volume | PIER Journals

Abstract

In this paper, the design of a miniature antenna dedicated to be implanted in a small animal and intended to work in the European UHF RFID (865-868 MHz) band is presented. One of the goals of this work is the miniaturization of the radiating element while preserving its efficiency to allow a reliable communication between an external interrogating reader and the implanted device. The radiating element is a small rectangular loop antenna associated with a dipole allowing impedance matching. The antenna has dimensions of 2.4 mm x 25.4 mm x 0.5 mm and integrates an Impinj Monza 4 chip presenting an impedance of 5.5-j74 Ohms at 868 MHz. The antenna is designed and optimized by using the ANSYS HFSS software. The obtained results show a simulated radiation efficiency of 0.7% and simulated total gain of -17.5 dBi. A prototype is realized, and RSSI measurements have demonstrated the possibility of reliable wireless communications between the implanted antenna and an external reader. In addition, Specific Absorption Rate (SAR) calculation indicates that this implanted antenna meets the required safety regulations.

1. R. S. M. and B. Jacobson, "Endoradiosonde," Nature, Vol. 179, 1239-1240, 1957.
doi:10.1038/1791239a0 Google Scholar

2. Qureshi, W. A., "Current and future applications of the capsule camera," Nature Rev. Drug Disc., Vol. 3, 7-10, May 2004.
doi:10.1038/nrd1385 Google Scholar

3. Merli, F., B. Fuchs, J. R. Mosig, and A. K. Skrivervik, "The effect of insulating layers on the performance of implanted antennas," IEEE Trans. Antennas Propag., Vol. 59, No. 1, 21-31, 2011.
doi:10.1109/TAP.2010.2090465 Google Scholar

4. Karlsson, A., "Physical limitations of antennas in a lossy medium," IEEE Trans. Antennas Propag., Vol. 52, No. 8, 2027-2033, 2004.
doi:10.1109/TAP.2004.832335 Google Scholar

5. Furse, C. M. and A. Chrysler, "A history & future of implantable antennas," IEEE Antennas and Propagation Society International Symposium (APSURSI), 527-528, 2014.
doi:10.1109/APS.2014.6904595 Google Scholar

6. Kiourti, A., K. A. Psathas, and K. S. Nikita, "Implantable and ingestible medical devices with wireless telemetry functionalities: A review of current status and challenges," Bioelectromagn. Wiley Period. Inc., Vol. 35, No. 1, 1-15, 2014.
doi:10.1002/bem.21813 Google Scholar

7. Kiourti, A. and K. S. Nikita, "Miniature scalp-implantable antennas for telemetry in the MICS and ISM bands: Design, safety considerations and link budget analysis," IEEE Trans. Antennas Propag., Vol. 60, No. 8, 3568-3575, 2012.
doi:10.1109/TAP.2012.2201078 Google Scholar

8. Catarinucci, L., R. Colella, L. Mainetti, V. Mighali, L. Patrono, I. Sergi, and L. Tarricone, "Near field UHF RFID antenna system enabling the tracking of small laboratory animals," Int. J. Antennas Propag., Vol. 2013, 1-10, 2013.
doi:10.1155/2013/713943 Google Scholar

9. Bakore, R., J. C. West, C. Hutchens, and R. Ahmed, "Design of a proposed folded dipole antenna for use with an implantable RFID tag at 915 MHz," 2013 IEEE Antennas and Propagation Society International Symposium (APSURSI), 2085-2086, Orlando, FL, USA, 2013. Google Scholar

10. Garcia-Miquel, A., B. Medina-Rodr´ıguez, N. Vidal, F. M. Ramos, E. Roca, and J. M. Lopez-Villegas, "Design and characterization of a miniaturized implantable UHF RFID tag based on LTCC technology," 11th European Conference on Antennas and Propagation (EUCAP), 1024-1026, 2017. Google Scholar

11. Dubok, A. and A. B. Smolders, "Increased operational range for implantable UHF RFID antennas," 8th Eur. Conf. Antennas Propag. (EuCAP 2014), 1749-1753, 2014.
doi:10.1109/EuCAP.2014.6902131 Google Scholar

12. Jeevani, J. M., W. Jayasinghe, and D. Uduwawala, "A novel multiband miniature planar inverted f antenna design for bluetooth and WLAN applications," International Journal of Antennas and Propagation, 1-6, 2015. Google Scholar

13. Skrivervik, A. K., "Implantable antennas: The challenge of efficiency," 7th Eur. Conf. Antennas Propagation, EuCAP 2013, 3627-3631, 2013. Google Scholar

14. Rodriguez, M., C. Furse, and R. Franklin, "Manufacturing considerations for implantable antennas," IEEE Antennas Propag. Soc. AP-S Int. Symp., 2087-2088, 2013. Google Scholar

15. Nguyen, V. H., A. Diallo, P. Le Thuc, R. Staraj, S. Lanteri, and G. F. Carle, "Wireless interrogation of small animal phantoms with a miniature implanted UHF RFID tag," Antenna Measurements & Applications (CAMA), IEEE International Conference, Vol. 3, 306-309, 2017.
doi:10.1109/CAMA.2017.8273434 Google Scholar

16. Karacolak, T., R. Cooper, and E. Topsakal, "Electrical properties of rat skin and design of implantable antennas for medical wireless telemetry," IEEE Trans. Antennas Propag., Vol. 57, No. 9, 2806-2812, 2009.
doi:10.1109/TAP.2009.2027197 Google Scholar

17. Gabriel, S., R. W. Lau, and C. Gabriel, "The dielectric properties of biological tissues: III. Parametric models for the dielectric spectrum of tissues," Phys. Med. Biol., Vol. 41, No. 11, 2271-2293, 1996.
doi:10.1088/0031-9155/41/11/003 Google Scholar

18. Gabriel, C., "Compilation of the dielectric properties of body tissues at RF and microwave frequencies,", Report Documentation, Dept. of Physics AFOSR-TR-96 King’s College London, UK, 1996.
doi:10.1088/0031-9155/41/11/003 Google Scholar

19. Lazebnik, M., M. Okoniewski, J. H. Booske, and S. C. Hagness, "Highly accurate Debye models for normal and malignant breast tissue dielectric properties at microwave frequencies," IEEE Microw. Wirel. Components Lett., Vol. 17, No. 12, 2007-2009, 2007. Google Scholar

20. Perrissol, P., M. Monedero, R. Ndashymie, A. Diallo, P. Le Thuc, R. Staraj, and G. F. Carle, "Wireless interrogation of an implanted temperature sensor in a mouse," Proceed. IEEE International Conference on RFID-Technologies and Applications (RFID-TA), 52-55, 2012. Google Scholar

21. ERC Recommendation (70-03) [Online], Available: http://www.erodocdb.dk/docs/doc98/off-pdf/rec7003e.pdf. Google Scholar

22. Balanis, C. A., Antenna Theory: Analysis and Design, 3rd Ed., Wiley, 2015.

23. Fujimoto, K. and H. Morishita, Modern Small Antenna, Cambridge University Press, 2013.
doi:10.1017/CBO9780511977602

24. Schantz, H. G., "A near field propagation law & a novel fundamental limit to antenna gain versus size," IEEE APS Conf., Vol. 2, 4-7, July 2005. Google Scholar

25. Orfanidis, S. J., Electromagnetic Waves and Antennas, Prentice-Hall, 2003.

26. Monza 4 RFID Impinj chip datasheet [Online], Available: https://support.impinj.com/hc/enus/articles/202756908-Monza-4-RFID-Tag-Chip-Datasheet. Google Scholar

27. Dobkin, D. M., The RF in RFID, UHF RFID in Practice, 2nd Ed., Amsterdam, Newnes, 2012.

28. Luh, Y.-P. and Y.-C. Liu, "Measurement of effective reading distance of UHF RFID passive tags," Mod. Mech. Eng., Vol. 03, No. 03, 115-120, 2013.
doi:10.4236/mme.2013.33016 Google Scholar

29. Karacolak, T., R. Cooper, J. Butler, S. Fisher, and E. Topsakal, "In vivo verification of implantable antennas using rats as model animals," IEEE Antennas Wirel. Propag. Lett., Vol. 9, 334-337, 2010.
doi:10.1109/LAWP.2010.2048693 Google Scholar

30. Bakore, R., J. C.West, C. Hutchens, and R. Ahmed, "Design of a proposed folded dipole antenna for use with an implantable RFID tag at 915 MHz," Antennas and Propagation Society International Symposium (APSURSI), 2085-2086, 2013. Google Scholar

31. Galehdar, A., D. V. Thiel, and S. G. O’Keefe, "Antenna efficiency calculations for electrically small, RFID antennas," IEEE Antenna and Wireless Propagation Letters, 2007. Google Scholar

32. Alrawashdeh, R. S., Y. Huang, M. Kod, and A. Abu Bakar Sajak, "A broadband flexible implantable loop antenna with complementary split ring resonators," IEEE Antennas Wirel. Propag. Lett., Vol. 14, 1322-1325, 2015. Google Scholar

33. Perrissol, P., A. Diallo, P. Le Thuc, R. Staraj, and G. F. Carle, "Performance of a cross dipole antenna dedicated to biological telemetry," The 8th European Conference on Antennas and Propagation (EuCAP 2014), 2174-2177, 2014.
doi:10.1109/EuCAP.2014.6902240 Google Scholar

34., Agilent 85070E Dielectric Probe Kit [Online] Available, http://na.support.keysight.com/materials/help/85070.pdf. Google Scholar

35., RFID Impinj Speedway Revolution R420 reader [Online], Available: https://support.impinj.com/hc/en-us/articles/202755358-Speedway-Revolution-Installation-Operations-Guide. Google Scholar

36. Phatra, C. and P. Krachodnok, "A circularly polarized antenna for UHF RFID reader," 11th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (EC, 1-4, 2014. Google Scholar

37. Lee, B. G. and W. Y. Chung, "Multitarget three-dimensional indoor navigation on a pda in a wireless sensor network," IEEE Sens. J., Vol. 11, No. 3, 799-807, March 2011.
doi:10.1109/JSEN.2010.2076802 Google Scholar

38. Liu, C., Y.-X. Guo, and S. Xiao, "A review of implantable antennas for wireless biomedical devices," Forum for Electromagnetic Research Methods and Application Technologies (FERMAT), 2016. Google Scholar

39. Othman, N., N. A. Samsuri, M. K. A. Rahim, and N. A. Elias, "SAR in the presence of conductive medical implant at 0.9, 1.8 and 2.4 GHz due to close proximity antenna," 10th Eur. Conf. on Antennas Propag. (EuCAP), 8-12, 2016. Google Scholar

40. Zhao, Y., R. L. Rennaker, C. Hutchens, and T. S. Ibrahim, "Implanted miniaturized antenna for brain computer interface applications: analysis and design," PloS One, Vol. 9, No. 7, 1-10, 2014. Google Scholar

41. IEEE Standards Coordinating Committee, IEEE C95, , 1-2009: IEEE Standard for Safety Levels with Respect to Human Exposure to Radio Frequency Electromagnetic Fields, 3 kHz to 300 GHz, April 2006. Google Scholar

Dr. Van Hieu Nguyen

Dr. Aliou Diallo

Dr. Philippe Le Thuc

Dr. Robert Staraj

Dr. Stephane Lanteri

Dr. Georges F. Carle