J4 ›› 2015, Vol. 42 ›› Issue (5): 92-97.doi: 10.3969/j.issn.1001-2400.2015.05.016

• Original Articles • Previous Articles     Next Articles

Improved quasi-static effective medium model of the electromagnetic band gap (EBG) high-impedance surface

SU Zijian;LIANG Changhong;LI Long;ZHAI Huiqing   

  1. (Science and Technology on Antenna and Microwave Lab., Xidian Univ., Xi'an  710071, China)
  • Received:2014-06-11 Online:2015-10-20 Published:2015-12-03
  • Contact: SU Zijian E-mail:suzijian1984@gmail.com

Abstract:

For the complex electromagnetic property of the electromagnetic band gap (EBG) high-impedance surface, an improved quasi-static effective medium model is proposed, which makes a quantitative relationship among the geometry, medium properties and the electromagnetic properties of the EBG high-impedance surface. The macroscopic interaction of the wave with the EBG high-impedance surface is equivalent to that of the wave with an effective medium when the wavelength is large compared with the dimension of each cell of the high-impedance surface. With the effective medium model proposed by quasi-static electromagnetic theory, designs of the high-impedance surface and its application system such as antenna system can be implemented separately. Some numerical simulations and experiments of practical high-impedance surfaces are given to illustrate the applications and validity of the proposed model.

Key words: electromagnetic band-gap high-impedance surface, quasi-static analysis, effective medium model

CLC Number: 

  • TN602