TY - GEN
T1 - Equivalent circuit modeling of active frequency selective surfaces
AU - Chang, Kihun
AU - Kwak, Sang Il
AU - Yoon, Young Joong
PY - 2008
Y1 - 2008
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=50949124362&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=50949124362&partnerID=8YFLogxK
U2 - 10.1109/RWS.2008.4463579
DO - 10.1109/RWS.2008.4463579
M3 - Conference contribution
AN - SCOPUS:50949124362
SN - 1424414636
SN - 9781424414635
T3 - 2008 IEEE Radio and Wireless Symposium, RWS
SP - 663
EP - 666
BT - 2008 IEEE Radio and Wireless Symposium, RWS
T2 - 2008 IEEE Radio and Wireless Symposium, RWS
Y2 - 22 January 2008 through 24 January 2008
ER -