A Triple-Band Ultra-Thin Metamaterial Absorber for Radar Cross-Section Reduction

2018 ◽  
Author(s):  
George S. Kliros ◽  
Konstantinos I. Maniotis
Keyword(s):  
Cross Section ◽  
Radar Cross Section ◽  
Metamaterial Absorber ◽  
Triple Band

scholarly journals DESAIN DAN SIMULASI METAMATERIAL ABSORBER UNTUK APLIKASI RADAR CROSS SECTION REDUCTION

2018 ◽  
Vol 6 (1) ◽  
pp. 38
Author(s):  
Heri Agus Susanto
Keyword(s):  
Cross Section ◽  
Absorption Rate ◽  
Radar Cross Section ◽  
Metamaterial Absorber ◽  
Band 3 ◽  
Radar Absorbing Material ◽  
Absorbing Material ◽  
Tracking Radar ◽  
Triple Band ◽  
Cst Microwave Studio

Adanya suatu permasalahan kendaraan militer pada kapal maritim yang mengalami pendeteksian dan penyerangan dari pesawat tempur karena kapal tersebut terdeteksi oleh adanya radar dari pesawat tempur. Hal ini disebabkan oleh adanya suatu refleksi gelombang elektromagnetik yang mengenai konduktor kapal ketika melakukan tracking radar oleh pesawat. Untuk mengatasi masalah tersebut dapat dilakukan dengan cara mengelabuhi pendeteksian oleh radar pesawat tempur agar tidak dapat melakukan penyerangan ke kapal yaitu menggunakan Radar Absorbing Material (RAM) berupa metamaterial absorber yang diimplementasikan dengan cara melapisi bagian dari body kapal tersebut dengan metamaterial absorber Metamaterial absorber didesain menggunakan perancangan optimum berdasarkan spesifikasi yang telah ditetapkan dan dilakukan simulasi antena dengan menggunakan software CST Microwave Studio 2012. Hasil simulasi metamaterial absorber menunjukkan bahwa metamaterial absorber menghasilkan tiga band (triple band) dari peak S11, dimana band 1 mempunyai nilai S11-parameter -15.547 dB pada frekuensi 8.336 GHz, sehingga menghasilkan nilai absorption rate sebesar 99.92 %. Pada band 2 frekuensi 11.008 GHz mempunyai nilai S11 sebesar -13.278 dB, oleh karena itu menghasilkan nilai absorption rate sebesar 99.78 % dan band 3 dalam frekuensi GHz menghasilkan nilai S11-parameter -8.58 dB pada frekuensi 11.664 GHz, sehingga menghasilkan nilai absorption rate sebesar 98.07 %. Dari hasil simulasi tersebut dapat dikatakan pada tiga band (triple band) dari peak frekuensi mempunyai performansi absorpsi yang baik karena nilai absorption rate lebih besar dari 80 %.

scholarly journals Gain-Enhanced Metamaterial Absorber-Loaded Monopole Antenna for Reduced Radar Cross-Section and Back Radiation

Materials ◽  
2020 ◽  
Vol 13 (5) ◽  
pp. 1247
Author(s):  
Heijun Jeong ◽  
Yeonju Kim ◽  
Manos M. Tentzeris ◽  
Sungjoon Lim
Keyword(s):  
Cross Section ◽  
Radar Cross Section ◽  
Metamaterial Absorber ◽  
Monopole Antenna ◽  
Magnetic Conductor ◽  
Low Profile ◽  
Before And After ◽  
Unit Cells ◽  
Lumped Elements ◽  
Peak Gain

This paper proposes a gain-enhanced metamaterial (MM) absorber-loaded monopole antenna that reduces both radar cross-section and back radiation. To demonstrate the proposed idea, we designed a wire monopole antenna and an MM absorber. The MM absorber comprised lumped elements of subwavelength unit cells and achieved 90% absorbance bandwidth from 2.42–2.65 GHz. For low-profile configurations, the MM absorber was loaded parallel to and 10 mm from the monopole antenna, corresponding to 0.09 λ0 at 2.7 GHz. The monopole antenna resonated at 2.7 GHz with a 3.71 dBi peak gain and 2.65 GHz and 6.46 dBi peak gain, before and after loading the MM absorber, respectively. Therefore, including the MM absorber increased peak gain by 2.7 dB and reduced back radiation by 15 dB. The proposed antenna radar cross-section was reduced by 2 dB compared with a monopole antenna with an artificial magnetic conductor.

scholarly journals Design of low-radar cross section microstrip antenna based on metamaterial absorber

2013 ◽  
Vol 62 (6) ◽  
pp. 064103
Author(s):  
Yang Huan-Huan ◽  
Cao Xiang-Yu ◽  
Gao Jun ◽  
Liu Tao ◽  
Ma Jia-Jun ◽  
...  
Keyword(s):  
Cross Section ◽  
Microstrip Antenna ◽  
Radar Cross Section ◽  
Metamaterial Absorber

scholarly journals Design of ultrathin broadband perfect metamaterial absorber with low radar cross section

2013 ◽  
Vol 62 (19) ◽  
pp. 194101
Author(s):  
Li Si-Jia ◽  
Cao Xiang-Yu ◽  
Gao Jun ◽  
Zheng Qiu-Rong ◽  
Zhao Yi ◽  
...  
Keyword(s):  
Cross Section ◽  
Radar Cross Section ◽  
Metamaterial Absorber ◽  
Perfect Metamaterial Absorber

scholarly journals Transparent metamaterial absorber with broadband radar cross-section (RCS) reduction for solar arrays

2020 ◽  
Vol 14 (13) ◽  
pp. 1580-1586
Author(s):  
Xiangkun Kong ◽  
Shunliu Jiang ◽  
Lingqi Kong ◽  
Qi Wang ◽  
Haobin Hu ◽  
...  
Keyword(s):  
Cross Section ◽  
Radar Cross Section ◽  
Metamaterial Absorber ◽  
Solar Arrays

Multistep Cylindrical Structure Analysis at Normal Incidence Based on Water-Substrate Broadband Metamaterial Absorbers

2018 ◽  
Vol 73 (2) ◽  
pp. 171-173 ◽  
Author(s):  
Chonghua Fang
Keyword(s):  
Cross Section ◽  
Normal Incidence ◽  
Metal Structure ◽  
Radar Cross Section ◽  
Metamaterial Absorber ◽  
The Other ◽  
Cylindrical Structure ◽  
Cylindrical Metal ◽  
Good Accordance ◽  
Metamaterial Absorbers

AbstractA new multistep cylindrical structure based on water-substrate broadband metamaterial absorbers is designed to reduce the traditional radar cross-section (RCS) of a rod-shaped object. The proposed configuration consists of two distinct parts. One of these components is formed by a four-step cylindrical metal structure, whereas the other one is formed by a new water-substrate broadband metamaterial absorber. The designed structure can significantly reduce the radar cross section more than 10 dB from 4.58 to 18.42 GHz which is the 86.5 % bandwidth of from C-band to 20 GHz. The results of measurement show reasonably good accordance with the simulated ones, which verifies the ability and effect of the proposed design.

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