A novel technique for the design of frequency selective structures integrated with a waveguide array

Frequency selective surface with a bistable auxetic geometry

“…One of the many uses of FSS is as a sub reflector or a diplexer in an antenna assembly, see for example [15,16]. It is therefore required to have a good reflection band (−10 dB, bandstop) and simultaneously a transmission (|S 21 |) through the surface at -0.5 dB (bandpass), as is shown in Figure 2.…”

Fast analysis of stop-band FSS integrated with phased array antennas

“…Once the periodic surfaces are characterized by their GSM, the complete equivalent network, associated to the entire stratification, is solved by the connecting the scattering matrices with equivalent transmission-lines associated to the accessible modes. This technique is similar to the multi-mode equivalent network proposed in [2], but with the use of the equivalent GSM more than admittance matrices for the periodic interfaces.…”

“…Another field of interest is the integration of FSS with phased array antennas [2], with the purpose of improving the antenna performance (widening of scan region, scan-blindness removal [3], wide angle impedance matching [4]). …”