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High Gain Tapered Slot Antenna

 
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2011 IEEE International Symposium on Antennas and Propagation (APSURSI)>626 - 629

Low side lobe tapered slot antenna with high gain using gradient refractive index metamaterial for ultra wideband application R. Vakula2 Electronics and Communication Engineering, National Institute of Technology, Warangal 506004, India.corresponding author, E-mail: ieee.rahul5488@gmail.com Abstract. Abstract—An Ultrawideband (UWB) high gain compact Vivaldi antenna with end fire radiation patterns is presented for radar and microwave imaging applications. The antenna is operating for 2.9GHz to more than 11GHz with -10dB impedance bandwidth and is designed on. Low side lobe tapered slot antenna with high gain using gradient refractive index metamaterial for ultra wideband application R. Vakula2 Electronics and Communication Engineering, National Institute of Technology, Warangal 506004, India.corresponding author, E-mail: ieee.rahul5488@gmail.com Abstract.

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Abstract

A tapered-slot antenna (TSA) with microstrip-to-slotline transition is demonstrated for millimeter-wave wireless communications. Two antennas with different aperture widths and lengths are fabricated on a Teflon substrate (εr = 2.2, t = 10 mils), and result in a measured S11 < −8 dB with a gain of 11 dB and 7 dB at 55–63 GHz for an aperture of 3.5 mm and 1 mm, respectively. To validate its performance inside portable mm-wave systems, two metal shielding planes are placed above and below the antennas. The results show that the TSAs maintain good impedance matching and gain with a metal plane height of 1–3 mm, depending on the aperture. A four-element TSA array is also demonstrated for switched-beam systems.

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book ISSN : 1522-3965
book e-ISSN : 1947-1491
book ISBN : 978-1-4244-9562-7
book e-ISBN : 978-1-4244-9563-4 , 978-1-4244-9561-0
DOI 10.1109/APS.2011.5996789

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High Gain Tapered Slot Antenna Combo

Chiou, Yi-Chyun

  • Department of Electrical and Computer Engineering, University of California San Diego, La Jolla, USA

Alhalabi, Ramadan A.

  • Department of Electrical and Computer Engineering, University of California San Diego, La Jolla, USA

Rebeiz, Gabriel M.

  • Department of Electrical and Computer Engineering, University of California San Diego, La Jolla, USA

Keywords

Antenna measurementsAntenna radiation patternsGainMetalsMicrostripSlot antennaswidebandendfire antennaFermi-dirac distributionmicrostrip-to-slotline transitionmillimeter-wave communicationstapered-slot antenna

Antenna measurementsAntenna radiation patternsGainMetalsMicrostripSlot antennaswidebandendfire antennaFermi-dirac distributionmicrostrip-to-slotline transitionmillimeter-wave communicationstapered-slot antenna

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Abstract

A 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 non-resonant 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, whose effective refractive index is lower than that of the substrate on which the antenna is printed. Therefore, the proposed metamaterial is act as a regular lens in beam focusing. 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.

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Singha, R., & Vakula, D. (2017). Low Side Lobe Tapered Slot Antenna with High Gain Using Gradient Refractive Index Metamaterial for Ultra Wideband Application. Advanced Electromagnetics, 6(4), 63-69. https://doi.org/10.7716/aem.v6i4.575
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References


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