scholarly journals Wideband Dual-Element Antenna Array for MIMO Mobile Phone Applications

2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
Yuanqiang Wang ◽  
Jie Yang ◽  
Shangfu Hao ◽  
Xiao Zhang
Keyword(s):  
Mobile Phone ◽  
Antenna Array ◽  
Correlation Coefficient ◽  
Impedance Matching ◽  
Ground Plane ◽  
Ergodic Capacity ◽  
Planar Antenna ◽  
Antenna Size ◽  
Mobile Phone Applications ◽  
Planar Antenna Array

A printed dual-element antenna array for LTE MIMO mobile phone applications is presented in this paper. The two array elements are symmetrically placed with the same dimensions, and each of the them consists of a novel driven strip and a wandering shorting strip. The driven strip is a whole loop, which improves the impedance matching for the upper band. Therefore, the bandwidth coverage is expanded and the antenna size is minimized at the same time. In addition, thanks to the protruded ground on the ground plane, the antenna isolation between the two array elements is significantly enhanced. The proposed planar antenna array successfully covers the seven operating bands of GSM850/900/1800/1900/UMTS2100/LTE2300/2500, and the isolation is more than 10 dB. The prototype was fabricated and tested, withSparameters, efficiency, radiation patterns, envelop correlation coefficient (ECC), and ergodic capacity presented. From the measured results, it is indicated that the antenna array has excellent and reliable performances when it is applied in MIMO applications.

scholarly journals A Wideband Antenna with Circular and Rectangular Shaped Slots for Mobile Phone Applications

2016 ◽  
Vol 2016 ◽  
pp. 1-9 ◽  
Author(s):  
Wei-Hua Zong ◽  
Xiao-Mei Yang ◽  
Xia Xiao ◽  
Shan-Dong Li ◽  
Xiang-Yang Wei ◽  
...  
Keyword(s):  
Transmission Line ◽  
Mobile Phone ◽  
Impedance Matching ◽  
Ground Plane ◽  
Slot Antenna ◽  
Microstrip Transmission Line ◽  
Rectangular Shape ◽  
Antenna Size ◽  
Wideband Antenna ◽  
Mobile Phone Applications

A wideband slot antenna for mobile phone applications is proposed. The antenna has two slots with open ends etched on the opposite edges of the ground plane. The main slot, of total length of 59 mm, is composed of a rectangle connected to a circle having radius of 5 mm. Another slot, having a rectangular shape with width of 2.8 mm and length of 26 mm, is employed to enhance the antenna bandwidth. The slots are fed by means of a rectangular monopole connected to a circular patch joined to a bent 50 Ω microstrip transmission line forming two right angles. To obtain a wideband impedance matching, the upper edge of the monopole and a part of the feeding line evolve along the top edge of the two slots. To reduce the antenna size, the upper part of the board above the slot (just 3 mm from the slot) is folded vertically to the ground plane. The measured bandwidth of the antenna is 0.698–1.10 GHz and 1.64–2.83 GHz covering LTE700/2300/2500, GSM850/900/1800/1900, and UMTS bands.

scholarly journals Closely Mounted Compact Wideband Diversity Antenna for Mobile Phone Applications

2012 ◽  
Vol 2012 ◽  
pp. 1-6 ◽  
Author(s):  
Bunggil Yu ◽  
Chang Won Jung ◽  
Haechun Lee ◽  
Myun-Joo Park ◽  
Byeongkwan Kim ◽  
...  
Keyword(s):  
Mobile Phone ◽  
Correlation Coefficient ◽  
Ground Plane ◽  
Parasitic Element ◽  
High Isolation ◽  
Mobile Phone Applications ◽  
Diversity Antenna

Here a compact wideband diversity antenna covering the PCS/UMTS/WiMAX bands with high isolation and low enveloped correlation coefficient (ECC) is proposed. To widen the bandwidth, the proposed antenna uses a structure with a gap-coupled feed and an inductively shorted line that has capacitive compensation between the radiator and the ground plane. Also, a suspended line with a parasitic element is used to enhance the isolation between the two antennas.

scholarly journals Impedance matching of planar antenna array elements for terahertz rectenna.

2021 ◽  
Author(s):  
K.T.C. Vu ◽  
◽  
A.S. Zynenko ◽  
G.M. Kazaryan ◽  
V.L. Savvin ◽  
...  
Keyword(s):  
Electromagnetic Radiation ◽  
Antenna Array ◽  
Dielectric Layer ◽  
Impedance Matching ◽  
Planar Antenna ◽  
Terahertz Frequency ◽  
Output Impedance ◽  
Efficient Operation ◽  
Terahertz Band ◽  
Planar Antenna Array

The terahertz frequency band of electromagnetic radiation has many potential practical uses. However it still remains to be underdeveloped because of the difficulties with its generation and detection. Many modern studies suggest using rectennas (rectifying antennas) as a potential efficient terahertz detector. The application of rectennas in the terahertz band is challenging in its own way. In particular an efficient operation of a rectenna device requires applying high values of voltage to the rectifying element. This can be attempted by employing an antenna array. However the terahertz band is the band in which the effects of finite conductance of metals start becoming noticeable. This means that antennas in the array cannot be spaced too far away from each other. For a terahertz antenna one of the most popular kinds of structure is a planar antenna, placed on top of a dielectric layer with a metal reflector beneath it. Placing connecting wires in the same plane as the antenna array can minimize the length of the said wires. But it also leads to the structure becoming too complex to compute as the number of the antennas in the array increase. Placing the connections in a different plane, e.g. behind the reflector, can eliminate the influence of these connections on the antenna array characteristics. This study shows that this method also allows adding antennas to the array in a unified manner regardless of their amount. It is worth noting that using this way it is also possible to achieve a predictable behavior of the output impedance of the antenna array.

High Gain Planar Antenna Array for Ka Band SAR Applications

2018 ◽  
Author(s):  
Sheng Ye ◽  
Junyi Hu ◽  
Liang Li ◽  
Yanbing Ma ◽  
Kun Qin
Keyword(s):  
Antenna Array ◽  
High Gain ◽  
Planar Antenna ◽  
Ka Band ◽  
Planar Antenna Array

scholarly journals A NOVEL OF RECONFIGURABLE PLANAR ANTENNA ARRAY (RPAA) WITH BEAM STEERING CONTROL

2010 ◽  
Vol 20 ◽  
pp. 125-146 ◽  
Author(s):  
Mohd Tarmizi Ali ◽  
Mohd Nor Md Tan ◽  
Tharek bin Abd Rahman ◽  
Muhammad Ramlee Bin Kamarudin ◽  
Mohd Faizal Jamlos ◽  
...  
Keyword(s):  
Antenna Array ◽  
Beam Steering ◽  
Planar Antenna ◽  
Steering Control ◽  
Planar Antenna Array

Broadband millimeter-wave planar antenna array with a waveguide and microstrip-feed network

2004 ◽  
Vol 42 (4) ◽  
pp. 283-287 ◽  
Author(s):  
Soon-Soo Oh ◽  
John Heo ◽  
Dong-Hyeon Kim ◽  
Jae-Wook Lee ◽  
Myung-Sun Song ◽  
...  
Keyword(s):  
Antenna Array ◽  
Millimeter Wave ◽  
Planar Antenna ◽  
Feed Network ◽  
Microstrip Feed ◽  
Planar Antenna Array
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