scholarly journals A PENTA-BAND REJECT INSIDE CUT KOCH FRACTAL HEXAGONAL MONOPOLE UWB MIMO ANTENNA FOR PORTABLE DEVICES

2018 ◽  
Vol 82 ◽  
pp. 225-235 ◽  
Author(s):  
Gnanaharan Irene ◽  
Anbazhagan Rajesh
Keyword(s):  
Portable Devices ◽  
Mimo Antenna ◽  
Koch Fractal

A simple and effective broadband decoupling structure for UWB-MIMO antenna

2021 ◽  
pp. 1-6
Author(s):  
Huiqing Zhai ◽  
Kunming Zhang ◽  
Yu Huo ◽  
Chaozong Guo
Keyword(s):  
Common Ground ◽  
Impedance Matching ◽  
Antenna Element ◽  
Portable Devices ◽  
Excellent Performance ◽  
Mimo Antenna ◽  
Measurement Results ◽  
New Type ◽  
Better Than ◽  
Microstrip Feed

Abstract A new type of closed square ring decoupling structure is proposed in this letter, which can effectively reduce the coupling of antennas. The designed antenna is composed of two elliptical monopoles and a common ground loaded with a broadband parasitic decoupling structure. Considering the impedance matching, each antenna element is changed from the original rectangular microstrip feed to a tapered microstrip feed and etched a circular slot on the elliptical monopole patch. By comparison with the original antenna without any decoupling structure, through loading the broadband decoupling structure on the ground, the antenna isolation is improved by 10 dB in most frequency bands. Comparing simulation and measurement results, the antenna achieves better than 25 dB isolation over the whole operating band (3.3–12 GHz). By manufacturing and testing the antenna designed in this article, the excellent performance parameters obtained also prove that the antenna can be used in portable devices.

scholarly journals Design of inside cut von koch fractal UWB MIMO antenna

2017 ◽  
Vol 263 ◽  
pp. 052043 ◽  
Author(s):  
V Tharani ◽  
N Shanmuga Priya ◽  
A Rajesh
Keyword(s):  
Mimo Antenna ◽  
Koch Fractal

Multiband Printed Slot Meander Patch Antenna for MIMO Implementation in 4G Handheld Devices

2013 ◽  
Vol 64 (3) ◽  
Author(s):  
Nassrin Ibrahim Mohamed ◽  
Tharek Abd. Rahman ◽  
Mursyidul Idzam Sabran
Keyword(s):  
Multiple Input Multiple Output ◽  
Antenna System ◽  
Handheld Devices ◽  
Portable Devices ◽  
Patch Antennas ◽  
Mimo Antenna ◽  
Low Profile ◽  
Proposed Model ◽  
Multiple Input ◽  
Input Multiple Output

This paper presents a Low-profile slot meander patch antennas. The antenna is a multiple communication bands for handheld devices and implements multiple-input–multiple-output (MIMO) technique. The proposed model covers LTE band-11 1.5 GHz Lower (1427.9 - 1452.9, 1475.9 - 1500.9), LTE band-2 PCS 1900 (1930 -1990, 1850 -1910), LTE band-7 2.6 GHz (2620-2690, 2500- 2570), and LTE band-22 3.5 GHz (3510-3590, 3410-3490) with dB matching criterion (VSWR 3:1). An isolation less than -15 dB has been obtained between two typical slot meander patch antennas. The isolation is achieved as a result of using CPW feeding mechanism and inserted CLL network isolator. This dual-feed (2-elements) planar antenna is fabricated and measured. The result of this small size structured MIMO antenna system shows a good radiation characteristics and small mutual coupling which is promising for MIMO applications in compact portable devices.

Compact MIMO Antenna for Portable Devices in UWB Applications

2013 ◽  
Vol 61 (8) ◽  
pp. 4257-4264 ◽  
Author(s):  
Li Liu ◽  
S. W. Cheung ◽  
T. I. Yuk
Keyword(s):  
Portable Devices ◽  
Mimo Antenna ◽  
Uwb Applications
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