Equivalent circuit modeling of active frequency selective surfaces

Kihun Chang, Sang Il Kwak, Young Joong Yoon

Research output: Chapter in Book/Report/Conference proceedingConference contribution

41 Citations (Scopus)


In this paper, active frequency selective surfaces (FSS) with squared aperture with loading are described. Active FSS elements using switched PIN diodes are discussed. The unit cell consists of a square aperture element with a metal island loading and one PIN diode placed at the upper gap considering the vertical polarization. The electromagnetic properties of the active FSS structure are changed by applying a dc bias to the substrate, and estimated by the equivalent circuit model of FSS structure and PIN diode. This active FSS design enables transmission to be switched on or off at 2.3 GHz, providing high transmission when the diodes are in off state and high isolation when the diodes are on. Equivalent circuit in the structure is investigated by analyzing transmission and reflection spectra. Measurements on active FSS are compared with numerical calculation based on the scattering matrix formalism. The origin of experimentally observed frequency responses will be scrutinized.

Original languageEnglish
Title of host publication2008 IEEE Radio and Wireless Symposium, RWS
Number of pages4
Publication statusPublished - 2008
Event2008 IEEE Radio and Wireless Symposium, RWS - Orlando, FL, United States
Duration: 2008 Jan 222008 Jan 24

Publication series

Name2008 IEEE Radio and Wireless Symposium, RWS


Other2008 IEEE Radio and Wireless Symposium, RWS
Country/TerritoryUnited States
CityOrlando, FL

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Electrical and Electronic Engineering
  • Communication


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