Planar Octagonal-Shaped UWB Antenna With Reduced Radar Cross Section

Dikmen, Cengizhan M.; Çimen, Sibel; Çakır, Gonca

doi:10.1109/tap.2014.2313855

Cited by 129 publications

(68 citation statements)

References 29 publications

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“…Planar monopole antennas have been found to be excellent candidates to operate in UWB wireless systems, since they can be integrated with other components on the same printed circuit board (PCB) and present simple structure, easy fabrication, wideband characteristics, and omnidirectional radiation patterns. Consequently, a number of planar monopole antennas with different geometries have been experimentally characterized [2][3][4][5][6]. In practice, the ultra-wide bandwidth of the UWB systems will cause interference with other narrow band systems such as the WLAN bands (5.15-5.35 GHz and 5.725-5.825 GHz).…”

Section: Introductionmentioning

confidence: 99%

Uwb Heart-Shaped Planar Monopole Antenna With a Reconfigurable Notched Band

Hua¹,

Lu²,

Liu³

2017

PIER Letters

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Abstract-This paper presents a heart-shaped planar monopole antenna for ultra-wideband (UWB) applications. To increase the impedance bandwidth of the antenna and achieve UWB coverage, we use a heart-shaped radiating patch fed by a microstrip line and an elliptical curved ground plane. Based on this structure, by etching an annular slot loaded with a capacitor in the heart-shaped radiating patch, a planar band-notched UWB antenna can also be obtained. Specifically, to demonstrate the potential application of the proposed structure, a UWB antenna design with a reconfigurable notched band is presented by using a varactor to replace the capacitor. Commercial software ANSYS HFSS is used to analyze and design this antenna. Measured results of the fabricated antenna show good agreement with simulated ones.

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Section: Introductionmentioning

confidence: 99%

Uwb Heart-Shaped Planar Monopole Antenna With a Reconfigurable Notched Band

Hua¹,

Lu²,

Liu³

2017

PIER Letters

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“…The shaping of the antenna surfaces and loaded radar absorbing materials (RAMs) are the two methods used commonly among them. By cutting slots in the proper place where the current amplitude is small, the former approach can deflect the scattered energy away from the incident wave direction while keeping the good radiation performance of antennas, whereas the latter usually converts the incoming energy into heat instead of backscatter [4][5][6][7]. Metamaterials provide another promising way to enhance the radiation and scattering performances of antennas [8,9].…”

Section: Introductionmentioning

confidence: 99%

RCS Reduction Using a Miniaturized Uni-Planar Electromagnetic Band Gap Structure for Circularly Polarized Microstrip Antenna Array

Zhang¹,

Dong²

2017

PIER Letters

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Abstract-In this paper, a new method for radar cross section (RCS) reduction of circularly polarized (CP) microstrip antenna array with small element spacing is proposed. By employing the element rotation technique and loading EBG structures, the in-band and out-of-band RCSs are reduced simultaneously despite the extreme small space between array elements. The simulated results show that the proposed antenna has an average RCS reduction over 10 dB in the X-band for x-polarized and y-polarized incident waves impinging from normal direction compared to the original CP microstrip antenna array, indicating a fractional bandwidth of 40%. The maximum RCS reduction is over 25 dB. Meanwhile, the radiation performance of the proposed antenna array is kept.

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“…But RCS reduction in the ultra-wideband range is difficult. So an Octagonal-shaped antenna with reduced Radar Cross Section (RCS) is reported to cover extended UWB (2.5-18.0 GHz) with 151% fractional bandwidth [9]. However, promising mechanical and thermal properties of thermoplastic acrylonitrile butadiene styrene polycarbonate (ABC-PC) substrate has been reported for integration in molded interconnects devices technology [10].…”

Section: Introductionmentioning

confidence: 99%