Design and Investigation of Closely-Packed Diversity Uwb Slot-Antenna With High Isolation

Mao, Chunxu; Chu, Qing‐Xin; Wu, Yuting; Qian, Yingjing

doi:10.2528/pierc13032301

Cited by 30 publications

(19 citation statements)

References 22 publications

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“…1 In the past few years, there are various research articles available on patch based MIMO antennas. [2][3][4] Due to the rapid development of wireless communication system, antenna designer mostly focused on multiband as well as small antenna structure which is easily integrated in communication devices. In order to achieve best performance of MIMO antenna system, high isolation is required between the antenna elements.…”

Section: Introductionmentioning

confidence: 99%

Triple‐band hybrid antenna with integral isolation mechanism for MIMO applications

Das

Sharma

Gangwar

2018

Micro & Optical Tech Letters

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This research article explains the designing of triband multiple input multiple output (MIMO) hybrid radiator for diversified wireless applications. It comprises of two symmetrically placed hybrid radiators. These hybrid radiators are placed on a FR4 substrate with protruded ground plane to provide maximum isolation ||||S12<−20 normaldnormalB and improved diversity performance. Hybrid radiator consists of two C‐shaped printed lines and cylindrical dielectric resonator (CDR). A dual C‐shaped printed line behaves as a magnetic dipole and produces two different radiating modes in CDRA, that is, HE11δ and TE01δ mode. For confirming the simulated results, the prototype has been constructed and examined. Good agreement has been establish between simulated and experimental results. The proposed radiator is working over three frequency bands, that is, 1.86–2.60, 3.3–3.64, and 4.42–6.75 GHz. Different MIMO diversity performance parameters (ECC, DG, MEG, and CCL) are also examined and found to be in acceptable limit.

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Section: Introductionmentioning

confidence: 99%

Triple‐band hybrid antenna with integral isolation mechanism for MIMO applications

Das

Sharma

Gangwar

2018

Micro & Optical Tech Letters

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“…Considerations for calculating ECC using Equation (9) are similar to those in [10,11,24]. According to [23], Equation (5) is the simplified form (with Sparameter equivalent considerations) for Equation (9); therefore ECC calculated using both the equations should be comparable.…”

Section: Realization Of Diversity Antenna With Reduced Mutual Couplinmentioning

confidence: 99%

“…Compared to existing pattern diversity antenna [10][11][12][13][14], the proposed structure provides compactness, wide dual-pass bandwidth, sharp cutoff for dual band-notch characteristics and low mutual coupling with high diversity. These intrinsic properties make the proposed antenna highly suitable for dual-band diversity applications.…”

Section: Realization Of Diversity Antenna With Reduced Mutual Couplinmentioning

confidence: 99%

“…Isolation between antenna elements in the proposed structures is also validated by evaluating Envelop Correlation coefficient (ECC (ρ e )) for complete bandwidth (2)(3)(4)(5)(6)(7)(8)(9)(10)(11). ECC is the measure of correlation factor between antennas.…”

Section: Realization Of Diversity Antenna With Reduced Mutual Couplinmentioning

confidence: 99%

“…Antenna diversity involves coplanar twin antenna system with separate feeds [10][11][12][13][14], this enhances reception capability of antenna and increases antenna gain. Since it has coplanartwin antennas, it is important that there should be minimum mutual coupling between them.…”

Section: Introductionmentioning

confidence: 99%

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Bluetooth/Uwb Dual-Band Planar Diversity Antenna With Wimax and Wlan Band-Notch Characteristics

Reddy¹,

Chittora²,

Kharche³

et al. 2013

PIER B

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Abstract-In this paper, a stage wise realization of compact Bluetooth -UWB dual-band diversity antenna with WiMAX and WLAN band-notch characteristics is presented.The proposed structure consists of two co-planar semicircular dual band-notch monopole antennas, mounted with planar spiral. Individual antenna configuration provides an impedance bandwidth (VSWR < 2) for dualband i.e., both Bluetooth and UWB bands. For dual band-notch characteristic, two sets of spirals are capacitively coupled with the feed line of antenna. This configuration provides band-notch (VSWR < 2) for WiMAX i.e., (3.3-3.6 GHz) and WLAN (5.13-5.85 GHz) bands. For enhancing reception capabilities of the proposed structure, twin coplanar antennas are used to fulfill diversity requirements. However, due to coplanar and close proximity to each other, there is high possibility of mutual coupling between coplanar antenna elements. To address the mutual coupling between elements, cross-strip variablesized frequency selective structures are used. Antenna diversity of the proposed structure is validated by measuring radiation pattern characteristic and envelop co-relation factor (ECC). A good agreement between measured and simulated responses ensures that the proposed diversity antenna can be used for interference free Bluetooth/UWB dual-band applications.

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Pentagon inscribed circular superwideband fractal MIMO antenna

Lodhi

Singhal

2021

Int J Communication

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A compact circular fractal antenna element loaded with a central pentagonal slot is presented in this paper. This structure consists of a fourth iterative radiator fed by a partially tapered feed line and CPW defected ground plane. A superwide impedance bandwidth of 3.45-52.17 GHz ($175% fractional bandwidth) is achieved. Two multiple input multiple output (MIMO) configurations are also designed and analyzed by using this antenna element. For spatial and pattern diversity configurations, the impedance bandwidth of 3.45-52.2 and 3.1-52.2 GHz are achieved, respectively. The optimized footprints of antenna element, spatial diversity configuration, and pattern diversity configurations are 28 Â 24, 28 Â 53, and 45 Â 48 mm 2 , respectively. The isolation for both MIMO configurations is more than 20 dB in maximum portion of the operating bandwidth. Desirable radiation and diversity performance characteristics are achieved for antenna element and MIMO configurations. The wide bandwidth, compact dimensions along with good radiation, and diversity performance characteristics make the proposed antenna configurations suitable for integration in superwideband wireless communication systems. A good agreement between the experimental and simulation results is observed.coplanar waveguide feeding, defective ground structure, fractal antenna, MIMO applications, superwideband applications, tapered feed line | INTRODUCTIONAfter the allocation of unlicensed frequency spectrum 3.1-10.6 GHz for ultrawideband (UWB) applications by Federal Communication Commission (FCC) in 2002, both academic and industry researchers started making efforts for the integration of UWB technology in wireless communication systems. This integration resulted in secure wireless communication services at high data rates over a wide range of frequencies. With the advancement in technology, the demands for security, data rate and wide bandwidth increased exponentially. These demands required antenna structures which can provide service for both short-range and long-range communication (already covered by UWB spectrum). To fulfill these demands, a new technology, that is, superwideband (SWB) technology, having ratio bandwidth of 10:1 or more is defined. To integrate SWB technology in wireless communication systems, several antenna structures were explored to operate over a wide range of frequencies and can be integrated with compact communication devices. Among the various explored antenna structures, monopole antennas are found be good candidates who can provide

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Design and Investigation of Closely-Packed Diversity Uwb Slot-Antenna With High Isolation

Cited by 30 publications

References 22 publications

Triple‐band hybrid antenna with integral isolation mechanism for MIMO applications

Triple‐band hybrid antenna with integral isolation mechanism for MIMO applications

Bluetooth/Uwb Dual-Band Planar Diversity Antenna With Wimax and Wlan Band-Notch Characteristics

Pentagon inscribed circular superwideband fractal MIMO antenna

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