A wearable circulator-like circularly polarised antenna for full-duplex wireless body area network applications

被引:0
作者
Thakur, Ajeet [1 ]
Sharma, Ashwani [1 ]
Zuazola, Ignacio J. Garcia [2 ]
机构
[1] Indian Inst Technol Ropar, Elect Engn Dept, Rupnagar, Punjab, India
[2] London Metropolitan Univ, Sch Comp & Digital Media, London, England
关键词
antenna testing; antennas; microwave antennas; MIMO ANTENNA; TEXTILE ANTENNA; SAR REDUCTION; COMPACT; DESIGN;
D O I
10.1049/mia2.12507
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
A circulator-like high gain, unidirectional, dual circularly polarised (DCP) wearable antenna with a low specific absorption rate of 0.088 W/kg for 5.8 GHz industrial, scientific, and medical (ISM) band (5.725-5.875 $5.725-5.875$ GHz) full-duplex wireless body area network (WBAN) applications is proposed. The DCP full-duplexing is achieved by a closed-loop feedback structure between its orthogonal-ports with enhanced axial ratio (AR) bandwidth and good impedance matching. The antenna is backed with a 7x7 $7\times 7$ electromagnetic bandgap array that allows for improved directionality, AR and isolation between the ports. The cross-polarisation level above 17 dB is attained in the broadside direction, in both the E-plane and the H-plane, indicating good polarisation discrimination. Since the total power at each respective port is maintained and not halved (-3 ${-}3$ dB) with the measured port isolation of 28 $\tilde 28$ dB in real scenarios (with the potential evidence of 34 $\tilde 34$ dB) within the ISM band, that leads to a circulator-like antenna, meaning that a typically cascaded circulator/duplexer can be relieved and leave to the digital processing any self-interference challenge of full duplex systems through digital cancelation techniques, which alleviates the overall costs of RF hardware and eases integration. Even though dual linear polarization as well as DCP can be supported, the closed-loop feedback structure uses a port as Tx (RHCP) and the other one as Rx (LHCP) simultaneously with enhanced AR bandwidth. Without this structure, it would require a circulator/duplexer for DCP full-duplex operation and the associated added insertion losses and/or 12 $\frac{1}{2}$ power (if duplexers) for operation, together with a polarisation misalignment problem that is undesired in wearable WBAN applications. A compact circulator-like high gain, unidirectional, dual circularly polarised wearable antenna with low specific absorption rate of 0.508 W/kg for 5.8 GHz industrial, scientific, and medical band (5.725-5.875 GHz) full-duplex wireless body area network applications. image
引用
收藏
页码:838 / 848
页数:11
相关论文
共 37 条
[1]   Crumpling effects and specific absorption rates of flexible AMC integrated antennas [J].
Alemaryeen, Ala ;
Noghanian, Sima .
IET MICROWAVES ANTENNAS & PROPAGATION, 2018, 12 (04) :627-635
[2]   Design and SAR Analysis of Wearable Antenna on Various Parts of Human Body, Using Conventional and Artificial Ground Planes [J].
Ali, Usman ;
Ullah, Sadiq ;
Khan, Jalal ;
Shafi, Muhammad ;
Kamal, Babar ;
Basir, Abdul ;
Flint, James A. ;
Seager, Rob D. .
JOURNAL OF ELECTRICAL ENGINEERING & TECHNOLOGY, 2017, 12 (01) :317-328
[3]  
[Anonymous], 1997, OET B, V65
[4]   Compact and Low-Profile Textile EBG-Based Antenna for Wearable Medical Applications [J].
Ashyap, Adel Y. I. ;
Abidin, Zuhairiah Zainal ;
Dahlan, Samsul Haimi ;
Majid, Huda A. ;
Shah, Shaharil Mohd ;
Kamarudin, Muhammad Ramlee ;
Alomainy, Akram .
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS, 2017, 16 :2550-2253
[5]   Polymeric ferrite sheets for SAR reduction of wearable antennas [J].
Augustine, R. ;
Alves, T. ;
Sarrebourse, T. ;
Poussot, B. ;
Mathew, K. T. ;
Laheurte, J. -M. .
ELECTRONICS LETTERS, 2010, 46 (03) :197-198
[6]   A Novel Broadband Dual Circularly Polarized Microstrip-Fed Monopole Antenna [J].
Chandu, D. S. ;
Karthikeyan, S. S. .
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 2017, 65 (03) :1410-1415
[7]   A Wearable Circularly Polarized Antenna Backed by AMC Reflector for WBAN Communications [J].
Chaouche, Youcef Braham ;
Nedil, Mourad ;
Mabrouk, Ismail Ben ;
Ramahi, Omar M. .
IEEE ACCESS, 2022, 10 :12838-12852
[8]   Developing Wideband Dual-Circularly Polarized Antenna With Simple Feeds Using Magnetoelectric Dipoles [J].
Chen, Weiheng ;
Yu, Zhigiang ;
Zhai, Jianfeng ;
Zhou, Jianyi .
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS, 2020, 19 (06) :1037-1041
[9]   Off-Body Spatial Diversity Reception Using Circular and Linear Polarization: Measurement and Modeling [J].
Cui, Peng-Fei ;
Lu, Wen-Jun ;
Yu, Yu ;
Xue, Bai ;
Zhu, Hong-Bo .
IEEE COMMUNICATIONS LETTERS, 2018, 22 (01) :209-212
[10]   A Wearable Dual-Band Low Profile High Gain Low SAR Antenna AMC-Backed for WBAN Applications [J].
El Atrash, Mohamed ;
Abdalla, Mahmoud A. ;
Elhennawy, Hadia M. .
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 2019, 67 (10) :6378-6388