Eigenmode Decoupling for Mimo Loop-Antenna Based on 180â° Coupler

Zuo, Shaoli; Yin, Yingzeng; Zhang, Zhi-Ya; Wu, Weijun; Xie, and Jiao-Jiao

doi:10.2528/pierl11071109

Cited by 18 publications

(19 citation statements)

References 6 publications

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“…Figure 3(a) shows the simulated S-parameters for the proposed antenna with different W and L. It is seen that with the increase of size of the ground plane, the return loss of the antenna varies little, but isolation between the antenna elements decreases, which is caused by the increase of the distance of the antenna elements. This is especially significant at the high band (6)(7)(8)(9)(10)(11)(12). In order to get a compact size and high isolation, W and L are chosen as 40 mm.…”

Section: Parameter Studymentioning

confidence: 99%

See 1 more Smart Citation

Compact Ultrawideband Mimo Antenna With Wlan/Uwb Bands Coverage

Ren¹,

Mi²,

Yin³

2014

PIER C

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Abstract-A compact multiple-input-multiple-output (MIMO) antenna that covers the WLAN (2.4 GHz) and UWB (3.1-10.6 GHz) bands for wireless device applications is presented. The proposed antenna consists of two open L-shaped slot (LS) antenna elements and a narrow slot on the ground plane. The antenna elements are placed perpendicularly to each other to obtain a high isolation, and the narrow slot is added to reduce the mutual coupling between antenna elements at the WLAN band (2.4 GHz). The presented MIMO antenna has a small size of 40×40 mm 2 , and the prototypes of antenna is fabricated and measured. The measured results show that the antenna has an impedance bandwidth of larger than 2.4-10.6 GHz with the mutual coupling less than 20 dB in WLAN band and 18 dB in 3.1-10.6 GHz, making the antenna a good candidate for portable applications.

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Section: Parameter Studymentioning

confidence: 99%

“…The eigen-mode decomposition scheme is used to reduce the coupling between two closed monopoles [9] and loop antennas [10]. The low mutual coupling can also be obtained by using the inserted component scheme [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Compact Ultrawideband Mimo Antenna With Wlan/Uwb Bands Coverage

Ren¹,

Mi²,

Yin³

2014

PIER C

Self Cite

View full text Add to dashboard Cite

show abstract

“…In [6], a small branch is introduced to improve the antenna to antenna isolation with a fractional bandwidth of 12.4%. 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].…”

Section: Introductionmentioning

confidence: 99%

“…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%

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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“…Ref. [12] separates decoupling strategies into four classes: 1) Eigen-mode Decomposition Scheme: Its guideline is to diagonalize the scattering matrix of a compact array using 90 and /or180 [13]- [17].…”

Section: Introductionmentioning

confidence: 99%