Circular slotted THz Microstrip Patch Antenna for detection of constitutes of peptides in human body

Circular slotted THz Microstrip Patch Antenna for detection of constitutes of peptides in human body

  IJETT-book-cover  International Journal of Engineering Trends and Technology (IJETT)          
  
© 2017 by IJETT Journal
Volume-45 Number-5
Year of Publication : 2017
Authors : Parth Kuchroo, Hemant Bhatia, Vatanjeet Singh, Ekambir Sidhu
DOI :  10.14445/22315381/IJETT-V45P244

Citation 

Parth Kuchroo, Hemant Bhatia, Vatanjeet Singh, Ekambir Sidhu "Circular slotted THz Microstrip Patch Antenna for detection of constitutes of peptides in human body", International Journal of Engineering Trends and Technology (IJETT), V45(5),211-214 March 2017. ISSN:2231-5381. www.ijettjournal.org. published by seventh sense research group

Abstract
This paper presents a novel ultra wideband circular slotted terahertz antenna design for detection of peptides in human body. In the proposed antenna design, the FR4 material has been used as a substrate having dielectric constant (?r) 4.4 and thickness of 1.5 ?m. The ground, patch and feed line are made up of Copper material with thickness of 0.02 ?m. The performance of terahertz antenna has been analysed in terms of bandwidth (THz), return loss (dB), directivity (dBi), gain (dB), VSWR and impedance (ohms). The designed antenna resonates at 6 THz with the bandwidth of 2375 GHz (5.423 THz - 7.798 THz). The return loss of the proposed antenna is -43.58 dB at the resonating frequency of 6 THz. The VSWR of the proposed antenna design is 1. For feeding the antenna, the microstrip feed line technique has been employed for proper impedance matching and the proposed antenna has an input impedance of 48.23?. The proposed terahertz antenna design has a gain and directivity of 7.547 dB and 7.247 dBi, respectively at the resonating frequency of 6 THz. The antenna has been designed and simulated using Computer Simulation Technology (CST) Microwave Studio 2014. The proposed antenna can be suitably employed for the detection of constituents of peptides in human body.

 References

[1] L. N. Palash Bharadwaj, ”Optical,” Advances in Optics and Photonics, vol. 1, No. 3, pp. 438-483, 2009.
[2] M. Tonouchi, Cutting-edge terahertz technology, Nature Photonics, 1, 97 -105, (2007).
[3] B. Ferguson, X.-C. Zhang, ”Materials for Terahertz Science and Technology,” Nature Materials, 1, 26 (2002).
[4] P.H. Siegel, THz Technology, IEEE Trans. Microwave Theory and Techniques, vol. 50, no. 3, pp. 910-928, March 2002.
[5] Gao L-H et al. Broadband diffusion of terahertz waves by multi-bit coding metasurfaces. Light-Sci. Appl. 4, e324 (2015).
[6] H. F. a. O. Martin, "Engineering the optical response of plasmatic Nano antennas,” Opt. Express 16, vol. 12, pp. 9144-9145, 2008.
[7] N. E. Alu, "Tuning the scattering response of optical Nano antennas with Nano circuit loads,” at. Photonics, vol. 2, pp. 307-310, 2008.
[8] F. W. e. al, "Detection of colon cancer by terahertz techniques,” Journal of molecular science, pp. 77-82, 2011.
[9] D. Dragoman, M. Dragoman, Prog Quant Electron 28 (2004). [10] M. Tonouchi, Nature Photon. 1 (2007) 97.
[11] http://www.cell.com/trends/biotechnology/fulltext/S0167- 7799(16)30027
[12] http://www.sciencedirect.com/science/article/pii/S000926140 300856X
[13] C. B. L. I. M. C. T. K. E. H. M.R. Kutteruf, ”Terahertz spectroscopy of short-chain polypeptides,” Chemical Physics Letters, vol. 375, pp.337-343,2003.

Keywords
CST Microwave Studio, dB, dBi, FR4, High gain, High directivity, Optical antenna, Peptides, Wide band, THz, VSWR.