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Metamaterial Patch Antenna

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Final year project 2013

Published in: Design, Business, Technology

Metamaterial Patch Antenna

  1. 1. by NUR AZLIN BINTI ALWI KUTTY KET090025 Supervisor : Dr. Wan Norliza Wan Mahadi Date : 4 June 2013
  2. 2.  Objectives  Introduction  Simulation  Result and Discussion  Conclusion  Future Recommendation 2
  3. 3.  To design and evaluate rectangular patch antenna for mobile application.  To investigate the application of metamaterial for mobile communication.  To design and simulate metamaterial patch antenna.  To make the comparison between patch antenna with and without metamaterial. 3
  4. 4. Definitions: • Periodic materials that derive their properties from their structures and cannot be acquired in nature • Also called left-handed metamaterial. Metamaterial • A low profile antenna consisting of a metal layer over dielectric substrate and ground plane. Patch Antenna 4
  5. 5. Advantages Disadvantages • Light weight and low volume • Narrow bandwidth • Low fabrication cost • Low efficiency • Support linear and circular polarization • Low gain • Can be easily integrated with Microwave Integrated Circuit (MICs) • Low power handling capacity • Capable of dual and triple frequency operations • Extraneous radiation from feeds and junctions • Mechanically robust when mounted on rigid surfaces • Surface wave excitation Advantages and Disadvantages of Patch Antenna 5
  6. 6. Parameters Dimensions Unit Dielectric constant, 4.3 - Loss tangent, tan ∂ 0.02 - Operating Frequency 1.8 GHz Thickness, h 4.5 mm Width, W 51.19 mm Length, L 38.64 mm Width of Patch 25.59 mm Length of Patch 19.32 mm P a r a m e t e r s 6
  7. 7. 7 Microstrip Patch Antenna
  8. 8. Calculation of Patch Antenna • The width W of the patch antenna: • The effective dielectric constant (ԑeff) of the microstrip patch antenna: • The actual length of patch (L) is calculated by: 8
  9. 9. Microstrip Patch Antenna 9 FR-4 (lossy) Copper
  10. 10. Patch Antenna Design 9
  11. 11. Metamaterial Patch Antenna 11
  12. 12. Metamaterial Patch Antenna Design 12
  13. 13. S-Parameter for microstrip patch antenna Return loss = -11.32 dB at 1.808 GHz Bandwidth = 45.5 MHz 13
  14. 14. Polar Plot 14
  15. 15. Radiation Pattern Directivity = 6.813 dBi 15
  16. 16. Radiation Pattern in 2D Gain = 5.04 dB 16
  17. 17. S-Parameter for Metamaterial Patch Antenna Return loss = -23.16 dB at 1.864 GHz Bandwidth = 85.4 MHz 17
  18. 18. Return loss = -34.28 dB at frequency 888 MHz Bandwidth = 42.3 MHz 18
  19. 19. Parameters Microstrip Patch Antenna Metamaterial Patch Antenna Resonant Frequency (GHz) 1.808 1.864 and 0.888 Return loss, S11 (dB) -11.32 -23.16 and -34.28 Bandwidth (MHz) 45.5 85.4 and 42.3 19 Comparison between patch antenna and metamaterial patch antenna
  20. 20.  Both design patch antenna and metamaterial patch antenna have successfully simulated  Analysis shows that return loss and bandwidth have been achieved.  By using metamaterial, the return loss was improved and the structure provide wide bandwidth. 20
  21. 21.  Other parameters such as gain and directivity for metamaterial patch antenna design  Use another shape of the metamaterial structure on the conventional antenna 21
  22. 22. 1. C.A. Balanis, Antenna Theory and Design, John Wiley & Sons, 1997. 2. Kafesaki, M., Koschny, T., Penciu, R.S., Gundogdu, T.F., Economou, E.N. and Soukoulis, C.M. (2005) Left-handed Metamaterials: Detailed Numerical Studies of the Transmission Properties. Journal of Optics A: Pure and Applied Optics 7: S12-S22. 3. D.R. Smith, W.J. Padilla, D.C. Vier, S.C. Nemat-Nasser, S. Schultz, Composite medium with simultaneously negative permeability and permittivity, Physical Review Letters, vol. 84, pp. 4184-4187, 2000. 4. Sapana Yadav, Dr. Rekha Gupta, Neelima Choudhary, Bhim Singh, “At 1.881 GHz, Rectangular Microstrip Patch Antenna Loaded using Split Rectangle Shaped of Metamaterial Structure for Bandwidth Improvement”, International Journal of Advanced Technology & Engineering Research ,Vol. 2, Issue 5, Sept. 2012. 22

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