High Gain Tapered Slot Antenna

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 cost FR4 substrate of thickness 0.8mm. Current ultra-wide bandwidth (UWB) and high-gain antennas include mainly log-periodic antenna, traditional transverse electromagnetic (TEM) horn antenna, spiral antenna, bow-tie antenna, tapered slot antenna, and microstrip patch antenna. However, the traditional Yagi antenna and microstrip patch antenna have narrow bandwidth. 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 (ε r = 2.2, t = 10 mils), and result in a measured S 11 < −8 dB with a gain of 11 dB and 7 dB at 55–63 GHz for an. A broadband high gain Tapered slot antenna array for under water communication is presented in this paper. The procedure to design the unit element antenna is followed by applying a linear tapered.

1. High Gain Tapered Slot Antenna Receiver
2. High Gain Tapered Slot Antenna Booster
3. Tapered Slot Antenna Design

Main Article Content

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.

Article Details

Article Details

High Gain Tapered Slot Antenna Receiver

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High Gain Tapered Slot Antenna Booster

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