High-Gain Rectangular-Fins Shaped Balanced Antipodal Vivaldi Antenna Array Extended by Dielectric for wide-band Imaging Application

2019 ◽  
Author(s):  
Faraz Ahmed Shaikh ◽  
Sheroz Khan ◽  
AHM Zahirul Alam ◽  
Syed Faiz Ahmed ◽  
Zeeshan Shahid ◽  
...  
Keyword(s):  
Antenna Array ◽  
Wide Band ◽  
High Gain ◽  
Imaging Application ◽  
Vivaldi Antenna

scholarly journals Wide-Band High-Gain DGS Antenna System for Indoor Robot Positioning

2019 ◽  
Vol 2019 ◽  
pp. 1-10 ◽  
Author(s):  
Lu Bai ◽  
Chenglie Du
Keyword(s):  
Antenna Array ◽  
Mutual Coupling ◽  
Wide Band ◽  
High Gain ◽  
Antenna System ◽  
Fusion Technology ◽  
Positioning Systems ◽  
Signal Fusion ◽  
Wireless Signal ◽  
Robot Positioning

Based on multisource wireless signal fusion technology, the autonomous positioning systems of robots have been widely employed. How to design a compact compostable antenna array for indoor robot positioning is still a problem. In this study, we proposed a compact ultrathin antenna unit that effectively reduces the mutual coupling between any adjacent units, while covering most of the existing communication bands, including 2G/3G/4G/Wi-Fi, which will greatly reduce the size of the positioning antenna array. The proposed antenna system has been employed for positioning purpose with high-gain, wide-frequency band and limited size. It necessarily improves the accuracy of positioning signal from various unknown sources and finally accomplishes its autonomous positioning function.

scholarly journals Improvement on a 2 × 2 Elements High-Gain Circularly Polarized Antenna Array

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
C. Liu ◽  
A. Yan ◽  
C. Yu ◽  
T. Xu
Keyword(s):  
Antenna Array ◽  
Axial Ratio ◽  
High Gain ◽  
Center Frequency ◽  
The Novel ◽  
Orthorhombic Structure ◽  
Commercial Communication ◽  
Vivaldi Antenna ◽  
Serrated Structure ◽  
Vivaldi Antennas

A novel antipodal Vivaldi antenna with tapering serrated structure at the edges is proposed. Compared with traditional Vivaldi antennas without serrated structure, the gain of the designed antenna is significantly improved in the desired frequency band (4.5–7.5 GHz). In addition, a 2 × 2 Vivaldi antenna array with an orthorhombic structure is designed and fabricated to achieve a circular polarization (CP) characteristic. With this configuration, the 3 dB axial ratio bandwidth of the array reaches about 42% with respect to the center frequency of 6 GHz and a high gain is achieved as well. The novel Vivaldi antenna and CP antenna array both have ultrawide band (UWB) and high-gain characteristics, which may be applied to the field of commercial communication, remote sensing, and so forth.

scholarly journals A New Linear Printed Vivaldi Antenna Array with Low Side Lobe Level and High Gain for the Band 3.5 GHz

2020 ◽  
Author(s):  
Luong Xuan Truong ◽  
Truong Vu Bang Giang ◽  
Tran Minh Tuan
Keyword(s):  
Antenna Array ◽  
Simulated Data ◽  
Bat Algorithm ◽  
Side Lobe ◽  
High Gain ◽  
Control Technique ◽  
Side Lobe Level ◽  
Low Sidelobe ◽  
Vivaldi Antenna ◽  
Vivaldi Antennas

This paper proposes a new design of low sidelobe level (SLL) and high gain linear printed Vivaldi antenna array. The array composes of two parts, which are a linear Vivaldi antenna array and a back reflector. The array consists of 10 single Vivaldi antennas and a series-fed network, those are based on Roger RO4003C substrate (ε = 3.55) with the dimension of 140 x 450 x 1.524 mm3. A new Bat algorithm with the amplitude-only control technique has been applied to optimize the output coefficients of the series-fed network for gaining a low SLL. The simulation results indicate that the proposed antenna provides a low SLL of -29.2 dB in E-plane with a high gain of 16.5 dBi at the frequency of 3500 MHz. A prototype of the proposed antenna array has been fabricated. The measured data has a good agreement with the simulated data.

Research on ultra-wide band planar Vivaldi antenna array

2006 ◽  
Vol 48 (10) ◽  
pp. 2117-2120 ◽  
Author(s):  
Feng T. Wu ◽  
Guang F. Zhang ◽  
Xue L. Yuang ◽  
Nai C. Yuang
Keyword(s):  
Antenna Array ◽  
Wide Band ◽  
Ultra Wide Band ◽  
Vivaldi Antenna

Design of wideband high-gain circularly polarized Vivaldi antenna array

2013 ◽  
Vol 25 (3) ◽  
pp. 685-688 ◽  
Author(s):  
许唐红 Xu Tanghong ◽  
张弘 Zhang Hong ◽  
王东 Wang Dong ◽  
朱海涛 Zhu Haitao ◽  
兰敏 Lan Min
Keyword(s):  
Antenna Array ◽  
High Gain ◽  
Circularly Polarized ◽  
Vivaldi Antenna

scholarly journals Gain Enhancement of Double-Slot Vivaldi Antenna using Corrugated Edges and Semicircle Director for Microwave Imaging Application

2021 ◽  
Vol 21 (2) ◽  
pp. 85
Author(s):  
Findi Nur Witriani ◽  
Yahya Syukri Amrullah ◽  
Fajri Darwis ◽  
Taufiqqurrachman Taufiqqurrachman ◽  
Yusuf Nur Wijayanto ◽  
...  
Keyword(s):  
Medical Profession ◽  
High Gain ◽  
Microwave Imaging ◽  
Ultra Wideband ◽  
Slot Antenna ◽  
Gain Enhancement ◽  
Imaging Application ◽  
Vivaldi Antenna ◽  
Compact Design ◽  
Slot Structure

Microwave imaging, such as images for radiological inspection in the medical profession, is one of the applications utilized in ultra-wideband (UWB) frequency ranges. The Vivaldi antenna is one of the most popular antennas for this purpose. The antenna is utilized because of its simple, lightweight, and compact design, as well as its excellent efficiency and gain capabilities. In this work, we present a high-gain Vivaldi antenna for microwave imaging applications. The proposed Vivaldi antenna is designed using a double-slot structure method with the addition of corrugated edges and a semicircle director aimed at improving the gain. The antenna is designed to operate at frequencies ranging from 3.1 to 10.6 GHz. Based on the modeling findings, the suggested antenna attain a bandwidth of 7.5 GHz with operating frequencies from 3.1 GHz to 10.6 GHz for a VSWR of less than two. In comparison to a typical single slot antenna, the suggested antenna provides a substantial boost in gain performance. The increase in gain is proportional to the frequency of operation. The constructed antenna has a lower bandwidth than the simulated one, with operating frequencies of 3.5 GHz – 3.75 GHz and 4.25 – 10.89 GHz, respectively, and useable bandwidths of 250 MHz and 6.64 GHz. All these results suggest that the antenna is suitable for microwave imaging applications.

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