Mutual Coupling Reduction Between Very Closely Spaced Patch Antennas Using Low-Profile Folded Split-Ring Resonators (FSRRs)

Habashi, Asieh; Nourinia, Javad; Ghobadi, Ch.

doi:10.1109/lawp.2011.2165931

Cited by 144 publications

(96 citation statements)

References 7 publications

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“…In [9], the mutual coupling is minimized by introducing a defect on the ground plane between the antennas. In [10], the mutual coupling has been reduced significantly at the cost of some complicated structure at the ground plane. However, the system suffers from radiation pattern degradation.…”

Section: Introductionmentioning

confidence: 99%

Design of a Compact Two Element Mimo Antenna System With Improved Isolation

Kamili¹,

Aldhaheri²,

Talha³

et al. 2014

PIER Letters

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Abstract-A novel compact two-element MIMO (Multiple Input Multiple Output) antenna system operating from 6.1-7.8 GHz is proposed for wireless applications. The developed antenna system resonates at 6.8 GHz frequency, giving an impedance bandwidth of 25% (based on S 11 < −10 dB). An efficient technique is proposed to reduce the mutual coupling developed in the antenna system by employing a simple microstrip patch element in between the antennas. Using the proposed method, the mutual coupling is reduced to around −33 dB at the resonant frequency and maintaining the overall mutual coupling less than −20 dB in the operating band. The experimental models are developed for both the MIMO systems, i.e., without and with patch element between the antennas and the results are compared with simulated results. Also, Envelope Correlation Coefficient (ECC) between the two antennas is calculated and compared.

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Section: Introductionmentioning

confidence: 99%

Design of a Compact Two Element Mimo Antenna System With Improved Isolation

Kamili¹,

Aldhaheri²,

Talha³

et al. 2014

PIER Letters

View full text Add to dashboard Cite

show abstract

“…In the same time, the applicability of the propose structure in the case of smaller inter-element distances (d ≤ 0.5λ 0 ), in phased arrays for example is very important [13,14]. Hence, simulations with a distance of 0.5λ 0 were performed.…”

Section: 8mentioning

confidence: 99%

CSRRS for Efficient Reduction of the Electromagnetic Interferences and Mutual Coupling in Microstrip Circuits

Han¹,

Hafdallah-Ouslimani²,

Zhang³

et al. 2012

PIER B

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Abstract-This paper proposes an efficient microstrip isolator filter which suppresses the surface and lateral waves (SW and LW) in planar antenna arrays. The structure consists in a double or triple row of periodic and flipped array of subwavelength Complementary Split Ring Resonators (CSRRs). The array of CSRRs is etched on a dielectric substrate backed by a metallic ground plane. These structures can both block the electromagnetic (EM) energy in one direction and guide it along the other transverse direction. In particular, the flipped array of CSRRs presents wider bandgap characteristic (stopband ≥ 20%) than periodic array of CSRRs (∼ 16%) and conventional array of SRRs (≥ 12%). Then, the metamaterial filter is inserted between two 6.1 GHz probe-fed patch antenna elements separated by a distance of 0.8λ 0 . Excellent agreements between the simulated and the experimental results are obtained. In fact, a significant reduction of the EM mutual coupling is achieved, more than 24 dB, over a wide frequency bandwidth. Moreover, the proposed CSRR structures are compact, low complex and, as printed antennas, are very easy to manufacture. They have numerous applications in MIMO systems and directive phased arrays.

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“…Split ring resonator (SRRs) units with negative magnetic are introduced to reduce mutual coupling in a highprofile MIMO antenna design [13]. Defected ground structure (DGS) as an effective artificial unit is etched on the ground as shown in [14]. Coupled resonator decoupling network (CRDN) is reported in [15][16][17][18][19][20], which can realize a high-order isolation response for wideband applications.…”

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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Mutual Coupling Reduction Between Very Closely Spaced Patch Antennas Using Low-Profile Folded Split-Ring Resonators (FSRRs)

Cited by 144 publications

References 7 publications

Design of a Compact Two Element Mimo Antenna System With Improved Isolation

Design of a Compact Two Element Mimo Antenna System With Improved Isolation

CSRRS for Efficient Reduction of the Electromagnetic Interferences and Mutual Coupling in Microstrip Circuits

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

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