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It is well-known that frequency selective surfaces operate as spatial filters for the incoming electromagnetic waves with different operating frequencies, polarizations, and incident angles [1]. Due to these distinctive characteristics, frequency selective surfaces are widely used in many applications of microwave and antenna systems, such as antenna sub-reflectors, radomes, absorbers, etc. [1]. Recently,...
In this paper, a multilayer bandpass frequency selective structure (FSS) with miniaturized unit cell and ultra wide stopband is presented. The proposed structure is made up a multilayer printed circuit board with a number of via holes, which can construct stepped-impedance resonators. The operating principle is briefly explained by analyzing the electric field distributions and parametric studies...
A new three-dimensional (3D) frequency selective structure (FSS) with bandpass filtering response is presented. The proposed FSS, modified from a microstrip line based bandpass FSS, is implemented by using multilayer PCB technology, which indicates that this structure can be easily fabricated with high accuracy and should be more suitable for high frequency applications. The design concept and operating...
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