scholarly journals A Low VSWR and High Efficiency Waveguide Feed Antenna Array

2018 ◽  
Vol 2018 ◽  
pp. 1-7 ◽  
Author(s):  
Zhao Xiao-Fang ◽  
Liu Hua-Zhu ◽  
Li Yi ◽  
Zhou Shi-Gang ◽  
Chow-Yen-Desmond Sim
Keyword(s):  
Antenna Array ◽  
High Efficiency ◽  
Satellite Communications ◽  
Radiation Efficiency ◽  
Plane Waveguide ◽  
Antenna Gain ◽  
High Radiation ◽  
Milling Method ◽  
Array Fabrication ◽  
Ku Band

A low VSWR and high efficiency antenna array operating in the Ku band for satellite communications is presented in this paper. To achieve high radiation efficiency and broad enough bandwidth, all-metal radiation elements and full-corporate waveguide feeding network are employed. As the general milling method is used in the multilayer antenna array fabrication, the E-plane waveguide feeding network is adopted here to suppress the wave leakage caused by the imperfect connectivity between adjacent layers. A 4 × 8 elements array prototype was fabricated and tested for verification. The measured results of proposed antenna array show bandwidth of 6.9% (13.9–14.8 GHz) for VSWR < 1.5. Furthermore, antenna gain and efficiency of higher than 22.2 dBi and 80% are also exhibited, respectively.

scholarly journals A Low-Profile Antenna Based on Single-Layer Metasurface for Ku-Band Applications

2020 ◽  
Vol 2020 ◽  
pp. 1-8
Author(s):  
Yadgar I. Abdulkarim ◽  
Halgurd N. Awl ◽  
Fahmi F. Muhammadsharif ◽  
Muharrem Karaaslan ◽  
Rashad H. Mahmud ◽  
...  
Keyword(s):  
Computer Simulation ◽  
Single Layer ◽  
Satellite Communications ◽  
Antenna Gain ◽  
Frequency Range ◽  
Low Profile ◽  
Operating Frequency Range ◽  
Measurement Results ◽  
Good Agreement ◽  
Ku Band

Improvement in the antenna gain is usually achieved at the expense of bandwidth and vice versa. This is where the realization of this enhancement can be made through compromising the antenna profile. In this work, we propose a new design of incorporating periodic metasurface array to enhance the bandwidth and gain while keeping the antenna to a low-profile scheme. The proposed antenna was simulated and fabricated in order to validate the results in the operating frequency range from 10 MHz to 43.5 GHz. Computer simulation technology (CST) microwave studio software was used to design and simulate the proposed antenna, while LPKF prototyping PCB machine was utilized to fabricate the antenna. Results showed that the antenna generated a gain and bandwidth of 14.2 dB and 2.13 GHz, respectively. Following the good agreement between the numerical and measurement results, it is believed that the proposed antenna can be potentially attractive for the application of satellite communications in Ku-band electromagnetic wave.

A High-Gain, High-Efficiency, and Compact Continuous Transverse Stub Antenna Array at Ku Band

2021 ◽  
Author(s):  
Hongjun Chu ◽  
Teni Geer ◽  
Na Wu ◽  
Chen Zhou ◽  
Ming Zhou
Keyword(s):  
Antenna Array ◽  
High Efficiency ◽  
High Gain ◽  
Ku Band

scholarly journals Circularly polarized antenna array based on hybrid couplers for 5G devices

2021 ◽  
Vol 10 (3) ◽  
Author(s):  
Tan Minh Cao ◽  
Thao Hoang Thi Phuong ◽  
Thi Duyen Bui
Keyword(s):  
Antenna Array ◽  
High Efficiency ◽  
3D Structure ◽  
High Gain ◽  
Operating Frequency ◽  
Antenna Gain ◽  
Suitable Candidate ◽  
Circularly Polarized ◽  
Operating Bandwidth ◽  
Peak Gain

This paper depicts a wideband circularly polarized (CP) antenna for 5G devices. The antenna array has a 3D structure including four simple printed dipole elements with directional radiations, high gain, and high efficiency. It achieves a CP by using the sequential rotation (SR) feeding based on 90°-3dB hybrid couplers in the proposed feeding network. The antenna array bandwidth is wide, 26.7%, with an operating frequency band from 3.35 GHz to 4.35 GHz. The antenna achieves a high peak gain of 10.73 dBi and high efficiency of 93.75%. Besides, the antenna gain is stable over the operating bandwidth (BW). At the centre operating frequency of 3.75 GHz, the angle of circular polarization is 51°. The antenna is designed and fabricated on the Rogers 4003 C substrate. The measured S11 is well matching with the simulation results. With the above characteristics, the proposed antenna can be a suitable candidate for 5G devices.

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