A Novel 2-B Multifunctional Active Frequency Selective Surface for LTE-2.1 GHz

Li, Huangyan; Cao, Qunsheng; Wang, Yi

doi:10.1109/tap.2017.2688927

Cited by 93 publications

(50 citation statements)

References 45 publications

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“…In recent years, metasurfaces loaded with lumped elements have aroused the interest of researchers. Typical lumped elements utilized in metasurfaces include PIN diodes [1] and resistors [2]. Particularly, some articles have applied the metasurfaces to design waveguide limiter and filter.…”

Section: Introductionmentioning

confidence: 99%

Energy Selective Filter with Power-Dependent Transmission Effectiveness in Waveguide

Lin

Zhang

et al. 2019

Electronics

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A novel Energy Selective Filter (ESF) mounted in waveguide is presented based on nonlinear element, which is sensitive to the power intensity of incident wave achieving frequency selection as well as energy selection. The proposed ESF consists of three parts, the middle circuit board with diode loaded, the upper and bottom ground metallic patches. The mechanism of the ESF is analyzed through equivalent circuit model and its performance is investigated numerically and experimentally. According to the waveguide measurement, a shielding effectiveness of 13 dB is achieved in case of high power input and the insertions loss is less than 0.3 dB across the whole frequency range when low power signal inputs. It is a pluggable component in waveguide that could reflect high power signals of specific frequency to protect the following electronic equipment.

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Section: Introductionmentioning

confidence: 99%

Energy Selective Filter with Power-Dependent Transmission Effectiveness in Waveguide

Lin

Zhang

et al. 2019

Electronics

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“…The response of the FSS changes when the state of such active device (e.g., PIN diode) switches from ON to OFF or vice versa, which depends on the external DC bias source. Broadly, two classes of electrically controlled AFSSs are defined including the switchable AFSSs, and the tunable AFSSs [154]. The first kind of AFSS toggles its response at the desired frequency band, between the transmission and reflection characteristics [155], whereas the second type of AFSS can shift the resonant frequency in a certain frequency band [152].…”

Section: Microwave Absorbing Fsssmentioning

confidence: 99%

“…Polarization is a salient characteristic of EM waves that is desired to be manipulated in controlling incident waves. A prospective useful alternative solution to earlier single featured AFSS has been given in [154], in which a novel multifunctional AFSS structure, concurrently exhibiting over one operating mode, is proposed at working frequency band of LTE 2.1 GHz. It consists of two orthogonal metallic layers with a thin dielectric spacer in between.…”

Section: Microwave Absorbing Fsssmentioning

confidence: 99%

Frequency Selective Surfaces: A Review

2018

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The intent of this paper is to provide an overview of basic concepts, types, techniques, and experimental studies of the current state-of-the-art Frequency Selective Surfaces (FSSs). FSS is a periodic surface with identical two-dimensional arrays of elements arranged on a dielectric substrate. An incoming plane wave will either be transmitted (passband) or reflected back (stopband), completely or partially, depending on the nature of array element. This occurs when the frequency of electromagnetic (EM) wave matches with the resonant frequency of the FSS elements. Therefore, an FSS is capable of passing or blocking the EM waves of certain range of frequencies in the free space; consequently, identified as spatial filters. Nowadays, FSSs have been studied comprehensively and huge growth is perceived in the field of its designing and implementation for different practical applications at frequency ranges of microwave to optical. In this review article, we illustrate the recent researches on different categories of FSSs based on structure design, array element used, and applications. We also focus on theoretical breakthroughs with fabrication techniques, experimental verifications of design examples as well as prospects and challenges, especially in the microwave regime. We emphasize their significant performance parameters, particularly focusing on how advancement in this field could facilitate innovation in advanced electromagnetics.

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“…Nonetheless, only intrinsic bifunctionality can be achieved in these studies, whereas real‐time and active manipulations of electromagnetic waves for multifunctional applications have yet to be realized. Recently, a new multifunctional active frequency selective surface (MAFSS), which integrates two electromagnetic functions and can switch between four different working states actively, has been proposed in our previous work based on the PIN diode technique . All PIN diodes of the same column are fed in series, so that the required excitation voltages for biasing them are high and the working reliability of the MAFSS could also be largely weakened when any device damage occurs.…”

Section: Introductionmentioning

confidence: 99%

“…The functional diversity and the state variability of many newly developed electronic devices necessitate the design of multifunctional structures that possess multiple functional states. [12][13][14][15] In reference 12 , a dual-functional metasurface is presented to flexibly control the emission beams. Circularly-polarized bifunctional metasurfaces, which can control electromagnetic waves depending on handedness, are realized.…”

Section: Introductionmentioning

confidence: 99%

Dual-functional active frequency selective surface using parallel feeding configuration and its equivalent circuit model

Costa

Fang

et al. 2018

Int J RF Microw Comput Aided Eng

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A dual‐functional active frequency selective surface (AFSS), which integrates two independent and dividable functions, is presented in this article. The proposed structure consists of two orthogonally arranged metallic layers, separated by a thin dielectric layer. Different active devices, including varactor diodes and PIN diodes, are loaded on top and bottom metallic layers, separately. Thus, the frequency tuning function for transverse magnetic waves and the electromagnetic switching function for transverse electric waves can be attained, respectively, by controlling the working states of these active components. In addition, a novel feeding configuration is designed to mitigate the negative impact of the bias network and provide parallel feeding topology simultaneously. Detailed equivalent circuit models for different polarizations and states are constructed to characterize the AFSS structure. Finally, a prototype of the proposed structure is fabricated and measured for verification, and the experimental observations agree well with the simulated results. This dual‐functional AFSS could be an important step toward multifunctional AFSSs that are endowed with more than two electromagnetic functions.

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A Novel 2-B Multifunctional Active Frequency Selective Surface for LTE-2.1 GHz

Cited by 93 publications

References 45 publications

Energy Selective Filter with Power-Dependent Transmission Effectiveness in Waveguide

Energy Selective Filter with Power-Dependent Transmission Effectiveness in Waveguide

Frequency Selective Surfaces: A Review

Dual-functional active frequency selective surface using parallel feeding configuration and its equivalent circuit model

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