volume | PIER Journals

Abstract

In this paper, a miniaturized dipole antenna operating at 100 MHz frequency for Ground Penetrating Radar (GPR) application is presented. A conventional dipole antenna length is half of its lowest operating frequency wavelength. As low frequency GPR system is vital for high depth penetration, the size of the antenna used reduces its handling and portability. Therefore, the technique of miniaturizing a dipole antenna by adding extra radiating arms is presented here. The antenna design and analysis is carried out using Advanced Digital System (ADS) software, and a network analyser is used to validate antenna performance. The antenna of 66.5 cm × 22 cm dimension, fabricated on an FR4 substrate exhibits a frequency resonance at 104 MHz with 8 MHz -10 dB bandwidth. The proposed antenna radiates in omnidirectional pattern and features 55 % reduction in length compared to a conventional dipole antenna of same frequency operation.

1. Chen, G. and C. Richard, "A 900 MHz shielded bow-tie antenna system for ground penetrating radar," 13th International Conference on Ground Penetrating Radar, Lecce, Italy, 2010.

2. Harry, M., Ground Penetrating Radar Theory and Applications, Elsevier Books, Oxford, UK, 2009.

3. Takahashi, K., J. Igel, H. Preetz, and S. Kuroda, "Basics and application of ground-penetrating radar as a tool for monitoring irrigation process," Problems, Perspectives and Challenges of Agricultural Water Management, 160, InTech, 2012.

4. Smith, D. G. and H. M. Jol, "Ground penetrating radar: Antenna frequencies and maximum probable depths of penetration in quaternary sediments," Journal of Applied Geophysics, Vol. 33, 93-100, 1995.
doi:10.1016/0926-9851(95)90032-2

5. Alongi, A., T. Cantor, C. Kneeter, and A. Alongi, "Concrete evaluation by radar theoretical analysis," Transportation Research Board, ISSN: 0361-1981, 1982.

6. Fang, G. and P. Michele, "Designing of a low frequency ultra wideband (UWB) antenna and its application in ground penetrating radar (GPR) system," 10th International Conference on Ground Penetrating Radar, The Netherlands, 2004.

7. Trinks, I., P. Tsourlos, K. Löcker, G. Vargemezis, G. Tsokas, A. Vlachopoulos, C. Doumas, M. Kucera, and G. Verhoeven, "Near surface geophysical archaeological prospection at the prehistoric site of Akrotiri on Santorini/Thera," 20th European Meeting of Environmental and Engineering Geophysics, Athens, 2014.

8. Nagatoshi, M., H. Morishita, and S. Tanaka, "A study on an improvement of folded bow-tie antenna by adding aditional elements," IEEE International Symposium on Antennas and Propagation (APSURSI), Washington, 2011.

9. Choi, J., F. Dagefu, B. Sadler, and K. Sarabandi, "Electrically small folded dipole antenna for HF and low-VHF bands," IEEE Antennas and Wireless Propagation Letters, Vol. 15, No. 99, 1, 2015.

10. Patel, P., K. Dwibedi, R. Poonkhuzhali, and D. Thiripurasundari, "Miniaturized dipole antenna using Koch fractal technique for wearable application," International Conference on Communication and Signal Processing, Melmaruvathur, 2013.

11. Kim, J., M. Nagatoshi, and H. Morishita, "Study on miniaturization of a strip folded dipole antenna with two linear conductors," European Conference on Antennas and Propagation (EUCAP), Rome, 2001.

12. Nagatoshi, M., S. Tanaka, S. Horiuchi, and H. Morishita, "A study on wider bandwidth of bow-tie antenna with folded elements," IEEE Antennas and Propagation Society International Symposium (APSURSI), Toronto, 2010.

13. Morishita, H. and N. T. Hung, "Characteristics of antennas with folded structure," International Symposium on Antennas and Propagation (ISAP), Nagoys, 2012.

14. Yeoh, W. S., K. L. Wong, and W. S. T. Rowe, "Wideband miniaturized half bowtie printed dipole antenna with integrated balun for wireless applications," IEEE Transactions on Antennas and Propagation, Vol. 59, No. 1, 339-342, 2011.
doi:10.1109/TAP.2010.2090459

15. Liu, Y., H. Yi, W. Wang, and X. Gong, "A novel miniaturized broadband dual-polarized dipole antenna for base station," IEEE Antennas and Wireless Propagation Letters, Vol. 12, 1335-1338, 2013.
doi:10.1109/LAWP.2013.2285373

16. Hamani, A., R. Touhami, and M. Yagoub, "Novel tag antenna design for UHF RFID applications," 13th Mediterranean Microwave Symposium (MMS), Saida, 2013.

17. Lin, Y., C. Lin, H. Chen, and J. Peng, "Compact dipole antenna for implantable devices," International Symposium on Antennas and Propagation (ISAP), Kaohsiung, 2014.

18. Radiom, S., A. Enayati, G. Vandenbosch, W. D. Raedt, and G. Gielen, "Miniaturization of a bow-tie antenna for a pulsed-UWB transceiver in the 300-960 MHz band," 3rd European Conference on Antennas and Propagation, Berlin, 2009.

Mr. Md Omar Faruq Howlader

Dr. Tariq Pervez Sattar