A Printed Vivaldi Antenna With Improved Radiation Patterns by Using Two Pairs of Eye-Shaped Slots for Uwb Applications

Ma, Kun; Zhao, Zhiqin; Wu, Jheng-Yu; Ellis, Mubarak Sani; Nie, Zaiping

doi:10.2528/pier14043003

Cited by 28 publications

(25 citation statements)

References 13 publications

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“…The comparison between proposed antenna and published work in terms of size, peak gain increment is listed in Table 2. The proposed antenna has less size compared with references [2], [8] and gain is increased compared with [9]. …”

Section: Resultsmentioning

confidence: 93%

Low Side Lobe Tapered Slot Antenna with High Gain Using Gradient Refractive Index Metamaterial for Ultra Wideband Application

Singha¹,

Vakula²

2017

AEM

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A novel broadband gradient refractive index (GRIN) metamaterial is used to improve the gain of the tapered slot antenna. The proposed metamaterial is capable of reducing the side lobe level of the antenna. The gradient refractive index (GRIN) metamaterial is constructed by using nonresonant parallel-line unit cells with different refractive index. Due to the non-resonant structure, the proposed unit cell exhibits low loss and large frequency bandwidth. The metamaterial, effective refractive index is lower than that of the substrate on which the antenna is printed. The GRIN metamaterial is integrated in front of the antenna which has the capability to manipulate electromagnetic wave accurately. The measurement results indicate that the reflection coefficient of the antenna is below -10 dB over the frequency band from 3 to 11 GHz. The radiation pattern of the antenna shows the beam width becomes narrow and directive with low side lobe level. The peak gain is increased by 2.1 dB at 9.5 GHz. The antenna has shown significant improvement on gain at low frequency.

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Section: Resultsmentioning

confidence: 93%

Low Side Lobe Tapered Slot Antenna with High Gain Using Gradient Refractive Index Metamaterial for Ultra Wideband Application

Singha¹,

Vakula²

2017

AEM

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“…The slots are excited by using a T-junction power divider to generate plane waves in the E-plane at the aperture of the antenna and it is compared with a conventional Vivaldi antenna that uses an exponentially tapered method. Another directional Vivaldi antenna with eye-shaped slots is proposed in [29] to reduce the side lobes and increase the efficiency to approximately 80%. The proposed antenna also has a greater gain which makes it suitable for GPR systems.…”

Section: B Vivaldi Antennamentioning

confidence: 99%

Ultra-Wideband Antenna Design for GPR Applications: A Review

Ali¹,

Abdullah²,

Ismail³

et al. 2017

ijacsa

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Abstract-This paper presents a comparative review study on ultra-wideband (UWB) antenna technology for Ground Penetrating Radar (GPR) applications. The proposed antenna designs for UWB ground penetrating radar include a bow-tie antennas, Vivaldi antennas, horn antennas, planar antennas, tapered slot antennas, dipole antennas, and spiral antennas. Furthermore a comprehensive study in terms of operating frequency range, gain and impedance bandwidth on each antenna is performed in order to select a suitable antenna structure to analyze it for GPR systems. Based on the design comparison, the antenna with a significant gain and enhanced bandwidth has been selected for future perspective to examine the penetration depth and resolution imaging, simultaneously suitable for GPR detection applications. Three different types of antennas are chosen to be more suitable from the final comparison which includes Vivaldi, horn and tapered slot antennas. On further analysis a tapered slot antenna is a promising candidate as it has the ability to address the problems such as penetration depth and resolution imaging in GPR system due to its directional property, high gain and greater bandwidth operation, both in the lower and higher frequency range.

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“…In the past years, some printed microstrip multiband antennas [1][2][3][4][5][6][7][8][9][10][11][12] have been designed. In [2], a compact quad-band microstrip antenna with two rectangular notches on the radiation patch is proposed and analysed for S-band and C-band applications.…”

Section: Introductionmentioning

confidence: 99%

“…Three operating frequency bands for GPS/WiMAX/WLAN are achieved by a pair of L-shaped slots and rectangular slots, and defected ground structure in [11]. And in [12], by using two pairs of eye-shaped slots, the authors reduce the side lobe levels of the radiation pattern of their proposed printed antenna.…”

Section: Introductionmentioning

confidence: 99%

A Compact Low-Profile and Quad-Band Antenna With Three Different Shaped Slots

Xue¹,

Xiao²,

Sun³

et al. 2016

PIER C

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Abstract-A compact quad-band slot antenna is presented in this paper. The proposed antenna consists of ground plane, dielectric material and top radiation patch. Firstly, symmetrical L-shaped slots are inserted in a radiation patch. Then to achieve multiband performances, symmetrical square spiral slots and a snakelike area with two symmetrical arms enclosed by a long slot in the ground plane are adopted. The process of design and parametric studies are illustrated in detail. The final quadband antenna has a small size of 0.22λ g × 0.28λ g = 17 × 22 mm 2 (where λ g is the guide wavelength) and covers the frequency bands from 2.39 to 2.48 GHz for lower WLAN, 3.64-3.73 GHz for downlink and 5.98-6.30 GHz for uplink standard satellite communications, and 6.97-7.18 GHz mainly used by the Indian National Satellite System (INSAT). The measured results of the proposed quad-band antenna are in accordance with simulated analysis and show good performance of return loss characteristics, radiation patterns, bandwidths and gains. Especially, with a very small size, the proposed antenna is suitable to be integrated with a portable device for varieties of wireless communication applications.

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A Printed Vivaldi Antenna With Improved Radiation Patterns by Using Two Pairs of Eye-Shaped Slots for Uwb Applications

Cited by 28 publications

References 13 publications

Low Side Lobe Tapered Slot Antenna with High Gain Using Gradient Refractive Index Metamaterial for Ultra Wideband Application

Low Side Lobe Tapered Slot Antenna with High Gain Using Gradient Refractive Index Metamaterial for Ultra Wideband Application

Ultra-Wideband Antenna Design for GPR Applications: A Review

A Compact Low-Profile and Quad-Band Antenna With Three Different Shaped Slots

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