Capacitive Circuit Method for Fast and Efficient Design of Wideband Radar Absorbers

Zadeh, Ali Kalantar; Karlsson, Anders

doi:10.1109/tap.2009.2024490

Cited by 201 publications

(112 citation statements)

References 12 publications

(17 reference statements)

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“…Especially, since the resistivity of the homogenous resistive sheets are ideally frequency independent, modeling the absorber over a very large frequency interval with simple circuit elements (resistances and transmission lines) is eortless. Jaumann absorbers do not suer from the harmonic or anti-resonance problems of circuit analog absorbers made of band-stop frequency selective surfaces [9,15,16]. An eight resistive sheets Jaumann absorber can satisfy the bandwidth requirement of the design objective.…”

Section: Firstmentioning

confidence: 99%

“…the hexagon ring, for the dipole shape elements second harmonic shows up). Before the harmonic frequency the anti-resonance eect takes place [9,1416]. Consequently for a bandwidth ratio of 10:1, all these phenomena must be taken into consideration in the circuit model of FSS layers and the matching process of the absorber.…”

Section: Intermediatementioning

confidence: 99%

“…By the aid of the capacitive circuit absorber method [9], an excellent absorber is designed with a very large bandwidth (3.26 − 34.65 GHZ, f H /f L ≈ 10.6). This bandwidth is unique among all the designs ever published [2,3,8,10,1416].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Nonmagnetic Ultrawideband Absorber With Optimal Thickness

Kazemzadeh

2011

IEEE Trans. Antennas Propagat.

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Section: Firstmentioning

confidence: 99%

Section: Intermediatementioning

confidence: 99%

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Nonmagnetic Ultrawideband Absorber With Optimal Thickness

Kazemzadeh

2011

IEEE Trans. Antennas Propagat.

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“…While the analysis of planar infinite FSS is well established and design techniques do exist, usually based on a Floquet mode expansion over a single periodic cell [17,[24][25][26][27], a frequency selective radome exploits a finite, curved, FSS. The study of curved and finite FSS, especially for radomes, is matter of active research since the influence of the radome over the antenna characteristics is stronger than in the homogeneous radome case.…”

Section: Introductionmentioning

confidence: 99%

A Physical Optics Approach to the Analysis of Large Frequency Selective Radomes

D'Elia¹,

Pelosi²,

Pichot³

et al. 2013

PIER

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Abstract-State-of-the-art radomes exploit frequency selective media so as to be transparent for the frequencies of the antenna protected by them and opaque to other frequencies. This feature helps in reducing the radar cross section of the antenna and in protecting it from interference. The study of a frequency selective radome is a daunting task, since the radome is usually large in terms of wavelengths, hence full wave analyses are prohibitive. In this paper an approximate technique, based on the physical optics concept, is proposed to attain an estimation of the behavior of a radome shielded antenna in a short time with a commonly available computer. Results are validated against a full wave technique over a relatively small radome.

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“…The FSS structure has a phenomenon with high impedance surface that reflects the plane wave in-phase and suppresses surface wave thus improving the radiation efficiency, bandwidth, and gain, and reducing the side and back lobe levels in its radiation pattern. For more than four decades the FSS has applications in the areas of filter [8][9][10][11][12][13], reflectors, absorbers [14][15][16], polarizers [17], planar metamaterials [18], and artificial magnetic conductors [19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Bandwidth Enhancement of a U-Slot Patch Antenna Using Embedded HIS Structure

Agrawal¹,

Sharma²,

Singhal³

2012

Advanced Computational Techniques in Electromagnetics

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This paper proposes a new generation of antenna that applies metamaterial as a base construction. With the use of dual band high impedance surface (HIS) structures, the bandwidth, return loss, and gain of U-slot patch antenna is improved at resonant frequencies 2.24 GHz and 5.8 GHz.The proposed new modified U-slot antenna has dual band impedance bandwidth from about 2.1886 to 2.27 GHz and 5.6149 to 7.2259 GHz. From the simulation result it was found that the upper frequency band of the proposed antenna lies in the band of 5.725∼5.825 GHz regulated by IEEE 802.11a (upper band) and can be used for bluetooth and WLAN applications. We perform this analysis on structures which composed of rectangular lattice patches periodic arrangements. All the dimensions and shapes of the unit cell geometry are optimized in order to get a broad bandwidth and high return loss. The lattice structure comprises of an array of 7×5 rectangular patches embedded in the substrate.

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Capacitive Circuit Method for Fast and Efficient Design of Wideband Radar Absorbers

Cited by 201 publications

References 12 publications

Nonmagnetic Ultrawideband Absorber With Optimal Thickness

Nonmagnetic Ultrawideband Absorber With Optimal Thickness

A Physical Optics Approach to the Analysis of Large Frequency Selective Radomes

Bandwidth Enhancement of a U-Slot Patch Antenna Using Embedded HIS Structure

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