A High-gain and Low-scattering Waveguide Slot Antenna of Artificial Magnetic Conductor Octagonal Ring Arrangement

Xiao, Liu; Gao, Jun; Cao, Xiangyu; Zhao, Yuxia; Li, Wenqiang; Li, Sijia; Li, Nan

doi:10.13164/re.2016.0046

Cited by 5 publications

(5 citation statements)

References 15 publications

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“…In Reference , EBG structures were applied for RCSR, however, in this method during in band RCSR gain loss is observed around 2 dB, which needs to be improved. RCSR of an antenna has been obtained by a square and octagonal ring shaped AMC structure in Reference . Jiang et al presented partially reflecting surface antenna for in band and out of band RCSR in the range of 8‐17 GHz .…”

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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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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“…Artificial Magnetic Conductor (AMC) is a kind of Artificial Electromagnetic Material (AEMM) [1][2][3][4][5] with characteristics of a perfect magnetic conductor (PMC), which is periodically arranged by a specific shape of unit cell [6]. Due to the unique property of reflection phase, AMC has been widely applied to antennas in improving the overall performances, such as gain enhancement [7][8][9][10][11] or RCSR [12][13][14][15][16][17][18][19]. In reference [12], a novel frequency selective surface (FSS) is proposed in MIMO antennas design.…”

Section: Introductionmentioning

confidence: 99%

“…However, the radiation properties of antennas are not improved among the aforementioned works. The improvements of scattering and radiation performances are both obtained in [17] by exploiting a square-shaped AMC with octagonal ring arrangement. But the operation band of the above antenna is relatively narrow.…”

Section: Introductionmentioning

confidence: 99%

Wideband RCS Reduction and Gain Enhancement for a Patch Antenna with Broadband AMC Structure

Ge¹,

Zhao²,

Chen³

2019

RADIOENGINEERING

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In this paper, a simultaneous improvement of radiating and scattering performance for a patch antenna is realized. For achieving the wideband low-scattering property, a broadband AMC structure with orthogonally slot-embedding is proposed and analyzed, which is arranged around the antenna with another square ring unit in a chessboard configuration for phase cancellation. Meanwhile, a gain increment is also achieved due to the coupling between the radiation patch and the broadband AMC structure. Measured results indicate that at least a 10 dB RCS reduction is obtained from 11 GHz to 17.8 GHz. Additionally, the gain of the antenna has also been increased for more than 2 dB between 12 GHz and 13 GHz.

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“…One of the problems with previous MMA designs is RCS reduction achieved at the cost of the increased size of the substrate. Thus, this does not support miniaturization and turn out to be the unreliable and uneconomical solution [25]- [27]. Therefore, we have tried to achieve the RCS reduction without increasing the periodicity of antenna unit cell structure.…”

Section: Introductionmentioning

confidence: 99%

RCS Reduction of Patch Array Using Shorted Stubs Metamaterial Absorber

Singh¹,

Srivastava²

2018

jcm

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A novel design approach for the out of band radar cross section (RCS) reduction of a conventional 2 2 patch antenna arrays using shorted stubs metamaterial absorber (MMA) operating in X-band has been proposed. Firstly, an ultrathin MMA unit cell with a central frequency of 10 GHz is designed and its scattering parameters, absorbance characteristics and polarization sensitivity have been analyzed. Then, a patch antenna array has been designed at a resonant frequency of 7.54 GHz. Simulation and experimental results exhibit that when patch antenna array is loaded with MMA, its monostatic and bistatic RCS response reduces significantly for the horizontal as well for vertical polarization. However, it has negligible influence on the radiation characteristics, whilst the bandwidth, gain and overall performance of patch array preserved simultaneously. Finally, a compatibility of observation achieved between simulated and measured results.

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A High-gain and Low-scattering Waveguide Slot Antenna of Artificial Magnetic Conductor Octagonal Ring Arrangement

Abstract: Abstract. A novel design of high-gain and low-scattering

Cited by 5 publications

References 15 publications

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

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

Wideband RCS Reduction and Gain Enhancement for a Patch Antenna with Broadband AMC Structure

RCS Reduction of Patch Array Using Shorted Stubs Metamaterial Absorber

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