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A novel miniaturized frequency selective surface
摘要： A novel single layer miniaturized frequency selective surface made of circular unit cell elements is presented in this article. The frequency selective surface (FSS) unit cell measures 0.055λ0 × 0.055λ0, where λ0 corresponds to its free space wavelength. The proposed FSS offers band stop characteristics with bandwidth of 137.5 MHz centered at 1.39 GHz. The symmetrical structure of the unit cell elements provides polarization independency. The miniaturized unit cell elements help achieving angular independency for both TE and TM mode of polarization. The miniaturized design provides excellent angular independency with negligible frequency shift for varying incident angles. A prototype of the FSS is fabricated and its simulation results are validated using measurements.
关键词： polarization,frequency selective surfaces (FSS),miniaturization
更新于2025-09-19 17:15:36
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A Novel Faraday-Cage Inspired FSS Shield for Stable Resonance Performance Characteristics
摘要： In this latter, a novel Faraday cage inspired frequency selective surface (FSS) array is illustrated to patch-type periodic element. A metallic via has been used to stow the two patch conducting arrays printed on either side of the substrate. The intended application of the proposed electromagnetic (EM) structure is at microwave frequencies for improved bandwidth characteristics and stable resonance response. The structure shows a very stable resonance performance up to 60o oblique incident angle and 11.52% improvement in its fractional bandwidth. In addition, the simulation results of proposed design prove the validity of proposed structure for high microwave powers. Finally, the fabricated prototype along with experimental results of the Faraday cage array show the efficacy of proposed structural design.
关键词： Faraday cage,High power handling,Electromagnetic (EM) performance,Frequency Selective Surfaces (FSS),Substrate Integrated Waveguide (SIW)
更新于2025-09-10 09:29:36
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[Institution of Engineering and Technology 12th European Conference on Antennas and Propagation (EuCAP 2018) - London, UK (9-13 April 2018)] 12th European Conference on Antennas and Propagation (EuCAP 2018) - Wireless Detection of Moving Chipless Tags made of Metamaterial Resonators
摘要： An innovative reading procedure based on the Inverse Synthetic Aperture Radar technique aimed at improving the reliability of chipless RFID tags wireless detection is presented. More in detail, the considered scenario comprises a moving tagged item travelling along a known path. The detection scheme relies on the integration of multiple received signals and benefits from the information on the background echo, which is intrinsic to the procedure. This technique greatly enhances the detection probability in complex scenarios subject to a high level of clutter. An equivalent model for the detection procedure of chipless tags in a noisy environment is presented. Successful experimental tests of tag readings with low Signal to Noise Ratio (SNR) are illustrated.
关键词： Artificial Impedance Surface (AIS),Chipless RFID,Inverse Synthetic Aperture Radar (ISAR),Frequency Selective Surfaces (FSS)
更新于2025-09-04 15:30:14