Experimental Validation of a Frequency-Selective Surface-Loaded Hybrid Metamaterial Absorber With Wide Bandwidth

Sharma, Atipriya; Panwar, Ravi; Khanna, Rajesh

doi:10.1109/lmag.2019.2898612

Cited by 57 publications

(19 citation statements)

References 27 publications

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“…In recent years, FSSs have attracted much attention from the scientific community due to their spatial filtering operation [3 ]. FSS plays a significant role in the development of thin and broadband radar wave absorber for stealth applications [4 ]. A detailed description of distinct kinds of passive and active FSS geometries is provided in [4–6 ].…”

Section: Introductionmentioning

confidence: 99%

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Microwave non‐destructive testing of active frequency selective surface embedded tunable radar absorber

2020

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The development and performance evaluation of a thin, broadband, and tunable radar wave absorber with reduced complexity is a strenuous task. This Letter reports the design, fabrication, and non‐destructive measurement of an active frequency selective surface (FSS) embedded tunable radar absorber. The proposed absorber design consists of periodically patterned, PIN diode mounted‐active transmissive/reflective FSS with a straightforward bias network. The tunable absorption characteristics are obtained over a wide frequency range by controlling the bias voltage of PIN diodes. The features of the proposed tunable absorber are demonstrated through non‐destructive free space, microwave measurement of a fabricated prototype. The measurement results show the achievement of a remarkable bandwidth of 3.0 GHz, which enables dynamic control of the absorption characteristics ranging from 8.2 to 12.4 GHz. Such an approach paves the way toward the realisation of smart materials and structures for electromagnetic wave manipulation.

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Section: Introductionmentioning

confidence: 99%

“…FSS plays a significant role in the development of thin and broadband radar wave absorber for stealth applications [4 ]. A detailed description of distinct kinds of passive and active FSS geometries is provided in [4–6 ]. Passive FSSs have certain inevitable shortcomings, which limits their usage in the development of absorber.…”

Section: Introductionmentioning

confidence: 99%

Microwave non‐destructive testing of active frequency selective surface embedded tunable radar absorber

2020

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“…Electromagnetic (EM) absorbers are recent trends in the field of antenna design, sensing, electromagnetic clocking, low cross-section materials for radar, and stealth technologies for military purposes and thermo-photovoltaic applications [1][2][3][4][5][6][7][8][9][10][11][12]. A perfect metamaterial (MM) absorber [13] is expected to absorb almost the entire EM signal, with very little or none to be reflected back to the source.…”

Section: Introductionmentioning

confidence: 99%

Design of a Novel Double Negative Metamaterial Absorber Atom for Ku and K Band Applications

et al. 2019

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This paper presents a multiband metamaterial (MM) absorber based on a novel spiral resonator with continuous, dual, and opposite P-shape. The full wave analysis shows 80.06% to 99.95% absorption at frequencies range for Ku and K bands for several substrate materials of 100 mm2 area. The results indicate that the absorption rate remains similar for different polarizing angles in TEM mode with different substrates. With FR4 (Flame Retardant 4) substrate and 64 mm2 ground plane, the design acts as single negative (SNG) MM absorber in K band resonance frequencies (19.75–21.37 GHz) and acts as double negative (DNG) absorber in Ku band resonance frequencies (15.28–17.07 GHz). However, for Rogers 3035 substrate and 36 mm2 ground plane, it acts as an SNG absorber for Ku band resonance frequency 14.64 GHz with 83.25% absorption and as a DNG absorber for K band frequencies (18.24–16.15 GHz) with 83.69% to 94.43% absorption. With Rogers 4300 substrate and 36 mm2 ground plane, it acts as an SNG absorber for Ku band at 15.04 GHz with 89.77% absorption and as DNG absorber for K band frequencies (22.17–26.88 GHz) with 92.87% to 93.72% absorption. The design was fabricated with all three substrates and showed quite similar results as simulation. In comparison with other broadband absorbers, this proposed MM absorber illustrated broad incidence angles in TEM mode.

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“…Many ways have been reported to reduce RCS from the last few years, such as frequency selective surfaces (FSS), artificial magnetic conductor (AMC), and electromagnetic band‐gap structures (EBG) . Metamaterial (MMs) are artificial materials, which are engineered to possess unique EM properties that are not found in naturally occurring materials . Shang et al introduced a low RCS microstrip patch antenna .…”

Section: Introductionmentioning

confidence: 99%

“…[8][9][10] Metamaterial (MMs) are artificial materials, which are engineered to possess unique EM properties that are not found in naturally occurring materials. 11,12 Shang et al introduced a low RCS microstrip patch antenna. 3 In this work, a remarkable reduction in RCS has been achieved by replacing the ground plane of the reference antenna with a complex ground plane, which consists of FSS unit cells.…”

Section: Introductionmentioning

confidence: 99%

Design and development of low radar cross section antenna using hybrid metamaterial absorber

Sharma

Panwar

Khanna

2019

Micro & Optical Tech Letters

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An efficient approach is presented in this article, to reduce radar cross section (RCS) of a microstrip patch antenna, without affecting other radiation characteristics by the application of a novel hybrid metamaterial (MM) structure. The microstrip antenna is designed to operate at 4.2 GHz. Three different configurations of MM structures (ie, CB_1, CB_2, and hybrid) with splitted square and ring shaped two nonidentical MM cells are designed and critically analyzed in the range of 2‐18 GHz. A hybrid MM configuration is chosen for the design and implementation of low RCS antenna due to its exceptional performance as compared to CB_1 and CB_2. The hybrid MM is organized in chessboard configuration, comprises of splitted square and ring shaped MM unit cell. The results show that proposed antenna gives substantially out of band RCS reduction from 6 to 18 GHz and the proposed antenna has a lower RCS than the reference antenna. Proposed antenna attains wideband bandwidth around 7.4 GHz (ranging 2.0‐4.4 GHz, 7.8‐9.1 GHz, and 14.3‐18 GHz). The maximum reduction of −30.1 dBsm at 16.4 GHz is achieved in the hybrid MM structure impinged microstrip patch antenna. Finally, the fabrication and performance evaluation of MM loaded antenna is carried out. Moreover, measured results of the fabricated samples are closely matched with simulated results, which prove the effectiveness of the adopted approach for practical applications.

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Experimental Validation of a Frequency-Selective Surface-Loaded Hybrid Metamaterial Absorber With Wide Bandwidth

Cited by 57 publications

References 27 publications

Microwave non‐destructive testing of active frequency selective surface embedded tunable radar absorber

Microwave non‐destructive testing of active frequency selective surface embedded tunable radar absorber

Design of a Novel Double Negative Metamaterial Absorber Atom for Ku and K Band Applications

Design and development of low radar cross section antenna using hybrid metamaterial absorber

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