Frequency‐reconfigurable multiple‐input–multiple‐output monopole antenna with wide‐continuous tuning range

2016 ◽  
Vol 10 (12) ◽  
pp. 1322-1331 ◽  
Author(s):  
Yunfei Cao ◽  
Sing Wai Cheung ◽  
Tung Ip Yuk
Keyword(s):  
Tuning Range ◽  
Multiple Input Multiple Output ◽  
Monopole Antenna ◽  
Continuous Tuning ◽  
Multiple Input ◽  
Input Multiple Output

scholarly journals A High Isolation MIMO Antenna without Decoupling Structure for LTE 700 MHz

2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
Yanjie Wu ◽  
Yunliang Long
Keyword(s):  
Impedance Matching ◽  
Multiple Input Multiple Output ◽  
Monopole Antenna ◽  
Antenna Element ◽  
Mimo Antenna ◽  
High Isolation ◽  
Antenna Performance ◽  
Measurement Results ◽  
Multiple Input ◽  
Input Multiple Output

This paper presents a long-term evolution (LTE) 700 MHz band multiple-input-multiple-output (MIMO) antenna, and high isolation between the two symmetrical antenna elements is obtained without introducing extra decoupling structure. Each antenna element is a combination antenna of PIFA and a meander monopole antenna. The end of the PIFA and the meander monopole antenna are, respectively, overlapped with the 50 Ω microstrip feed line, the two overlapping areas produce additional capacitance which can be considered decoupling structures to enhance the isolation for the MIMO antenna, as well as the impedance matching of the antenna elements. The MIMO antenna is etched on FR4 PCB board with dimensions of 71 × 40 × 1.6 mm3; the edge-to-edge separation of the two antenna elements is only nearly 0.037 λat 700 MHz. Both simulation and measurement results are used to confirm the MIMO antenna performance; the operating bandwidth is 698–750 MHz withS11≤−6 dB andS21≤−23 dB.

High Isolation Superwideband Monopole Antenna with Mitigation of Dual Interfering Bands (WiMAX/C and Satellite Communication System in X Band) for Wireless Applications

2019 ◽  
Vol 16 (10) ◽  
pp. 4339-4344
Author(s):  
Manoj Kapil ◽  
Manish Sharma
Keyword(s):  
Satellite Communication ◽  
Multiple Input Multiple Output ◽  
Monopole Antenna ◽  
Wireless Applications ◽  
X Band ◽  
Multiple Input ◽  
Input Multiple Output ◽  
Microwave Substrate ◽  
Uplink Interference ◽  
Directive Gain

In this manuscript, a dual notched superwideband Multiple-Input-Multiple-Output (MIMO) monopole antenna is verified in frequency, time and spatial domain. Antenna occupies space of 18340.787 mm3 and is printed on (Rogers RT Duroid5880) microwave substrate. Proposed antenna is capable of covering bandwidth 2.66 GHz–22.31 GHz with bandwidth ratio > 10:1. Proposed antenna rejects WiMAX/C band (3.28 GHz–4.36 GHz) which is obtained by using L-shaped stub connected with ground and X-band satellite downlink/uplink interference is removed by etching inverted U-shaped slit in microstrip feedline. Also, antenna offers maximum gain of and radiation efficiency of 5.30 dBi and 96.20% respectively in operating band. Proposed antenna also shows good diversity performance in terms of ECC (Envelope Correlation Coefficient), DG (Directive Gain) and TARC (Total Active Reflection Coefficient).

A new design of triple-band WLAN/WiMAX monopole antenna for multiple-input/multiple-output applications

2014 ◽  
Vol 56 (11) ◽  
pp. 2667-2671 ◽  
Author(s):  
Nasser Ojaroudi ◽  
Nuraddin Ghadimi ◽  
Mehdi Mehranpour ◽  
Yasser Ojaroudi ◽  
Sajjad Ojaroudi
Keyword(s):  
Multiple Input Multiple Output ◽  
Monopole Antenna ◽  
Multiple Input ◽  
Input Multiple Output ◽  
Triple Band

Microstrip-Fed Monopole Antenna Planar Array for Multiple-Input–Multiple-Output Applications

2010 ◽  
Vol 30 (3) ◽  
pp. 246-255
Author(s):  
A. R. Mallahzadeh ◽  
S. Es'haghi ◽  
S. Akhlaghi ◽  
A. Alipour
Keyword(s):  
Multiple Input Multiple Output ◽  
Monopole Antenna ◽  
Multiple Input ◽  
Input Multiple Output ◽  
Planar Array

A monopole antenna with butterfly‐like coupling slot for multiple input multiple output applications

2019 ◽  
Vol 61 (10) ◽  
pp. 2329-2335 ◽  
Author(s):  
Jian‐Hua Zhou ◽  
Xian‐Hui He ◽  
Jing Nie ◽  
Bai‐Qiang You ◽  
Wei‐Wen Li ◽  
...  
Keyword(s):  
Multiple Input Multiple Output ◽  
Monopole Antenna ◽  
Multiple Input ◽  
Input Multiple Output

scholarly journals Design of a Compact UWB MIMO Antenna without Decoupling Structure

2018 ◽  
Vol 2018 ◽  
pp. 1-7 ◽  
Author(s):  
Yanjie Wu ◽  
Kang Ding ◽  
Bing Zhang ◽  
Jianfeng Li ◽  
Duolong Wu ◽  
...  
Keyword(s):  
Impedance Matching ◽  
Multiple Input Multiple Output ◽  
Monopole Antenna ◽  
Slot Antenna ◽  
Impedance Bandwidth ◽  
Mimo Antenna ◽  
High Isolation ◽  
Multiple Input ◽  
Input Multiple Output ◽  
Mobile Handset

A compact high isolation ultrawideband (UWB) multiple-input-multiple-output (MIMO) antenna is designed. The proposed MIMO antenna consists of a rectangular monopole antenna and a slot antenna fed by two microstrip lines, respectively. To improve the impedance matching, a circular coupling structure is designed to feed the tapered slot antenna. The parasitic resonance introduced by the ground stub helps to extend the impedance bandwidth of monopole antenna at the upper UWB band. Commonly used complex decoupling or coupling structures are eliminated that endow the proposed antenna minimized foot print, which is preferred in mobile handset. Although without decoupling structure, high isolation is obtained between two antenna elements. Simulation and measurement verify the antenna’s desirable performance, showing a broad impedance bandwidth of 3.1–10.6 GHz with |S11| < −10 dB and |S21| < −20 dB over 3.4–10.6 GHz, and |S21| < −18 dB from 3.1–3.4 GHz.

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