A wideband implantable antenna for 2.4 GHz ISM band biomedical application

In this study, a single-fed wideband implantable antenna that operates at the 2.4 GHz ISM band is designed for biomedical applications. The impedance bandwidth enhancement is achieved by combining two modes. One is the fundamental mode of center microstrip antenna, and anther additional mode is attained by the outside loop. The simulated impedance bandwidth and radiation patterns are studied in a cubic skin phantom. The simulated impedance bandwidth below −10 dB ranges from 2.24 to 2.59 GHz (35%). The proposed antenna mainly radiates in the off-body direction and has a peak gain of −20.8 dBi at boresight. The influence of dielectric properties and implant depth are also discussed. The sensitivity studies indicate the stability of our antenna.

[1]  M. Samet,et al.  Parametric study on the dielectric properties of biological tissues , 2015, 2015 16th International Conference on Sciences and Techniques of Automatic Control and Computer Engineering (STA).

[2]  Konstantina S. Nikita,et al.  A Broadband Implantable and a Dual-Band On-Body Repeater Antenna: Design and Transmission Performance , 2014, IEEE Transactions on Antennas and Propagation.

[3]  Shaoqiu Xiao,et al.  Compact Dual-Band Antenna for Implantable Devices , 2012, IEEE Antennas and Wireless Propagation Letters.

[4]  Li-Jie Xu,et al.  Dual-Band Implantable Antenna With Open-End Slots on Ground , 2012, IEEE Antennas and Wireless Propagation Letters.

[5]  Ching-Hsing Luo,et al.  Compact broadband stacked implantable antenna for biotelemetry with medical devices , 2006, 2006 IEEE Annual Wireless and Microwave Technology Conference.

[6]  Zhi-Jie Yang,et al.  A Circularly Polarized Implantable Antenna for 2.4-GHz ISM Band Biomedical Applications , 2017, IEEE Antennas and Wireless Propagation Letters.

[7]  A. Kiourti,et al.  A Review of Implantable Patch Antennas for Biomedical Telemetry: Challenges and Solutions [Wireless Corner] , 2012, IEEE Antennas and Propagation Magazine.

[8]  Cynthia M. Furse.  Biomedical telemetry: Today's opportunities and challenges , 2009, 2009 IEEE International Workshop on Antenna Technology.

[9]  Shaoqiu Xiao,et al.  Capacitively Loaded Circularly Polarized Implantable Patch Antenna for ISM Band Biomedical Applications , 2014, IEEE Transactions on Antennas and Propagation.

[10]  Eric Chow,et al.  Implantable RF Medical Devices: The Benefits of High-Speed Communication and Much Greater Communication Distances in Biomedical Applications , 2013, IEEE Microwave Magazine.