volume | PIER Journals

Abstract

This paper presents some opportunities in the development of antennas when using Distilled Water (DW) as a dielectric with high relative electrical permittivity (ε_r(DW) = 80). By embedding an antenna in DW, the electrical growth of the antenna is achieved without significantly increasing its physical size. In other words, the antenna will resonate at frequencies lower than those to whom it originally resonated. It was also found that the antennas developed through this technique are usually multiband antennas, offering various resonance frequencies at frequencies lower than the original ones. Finally, the change in radiation patterns was also verified through the use of this technique that allows beamforming to be carried out by varying the size and shape of the DW block. The development of more efficient antennas has a direct impact on the energy consumption of wireless systems, which represents an effective contribution to climate change mitigation, the reason that the improvement of antennas is a very important research area.

1. CST Studio Suite, [Online]. Available: https://www.3ds.com/products-services/simulia/products/.

2. Zou, Meng, Zhongxiang Shen, and Jin Pan, "Frequency-reconfigurable water antenna of circular polarization," Applied Physics Letters, Vol. 108, No. 1, 2016. Google Scholar

3. Wang, Min and Qing-Xin Chu, "High-efficiency and wideband coaxial dual-tube hybrid monopole water antenna," IEEE Antennas and Wireless Propagation Letters, Vol. 17, No. 5, 799-802, 2018. Google Scholar

4. Sun, Jie and Kwai-Man Luk, "A compact-size wideband optically-transparent water patch antenna incorporating an annular water ring," IEEE Access, Vol. 7, 122964-122971, 2019. Google Scholar

5. Sun, Jie and Kwai-Man Luk, "A circularly polarized water patch antenna," IEEE Antennas and Wireless Propagation Letters, Vol. 19, No. 6, 926-929, 2020. Google Scholar

6. Xing, Lei, Yi Huang, Yaochun Shen, Saqer Al Ja'afreh, Qian Xu, and Rula Alrawashdeh, "Further investigation on water antennas," Iet Microwaves, Antennas & Propagation, Vol. 9, No. 8, 735-741, 2015. Google Scholar

7. Nilsson, Martin, "Directional antennas for wireless sensor networks," 9th Scandinavian Workshop on Wireless Adhoc Networks (ADHOC'09), Uppsala, Sweden, May 2009.

8. Ostrom, E., L. Mottola, and T. Voigt, "Evaluation of an electronically switched directional antenna for real-world low-power wireless networks," Proceedings of the 4th Workshop on Real-World Wireless Sensor Networks (REALWSN 2010), Colombo, Sri Lanka, 2010.

9. Rodrıguez, B., J. Schandy, J. Gonzalez, L. Steinfeld, and F. Silveira, "Fabrication and characterization of a directional spida antenna for wireless sensor networks," Proceedings of The URUCON IEEE 2017, Montevideo, Uruguay, 2017.

10. Rodríguez, B., J. Schandy, J. Gonzalez, L. Steinfeld, and F. Silveira, "Antenna characterization without using anechoic chambers or TEM cells," LANC'18: Proceedings of the 10th Latin America Networking Conference, 97-101, Oct. 2018.

11. Schandy, Javier, L. Steinfeld, B. Rodr´ıguez, J. Gonz´alez, and F. Silveira, "Enhancing parasitic interference directional antennas with multiple director elements," Wireless Communications and Mobile Computing, Vol. 2019, 1-9, August 2019.
doi:10.1155/2019/7546785 Google Scholar

12. Rodrıguez, B., L. Barboni, J. Gomez, et al. "Size reduction, multiband and beamforming features by embedding antennas in distilled water," Wireless Pers Commun., Vol. 129, 881-892, Dec. 2022. Google Scholar

13. Lu, Junwei, David Ireland, and Robert Schlub, "Dielectric embedded ESPAR (DE-ESPAR) antenna array for wireless communications," IEEE Transactions on Antennas and Propagation, Vol. 53, No. 8, 2437-2443, 2005. Google Scholar

14. Balanis, Constantine A., Antenna Theory: Analysis and Design, John Wiley & Sons, 2016.

15. Hassan, W., Analysis and Design of High Gain Lens Antennas, Lap Lambert Academic Publishing, 2016.

16. Klein, Lawrence and C. Swift, "An improved model for the dielectric constant of sea water at microwave frequencies," IEEE Transactions on Antennas and Propagation, Vol. 25, No. 1, 104-111, 1977. Google Scholar

Dr. Benigno Rodríguez Díaz

Dr. Leonardo Barboni Morales