Wideband Circularly Polarized MIMO Antenna for High Data Wearable Biotelemetric Devices

This paper presents a miniaturized circularly polarized multiple-input multiple-output (MIMO) antenna for wearable biotelemetric devices. The proposed MIMO antenna consists of four elements, which are placed orthogonally to the adjacent elements. The proposed antenna has a wideband response [10-dB bandwidth of 2210 MHz (fractional bandwidth (FBW) = 92.08%) in free space and 10-dB bandwidth of 2200 MHz (FBW = 91.66%) when worn on human-body], this frequency range covers the important and unlicensed industrial, scientific and medical (ISM) band (2.40–2.48 GHz). The antenna exhibits a wideband 3-dB circularly polarized bandwidth of 1300 MHz (FBW=54.16%) and 1040 MHz (FBW=43.33%) in free space and when worn on the body, respectively. The optimized antenna in free space (on-body) has an envelop correlation coefficient (ECC) less than 0.21 (0.23), a diversity gain (DG) greater than 9.77 dB (9.71 dB), a multiplexing efficiency (ME) greater than −0.85 dB (−0.63 dB), and a channel capacity loss (CCL) less than 0.13 bps/Hz (0.13 bps/Hz). The stable radiation, high gain, high efficiency, and good MIMO properties in free space and on human-body make the proposed antenna a suitable choice for use in high data wearable biotelemetric devices.

[1]  Ilangko Balasingham,et al.  Ultrawideband Technology in Medicine: A Survey , 2012, J. Electr. Comput. Eng..

[2]  D. Werner,et al.  A Compact, Wideband Circularly Polarized Co-designed Filtering Antenna and Its Application for Wearable Devices With Low SAR , 2015, IEEE Transactions on Antennas and Propagation.

[3]  Aiting Wu,et al.  A Quad-Element UWB-MIMO Antenna with Band-Notch and Reduced Mutual Coupling Based on EBG Structures , 2018 .

[4]  Muhammad Ramlee Kamarudin,et al.  A Low Profile, Dual-band, Dual Polarized Antenna for Indoor/Outdoor Wearable Application , 2019, IEEE Access.

[5]  P.S. Hall,et al.  Antennas and propagation for body centric wireless communications , 2012, IEEE/ACES International Conference on Wireless Communications and Applied Computational Electromagnetics, 2005..

[6]  Amjad Iqbal,et al.  Metamaterial-Based Highly Isolated MIMO Antenna for Portable Wireless Applications , 2018, Electronics.

[7]  Chang Won Jung,et al.  Transparent and Flexible Antenna for Wearable Glasses Applications , 2016, IEEE Transactions on Antennas and Propagation.

[8]  Yang Hao,et al.  Numerical Characterization and Modeling of Subject-Specific Ultrawideband Body-Centric Radio Channels and Systems for Healthcare Applications , 2012, IEEE Transactions on Information Technology in Biomedicine.

[9]  Ashim Kumar Biswas,et al.  Compact wearable MIMO antenna with improved port isolation for ultra‐wideband applications , 2019, IET Microwaves, Antennas & Propagation.

[10]  Yen-Sheng Chen,et al.  A Low-Profile Wearable Antenna Using a Miniature High Impedance Surface for Smartwatch Applications , 2016, IEEE Antennas and Wireless Propagation Letters.

[11]  Amjad Iqbal,et al.  Electromagnetic Bandgap Backed Millimeter-Wave MIMO Antenna for Wearable Applications , 2019, IEEE Access.

[12]  Marco A. Antoniades,et al.  Compact EBG-Backed Planar Monopole for BAN Wearable Applications , 2017, IEEE Transactions on Antennas and Propagation.

[13]  Hai Zhou,et al.  A Compact and Low-Profile MIMO Antenna Using a Miniature Circular High-Impedance Surface for Wearable Applications , 2018, IEEE Transactions on Antennas and Propagation.

[14]  Amjad Iqbal,et al.  Mutual Coupling Reduction Using F-Shaped Stubs in UWB-MIMO Antenna , 2018, IEEE Access.

[15]  S. Maity,et al.  A Compact Dual-Band Dual-Polarized Omnidirectional Antenna for On-Body Applications , 2019, IEEE Transactions on Antennas and Propagation.

[16]  Sixing Yin,et al.  Compact Dual-Polarized UWB Quasi-Self-Complementary MIMO/Diversity Antenna With Band-Rejection Capability , 2016, IEEE Antennas and Wireless Propagation Letters.

[17]  Amjad Iqbal,et al.  Dielectric resonator antenna with top loaded parasitic strip elements for dual‐band operation , 2019, Microwave and Optical Technology Letters.

[18]  Guy A. E. Vandenbosch,et al.  Wearable Ultrawideband Technology—A Review of Ultrawideband Antennas, Propagation Channels, and Applications in Wireless Body Area Networks , 2018, IEEE Access.

[19]  Asimina Kiourti,et al.  Implantable and ingestible medical devices with wireless telemetry functionalities: A review of current status and challenges , 2014, Bioelectromagnetics.

[20]  Yong Zhu,et al.  Compact, Highly Efficient, and Fully Flexible Circularly Polarized Antenna Enabled by Silver Nanowires for Wireless Body-Area Networks , 2017, IEEE Transactions on Biomedical Circuits and Systems.

[21]  Haiyan Piao,et al.  Circularly polarised MIMO ground radiation antennas for wearable devices , 2017 .

[22]  Hyoungsuk Yoo,et al.  Multi-Band Antenna System for Skin Implant , 2016, IEEE Microwave and Wireless Components Letters.

[23]  Yang Hao,et al.  Numerical Characterization and Link Budget Evaluation of Wireless Implants Considering Different Digital Human Phantoms , 2009, IEEE Transactions on Microwave Theory and Techniques.

[24]  Mazliham Mohd Su’ud,et al.  Mutual Coupling Reduction Using Hybrid Technique in Wideband Circularly Polarized MIMO Antenna for WiMAX Applications , 2019, IEEE Access.

[25]  Douglas H. Werner,et al.  Design and Experimental Investigation of a Compact Circularly Polarized Integrated Filtering Antenna for Wearable Biotelemetric Devices , 2016, IEEE Transactions on Biomedical Circuits and Systems.

[26]  Nam Kim,et al.  A Broadband Circularly Polarized Fabry-Perot Resonant Antenna Using A Single-Layered PRS for 5G MIMO Applications , 2019, IEEE Access.

[27]  Hyoungsuk Yoo,et al.  A Wideband Circularly Polarized Conformal Endoscopic Antenna System for High-Speed Data Transfer , 2017, IEEE Transactions on Antennas and Propagation.

[28]  B. Wang,et al.  Design of Compact Single-Layer Textile MIMO Antenna for Wearable Applications , 2018, IEEE Transactions on Antennas and Propagation.