Annular Slot-Based Miniaturized Frequency-Agile MIMO Antenna System

Hussain, Rifaqat; Ghalib, Asim; Sharawi, Mohammad S.

doi:10.1109/lawp.2017.2726058

Cited by 44 publications

(45 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Moreover, the same decoupling circuit performs well in both the bands of two states, which makes it further compact. The proposed design is 98.6%, 70.2%, 37.3%, 82.9%, 77%, 92%, and 82% smaller than the ones reported in References , respectively. These all characteristics of the proposed MIMO antenna makes it suitable for adaptive small form factor devices.…”

Section: Performance Validation Of the Proposed Frequency Reconfiguracontrasting

confidence: 58%

Compact planar frequency reconfigurable multiple‐input‐multiple‐output antenna with pattern and polarization diversity characteristics for WiFi and WiMAX standards

Sipal

Abegaonkar

Koul

2020

Int J RF Microw Comput Aided Eng

View full text Add to dashboard Cite

A compact planar frequency reconfigurable dual‐band multiple‐input‐multiple‐output (MIMO) antenna with high isolation and pattern/polarization diversity characteristics is presented in this article for WiFi and WiMAX standards. The MIMO configuration incorporates two symmetrically placed identical antenna elements and covers overall size of 24 mm × 24 mm × 0.762 mm. Reconfiguration of each antenna element is achieved by using a PIN diode which allows antennas to switch from state‐1 (2.3‐2.4 GHz and 4.6‐5.5 GHz) to state‐2 (3.3‐3.5 GHz and 4.6‐5.5 GHz). In state‐1, the configuration offers isolation ≥18 dB and 20 dB in lower band (LB) and upper band (UB) respectively; whereas, in state‐2, isolation ≥21 dB and 20 dB in LB and UB respectively is achieved. The same decoupling circuit provides high isolation in dual‐band of two states, which makes overall size of the proposed design further compact. The antennas are characterized in terms of envelope correlation coefficient, radiation pattern, gain, and efficiency. From measured and simulated results, it is verified that the proposed frequency reconfigurable dual‐band multi‐standard MIMO antenna design shows desirable performance in both operating bands of each state and compact size of the design makes it suitable for small form factor devices used in future wireless communication systems.

show abstract

Section: Performance Validation Of the Proposed Frequency Reconfiguracontrasting

confidence: 58%

Compact planar frequency reconfigurable multiple‐input‐multiple‐output antenna with pattern and polarization diversity characteristics for WiFi and WiMAX standards

Sipal

Abegaonkar

Koul

2020

Int J RF Microw Comput Aided Eng

View full text Add to dashboard Cite

show abstract

“…Moreover, the circular parasitic patch is loaded at the center of the MIMO antenna together with 4 L‐shaped branches placed counterclockwise. The volume occupied by this antenna is only 30 × 30× 0.8 mm 3 , which is smaller than the 4 × 4 MIMO antenna in References .…”

Section: Antenna Design and Radiation Principlementioning

confidence: 86%

A compact pattern diversity MIMO antenna with enhanced bandwidth and high‐isolation characteristics for WLAN/5G/WiFi applications

Yang

Zhou

2020

Micro & Optical Tech Letters

View full text Add to dashboard Cite

In this article, a novel multiple input multiple output (MIMO) antenna with compact structure and diverse radiation patterns is designed for a wireless communication device. Four monopole antenna elements are placed orthogonally at the corner of the substrate. A decoupling structure composed of a circular patch and 4 L‐shaped branches placed counterclockwise is printed on the upper surface of the substrate to reduce coupling between antenna elements. Due to the surface current on the circular parasitic patch, which was acquired by coupling with the monopole antenna, the MIMO antenna exhibits an omnidirectional radiation pattern at low frequencies and a directional radiation pattern at high frequencies. In order to verify the accuracy of theoretical analysis and simulated results, the proposed antenna with a compact size of 30 mm × 30 mm is fabricated and measured. The measured results show that the overlapping bandwidths (S11 ≤ −10 dB) are 28.8% from 4.58 to 6.12 GHz and over 4.02 dBi gain. Furthermore, the measured results of pattern diversity are basically consistent with the simulated results, and the measured isolation is up to 15.4 dB, which suggest that the presented antenna can be applied to WLAN/5G/WiFi wireless communication.

show abstract

“…4‐Element based MIMO antennas were presented in References . In References , the 4‐element modified monopole based frequency agile meandered F‐shaped MIMO antenna was tuned over various frequency bands between 0.7 and 3 GHz with total substrate dimensions of 65 × 120 × 1.56 mm 3 .…”

Section: Introductionmentioning

confidence: 99%

Miniaturized frequency reconfigurable pentagonal MIMO slot antenna for interweave CR applications

Hussain

Raza²,

Khan

et al. 2019

Int J RF Microw Comput Aided Eng

Self Cite

View full text Add to dashboard Cite

In this article, a miniaturized 4‐element frequency reconfigurable multiple‐input‐multiple‐output (MIMO) antenna system is presented. The proposed design is low profile with planar configuration. The design consists of pentagonal slot‐based frequency reconfigurable antenna elements. Varactor diodes are used to change the capacitive reactance of the slot. The MIMO antenna system can be tuned over a frequency band covering 3.2 to 3.9 GHz with at least 100 MHz bandwidth within each band. The proposed antenna covers several commercial standards including WiMAX (3.4‐3.6 GHz), TDD LTE (3.6‐3.8 GHz), and Wi‐Fi 802.11y (3.65‐3.7 GHz), along with several other bands. The proposed design was realized on a board of dimensions 60 × 120 mm2. The isolation between adjacent antenna elements is improved using slot‐line based defected ground structures (DGS). The antenna maintains a minimum isolation of 10 dB in its entire covered operating bands. The antenna is also analyzed for its far‐field characteristics and MIMO performance parameters. The proposed design is suitable to be used in mobile handsets for cognitive radio (CR) platforms.

show abstract

Annular Slot-Based Miniaturized Frequency-Agile MIMO Antenna System

Cited by 44 publications

References 12 publications

Compact planar frequency reconfigurable multiple‐input‐multiple‐output antenna with pattern and polarization diversity characteristics for WiFi and WiMAX standards

Compact planar frequency reconfigurable multiple‐input‐multiple‐output antenna with pattern and polarization diversity characteristics for WiFi and WiMAX standards

A compact pattern diversity MIMO antenna with enhanced bandwidth and high‐isolation characteristics for WLAN/5G/WiFi applications

Miniaturized frequency reconfigurable pentagonal MIMO slot antenna for interweave CR applications

Contact Info

Product

Resources

About