A Dual-Band Inverted-F MIMO Antenna With Enhanced Isolation for WLAN Applications

Deng, Jieqiong; Li, Jinyong; Zhao, Luyu; Guo, Lixin

doi:10.1109/lawp.2017.2713986

Cited by 250 publications

(173 citation statements)

References 7 publications

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“…This antenna is limited by its size due to the requirement of multiple elements and corrugated ground surfaces to achieve higher gain. The researchers in References , , and report a Multiple Input Multiple Output (MIMO) antenna having dual‐ and triple‐band characteristics with dual‐feeding method to improve the bandwidth. However, the work concentrates only on enhancing isolation among the antenna elements by employing novel decoupling structures.…”

Section: Introductionmentioning

confidence: 53%

Design of a 16‐beam pattern‐reconfigurable antenna for vehicular environment

Ashvanth¹,

Partibane²,

Alsath³

et al. 2020

Int J RF Microw Comput Aided Eng

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This article presents the design of a multipattern antenna with pattern switching for vehicular communications. The proposed antenna has four triangular patches integrated onto a split square ring (SR) resonator to operate at two distinct frequencies, viz. 2.4 and 3.5 GHz. The proposed antenna is designed with a view to enhancing the link reliability of Wireless Local Area Network (WLAN), WiMax, and vehicle to vehicle communication frequencies. Each triangular patch is separately excited using a microstrip line feed to enable beam steering. The ground plane of the antenna is embedded with two SR slots to improve the bandwidth and radiation performance. Further gain enhancement is achieved by loading the antenna with a plane reflector located at a distance of 20 mm from the antenna's ground surface. In reality, this reflector is realized using the vehicle's roof which provides gain enhancement up to 5.2 dBi at 2.4 GHz and 4 dBi at 3.5 GHz. By exciting single to multiple ports sequentially 16 different radiation patterns are obtained, which provides high‐gain omnidirectional coverage. The prototype antenna is fabricated and the simulation results are verified using experimental measurements. From the results, it is evident that the proposed antenna is suitable for vehicular communication applications.

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Section: Introductionmentioning

confidence: 53%

Design of a 16‐beam pattern‐reconfigurable antenna for vehicular environment

Ashvanth¹,

Partibane²,

Alsath³

et al. 2020

Int J RF Microw Comput Aided Eng

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show abstract

“…The isolation between the two planar inverted‐F antennas (PIFAs) is increased higher than 20 dB by etching two slots on the ground plane . The meandering line resonator technique is proved to be effective in achieving good isolation. In Reference , a bent T‐shaped resonator embedded between two C‐shaped monopole antennas increases the isolation higher than 15 dB.…”

Section: Introductionmentioning

confidence: 99%

“…By using pattern and polarization diversity, the three‐element MIMO antenna achieves good isolation higher than 15 dB . As presented in these references, meandering line resonator and polarization diversity all need larger space. For the neutralization line, it may take a long time to find the favorable connection points, which are usually located at low‐impedance area.…”

Section: Introductionmentioning

confidence: 99%

Dual‐element antenna with high isolation operating at the WLAN bands

Shen

Zhang

Jiao

et al. 2019

Micro & Optical Tech Letters

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This article proposes a dual‐element antenna working in the 2.4/5‐GHz WLAN bands with high isolation. The antenna element is a coupled‐fed structure, which is formed by a driven monopole and a shorting branch. The decoupling structure disposed between the elements is a hybrid structure, which includes a protruded ground for the 2.4‐GHz WLAN band and a narrow slot etched on the ground plane for the 5‐GHz WLAN band. Moreover, to reduce the dimension of the protruded ground, two 8.2‐nH lumped inductors are embedded in the branches. The measured −10 dB reflection coefficient bandwidths are in the range of 2400‐2497 MHz and 5150‐5940 MHz. The measured transmission coefficient indicates that a good isolation higher than 20 dB over the two bands is obtained.

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“…However, in these works, either the antenna has a large electrical size, or the AR bandwidth is low, or the antenna suffers from narrow impedance bandwidth . The linearly polarized MIMO antenna in Reference has a meander line resonator used to reduce the coupling between antenna ports.…”

Section: Introductionmentioning

confidence: 99%

High inter‐port isolation dual circularly polarized slot antenna with interdigital capacitor

Chaudhuri

Kshetrimayum

Sonkar

2019

Int J RF Microw Comput Aided Eng

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A planar dual circularly polarized slot antenna is presented. The designed antenna has two tilted “8” shaped slots fed by microstrip lines, one each for transmission (TX) and reception (RX) operations. The isolation between the two ports (TX and RX) is augmented by means of an interdigital capacitor based bandstop filter. The proposed antenna has an impedance bandwidth of 361 MHz centered at 2.293 GHz (2.113‐2.474 GHz) with the isolation between the ports being >17.6 dB which goes up to a value as high as 46 dB within the band of operation. The 3 dB axial ratio (AR) bandwidth is 11.52% centered at 2.1275 GHz (2.005‐2.25 GHz). Because of its high inter‐port isolation within the AR bandwidth, the design is suitable as a full‐duplex antenna for applications in S‐band.

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A Dual-Band Inverted-F MIMO Antenna With Enhanced Isolation for WLAN Applications

Cited by 250 publications

References 7 publications

Design of a 16‐beam pattern‐reconfigurable antenna for vehicular environment

Design of a 16‐beam pattern‐reconfigurable antenna for vehicular environment

Dual‐element antenna with high isolation operating at the WLAN bands

High inter‐port isolation dual circularly polarized slot antenna with interdigital capacitor

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