Abstract
In the abstract, a frequency selective rasorber (FSR) with a wide passband and double polarization reconfigurability is suggested. Two layers make up the FSR: the first is a lossy frequency selective surface (FSS), which is composed of energy-absorbing meander lines and lumped resistors. Characteristic mode analysis can be used to locate the lumped resistors. The lossless FSS layer, which has PIN diodes for reconfigurable functionalities, is a further layer. For a broad passband, the lossless FSS has three layers. The lower band's absorption bands run from 2.73GHz to 3.76GHz, while the upper band's absorption bands span 6.07GHz to 7.94GHz when PIN diodes are off. The reflect band, on the other hand, covers the frequency range of 4.21GHz to 5.88GHz and has a value greater than −3dB. The pass-band with insertion loss less than −1dB ranges from 3.82GHz to 5.3GHz when the PIN diodes are turned on. The absorption band spans from 5.9GHz to 7GHz concurrently.
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