Hostname: page-component-cd9895bd7-gvvz8 Total loading time: 0 Render date: 2024-12-18T10:59:41.106Z Has data issue: false hasContentIssue false
  • English
  • Français

An axially slotted cylinder with specific inhomogeneous coatings

Published online by Cambridge University Press:  09 August 2017

Z.A. Awan
Z.A. Awan*
Affiliation:
Department of Electronics, Quaid-i-Azam University, Islamabad, Pakistan
*
Corresponding author: Z.A. Awan Email: [email protected]
Get access Rights & Permissions [Opens in a new window]

Abstract

An axially slotted cylinder coated with two different types of inhomogeneous coating layers is considered. These inhomogeneous coatings have decreasing permittivity profiles. The effects of various parameters of these coatings upon the gain pattern have been investigated using numerical simulations. It is studied that the gain at certain observation angles can be enhanced or diminished by controlling the inhomogeneity parameters of these considered profiles. It is further studied that for specific type of considered inhomogeneous coatings, the forward direction gain can be enhanced significantly.

Keywords

Antenna designModeling and measurementsEM field theory
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 9 , Issue 10 , December 2017 , pp. 1915 - 1924
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2017 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

[1] Hurd, R.A.: Radiation patterns of a dielectric coated axially slotted cylinder. Can. J. Phys., 34 (1956), 638–642.Google Scholar
[2] Wait, J.R.; Mienteka, W.: Slotted-cylinder antenna with a dielectric coating. J. Res. Natl. Bur. Stand., 58 (1957), 287–296.Google Scholar
[3] Shafai, L.: Radiation from an axial slot antenna coated with a homogenous material. Can. J. Phys., 50 (1972), 3072–3077.Google Scholar
[4] Knop, C.M.: External admittance of an axial slot on a dielectric coated metal cylinder. Radio Sci., 3 (1968), 803–818.CrossRefGoogle Scholar
[5] Mushref, M.A.: Radiation from a dielectric-coated cylinder with two slots. Appl. Math. Lett., 17 (2004), 721–726.Google Scholar
[6] Mushref, M.A.: Electromagnetic radiation from a coated cylinder with two arbitrary axial slots. High Frequency Electron., 9 (2010), 47–54.Google Scholar
[7] Rusch, W.V.T.: Radiation From a plasma-clad axially-slotted cylinder. J. Res. Natl. Bur. Stand. – D. Radio Propag., 67D (1963), 203–214.CrossRefGoogle Scholar
[8] Marchin, P.D.; Tyras, G.: Radiation from an infinite axial slot on a circular cylinder clad with magnetoplasma. Radio Science. J. Res. NBS/USNC–URSI, 69D (1965), 529–538.Google Scholar
[9] Chen, H.C.; Cheng, D.K.: Radiation from an axially slotted anisotropic plasma clad cylinder. IEEE Trans. Antennas Propag., 13 (1965) 395–401.Google Scholar
[10] Wu, X.B.; Ren, W.: Axial slot antenna on an anisotropic dielectric coated circular cylinder. IEE Proc. Microw. Antennas Propag., 141 (1994), 527–530.Google Scholar
[11] Richmond, J.: Axial slot antenna on a dielectric-coated elliptic cylinder. IEEE Trans. Antennas Propag., 37 (1989), 1235–1241.Google Scholar
[12] Hamid, A.K.: Axially slotted antenna on a circular or elliptic cylinder coated with metamaterials. Prog. Electromagn. Res., 51 (2005), 329–341.Google Scholar
[13] Hamid, A.K.: Elliptic cylinder with slotted antenna coated with magnetic metamaterials. Int. J. Antennas Propag., 2011 (2011), 842863-1-5.Google Scholar
[14] Awan, Z.A.: Directive gain from an axially slotted dielectric clad cylinder embedded in a metamaterial. J. Mod. Opt., 62 (2015), 560–568.Google Scholar
[15] Awan, Z.A.: Gain properties of an axially slotted cylinder with two coating layers. Int. J. Microw. Wireless Technol., 8 (2016), 1061–1068.Google Scholar
[16] Mahmoud, S.F.: Characteristics of a chiral coated slotted cylindrical antenna. IEEE Trans. Antennas Propag., 44 (1996), 814–821.Google Scholar
[17] Awan, Z.A.: Gain of an axially slotted cylinder covered with a chiral coating and embedded in a chiral medium. Appl. Opt., 54 (2015), 5889–5896.CrossRefGoogle Scholar
[18] Awan, Z.A.: Effects of bi-isotropic coatings and bi-isotropic background media upon gain characteristics of an axially slotted cylinder. Int. J. Microw. Wireless Technol., 9 (5) (2017), 1093–1102.Google Scholar
[19] Yeh, C.; Kaprielian, Z.A.: Radiation from an axially slotted cylinder coated with an inhomogeneous dielectric sheath. Br. J. Appl. Phys., 14 (1963), 677–681.Google Scholar
[20] Tyras, G.: Field of an axially slotted circular cylinder clad with an inhomogeneous dielectric. IEEE Trans. Antennas Propag., AP-15 (1967), 222–226.Google Scholar
[21] Valagiannopoulos, C.A.: Semi-analytic solution to a cylindrical microstrip with inhomogeneous substrate. Electromagnetics, 27 (2007), 527–544.Google Scholar
[22] Burman, R.: Some electromagnetic wave functions for propagation in cylindrically stratified media. IEEE Trans. Antennas Propag. (Commun.), AP-13 (1965), 646–647.CrossRefGoogle Scholar
[23] Olver, F.W.J.: NIST Handbook of Mathematical Functions, Cambridge University Press, New York, NY, USA, 2010, 10013–2473.Google Scholar
[24] Burman, R.: Addendum to: some electromagnetic wave functions for propagation in cylindrically stratified media. IEEE Trans. Antennas Propag., AP-14 (1966), 114.Google Scholar