Mm-wave rectangular slot loop antenna array for broad spatial coverage

2010 ◽  
Author(s):  
Helen K Pan ◽  
Bryce D Horine ◽  
Kranti K Tantwai
Keyword(s):  
Antenna Array ◽  
Loop Antenna ◽  
Rectangular Slot ◽  
Spatial Coverage

Designing Rectangular Slot Loop Antenna for WLAN Application

2005 ◽  
Author(s):  
N. Anantrasirichai ◽  
S Chanoodhorm ◽  
J. Nakasuwan ◽  
P. Rakluea ◽  
T. Wakabayashi
Keyword(s):  
Loop Antenna ◽  
Rectangular Slot

scholarly journals Reconfigurable 2×1 CPW-Fed Rectangular Slot Antenna Array (RSAA) Based on Graphene for Wireless Communications

2021 ◽  
Vol 36 (6) ◽  
pp. 788-795
Author(s):  
Dalia Elsheakh ◽  
Osama Dardeer
Keyword(s):  
Wireless Communications ◽  
Antenna Array ◽  
Coplanar Waveguide ◽  
Ultra Wideband ◽  
Slot Antenna ◽  
Impedance Bandwidth ◽  
Average Gain ◽  
Rectangular Slot ◽  
High Data ◽  
Peak Gain

This article presents a 2×1 CPW ultra wideband rectangular slot antenna array (UWB-RSAA) with a modified circular slot shape to support a high data rate for wireless communications applications. The proposed antenna array dimensions are 0.7λ×0.8λo×0.064λo at the resonant frequency 1.8 GHz. It is fabricated on Rogers RO4003 substrate and fed by using a coplanar waveguide (CPW). A graphene layer is added on one side of the substrate to realize frequency reconfigurability and improve the array gain. The proposed array acquires -10 dB impedance bandwidth of the RSAA that extends from 1.7 GHz to 2.6 GHz, from 3.2 to 3.8 GHz, and from 5.2 GHz to 7 GHz. The proposed array achieved a realized peak gain of 7.5 dBi at 6.5 GHz at 0 Volt bias with an average gain of 4.5 dBi over the operating band. When the graphene bias is increased to 20 Volt, the antenna bandwidth extends from 1 GHz to 4 GHz and from 5 to 7 GHz with a peak gain of 14 dBi at 3.5 GHz and an average gain of 7.5 dBi. The linearly polarized operation of the proposed array over the operating bands makes it suitable for short-range wireless communications .

scholarly journals Mutual Coupling Reduction in Patch Antenna Array Based on EBG Structure for MIMO Applications

2019 ◽  
Vol 63 (4) ◽  
pp. 332-342 ◽  
Author(s):  
Yahiea Alnaiemy ◽  
Taha A. Elwi ◽  
Lajos Nagy
Keyword(s):  
Resonant Frequency ◽  
Antenna Array ◽  
Mutual Coupling ◽  
Multiple Input Multiple Output ◽  
Microstrip Antennas ◽  
Separation Distance ◽  
Rectangular Slot ◽  
Antenna Performance ◽  
Before And After ◽  
Input Multiple Output

This paper presents a printed rectangular slot microstrip antenna array of two elements based on an Electromagnetic Band Gap (EBG) structure. The proposed EBG structure is invented to improve the isolation between the radiating elements for multiple-input multiple-output (MIMO) application. Single and two slotted rectangular microstrip antennas are designed on an FR-4 substrate with a dielectric constant (εr) of 4.3 and loss tangent (tanδ) of 0.025 with thickness of 1.6 mm. The proposed EBG structure is designed as one planar row of 24 slots. The proposed array performance is tested numerically using Computer Simulation Technology Microwave Studio (CSTMW) of Finite Integration Technique (FIT) formulations. The antenna performance in terms of reflection coefficient (S11), isolation coefficient (S21), radiation patterns, boresight gain and Envelope Correlation Coefficient (ECC) are investigated before and after introducing the EBG structure to identify the significant enhancements. The proposed EBG structure is located between the radiating antenna elements to reduce the mutual coupling of the proposed antenna array. The edge to edge separation distance of the proposed antennas is λ0/16, where the λ0 is the free space wavelength at 2.45 GHz. The simulated results show a significant isolation enhancement from –6 dB to –29 dB at the first resonant frequency 2.45 GHz and from –10 dB to –25 dB at the second resonant frequency 5.8 GHz after introducing the EBG structure to the antenna array.

Internal Reconfigurable Dipole–Loop Antenna Array for High Reception Rate of Wideband UHD-TV Applications

2019 ◽  
Vol 14 (6) ◽  
pp. 2427-2436
Author(s):  
Thai Van Trinh ◽  
Byungje Lee ◽  
Taejoon Park ◽  
Chang Won Jung
Keyword(s):  
Antenna Array ◽  
Loop Antenna

Coupling of fast waves launched into the JFT-2M tokamak by a phased four-loop antenna array

1990 ◽  
Vol 30 (2) ◽  
pp. 297-305 ◽  
Author(s):  
Y. Uesugi ◽  
T. Yamamoto ◽  
H. Kawashima ◽  
K. Hoshino ◽  
H. Aikawa ◽  
...  
Keyword(s):  
Antenna Array ◽  
Loop Antenna ◽  
Fast Waves

scholarly journals A Sub-6 GHz MIMO Antenna Array for 5G Wireless Terminals

Electronics ◽  
2021 ◽  
Vol 10 (24) ◽  
pp. 3062
Author(s):  
Jalal Khan ◽  
Sadiq Ullah ◽  
Farooq A. Tahir ◽  
Faisel Tubbal ◽  
Raad Raad
Keyword(s):  
Antenna Array ◽  
Antenna Element ◽  
Total Efficiency ◽  
Rectangular Slot ◽  
Mimo Antenna ◽  
Array Configuration ◽  
Standard Value ◽  
Operating Bandwidth ◽  
Element Array ◽  
Sar Analysis

This paper presents a novel antenna with its array and MIMO configuration for the 5G sub-6 GHz applications. The proposed antenna element operates at the central frequency of 5.57 GHz dedicated for Sub-6 GHz 5G communication applications. The antenna element holds a circular-shaped radiating portion with an inner-circular slot, plus a rectangular slot at its right edge to make the proposed design resonate at the desired frequency band. The RT5880 substrate is used with a thickness of 0.787 mm, and the low-loss tangent of 0.0009. To achieve a desired gain of 12 dB, a four-element array configuration is adopted, which improved a bore side gain to 12.4 dB from 6.66 dB. Then, the two-port configuration is adopted such that the isolation achieved between them is more than −30 dB. The total efficiency of the proposed antenna array is observed to be more than 80% within the operating bandwidth. Moreover, the Specific Absorption Rate (SAR) analysis is also presented for the proposed MIMO configuration, obeying the standard value (i.e., <2 W/kg for any 10 g of tissue). The measured results are in good agreement with the simulated results. All the simulations of the proposed design are performed in the CST MWS software.

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