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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 frequency selective structure (FSS) using stacked strip lines is presented to exhibit bandpass response with sharp roll-off characteristic. In order to obtain the desirable transmission poles and zeros, two shorted via holes are introduced in reasonable locations of each strip line. The design concept is briefly described and parametric studies are carried out to explain the operating...
Frequency selective rasorber (FSR) is a very useful application of frequency selective surfaces, which can not only transmit incident plane electromagnetic waves in its passband, but also absorb the reflected waves at other frequencies. In this paper, a new concept of 3D FSR is firstly described. A generalized equivalent circuit based on multi-mode resonators is then introduced to explain the operating...
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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