scholarly journals A Novel Chebyshev Series Fed Linear Array with High Gain and Low Sidelobe Level for WLAN Outdoor Systems

2018 ◽  
Vol 8 (1-2) ◽  
Author(s):  
The Toan Tang ◽  
Minh Tran Nguyen ◽  
Vu Bang Giang Truong
Keyword(s):  
Linear Array ◽  
Measurement Data ◽  
High Gain ◽  
Single Element ◽  
Sidelobe Level ◽  
Antenna Theory ◽  
Yagi Antenna ◽  
Low Sidelobe ◽  
Structure Simulation ◽  
Microstrip Array Antenna

This paper proposes a novel high gain and low sidelobe level (SLL) linear microstrip array antenna for outdoor WLAN applications. The antenna consists of two main parts, which are a linear array and a reflector. The linear array comprises of 10 elements; those have been designed on Rogers RT/Duroid 5870tm with the dimensions of 422×100×10.15 mm3. To gain low SLLs, a series fed network was designed to have the output signals being proportional to the Chebyshev distributions (with preset SLL of -30 dB). Furthermore, Yagi antenna theory has been applied by adding directors above every single element to increase the directivity of the single element. The reflector has been constructed at the back of the proposed structure. Simulation results show that the array can provide high gain of 17.5 dBi and a low SLL of -26 dB. A prototype has been fabricated and measured. Good agreements between simulation and measurement data have been obtained.

scholarly journals High gain 5G MIMO antenna for mobile base station

2019 ◽  
Vol 9 (1) ◽  
pp. 468 ◽  
Author(s):  
Yusnita Rahayu ◽  
Indah Permata Sari ◽  
Dara Incam Ramadhan ◽  
Razali Ngah
Keyword(s):  
Linear Array ◽  
Multiple Input Multiple Output ◽  
High Gain ◽  
Base Station ◽  
Impedance Bandwidth ◽  
Single Element ◽  
Mimo Antenna ◽  
Input Multiple Output ◽  
Mobile Base Station ◽  
Mobile Base

This article presented a millimeter wave antenna which operated at 38 GHz for 5G mobile base station. The MIMO (Multiple Input Multiple Output) antenna consisted of 1x10 linear array configurations. The proposed antenna’s size was 88 x 98 mm^2  and printed on 1.575 mm-thick Rogers Duroid 5880 subsrate with dielectric constant of ε_r= 2.2 and loss tangent (tanδ) of 0.0009. The antenna array covered along the azimuth plane to provide the coverage to the users in omnidirection. The simulated results showed that the single element antenna had the reflection coefficient (S11) of -59 dB, less than -10 dB in the frequency range of 35.5 - 39.6 GHz. More than 4.1 GHz of impedance bandwidth was obtained. The gain of the antenna linear array was 17.8 dBi while the suppression of the side lobes was -2.7 dB.  It showed a high array gain throughout the impedance bandwidth with overall of VSWR were below 1.0646. It designed using CST microwave studio.

High Gain V-Antenna Array for 60 GHz WiGig Network

2019 ◽  
Vol 09 ◽  
Author(s):  
Ribhu Abhusan Panda ◽  
Debasis Mishra
Keyword(s):  
Return Loss ◽  
Surface Current ◽  
High Gain ◽  
Single Element ◽  
60 Ghz ◽  
Antenna Gain ◽  
Surface Current Distribution ◽  
Rectangular Patch ◽  
S Parameter ◽  
Microstrip Array Antenna

: This paper provides an efficient but simple designed V-Shaped microstrip array antenna on a RT duroid substrate of dimension 50 mm× 40 mm × 1.6 mm . By considering the ratio of the length of one leg of the V-element and wavelength of the desired frequency , the angle between two legs of V-Patch has been determined . For a more efficient outcomes , an array design of 4-elements is made and its comparison with single element is done .A simple line feed technique has been used , with feedline width of 3mm .The proposed structure is simulated by using Ansys HFSS software and S-Parameter , antenna gain , directivity, Standing wave ratio and surface current distribution have been determined .Unlike conventional patches, the array contains a separation between two consecutive V-Elements in the shape of a rectangular patch termed as element separation band (ESB ) and it plays an important role in modifying the antenna gain and directivity. This antenna produces a return loss of -39.387 dB at 60.58 GHz frequency to cater the present demand of 60 GHz Wi-Gig and WPAN.

SERIES FEED FAN-BEAM ANTENNA ARRAY WITH A LOW SIDELOBE LEVEL FOR POSITIONING SYSTEM

2020 ◽  
pp. 55-65
Author(s):  
Le Minh Thuy
Keyword(s):  
Antenna Array ◽  
Radiation Pattern ◽  
Amplitude Distribution ◽  
High Gain ◽  
Impedance Bandwidth ◽  
Antenna Element ◽  
Positioning System ◽  
Sidelobe Level ◽  
Single Antenna ◽  
Low Sidelobe

In this paper, a novel antenna array at 5GHz is presented with a low sidelobe level and wide impedance bandwidth for indoor positioning applications . The antenna array has the size of 450 ×57×0.8 mm3 with the high gain of 14.5dBi and the low SLL of -18 dB at 5GHz. The series feed using Unequal Split T-Junction is proposed with the Chebyshev-amplitude distribution to improve SLL. Besides the 1800 phase and amplitude distribution, by deploying driven elements above each single antenna element, the radiation pattern and the gain of the antenna aray are significantly improved.

A low sidelobe level of circularly polarized microstrip array antenna for CP-SAR sensor

2013 ◽  
Vol 27 (15) ◽  
pp. 1931-1941 ◽  
Author(s):  
Mohamed Hussein ◽  
Yohandri ◽  
Josaphat Tetuko Sri Sumantyo ◽  
Ashraf Yahia
Keyword(s):  
Array Antenna ◽  
Sidelobe Level ◽  
Circularly Polarized ◽  
Low Sidelobe ◽  
Microstrip Array ◽  
Microstrip Array Antenna

scholarly journals Linear Array Thinning with Cavity backed U-slot Patch Antenna using Genetic Algorithm

2021 ◽  
Vol 5 (1) ◽  
pp. 9
Author(s):  
Novalia Pertiwi ◽  
Fannush Shofi Akbar ◽  
Eko Setijadi ◽  
Gamantyo Hendrantoro
Keyword(s):  
Genetic Algorithm ◽  
Patch Antenna ◽  
Linear Array ◽  
Dense Array ◽  
Sidelobe Level ◽  
Low Sidelobe ◽  
Genetic Algorithm Method ◽  
Peak Sidelobe Level

In this paper, a thinned linear array with Cavity backed U-slot Patch has been investigated using the Genetic Algorithm to minimize peak sidelobe level and the number of antenna elements. One of the essential steps in the Genetic Algorithm method is a crossover, which uses the Paired Top Ten and Combined Top Five rules applied to the Cavity backed U-slot Patch antenna. The peak sidelobe level value is -18.63 dB with a array filling of 63.33% at the broadside angle using Combined Top Five rules. In Paired Top Ten, the peak sidelobe level value is -19.48 dB with a array filling of 70%. The two methods are still better as compared to a dense array. This study is essential in the development of radar technologies since it needs a low sidelobe level.

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