Implantable CPW fed M Shaped Antenna for Biomedical Applications

摘要

Implantable medical device has become very popular in medical sector for proper diagnosis and treatment. If, this devices are wireless, then it will very effective for remote communication. For this wireless communication, antenna is a suitable thing. So, this paper presents the design Implantable CPW fed M-shaped antenna for biomedical applications. Coplanar waveguide fed technique is used with ground plane in this antenna. The antenna is designed by Alumina ceramic (Al_2O_3) substrate and Copper ground plane with dimensions (8mm × 7mm × 0.85mm) and Silicon material of 0.1mm thickness is used as a coating for human body safety. This antenna works under 2.42 GHz resonate frequency of ISM band (2.40-2.48 GHz). The bandwidth percent of the antenna at -10dB is 7.66%. The return loss characteristic of the antenna is -56.96 dB. Based on the conductivity and permittivity of different tissue (such as: Muscle, Fat. Skin) a simple 3D human body phantom structure is designed for implantation of CPW fed antenna. The antenna is designed and simulated with the help of CST software. The antenna parameters such as: Return loss, Smith Chart, VSWR, Gain, SAR have been discussed in the paper.