Mutual coupling reduction between two patch antennas using a new miniaturized soft surface structure

Abushamleh, Said; Al‐Rizzo, Hussain M.; Abbosh, Ayman; Kishk, Ahmed A.

doi:10.1109/aps.2013.6711570

Cited by 10 publications

(10 citation statements)

References 5 publications

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“…In this chapter, we report a new approach of how to reduce the complexity of prior existing designs for mutual coupling reduction such as periodic metamaterial/ metasurface constructs [4][5][6][7][8], defected ground plane structures [9,10], soft/hard electromagnetic surfaces [11,12], parasitic elements [13], matching and decoupling networks [14][15][16], and neutralization lines [17]. Our proposed approach can still maintain, and in certain circumstances exceed the performance metrics of traditional approaches well-known in previous art, [18][19][20] using much simpler, costeffective, and novel design alternatives.…”

Section: Introductionmentioning

confidence: 99%

Decoupled and Descattered Monopole MIMO Antenna Array with Orthogonal Radiation Patterns

Al‐Rizzo¹,

Isaac²,

Tariq³

et al. 2020

Modern Printed-Circuit Antennas

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This chapter introduces a novel design concept to reduce mutual coupling among closely-spaced antenna elements of a MIMO array. This design concept significantly reduces the complexity of traditional/existing design approaches such as metamaterials, defected ground plane structures, soft electromagnetic surfaces, parasitic elements, matching and decoupling networks using a simple, yet a novel design alternative. The approach is based on a planar single decoupling element, consisting of a rectangular metallic ring resonator printed on one face of an ungrounded substrate. The decoupling structure surrounds a two-element vertical monopole antenna array fed by a coplanar waveguide structure. The design is shown both by simulations and measurements to reduce the mutual coupling by at least 20 dB, maintain the impedance bandwidth over which S 11 , is less than −10 dB, and reduce the envelope correlation coefficient to below 0.001. The boresight of the far-field radiation patterns of the two vertical monopole wire antennas operating at 2.4 GHz and separated by 8 mm (λ o /16), where λ o is the free-space wavelength at 2.45 GHz, is shown to be orthogonal and inclined by 45° with respect to the horizontal (azimuthal) plane while maintaining the shape of the isolated single antenna element.

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Section: Introductionmentioning

confidence: 99%

Decoupled and Descattered Monopole MIMO Antenna Array with Orthogonal Radiation Patterns

Al‐Rizzo¹,

Isaac²,

Tariq³

et al. 2020

Modern Printed-Circuit Antennas

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“…Various techniques have been previously proposed to reduce the mutual coupling between adjacent elements in an antenna array including the use of cavity backed [6], substrate removal [7], defected ground structures (DGS) [8], metamaterial insulator [9], slotted complementary split-ring resonators [10], defected wall structure [11], and employing electromagnetic band gap (EBG) structures between two patches in microstrip antennas [12]. Although these techniques improve the reduction in mutual coupling however this is not enough for MIMO systems where compactness is required.…”

Section: Introductionmentioning

confidence: 99%

Antenna Mutual Coupling Suppression Over Wideband Using Embedded Periphery Slot for Antenna Arrays

et al. 2018

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This paper presents a new approach to suppress interference between neighbouring radiating elements resulting from surface wave currents. The proposed technique will enable the realization of low-profile implementation of highly dense antenna configuration necessary in SAR and MIMO communication systems. Unlike other conventional techniques of mutual coupling suppression where a decoupling slab is located between the radiating antennas the proposed technique is simpler and only requires embedding linear slots near the periphery of the patch. Attributes of this technique are (i) significant improvement in the maximum isolation between the adjacent antennas by 26.7 dB in X-band and >15 dB in Ku and K-bands; (ii) reduction in edge-to-edge gap between antennas to 10 mm (0.37 λ); and (iii) improvement in gain by >40% over certain angular directions, which varies between 4.5 dBi and 8.2 dBi. The proposed technique is simple to implement at low cost.

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“…To overcome this problem, numerous techniques have been proposed in the literature based on periodic inclusions such as metamaterials (MTM), soft electromagnetic surfaces (SES), and defected ground structures (DGS) . However, these approaches suffer from extremely narrow bandwidths because they employ artificial structures, which are highly resonant in nature.…”

Section: Introductionmentioning

confidence: 99%

Decoupling of Two Closely‐Spaced Planar Monopole Antennas Using Two Novel Printed‐Circuit Structures

Isaac

Al‐Rizzo

Yahya

et al. 2018

Micro & Optical Tech Letters

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A new approach is presented in this paper to reduce mutual coupling between two closely‐spaced planar monopole antennas. The approach employs either two parallel metallic strips or a single strip with a meander‐shaped slotted pattern symmetrically placed between the two antennas with their edges being separated by 4 mm and 8 mm, respectively. The novel aspect of our approach is that the decoupling structures are not only confined in the space shared by the two planar monopole edges but are rather extended above the partial ground plane on one end and to the edge of the substrate on the other end. The design provided measured −10 dB impedance and − 20 dB decoupling bandwidths extending from 1.65 GHz to 4 GHz, and 1.43 GHz to 3.7 GHz, respectively, and the measured realized gains at 2.45 GHz are 3.81 dBi and 2.14 dBi, respectively. The proposed arrays offer excellent MIMO performance in terms of envelope correlation coefficient and link efficiency in realistic MIMO propagation environments through the decoupled frequency regimes.

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Mutual coupling reduction between two patch antennas using a new miniaturized soft surface structure

Cited by 10 publications

References 5 publications

Decoupled and Descattered Monopole MIMO Antenna Array with Orthogonal Radiation Patterns

Decoupled and Descattered Monopole MIMO Antenna Array with Orthogonal Radiation Patterns

Antenna Mutual Coupling Suppression Over Wideband Using Embedded Periphery Slot for Antenna Arrays

Decoupling of Two Closely‐Spaced Planar Monopole Antennas Using Two Novel Printed‐Circuit Structures

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