al., 2001), when an antenna is implemented in human body. In (Jianchun Xu et al., 2017), the properties of skin and the other tissues are collected from Gabriel et al. In (Kiourti, K. S. Nikita et al., 2012) to simulate the antenna for MICS and ISM band frequency. In (Naik, K.K.,etal.,2019, Anil Kumar et al., 2016, P. Amala Vijaya Sri et al., 2021, Kumar, B.K., etal.,2018, Chaitanya, R.P.S et al., 2018, Sundar etal., 2015, Manikanta M.H.V. etal.,2018, Govathoti, P.R., etal.,2018,) a circular planar inverted-F antenna with meandered and spiral stacked antenna was designed for medical applications. In (Dattatreya et al., 2019, Ahmad A et al., 2016, Ketavath, K.Net al., 2019, Imran Gani etal., 2016, Naik, K.K et al., 2021), antenna with CPW feed having asymmetric feed are presented for wireless applications. circular patch antenna and also in ground plane to operate at communication bands. In (C. Gabrieletal.,1996, Ketavath, K.N., etal.,2019, S. Gabriel etal.,1996, Sailaja,.etal.,2021 Asimina Kiourti et al., 2011, Kumar Naik etal.,2020, Sailaja B.Venkata Sai et al., 2020) a compact implantable antenna is presented to operate at ISM band biomedical applications.