TLM MODELLING OF A SLOTTED WEARABLE MICROSTRIP ANTENNA UNDER BENDING CONDITIONS

Jugoslav J. Joković, Tijana Ž. Dimitrijević, Aleksandar S. Atanasković, Nebojša S. Dončov

DOI Number
https://doi.org/10.2298/FUEE2504605J
First page
605
Last page
623

Abstract


This paper investigates the potential of the Transmission Line Matrix (TLM) method and highlights the efficiency of a conformal cylindrical mesh for analyzing the tunable capabilities of a wearable slotted antenna under bending conditions. Various configurations of polygon-shaped and U-shaped slots inserted into the radiating patch of a rectangular antenna are considered to illustrate their tuning effects on antenna parameters. The cylindrical TLM approach is demonstrated to be particularly effective for the efficient and accurate analysis of a flexible slotted antenna attached to the human body, focusing on resonant frequencies and reflection coefficients under different bending angles. The simulated results confirm the consistency of frequency shifts caused by bending, while the cylindrical mesh provides precise analysis of the impact of slot shape and size on antenna performance.

Keywords

slotted antenna, wearable antennas, antenna bending, transmission line modelling method

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References


J. Jokovic, T. Dimitrijevic, A. Atanaskovic and N. Doncov, "Wearable Slotted Antenna Modelled by Cylindrical TLM Method", In Proceedings of the 16th International Conference on Advanced Technologies, Systems and Services in Telecommunications (TELSIKS), Niš, Serbia, pp. 360-361, 2023.

H. Yang and X. Liu, "Wearable Dual-Band and Dual-Polarized Textile Antenna for on- and Off-Body Communications", IEEE Antennas Wireless Propag. Lett., vol. 19, no. 12, pp. 2324-2328, 2020

C. X. Mao, D. Vital, D. H. Werner, Y. Wu and S. Bhardwaj, "Dual-Polarized Embroidered Textile Armband Antenna Array With Omnidirectional Radiation for on-/Off-Body Wearable Applications", IEEE Trans. Ant. Prop, vol. 68, no. 4, pp. 2575-2584, 2020.

Y. L. Chow, Z. N. Chen, K. F. Lee and K. M. Luk, "A Design Theory on Broadband Patch Antennas With Slot", In Proceedings of IEEE Antennas Propag. Soc. Int. Symp. Dig., Atlanta, USA, Jun. 1998, vol. 2, pp. 1124-1127.

S. Xiao, B. Z. Wang and X. S. Yang, "A Novel Frequency Reconfigurable Patch Antenna", Microwave Opt. Tech. Lett., vol. 36, pp. 295-297, 2003.

Y. Chen and C. F. Wang, "Characteristic-Mode-Based Improvement of Circularly Polarized U-Slot and E-Shaped Patch Antennas", IEEE Antennas Wireless Propag. Lett., vol. 11, pp. 1474-1477, 2012.

K.-F. Lee, S. L. S. Yang and A. A. Kishk, "Dual- and Multiband U-Slot Patch Antennas", IEEE Antennas Wireless Propag. Lett., vol. 7, pp. 645-647, 2008.

F. Yang, X.-X. Zhang, X. Ye and Y. R. Samii, "Wide-Band E-Shaped Patch Antennas for Wireless Communications", IEEE Trans. Ant. Propag., vol. 49, no. 7, pp. 1094-1100, 2001

E. K. Kaivanto, M. Berg, E. Salonen and P. de Maagt, "Wearable Circularly Polarized Antenna for Personal Satellite Communication and Navigation", IEEE Trans. Antennas Propag., vol. 59, no. 12, pp. 4490 - 4496, Dec. 2011.

A. Khidre, K.-F. Lee, A. Z. Elsherbeni and F. Yang, "Wide Band Dual–Beam U-Slot Microstrip Antenna", IEEE Trans. Ant. Propag., vol. 61, no. 3, pp. 1415-1418, Mar. 2013.

L. Song and Y. Rahmat-Samii, "A Systematic Investigation of Rectangular Patch Antenna Bending Effects for Wearable Applications", IEEE Trans. Ant. Prop, vol. 66, no. 5, pp. 2219-2228, 2018.

K. S. Kunz and R. J. Luebbers, The Finite Difference Time Domain Method for Electromagnetics, CRC Press, Boca Raton, FL, 1993.

W.C.Gibson, The Method of Moments in Electromagnetics, Chapman and Hall/CRC, 2021.

T.J.R. Hughes, The Finite Element Method: Linear Static and Dynamic Finite Element Analysis, Prentice-Hall, 1987.

C. Christopoulos, The Transmission-Line Modelling Method: TLM, Institute of Electrical and Electronics Engineers, 1995.

O. Messaoudi, O. Beneyello, D. Pompei and A. Papiernik, "The Transmission Line Matrix Method Applied to Microstrip Antennas", In Proceedings of 1988 AP-S Digest, 1988, pp. 1022-1025.

N. Fichtner, U. Siart, Y. Kuznetsov, A. Baev and P. Russer, "TLM Modeling and System Identification of Optimized Antenna Structures", Adv. Radio Sci., vol. 6, pp. 45-48, 2008

S. Ghosh, S. Chatterjee and B. Gupta, "Meander-Lined Implantable Antenna Design at 2.45 GHz Using Transmission Line Model", IETE J. Res., vol. 70, no. 11, pp. 8127-8139, 2024.

T. Dimitrijević, J. Joković, B. Milovanović and N. Dončov, "TLM Modeling of a Probe-Coupled Cylindrical Cavity Based on Compact Wire Model in the Cylindrical Mesh", Int. Jour. of RF and Microw. Comp.-Aided Eng., vol. 22, no. 2, pp. 184-192, 2012.

T. Dimitrijević, J. Joković and N. Dončov, "Efficient Modelling of a Circular Patch-Ring Antenna Using the Cylindrical TLM Approach", IEEE Antennas and Wireless Propag. Lett., vol. 16, pp. 2070-2073, Apr. 2017.

J. Joković, T. Dimitrijević, A. Atanasković and N. Dončov, "Computational Modeling of the Bent Antenna in an On-Body Mode Using the Cylindrical TLM Approach", Math. Probl. Engineer., vol. 2022, p. 8486740, 2022.

T. Dimitrijević, A. Vuković, A. Atanasković, J. Joković, P. Sewell and N. Dončov, "Holistic Analysis of Conformal Antennas Using the Cylindrical TLM Method", IEEE Trans. Ant. Propag., vol. 71, no. 5, pp. 4028-4035, 2023.

J. Joković, T. Dimitrijević, N. Dončov and B. Milovanović, "Efficient Integral Cylindrical Transmission Line Matrix Modelling of a Coaxially Loaded Probe Coupled Cavity", IET Microwaves, Ant.& Prop., vol. 9, no. 8, pp. 788-794, 2015.


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