Frequency reconfigurable multiple-input multiple-output antenna with high isolation

Jin, Zhejun; Lim, Jong‐Hyuk; Yun, Tae‐Yeoul

doi:10.1049/iet-map.2011.0325

Cited by 51 publications

(48 citation statements)

References 15 publications

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“…In particular, in order to remove the air layer, the ground plate and radiation patches are set to be coplanar as described in [10] and [11] with overall sizes of 80 × 40 × 1.6 mm 3 and 110 × 60 × 1.6 mm 3 , respectively. In another case, a design in [12] with a uniplanar structure is printed on a substrate, and has a size of 115 × 40 × 1.6 mm 3 .…”

Section: Introductionmentioning

confidence: 99%

Low Profile Frequency Reconfigurable PIFA Antenna using Defected Ground Structure

Minh¹,

Duc²,

Vu³

et al. 2017

REV J. Electron. Commun.

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Abstract-In this paper, we design and implement a low profile frequency reconfigurable Planar Inverted-F Antenna (PIFA) for WLAN, m-WiMAX and UMTS applications. Different from several conventional designs, the air layer in our antenna is removed, while the radiator patches and the ground plane are printed on two sides of the same substrate. This makes the antenna structure thin and lightweight. The defected ground structure (DGS) and coplanar sorting-trips are also designed for adjusting lower operating frequencies without increasing the antenna's size. Three PIN-diodes are used in appropriate positions for accurate switches between frequency bands. Moreover, the three radiator patches' parameters are optimally selected on all configurations using Genetic Algorithm (GA). Simulation results show that depending on the ON/OFF states of the PIN-diodes, the antenna can operate in three applicable frequency bands, i.e., 2.1 GHz, 2.4 GHz, and 3.5 GHz with the corresponding peak gains of 0.48 dBi, 3.55 dBi, and 4.33 dBi. The antenna occupies an overall size of 63.5×33.5×1.6 mm 3 , which can be easily fabricated and integrated into small wireless devices. Simulated and measured results are also compared to validate the correctness of the antenna design.

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Section: Introductionmentioning

confidence: 99%

Low Profile Frequency Reconfigurable PIFA Antenna using Defected Ground Structure

Minh¹,

Duc²,

Vu³

et al. 2017

REV J. Electron. Commun.

View full text Add to dashboard Cite

show abstract

“…Multiple input multiple output (MIMO) antennas are used to improve wireless communication capacity and effectiveness by using the techniques of multipath [1]. A lower envelope correlation of MIMO antennas is required in order to mitigate the multipath interference problem.…”

Section: Introductionmentioning

confidence: 99%

“…Recently, there has been a high demand on efficient mobile wireless communications that require high transfer rate and high capacity. The performance of microstrip monopole antennas has proven to be very promising in designing multiband and wideband antennas for MIMO systems [1][2][3][4][5]. Good isolation between the MIMO antenna elements is a necessity in order to correctly transmit and receive uncorrelated signals.…”

Section: Introductionmentioning

confidence: 99%

“…Many techniques have been used for decoupling MIMO antenna elements while maintaining miniaturized elements. Isolation improvement structures can substantially enhance the isolation of the MIMO antenna elements [1,2]. In [1], an isolation improvement structure is added between antenna elements to achieve isolation less than −20 dB, while in [2], a slit is added in the ground plane between the two MIMO elements to improve the isolation of the elements.…”

Section: Introductionmentioning

confidence: 99%

“…Isolation improvement structures can substantially enhance the isolation of the MIMO antenna elements [1,2]. In [1], an isolation improvement structure is added between antenna elements to achieve isolation less than −20 dB, while in [2], a slit is added in the ground plane between the two MIMO elements to improve the isolation of the elements. In [7], an isolation structure, formed by parasitic elements, is attached to the ground plane in order to achieve high isolation.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A Printed Wideband Mimo Antenna System for Gsm1800/1900, Umts, Wlan2450, Lte2300/2500, and GPS Applications

Morsy¹

2016

PIER C

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Abstract-A low-profile wideband multiple-input-multiple-output (MIMO) antenna is presented. The proposed antenna is suitable for mobile terminals applications as its measured −10 dB bandwidth ranges from 1.56 GHz to 2.77 GHz. The overall antenna efficiency ranges from 68% to 83% over the operating bandwidth. The overall size of the proposed antenna is 60 × 97 × 0.8 mm 3 . A novel isolation structure is employed to achieve isolation range of −26 dB to −16 dB. The radiation patterns are measured, and envelope correlation coefficient is evaluated. The simulated and measured results are in good agreement.

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A novel miniature hexagonal shape switched pattern and frequency reconfigurable antenna

Chandra

Satyanarayana

Battula³

2019

Int J Communication

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Summary This proposed work introduces the structure of frequency and pattern reconfigurable patch antenna. This proposed design comprises of a hexagon patch antenna with four oblique slits, two longitudinal and two latitudinal slits. Four PIN diodes are used to enable frequency and pattern reconfiguration in the longitudinal and latitudinal slits. The operating frequencies of the proposed reconfigurable antenna are 4.25, 5.65, 6.8, and 8.2 GHz and have a pattern slope of −30°, 0°, +30°, and 180°. The pattern is reconfigurable in four directions without any servo system. The designed antenna is fabricated, and its performance is proved using quantifications. Experimental results have less than 15% error with the simulated results. This antenna is used for C‐band applications.

show abstract

Frequency reconfigurable multiple-input multiple-output antenna with high isolation

Cited by 51 publications

References 15 publications

Low Profile Frequency Reconfigurable PIFA Antenna using Defected Ground Structure

Low Profile Frequency Reconfigurable PIFA Antenna using Defected Ground Structure

A Printed Wideband Mimo Antenna System for Gsm1800/1900, Umts, Wlan2450, Lte2300/2500, and GPS Applications

A novel miniature hexagonal shape switched pattern and frequency reconfigurable antenna

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