Miniaturized Double-Layer EBG Structures for Broadband Mutual Coupling Reduction Between UWB Monopoles

Li, Qian; Feresidis, A.P.; Hall, Peter

doi:10.1109/tap.2014.2387871

Cited by 190 publications

(107 citation statements)

References 13 publications

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“…Currently, various methods have been used to decrease antenna mutual coupling [2][3][4][5][6][7][8][9][10][11]. In [2], a parasitic ring resonator with half wavelength is used.…”

Section: Introductionmentioning

confidence: 99%

“…Eigen-mode has also been used in MIMO antenna decoupling designs, as reported in [7][8][9], and the orthogonality of the modes is utilized. Artificial metamaterial structures as a good approach are used in [9][10][11]. Electromagnetic band gap (EBG) structures [10][11][12] are used to suppress surface wave propagation for decreasing the mutual coupling in a wide band.…”

Section: Introductionmentioning

confidence: 99%

“…Artificial metamaterial structures as a good approach are used in [9][10][11]. Electromagnetic band gap (EBG) structures [10][11][12] are used to suppress surface wave propagation for decreasing the mutual coupling in a wide band. Split ring resonator (SRRs) units with negative magnetic are introduced to reduce mutual coupling in a highprofile MIMO antenna design [13].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A Second Order Decoupling Design Using a Resonator and an Interdigital Capacitor for a Mimo Antenna Pair

Wang¹,

Zhao²,

Chen³

et al. 2017

PIER Letters

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Abstract-In this paper, a second-order decoupling design using a resonator and an interdigital capacitor is proposed for an MIMO antenna pair in mobile terminals. The proposed antenna pair consists of an interdigital capacitor and an open loop resonator. By properly combining the responses of the resonator and interdigital capacitor, a second-order decoupling performance can be achieved. Meanwhile, isolation between the two antennas is increased by at least 15 dB within the frequency band of interest, from −5 dB to −20 dB. Moreover, the decoupled antenna pair maintains good impedance matching performance from 2.4 GHz to 2.5 GHz. The proposed decoupled antenna pair and its coupled counterpart have been fabricated and measured. The measured results agree with the simulation ones. The proposed MIMO antenna pair is an eligible candidate for Wi-Fi MIMO applications in the 2.4 GHz band.

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“…Currently, various methods have been used to decrease antenna mutual coupling [2][3][4][5][6][7][8][9][10][11]. In [2], a parasitic ring resonator with half wavelength is used.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A Second Order Decoupling Design Using a Resonator and an Interdigital Capacitor for a Mimo Antenna Pair

Wang¹,

Zhao²,

Chen³

et al. 2017

PIER Letters

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show abstract

“…Various decoupling methods for UWB MIMO antennas to improve performance in multi-path fading channels have been previously reported, for example, double-layer electromagnetic band-gap (EBG) structures for reducing the electromagnetic coupling on a common ground [7], taking the inherent advantage of the self-complementary structure to decouple [8], vertical feeding placement without using any extra decoupling structures [9], introducing reflective units such as parasitic components [10] or protruding ground stubs [11,12], using defected ground structure (DGS) [13] to suppress surface wave, adding neutralization lines (NL) to reduce the coupling current flowing [14]. Overall, most of the previously published decoupling structures are complex and then make them difficult for mass production.…”

Section: Introductionmentioning

confidence: 99%

Compact Uwb Mimo Ground Linearly Tapered Slot Antenna Decoupled by a Stepped Slot

Huang¹,

Xiao²

2017

PIER C

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Abstract-A very compact ultra-wideband (UWB) multiple-input-multiple-output (MIMO) ground linearly tapered slot Antenna (LTSA) is presented in this paper. On a cost-effective FR4 substrate, it consists of a ground plane and two microstrip feedlines. Its overall dimension is only 22 × 26 mm 2 . To miniaturize the dimension of the antenna, two linearly tapered slots on the ground plane act as the main radiator. Then it does not need extra large radiation patch. In particular, a simple embedded threelevel stepped slot on the central ground, brings high isolation in the whole UWB band. In addition, two rectangular slots cut in the feedlines widen the impedance bandwidth. Simulated and measured results verify S 11 < −10 dB and S 12 < −18 dB at 3.1 GHz −12 GHz and good diversity performance. Therefore, the proposed MIMO antenna has potential for portable devices applications.

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“…The hybrid method, which is composed of aforementioned methods, is extensively employed to enhance the isolation. Moreover, EBG [9] and neutralization line [10] are viable methods to improve isolation. But they are normally complex to design and occupy considerable space.…”

Section: Introductionmentioning

confidence: 99%

Compact Uwb Band-Notch Mimo Antenna With Embedded Antenna Element for Improved Band Notch Filtering

Tao¹,

Feng²

2016

PIER C

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Abstract-A compact printed ultra-wideband (UWB) multiple-input-multiple-output (MIMO) antenna with embedded structure is proposed. The proposed MIMO antenna consists of two coplanar waveguide-fed (CPW) antenna elements, and the element with smaller size is built in the radiator of the other element. Thus, the compact size, 30 × 22 mm 2 , is completely determined by the larger one, which makes the MIMO antenna have similar size to the conventional single UWB antennas. The antenna elements are fed perpendicularly to achieve superior isolation. A T-shaped parasitic stub, a pair of C-shaped slots, an extended Z-shaped stub and a rectangular slot are employed and each two structures filter the interference for one antenna element. The achieved rejection bands remain relatively stable over the stop-band frequencies and decline rapidly at cut-off frequencies. Thus, the proposed MIMO antenna obtains superior filtering performance. The proposed antenna is fabricated and measured. The measured results indicate that two antenna elements can operate in the impedance bandwidth larger than 3.1-10.6 GHz with notched bands of 5-6 GHz, and the mutual coupling is below −15 dB over the entire UWB frequency spectrum. The proposed MIMO antenna is a competitive candidate for UWB MIMO communication systems.

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Miniaturized Double-Layer EBG Structures for Broadband Mutual Coupling Reduction Between UWB Monopoles

Cited by 190 publications

References 13 publications

A Second Order Decoupling Design Using a Resonator and an Interdigital Capacitor for a Mimo Antenna Pair

A Second Order Decoupling Design Using a Resonator and an Interdigital Capacitor for a Mimo Antenna Pair

Compact Uwb Mimo Ground Linearly Tapered Slot Antenna Decoupled by a Stepped Slot

Compact Uwb Band-Notch Mimo Antenna With Embedded Antenna Element for Improved Band Notch Filtering

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