Mode Matching- Generalized Scattering Matrix (MM-GSM)

Mode Matching- Generalized Scattering Matrix (MM-GSM)

Frequency selective surfaces (FSS) are widely used as spatial filter for the design of absorbers, radomes, dichroic plates, and reflector antennas in the microwave and millimeter wave frequency regime. In such applications, FSS structures are mainly employed to enhance the performance of the device within the specified band and reduce the radar signature outside the band. In view of this, design and analysis of various FSS structures such as free-standing, single layer, and cascaded FSS structures have been carried out based on mode matching- generalized scattering matrix (MM-GSM) technique. The design of FSS structures are mainly focused for the applications of radome and antenna.



  • Easy to formulate the problem
  • Matching of the total mode fields (E & H) at each junction
  • Includes both evanescent and propagating modes
  • Provides less computational complexity
  • Efficient for the design and analysis of multilayered radome wall and FSS-embedded radome wall.


Major milestones / results of this technique:



Ref.: Shiv Narayan, K. Prasad, R.U. Nair, and R.M. Jha, “A novel EM analysis of double-layered thick FSS based on MM-GSM technique for radome applications,” Progress In Electromagnetics Research Letters, vol. 28, pp. 53-62, 2012.

Last updated on : 10-05-2018 11:05:09am