A Novel Frequency Selective Surface with Improved Miniaturization Performance

Abstract

Based on previous work, a novel Frequency Selective Surface (FSS) consisting of two metallic layers is proposed. The first layer is inductive-designed to generate the band-pass performance, while the second layer is capacitive-designed so that the miniaturization characteristic can be further improved. As a result, compared with the traditional single-layer structure, the profile of the FSS proposed is relatively small with the cell’s dimension only 0.0814λ × 0.0814λ. Moreover, the structure’s stability corresponding to waves of different polarizations and incident angles are also testified, which ensures the practicability of the proposed structure

Analysis and Characterization of Finite-size Curved Frequency Selective Surfaces

“…In (Wu, Zhang, Xu, Yang & Lin, 2014) a 3-D FSS structure made of honey-combed spiral metallizations shows very good stability across the operating bands for WiFi, Blue Tooth and WLAN communications. High degree of miniaturization in combination with good angle stability is reported in (Li, Zhang, Yang, &Wu, 2012). Its first layer is inductive to generate band-pass behavior, while the second layer is capacitive-designed so that the miniaturization characteristic can be further improved.…”

A dual-band sine-square FSS design

“…Classic FSS unit cell designs, such as the square, the ring and the cross-dipoles, are commonly used due to their simple design and general good performance. Complex versions of these designs such as convolutions, fractals and combinations, or even other unrelated designs, are also exploited for improved frequency response, angular selectivity or alternative desired performance factors [2][3][4][5][6][7]. To achieve a dual band frequency response, most published results in the open literature use multiple FSS layers, one for each desired frequency band, or employ discrete components to modify the FSS states [8][9][10][11].…”

Design of a Compact Passband Frequency Selective Surface with Stable Resonance

“…This may be due to strong surface impedance dependence at oblique incidence on the plane and polarization. However, it can also be found that the shifts of the frequency response with the change O p e r a t i n g b a n d Dual [6] 2.208 0 × 2.208 0 3.4, 0.5 mm Single Dual [7] 0.104 0 × 0.104 0 4.4, 1.6 mm Single Dual [8] 0.081 0 × 0.081 0 2.65, 1.5 mm Single Dual [9] 0.062 0 × 0.062 0 3.66, 0.254 mm Single Single [10] 0.172 0 × 0.172 0 4.3, 1.6 mm Single Single [11] 0.095 0 × 0.095 0 4.3, 1.6 mm Single Dual [12] 0.061 0 × 0.061 0 2.65, 1 mm Dual Single [13] 0.088 0 × 0.088 0 4.3, 1.6 mm Dual Single [14] 0 of the incident angle are opposite for transverse magnetic (TM) and transverse electric (TE) incidences. It is further observed from Figure 2 that the variation in the amplitude levels (i.e., the resonance bandwidth) in TM mode increases with increase in the angle of incidence, whereas in TE mode, it is falling rapidly as the angle of incidence increases.…”

“…Later, in [7] the smaller element size FSS has been proposed in contrast to [6] with better resonance stability with respect to the different incident angles and polarization. A better reduction of other novel unit cells has been also proposed by adding another layer on the other side of octagonal FSS [8] and the metallic line between square patches [9]. Other novel FSS patterns have been proposed for the single band [10,11] as well as dual-band [12][13][14], applications with stable resonance frequency at the different incident angles.…”

“…These parameters normally control the overall frequency response of the structure, such as its resonance frequency, bandwidth, and dependence on the polarization and incidence angle. In recent years, several structures have been proposed to miniaturize the FSS [6][7][8][9][10][11][12][13][14]. Metallic patches and wire mesh separated by thin airgaps constituting an FSS [6] have been proposed at X-band.…”