Ultra-Wideband Microstrip Antenna for Body Centric Communications
Keywords:Body-centric wireless communication, miniaturized microstrip antenna, wireless body networks
A novel low profile reconfigurable wide band microstrip antenna for impulse radio ultra-wideband (IRUWB) WBANs and targeted for on-body sensor node has been introduced. The printed monopole antenna consists of a heart shaped radiating patch and an elliptical ground plane. This antenna has a frequency bandwidth of 130% with a VSWR of 1.5 and average gain is about 3.6 dBi. There is a slot on the patch which is loaded by two varactor diodes to form a tunable notch band. The antenna operates from 2.4 GHz to 12 GHz. The proposed antenna is a good candidate for medical purpose since it has a sufficient amount of gain and bandwidth. We used active circuit to increase the flexibility of setting rejection band to prevent having interference from other sources such as Wi-Fi. The antenna is fabricated and there is a good agreement between the simulation and measurement results.
G. A. Conway and W. G. Scanlon, “Antennas for over body-surface communication at 2.45 GHz,” in Antennas and Propagation, IEEE Transactions on, vol. 57, no. 4, pp. 844-855, Apr. 2009.
K. M. Chang, R. J. Lin, I. C. Deng, J. B. Chen, K. Q. Xiang, and C. J. Rong, “A novel design of a CPW-fed square slot antenna with broadband circular polarization,” Microwave. Opt. Technol. Lett., vol. 48, no. 12, pp. 2456-2459, Dec. 2006.
O. Manoochehri, S. Abbasiniazare, A. Torabi, and K. Forooraghi, “A second-order BPF using a miniaturized-element frequency selective surface,” Progress In Electromagnetics Research C, vol. 31, pp. 229-240, 2012.
M. A. Salari, O. Manoochehri, and S. Abbasiniazare, “Miniaturized microstrip ring hybrid with defected microstrip structure,” Microwave and Optical Technology Letters, vol. 55, pp. 2245-2248, 2013.
S. Abbasiniazare, O. Manoochehri, and K. Forooraghi, “A reconfigurable printed dipole antenna using RF PIN diodes,” Microwave and Optical Technology Letters, vol. 56, pp. 1151- 1155, 2014.
M. Norooziarab, Z. Atlasbaf, M. Rafaei-Booket, and F. Farzami, “A tunable transmission line based on an SIW loaded by a new single-cell metamaterial,” Telecommunications (IST), 2012 Sixth International Symposium on, Tehran, pp. 75-79, 2012.
F. Farzami and M. Norooziarab, “Experimental realization of tunable transmission lines based on single-layer SIWs loaded by embedded SRRs,” in IEEE Transactions on Microwave Theory and Techniques, vol. 61, no. 8, pp. 2848-2857, Aug. 2013.
C. Hua, Y. Lu, and T. Liu, “Printed UWB heartshaped monopole antenna with band-notch reconfigurability,” in 2016 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM), pp. 1-3, 2016.
G. A. Conway, W. G. Scanlon, and D. Linton, “Low profile microstrip patch antenna for overbody surface communication at 2.45 GHz,” in Vehicular Technology Conference, 2007, VTC2007- Spring, IEEE 65th, pp. 392-396, Apr. 22-25, 2007.
S. Khaledian and Z. Atlasbaf, “Dual band and dual mode microstrip antenna for body centric wireless communication,” Applied Computational Electromagnetics Society Journal, vol. 31, 2016.
I. J. Bahl and R. Garg, “A designer’s guide to stripline circuits,” Microwaves, pp. 90-96, Jan. 1978.
J. R. James, et al., Microstrip Antenna Theory and Design. Steven-age, UK: Peter Peregrinus, 1981.