volume | PIER Journals

Abstract

In the letter, a compact dual-band and dual-polarized antenna integrated into textile for wireless body area network (WBAN) dual-mode applications is proposed. A vertically polarized omnidirectional radiation pattern is generated at 2.45 GHz for on-body mode, while a circularly polarized (CP) broadside radiation pattern resonates at 5.8 GHz for off-body mode. The proposed antenna consists of a compact round rigid substrate and a piece of felt with a full ground. On the upper rigid substrate, a center-fed circular patch with two open annular slots is designed to generate CP radiation. Then four pins are introduced to help the outer ring patch generates an omnidirectional radiation pattern of TM₀₁. The performances of the antenna in free space (FS) and on body (OB) are verified. Besides, the bending characteristics of textile materials are also analyzed. The speciﬁc absorption rate (SAR) is simulated, which meets the requirementof the IEEE C95.3 standard. These characteristics make the proposed antenna a good choice for WBAN applications.

1. Hall, P. S. and Y. Hao, Antennas and Propagation for Body-centric Wireless Communications, Artech House Publishers, Boston, 2006.

2. Conway, G. A. and W. G. Scanlon, "Antennas for over-body-surface communication at 2.45 GHz," IEEE Trans. Antennas and Propag., Vol. 57, No. 4, 844-855, Apr. 2009.
doi:10.1109/TAP.2009.2014525

3. Dumanli, S., "On-body antenna with reconfigurable radiation pattern," 2014 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applicatio, 1-3, London, UK, Dec. 2014.

4. Li, K., L. Li, Y. Cai, C. Zhu, and C. Liang, "A novel design of low-profile dual-band circularly polarized antenna with meta-surface," IEEE Antennas Wirel. Propag. Lett., Vol. 14, 1650-1653, 2015.
doi:10.1109/LAWP.2015.2417169

5. Liu, Z. and Y. Guo, "Compact low-profile dual band metamaterial antenna for body centric communications," IEEE Antennas Wirel. Propag. Lett., Vol. 14, 863-866, 2015.
doi:10.1109/LAWP.2014.2382586

6. Masood, R., C. Person, and R. Sauleau, "A dual-mode, dual-port pattern diversity antenna for 2.45-GHz WBAN," IEEE Antennas Wirel. Propag. Lett., Vol. 16, 1064-1067, 2017.
doi:10.1109/LAWP.2016.2620724

7. Tak, J., S. Woo, J. Kwon, and J. Choi, "Dual-band dual-mode patch antenna for on-/off-body WBAN communications," IEEE Antennas Wirel. Propag. Lett., Vol. 15, 348-351, 2016.
doi:10.1109/LAWP.2015.2444881

8. Zhao, C. and W. Geyi, "Design of a dual band dual mode antenna for on/off body communications," Microw. Opt. Technol. Lett., Vol. 62, No. 1, 514-520, 2020.
doi:10.1002/mop.32085

9. Tong, X., C. Liu, and X. Liu, "Dual-band on-/off-body reconfigurable antenna for wireless body area network (WBAN) applications," Microw. Opt. Technol. Lett., Vol. 60, No. 4, 945-951, 2018.
doi:10.1002/mop.31088

10. Tong, X., C. Liu, X. Liu, H. Guo, and X. Yang, "Switchable on-/off-body antenna for 2.45 GHz WBAN applications," IEEE Trans. Antennas and Propag., Vol. 66, No. 2, 967-971, Feb. 2018.
doi:10.1109/TAP.2017.2780984

11. Bhattacharjee, S., S. Maity, S. R. B. Chaudhuri, and M. Mitra, "A compact dual-band dual-polarized omnidirectional antenna for on-body applications," IEEE Trans. Antennas and Propag., Vol. 67, No. 8, 5044-5053, Aug. 2019.
doi:10.1109/TAP.2019.2891633

12. Mendes, C. and C. Peixeiro, "A dual-mode single-band wearable microstrip antenna for body area networks," IEEE Antennas Wirel. Propag. Lett., Vol. 16, 3055-3058, 2017.
doi:10.1109/LAWP.2017.2760142

13. Simorangkir, R. B., Y. Yang, and L. Matekovits, "Dual-band dualmode textile antenna on PDMS substrate for body-centric communications," IEEE Antennas Wirel. Propag. Lett., Vol. 16, 677-680, 2017.
doi:10.1109/LAWP.2016.2598729

14. Yan, S. and G. A. E. Vandenbosch, "Radiation pattern-reconfigurable wearable antenna based on metamaterial structure," IEEE Antennas Wirel. Propag. Lett., Vol. 15, 1715-1718, 2016.
doi:10.1109/LAWP.2016.2528299

15. Chen, S. J., T. Kaufmann, D. C. Ranasinghe, and C. Fumeaux, "A modular textile antenna design using snap-on buttons for wearable applications," IEEE Trans. Antennas and Propag., Vol. 64, No. 3, 894-903, Mar. 2016.
doi:10.1109/TAP.2016.2517673

16. Ullah, U., I. B. Mabrouk, and S. Koziel, "A compact circularly polarized antenna with directional pattern for wearable off-body communications," IEEE Antennas Wirel. Propag. Lett., Vol. 18, No. 12, 2523-2527, Dec. 2019.
doi:10.1109/LAWP.2019.2942147

17. Hu, X., S. Yan, and G. A. E. Vandenbosch, "Compact circularly polarized wearable button antenna with broadside pattern for U-NII worldwide band applications," IEEE Trans. Antennas and Propag., Vol. 67, No. 2, 1341-1345, Feb. 2019.
doi:10.1109/TAP.2018.2885210

18. Zheng, K. and Q. Chu, "A novel annular slotted center-fed beidou antenna with a stable phase center," IEEE Antennas Wirel. Propag. Lett., Vol. 17, No. 3, 364-367, Mar. 2018.
doi:10.1109/LAWP.2017.2778222

19. Hou, Q., H. Tang, Y. Liu, and X. Zhao, "Dual-frequency and broadband circular patch antennas with a monopole-type pattern based on epsilon-negative transmission line," IEEE Antennas Wirel. Propag. Lett., Vol. 11, 442-445, 2012.

20. Al-Zoubi, A., F. Yang, and A. Kishk, "A broadband center-fed circular patch-ring antenna with a monopole like radiation pattern," IEEE Trans. Antennas and Propag., Vol. 57, No. 3, 789-792, Mar. 2009.
doi:10.1109/TAP.2008.2011406

21. Yang, F. and X. X. Zhang, "Slitted small microstrip antenna," Proc. IEEE Antennas Propagation Symp., Vol. 2, 1236-1239, Atlanta, GA, USA, 1998.

22. "IEEE recommended practice for measurements and computations of radio frequency electromagnetic fields with respect to human exposure to such fields, 100 kHz to 300 GHz," IEEE Standard C95.3-2002, i-126, 2002.

Dr. Leitao Zhou

Prof. Shao-Jun Fang

Dr. Xiao Jia