Scattering from Parabolic Cylindrical Reflector Antenna using Physical Optics

Öz

In this study, numerical analysis of scattering from a dielectric-coated metallic reflector is presented. The reflector has a parabolic cross-sectional cylindrical geometry. Radiation patterns and aperture efficiency parameters are analyzed using physical optics. A complex source point located at the focal point of the parabolic reflector is used as the source of radiation. The dielectric-coated metallic reflector is considered as an antenna, and an impedance boundary is utilized. The effects of coating on radiation patterns are analyzed in terms of dielectric thickness and dielectric permittivity. Numerical results are presented for various parameters, including dielectric permittivity, dielectric layer thickness, complex source point width, and focal distance.

Anahtar Kelimeler

• Scattering
• Physical optics
• Impenetrable sheet
• Cylindrical parabolic reflector

Kaynakça

1. Balanis CA. 2016. Antenna theory: analysis and design. John Wiley Sons, New Jersey, USA, 4th ed., pp: 875–920.
2. Bhattacharyya AK. 1995. High-frequency electromagnetic techniques: recent advances and applications. Wiley-Interscience, New York USA, pp: 487.
3. Bie M, Peng M, Jiang ZH, Werner DH. 2023. Modal expansion analysis inverse-design and experimental verification of a broadband high-aperture efficiency circular short backfire antenna loaded with anisotropic impedance surfaces. IEEE Transactions Anten Propag, 71(6): 4783-4798.
4. Bleszynski EH, Bleszynski MK, Jaroszewicz T. 1993. Surface-integral equations for electromagnetic scattering from impenetrable and penetrable sheets. IEEE Antennas Propag Mag, 35(6): 14-25.
5. Chang L, Chen L‐L, Zhang J‐Q, Chen Z‐Z. 2021. A compact wideband dipole antenna with wide beamwidth. IEEE Antennas Wirel Propag Lett, 20(9):1701‐1705.
6. Galuscak R, Mazanek M, Hazdra P, Kabourek V. 2018. A dual-band reflector feed in coaxial configuration for satellite communication. IEEE Antennas Propag Mag, 60: 89–94.
7. Ge L, Gao S, Zhang D, Li M. 2018. Magnetoelectric dipole antenna with low profile. IEEE Antennas Wirel Propag Lett, 17(10): 1760‐1763.
8. Granet C, Zhang HZ, Forsyth AR, Graves GR, Doherty P, Greene KJ, James GL, Sykes P, Bird TS, Sinclair MW, Moorey G, Manchester RN. 2005. The designing manufacturing and testing of a dual-band feed system for the Parkes radio telescopes. IEEE Antennas Propag Mag, 47: 13–19.

9. Kuyucuoglu F, Oğuzer T, Avgin I, Altintas A. 2014. Analysis of an arbitrary-profile cylindrical impedance reflector surface illuminated by an E-polarized complex line source beam. J Electromag Waves Applicati, 28(3): 360-377.
10. Lu S, Qu SW. 2023. Low-profile dual-band reflector antenna for high-frequency applications. Sensors, 23(13): 5781.
11. Maliuzhinets G. D. 1959. Excitation reflection and emission of surface waves from a wedge with given face impedance. Sov Phys Dokl, 3: 752–755.
12. Qudrat-E-Maula M, Shafai L. 2012. Low-cost microstrip-fed printed dipole for prime focus reflector feed. IEEE Trans Antennas Propag, 60(11): 5428-5433.
13. Rahmat-Samii Y, Haupt R. 2015. Reflector antenna developments: A perspective on the past present and future. IEEE Antennas Propag Mag, 57 (2): 85–95.
14. Tiberio R, Pelosi G, Manara G. 1985. A uniform GTD formulation for the diffraction by a wedge with impedance faces. IEEE Trans Antennas Propag, 33: 867–873.
15. Umul YZ. 2006. Modified theory of the physical-optics approach to the impedance wedge problem. Opt Lett, 31: 401–403.
16. Umul YZ. 2007. Edge-dislocation waves in the diffraction process by an impedance half-plane. J Opt Soc Am A, 24: 507–511.
17. Umul YZ. 2008. Scattering of a line source by a cylindrical parabolic impedance surface. JOSA A 25(7): 1652-1659.
18. Volakis JL. 1986. A uniform geometrical theory of diffraction for an imperfectly conducting half-plane IEEE Trans. Antennas Propag, 34: 172–180.
19. Wang C, Wu J, Ma B-Y, Guo Y-X. 2020. A 3D-printed K/Ka-band dual circularly polarized feed for offset-fed reflector antennas. In: Proceedings of the IEEE Asia-Pacific Microwave Conference, December 8–11, Hong Kong, China, pp. 558–560.
20. Wu L, Peng S, Xu J, Xiao Z. 2016. A W-band radiometer with the offset parabolic antenna for radiometric measurements. Int J Antennas Propag, 2016: 1–9.
21. Wu R, Xue Q, Chu QX, Chen FC. 2021. Ultrawideband dual‐polarized antenna for LTE600/LTE700/GSM850/GSM900 application. IEEE Antennas Wirel Propag Lett, 20(7): 1135‐1139.