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Numerical study of terahertz circular polarized substrate lens dipole antennas for polarization sensitive detectors

Published online by Cambridge University Press:  19 March 2015

Amna Mir ,
Junsheng Yu ,
Xiaodong Chen  and
Ishtiaq Ahmad
Amna Mir*
Affiliation:
School of Electronic Engineering, Beijing University of Posts and Telecommunications, 10 xitucheng Road, Haidian, Beijing, China
Junsheng Yu
Affiliation:
School of Electronic Engineering, Beijing University of Posts and Telecommunications, 10 xitucheng Road, Haidian, Beijing, China
Xiaodong Chen
Affiliation:
School of Electronic Engineering, Beijing University of Posts and Telecommunications, 10 xitucheng Road, Haidian, Beijing, China School of Electronic Engineering and Computer Science, Queen Mary University of London, London, E1 4NS, UK
Ishtiaq Ahmad
Affiliation:
School of Electronic Engineering, Beijing University of Posts and Telecommunications, 10 xitucheng Road, Haidian, Beijing, China
*
Corresponding author: A. Mir Email: amna_mir@hotmail.com
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Abstract

Wide band circular polarized (CP) antennas behind extended hemispherical lenses suitable for polarization sensitive THz detector and wireless communication have been designed and characterized using numerical simulation. Two novel, compact and CP dipole antennas are designed and studied for this purpose. CP property of planar antennas is achieved by geometrical modifications of antennas without any complicated feeding structure. Due to compact dimensions, wideband performance and CP behavior, these designs have applications in circular dichroism (CD) spectroscopy and terahertz detectors. This numerical study deals with polarization diversity with substrate lens, effect of off axis displacement on CP behavior of lens antenna which determines number of pixels for any application, far field patterns variation due to lens's internal reflection, directivity variation attributed to internal reflection and losses. Radiation efficiency variation of antenna by antenna dimensions is also studied carefully to design appropriate lens from application's point of view. Off axis performance of antenna on hemisphere lens is also studied and redesigning of antenna by some geometric modification has been carried out to improve far field patterns.

Keywords

Circular polarizationTerahertz planar antennaCross bow tieClover leaf antennaDielectric lensFocal plane arrayHalf power beam width
Type
Research Paper
Information
International Journal of Microwave and Wireless Technologies , Volume 8 , Issue 3: Journee Nationale des Micro-ondes (JNM) 2015 , May 2016 , pp. 623 - 631
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2015 

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References

REFERENCES

[1]Siegel, P.H.: Terahertz technology. IEEE Trans. Microw. Theory Tech., 50 (2002), 910–928.CrossRefGoogle Scholar
[2]Trichopoulos, G.C. et al. : A novel approach for improving off axis pixel performance of terahertz focal plane arrays. IEEE Trans. Microw. Theory Tech., 58 (2010), 2014–2021.Google Scholar
[3]Uehara, K. et al. : Lens coupled imaging arrays for millimeter and sub millimeter wave regions. IEEE Trans. Microw. Theory Tech., 40 (1992), 806–811.Google Scholar
[4]Van Rudd, J., Mittleman, D.M.: Influence of substrate lens design in terahertz time domain spectroscopy. J. Opt. Soc. Amer., 19 (2002), 319–328.Google Scholar
[5]Fernandes, C.A., Fernandes, C.G.: Performance of lens antennas in wireless indoor millimeter wave applications. IEEE Trans. Microw. Theory Tech., 47 (1999), 806–811.Google Scholar
[6]Rutledge, D.B., Muha, M.S.: Imaging antenna arrays. IEEE Trans. Antennas Propag., 30 (1982), 535–540.Google Scholar
[7]Lee, J.J.: Dielectric lens shaping and comma correction zoning part 1: analysis. IEEE Trans. Antennas Propag., 31 (1983), 211–216.Google Scholar
[8]Costa, J.R., Silveirinha, M.G., Fernandes, C.A.: Evaluation of double-Shell integrated scanning lens antenna. IEEE Antennas Wirel. Propag. Lett., 7 (2008), 781–784.Google Scholar
[9]Pasqualini, D., Maci, S.: High-frequency analysis of integrated dielectric lens antennas. IEEE Trans. Antennas Propag., 52 (2004), 840–847.Google Scholar
[10]Otero, P., Eleftrieriades, G.V.: Integrated modified rectangular loop slot antenna on substrate lenses for mm and sub mm wave frequencies mixer applications. IEEE Trans. Antennas Propag., 46 (1998), 1489–1497.Google Scholar
[11]Filipovic, D.F., Gearhart, S.S., Rebeiz, G.M.: Double slot antennas on extended hemispherical and elliptical silicon dielectric lenses. IEEE Trans. Microw. Theory Tech., 41 (1993), 1738–1749.Google Scholar
[12]Filipovic, D.F. et al. : Off axis properties of silicon and quartz dielectric lens antennas. IEEE Trans. Antennas Propag., 45 (1997), 760–766.Google Scholar
[13]Semnov, A. et al. : Integrated planar antennas at terahertz waves, in 16th Int. Symp. on Space and Terahertz Technology, Sweden, 2005.Google Scholar
[14]Wu, X., Eleftheriades, G.V., Emilie, T.: Design and characterization of single and multiple beam mm wave circularly polarized substrate lens antennas for wireless communications. IEEE Trans. Microw. Theory Tech., 49 (2001), 431–441.Google Scholar
[15]Migliaccio, C. et al. : W-band high gain lens antenna for metrology and radar applications. Electron. Lett., 40 (2004), 1394–1396.Google Scholar
[16]Mir, A., Yu, J.: Broadband circular polarized cross bow tie antenna for terahertz range, in Int. Symp. of Antennas and Propagation Society (APSURSI), Memphis, 2014.Google Scholar
[17]Bolster, M.F.: A new type of circular polarizer using crossed dipoles’. IRE Trans. Microw. Theory Tech., 9 (1961), 385–388.Google Scholar
[18]Nguyen, T.K. et al. : Four-leaf clover-shaped antenna on an extended hemispherical lens for a high-output-power THz photomixer, in 35th Int. Conf. on Infrared Millimeter and Terahertz Waves (IRMMW-THz), Rome, 2010.Google Scholar
[19]Woo, I. et al. : Four-leaf-clover-shaped antenna for a THz photomixer. Opt. Express, 18 (2010), 18532–18542.Google Scholar
[20]Nguyen, T.K. et al. : Numerical study of self complementary antenna characteristics on substrate lenses at terahertz frequency. J Infrared Milli Terahz Waves, 33 (2012), 1123–1137.Google Scholar
[21]Mir, A., Yu, J., Chen, X.: Design and characterization of cross bow tie array for focal plane array in terahertz imaging, 39th Int. Conf. on Infrared, Millimeter and Terahertz waves (IRMMW-THz), Tucson, Arizona, 2014, 416–417.Google Scholar
[22]Semenov, A.D. et al. : Terahertz performance of integrated lens antennas with a hot electron bolometer. IEEE Trans. Microw. Theory, 55 (2007), 239–247.Google Scholar