Terahertz Microstrip Patch Antennas For The Surveillance Applications

Rashad Hassan Mahmud

doi:10.24017/science.2020.1.2

Authors

Rashad Hassan Mahmud Physics Department, College of Education, Salahaddin University, Erbil, Iraq

Abstract

This paper presents a new design of the microstrip patch antenna operated at the terahertz frequencies (700-850 GHz). The conventional microstrip patch antenna dimensions shrink to a few microns when operating at such terahertz frequencies. Thus, the design of the patch and its feeding network will be miniaturized extremely, and their fabrications would be extremely difficult. In this paper, the configuration of the proposed microstrip patch antenna is suited in a way that it can be modeled using multilayers structure. This multilayer structure facilitates the modeling, and considering its fabrication. The proposed microstrip antenna has been designed using three layers. The top layer is used to model the rectangular patch; while the second layer is for the substrate, and the bottom layer is for the ground plane. The physical dimensions of the layers and the fed-line are optimised using the microwave Computer Simulation Technology (CST) simulator in order to enhance the electrical parameters of the antenna such as antenna realised gain, bandwidth, total and radiation efficiencies, and radiation patterns. In addition to that, the impact of the physical dimensions of the rectangular patch on controlling the resonant frequency of the dominant mode (TM₀₁) have been investigated. Keeping the lower and higher propagating modes out of the frequency band of interest is another aspect which has been addressed in this paper. The antenna has been simulated, and its realised gain fluctuates from 6.4 dBi to 9.7 dBi over the operating frequency range (700-850 GHz). Also, it provides extremely large reflection coefficient bandwidth (S11) which it is below -10 dB over the entire operating frequency band. The total efficiency is more than 75 %. Due to its simplicity and providing large bandwidth, the proposed antenna could be of interest in many security and surveillance applications.

Keywords:

microstrip patch antenna, terahertz frequency band, micromachined SU-8 layer technique, large bandwidth, surveillance applications

References

[1] P. H. Siegel, "THz instruments for space," IEEE Transactions on Antennas and Propagation, vol. 55, pp. 2957-2965, 2007.
https://doi.org/10.1109/TAP.2007.908557
[2] P. H. Siegel, "Terahertz technology in biology and medicine," IEEE transactions on microwave theory and techniques, vol. 52, pp. 2438-2447, 2004.
https://doi.org/10.1109/TMTT.2004.835916
[3] S. Galoda and G. Singh, "Fighting terrorism with terahertz," Ieee Potentials, vol. 26, pp. 24-29, 2007.
https://doi.org/10.1109/MPOT.2007.906117
[4] A. Dobroiu, C. Otani, and K. Kawase, "Terahertz-wave sources and imaging applications," Measurement Science and Technology, vol. 17, p. R161, 2006.
https://doi.org/10.1088/0957-0233/17/11/R01
[5] K. R. Jha and G. Singh, Terahertz planar antennas for next generation communication: Springer, 2014.
https://doi.org/10.1007/978-3-319-02341-0
[6] R. C. Daniels and R. W. Heath, "60 GHz wireless communications: Emerging requirements and design recommendations," IEEE Vehicular technology magazine, vol. 2, pp. 41-50, 2007.
https://doi.org/10.1109/MVT.2008.915320
[7] R. C. Daniels, J. N. Murdock, T. S. Rappaport, and R. W. Heath, "60 GHz wireless: Up close and personal," IEEE Microwave magazine, vol. 11, pp. 44-50, 2010.
https://doi.org/10.1109/MMM.2010.938581
[8] I. Frigyes, J. Bitó, B. Héder, and L. Csurgai-Horváth, "Applicability of the 50-90 GHz frequency bands in feeder networks," in 2009 3rd European Conference on Antennas and Propagation, 2009, pp. 336-340.
[9] B. Zhang, Y. Fan, and Z. Chen, "220-GHz-band wireless link system using all-electronic technologies for 20Gbit/s data transmission," in 2010 International Symposium on Intelligent Signal Processing and Communication Systems, 2010, pp. 1-3.
https://doi.org/10.1109/ISPACS.2010.5704712
[10] H.-J. Song, K. Ajito, A. Wakatsuki, Y. Muramoto, N. Kukutsu, Y. Kado, et al., "Terahertz wireless communication link at 300 GHz," in 2010 IEEE International Topical Meeting on Microwave Photonics, 2010, pp. 42-45.
https://doi.org/10.1109/MWP.2010.566423
[11] M. Chia, C. Ang, B. Luo, and S. Leong, "Wideband 307 GHz transceiver system for high speed digital wireless at 12.5 Gbps," in 2011 IEEE MTT-S International Microwave Symposium, 2011, pp. 1-4.
https://doi.org/10.1109/MWSYM.2011.5972951
[12] K. Sarabandi, A. Jam, M. Vahidpour, and J. East, "A novel frequency beam-steering antenna array for submillimeter-wave applications," IEEE Transactions on Terahertz Science and Technology, vol. 8, pp. 654-665, 2018.
https://doi.org/10.1109/TTHZ.2018.2866019
[13] L. Ranzani, D. Kuester, K. J. Vanhille, A. Boryssenko, E. Grossman, and Z. Popovi?, "G-Band MicroFabricated Frequency-Steered Arrays With 2$^\circ $/GHz Beam Steering," IEEE Transactions on Terahertz Science and Technology, vol. 3, pp. 566-573, 2013.
https://doi.org/10.1109/TTHZ.2013.2271381
[14] C. Wang, Y. Yao, J. Yu, and X. Chen, "3d Beam Reconfigurable THz Antenna with Graphene-Based HighImpedance Surface," Electronics, vol. 8, p. 1291, 2019.
https://doi.org/10.3390/electronics8111291
[15] R. Mahmud, T. He, M. Lancaster, Y. Wang, and X. Shang, "Micromachined travelling wave slotted waveguide antenna array for beam-scanning applications," in 10th Loughborough Antennas and Propagation Conference, LAPC, 2014.
[16] X. Shang, M. Ke, Y. Wang, and M. J. Lancaster, "WR-3 band waveguides and filters fabricated using SU8 photoresist micromachining technology," IEEE Transactions on Terahertz Science and Technology, vol. 2, pp. 629-637, 2012.
https://doi.org/10.1109/TTHZ.2012.2220136
[17] Y. Wang, B. Yang, Y. Tian, R. S. Donnan, and M. J. Lancaster, "Micromachined thick mesh filters for millimeter-wave and terahertz applications," IEEE Transactions on Terahertz Science and Technology, vol. 4, pp. 247-253, 2014.
https://doi.org/10.1109/TTHZ.2013.2296564
[18] Y. Wang, M. Ke, M. J. Lancaster, and J. Chen, "Micromachined 300-GHz SU-8-based slotted waveguide antenna," IEEE Antennas and Wireless Propagation Letters, vol. 10, pp. 573-576, 2011.
https://doi.org/10.1109/LAWP.2011.2158285
[19] Y. Gao, X. Shang, C. Guo, J. Powell, Y. Wang, and M. J. Lancaster, "Integrated waveguide filter amplifier using the coupling matrix technique," IEEE Microwave and Wireless Components Letters, vol. 29, pp. 267-269, 2019.
https://doi.org/10.1109/LMWC.2019.2901892
[20] R. H. Mahmud, "Synthesis of waveguide antenna arrays using the coupling matrix approach," University ofBirmingham, 2016.Kurdistan Journal of Applied Research | Volume 5 - Issue 1 - June 2020 | 27
[21] Y. Lo, D. Solomon, and W. Richards, "Theory and experiment on microstrip antennas," IEEE transactions on Antennas and Propagation, vol. 27, pp. 137-145, 1979.
https://doi.org/10.1109/TAP.1979.1142057
[22] C. A. Balanis, Modern antenna handbook: John Wiley & Sons, 2011.
[23] D. M. Pozar, Microwave engineering: John Wiley & Sons, 2009.
[24] S. S. Kashyap and V. Dwivedi, "Compact microstrip patch antennas for terahertz applications," in 2015 9th Asia Modelling Symposium (AMS), pp. 157-163,2015.
https://doi.org/10.1109/AMS.2015.33
[25] M. Rabbani and H. Ghafouri-Shiraz, "Improvement of microstrip antenna's bandwidth and fabrication tolerance at terahertz frequency bands," 2015.
https://doi.org/10.1049/ic.2015.0146
[26] P. Kopyt, B. Salski, P. Zagrajek, D. Obr?bski, and J. Marczewski, "Modeling of silicon-based substrates of patch antennas operating in the sub-THz range," IEEE Transactions on Terahertz Science and Technology, vol.7, pp. 424-432, 2017.
https://doi.org/10.1109/TTHZ.2017.2706026
[27] R. Bhatoa and E. Sidhu, "Novel terahertz microstrip patch antenna design for detection of biotin applications," in 2017 International Conference on Big Data Analytics and Computational Intelligence (ICBDAC), pp. 289- 292, 2017
https://doi.org/10.1109/ICBDACI.2017.8070850
[28] K. R. Jha and G. Singh, "Dual-band rectangular microstrip patch antenna at terahertz frequency for surveillance system," Journal of computational electronics, vol. 9, pp. 31-41, 2010.
https://doi.org/10.1007/s10825-009-0297-8
[29] M. Rabbani and H. Ghafouri?Shiraz, "Size improvement of rectangular microstrip patch antenna at MM?wave and terahertz frequencies," Microwave and Optical Technology Letters, vol. 57, pp. 2585-2589, 2015.
https://doi.org/10.1002/mop.29400
[30] K. R. Jha and S. K. Sharma, "Waveguide integrated Microstrip patch antenna at THz frequency," in 2014 IEEE Antennas and Propagation Society International Symposium (APSURSI), pp. 1851-1852, 2014.
https://doi.org/10.1109/APS.2014.6905252
[31] K. R. Jha and S. K. Sharma, "Waveguide integrated microstrip patch array feed source for a reflector antenna at THz frequency," in 2014 IEEE Antennas and Propagation Society International Symposium (APSURSI), pp. 1465-1466, 2014.
https://doi.org/10.1109/APS.2014.6905058