scholarly journals Switch-Beam Vivaldi Array Antenna Based On 4x4 Butler Matrix for mmWave

2018 ◽  
Vol 218 ◽  
pp. 03011
Author(s):  
Nurlaila Safitri ◽  
Rina Pudji Astuti ◽  
Bambang Setia Nugroho
Keyword(s):  
Radiation Pattern ◽  
Single Layer ◽  
High Gain ◽  
Array Antenna ◽  
Low Loss ◽  
Butler Matrix ◽  
Directional Radiation ◽  
Phase Setting ◽  
Vivaldi Antenna ◽  
Fixed Beam

It will be diffcult to use either omnidirectional or fixed beam antenna due to the high propagation losses caused by atmospheric absorption at mmWave for 5G mobile communication. Several studies have been conducted recently using butler matrix which is part of switchable antenna with some advantages such as simple, minimal cost, low loss, etc. Previous studies also have designed vivaldi array antenna at 28 GHz which provides a fix beam directional radiation pattern with narrow beam that requires real phase setting. However, there has been no research using vivaldi antenna with butler matrix, whereas it has some advantages such as wide bandwidth, high gain, high directivity, etc. This paper proposed 4x4 butler matrix integrated with vivaldi antenna by using phase shift of 45 . The design is developed on a single layer of Rogers RT5880 with dielectric constant 2.2 and thickness 0.254 mm. Best results of simulation were picked for overall system at 28 GHz, and the results of antenna as follows: the return loss was below -10 dB, the realized antennas gain was 10.2 dB with unidirectional radiation pattern and bandwidth antenna of 6 GHz that covers from 25 GHz to 31 GHz. The butler matrix average phase di erent between output port are -44.106°, 137.38°, -137.66°, 43.95° with phase err°r °f 0.894°, 2.38°, 2.66°, 1.06°. Antenna array that has been given di erent phase by butler matrix is able to shift radiation pattern on the input port successively with range of beam that can be achieved equal to 185o.

scholarly journals Ultrawideband Low-Profile and Miniaturized Spoof Plasmonic Vivaldi Antenna for Base Station

2020 ◽  
Vol 10 (7) ◽  
pp. 2429 ◽  
Author(s):  
Li Hui Dai ◽  
Chong Tan ◽  
Yong Jin Zhou
Keyword(s):  
Radiation Pattern ◽  
Frequency Band ◽  
High Gain ◽  
Base Station ◽  
Ultra Wideband ◽  
Radiation Patterns ◽  
Low Profile ◽  
Simulation Results ◽  
Vivaldi Antenna ◽  
Good Agreement

Stable radiation pattern, high gain, and miniaturization are necessary for the ultra-wideband antennas in the 2G/3G/4G/5G base station applications. Here, an ultrawideband and miniaturized spoof plasmonic antipodal Vivaldi antenna (AVA) is proposed, which is composed of the AVA and the loaded periodic grooves. The designed operating frequency band is from 1.8 GHz to 6 GHz, and the average gain is 7.24 dBi. Furthermore, the measured results show that the radiation patterns of the plasmonic AVA are stable. The measured results are in good agreement with the simulation results.

scholarly journals A low-loss and compact single-layer butler matrix for a 5G base station antenna

PLoS ONE ◽  
2019 ◽  
Vol 14 (12) ◽  
pp. e0226499
Author(s):  
Intan Izafina Idrus ◽  
Tarik Abdul Latef ◽  
Narendra Kumar Aridas ◽  
Mohamad Sofian Abu Talip ◽  
Yoshihide Yamada ◽  
...  
Keyword(s):  
Single Layer ◽  
Base Station ◽  
Low Loss ◽  
Butler Matrix

scholarly journals The the design of the microstrip array antenna with the rosette patch for WLAN 2.4 GHz and 5.2 GHz frequencies

2020 ◽  
Vol 30 (2) ◽  
Author(s):  
Mohammad Hamdani
Keyword(s):  
Microstrip Antenna ◽  
Return Loss ◽  
Single Layer ◽  
Array Antenna ◽  
Wifi Networks ◽  
Directional Radiation ◽  
Ansoft Hfss ◽  
Measurement Results ◽  
Microstrip Array ◽  
Microstrip Array Antenna

This research discusses the design of the microstrip array antenna with the rosette patch model that works on WLAN 2.4 GHz and 5.2 GHz frequencies which are used for WIFI networks. This microstrip antenna is made using a feedline feed or direct feed with a directional radiation pattern. The initial design used Ansoft HFSS v.13. Software, then fabricated the Microstrip Antenna using a PCB with a single layer FR4 type, and consisted of a patch, substrate, and groundplane. This antenna has dimensions of 94 mm in length and 63.3 mm in width. The measurement results in Laboratorium obtained VSWR 1.6, return loss -12.817, and 31.357 impedance, at a frequency of 2.4 GHz. While at a frequency of 5.2 GHz the VSWR value is 1.292, return loss is -18,210, and impedance is 46.417.  

scholarly journals Novel Design of High-Gain Planar Dipole-Array Antenna for RFID 2.45 GHz

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Danpeng Xie ◽  
Xueguan Liu ◽  
Huiping Guo ◽  
Xinmi Yang
Keyword(s):  
Radiation Pattern ◽  
High Gain ◽  
Base Station ◽  
Array Antenna ◽  
Phase Retardation ◽  
Parallel Lines ◽  
Novel Design ◽  
Radiation Direction ◽  
Peak Gain

This paper presents a novel high-gain planar dipole-array antenna for 2.45 GHz which consists of four planar dipole elements placed in two parallel lines. Phase retardation of each element is set by feeding network to form controllable radiation direction. The radiation pattern of the array is discussed according to Arrays Theorem. The measured −10 dB band is from 2.3 GHz to 2.57 GHz, and peak gain in this band is 7.5 dBi. The gain can even reach 10.5 dBi after installing additional ground. The proposed antenna has advantages of high gain, controllable direction, and planarity which are suitable for 2.45 GHz RFID base station.

A high gain pattern stabilized array antenna fed by modified Butler matrix for 5G applications

2020 ◽  
Vol 122 ◽  
pp. 153237
Author(s):  
Ghader Sharifi ◽  
Yashar Zehforoosh ◽  
Tohid Sedghi ◽  
Manouchehr Takrimi
Keyword(s):  
High Gain ◽  
Array Antenna ◽  
Butler Matrix

scholarly journals Design of a Single-Layer ±45° Dual-Polarized Directional Array Antenna for Millimeter Wave Applications

Sensors ◽  
2021 ◽  
Vol 21 (13) ◽  
pp. 4326
Author(s):  
Qinyi Lv ◽  
Yu-Hang Yang ◽  
Shi-Gang Zhou ◽  
Chan Shao ◽  
Deyun Zhou ◽  
...  
Keyword(s):  
Millimeter Wave ◽  
Simple Structure ◽  
Single Layer ◽  
Array Antenna ◽  
Cross Polarization ◽  
Circularly Polarized ◽  
Directional Radiation ◽  
Linearly Polarized ◽  
Dual Polarized ◽  
Polarization Level

A single-layer ±45° dual-polarized directional array antenna for millimeter wave (mm-wave) applications is designed in this communication. Based on the theory of orthogonal circularly polarized (CP) wave multiplexing, two ports of a series-fed dual CP array are fed with equal amplitudes, and the array can radiate a linearly polarized wave with ±45° polarization orientations through the adjustment of the feeding phase difference. As the two ports of the series-fed array are simultaneously excited, the antenna can achieve directional radiation. In addition, the cross-polarization level of the array can be effectively suppressed by placing two series-fed arrays side by side. A prototype of the designed array antenna operating at 30 GHz is fabricated and measured; the working bandwidth of the proposed antenna is approximately 3.5%. Owing to its simple structure and directional radiation, the proposed antenna array is a competitive candidate for mm-wave applications.

scholarly journals Directional cloverleaf antenna for unmanned aerial vehicle (UAV) application

2019 ◽  
Vol 14 (2) ◽  
pp. 773 ◽  
Author(s):  
M.S. Safaron ◽  
H.A. Majid ◽  
B.A.F. Esmail ◽  
A.S.Ab. Ghafar ◽  
F.A. Safarudin ◽  
...  
Keyword(s):  
Radiation Pattern ◽  
Unmanned Aerial Vehicle ◽  
High Gain ◽  
Radiation Patterns ◽  
Average Gain ◽  
Directional Radiation ◽  
Aerial Vehicle

3-blade and 4-blade cloverleaf antennas operating at 2.45 GHz have been proposed. In order to achieve directional radiation pattern and high gain, reflector is incorporated to the proposed antennas. The proposed antennas have an average gain of 2.37 dBi while the proposed antennas with reflector have an average gain of 6.38 dBi. The dimension of the proposed antenna is compact enough to be mounted on an unmanned aerial vehicle (UAV). Simulated and measured results are used to demonstrate the performance of the antenna. The simulated and measured return losses, together with the simulated radiation patterns, are presented and compared.

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