Mutual coupling between reduced surface-wave microstrip antennas

Khayat, M.A.; Williams, J.T.; Jackson, David R.; Long, Stuart A.

doi:10.1109/8.899675

Cited by 98 publications

(52 citation statements)

References 10 publications

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“…These are moderate to wide bandwidth radiators, covering fractional frequency ranges from 5 to 75%. When patch antennas are employed in array environments, the surface waves that are generated (the more so in the case of stacked-patches antennas) have a detrimental effect of the antenna's efficiency, especially at large scanning angles [12]. The most adequate solution to the suppression of the surface waves is to place the radiating patch(es) in a metallic cavity [13]- [15].…”

Section: A the Choice For The Type Of Primary Radiatormentioning

confidence: 99%

The Design of Shared Aperture Antennas Consisting of Differently Sized Elements

Coman

Lager

Ligthart

2006

IEEE Trans. Antennas Propagat.

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Abstract-A consistent strategy for the design of finite array antennas consisting of differently sized radiating elements is discussed. In view of increasing the total bandwidth of the antenna system, while maintaining a low mutual coupling between the elementary radiators, sparse subarrays, operating at adjacent frequency ranges, are interleaved on a common (shared) aperture. The sparse architectures are designed using a combinatorial method that ensures an acceptable behavior in the side-lobes region in conjunction with a narrow beamwidth. The effect of the mutual coupling between identical and differently sized elements is accurately evaluated and is accounted for in predicting the performance of each individual radiator. The concept is illustrated by designing a shared aperture antenna consisting of two interwoven subarrays that jointly cover a fractional bandwidth of 14% in the X-band. Cavity-backed, stacked-patches antennas with coaxial feeding are used as elementary radiators.Index Terms-Mode-matching methods, shared aperture, sparse array antennas.

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Section: A the Choice For The Type Of Primary Radiatormentioning

confidence: 99%

The Design of Shared Aperture Antennas Consisting of Differently Sized Elements

Coman

Lager

Ligthart

2006

IEEE Trans. Antennas Propagat.

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“…The mutual coupling S ab between two patches expressed in decibels can be defined as [7] ( ) where Zaa is the self-impedance of the patch, Zab is the mutual impedance between the two patches, and Z 0 is the feed line impedance. We typically assume Z aa = Z 0 = 50.…”

Section: The Approximate Mutual Impedance Formula For Closely Spaced mentioning

confidence: 99%

An Improvement of Closed-Form Formula for Mutual Impedance Computation

Trinh-Van¹,

Hwang²,

Park³

et al. 2013

Journal of electromagnetic engineering and science

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In this paper, we present an improvement of a closed-form formula for mutual impedance computation. Depending on the center-to-center spacing between two rectangular microstrip patch antennas, the mutual impedance formula is separated into two parts. The formula based on synthetic asymptote and variable separation is utilized for spacings of more than 0.5 λ0. When the spacing is less than 0.5 λ0, an approximate formula is proposed to improve the computation for closely spaced elements. Simulation results are compared to computational results of mutual impedances and mutual coupling coefficients as functions of normalized center-to-center spacing in both E-and H-plane coupling configurations. A good agreement between simulation and computation is achieved.Key Words: Array Antenna, Closed-Form Formula, Microstrip Patch, Mutual Coupling, Mutual Impedance.

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“…The requirement of a more minor antenna size much struggle with the desired wide band or multiband applications. Reconfigurable or tunable antennas supply potential results and have appealed significantly research attempts [1][2][3][4]. Instead than backing wide-band or multiband performances at the same time, accredited antennas are controlled to hop over unlike bands dynamically.…”

Section: Introductionmentioning

confidence: 99%

“…This alone ownership has been utilized to design antenna systems with a improve gain and efficiency, lower side-lobes and back-lobe levels amend isolations within array elements, by crushing surface wave modes [2][3][4]. The EBG substrate has been utilized to alleviate some withdraws of conventional microstrip antennas [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

“…Various methods have been aimed to bring down the consequences of surface waves. One approach path proposed is the synthesized substrate that lets down the effectual dielectric constant of the substrate either below or all over the patch [2][3]. Other approach paths are to apply parasitic elements [4][5] or to apply a minimized surface-wave antenna [6].…”

Section: Introductionmentioning

confidence: 99%

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Design of Rectangular Microstrip Patch Antenna by Improving the Performance Parameters with EBG Structures

Sharma¹,

Sharma²

2014

IJCA

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In this paper, the execution of rectangular patch antenna is mended applying a newly cylindrical electromagnetic bandgap (EBG) substrate. The microstrip patch antenna is fed in the driven terminal. This EBG structure, when constituted with microstrip patch antenna to radiation pattern and return loss got from menstruation appearance a better impedance matching and a gain enhancement of the directed antenna. The gain utilizing the designed structure has been found to be 5.5123dB, which are merits for transmitting data over a retentive distance. Wideband antenna detects its applications in mobile sensors, data ingathering and tracking diligence.

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Mutual coupling between reduced surface-wave microstrip antennas

Cited by 98 publications

References 10 publications

The Design of Shared Aperture Antennas Consisting of Differently Sized Elements

The Design of Shared Aperture Antennas Consisting of Differently Sized Elements

An Improvement of Closed-Form Formula for Mutual Impedance Computation

Design of Rectangular Microstrip Patch Antenna by Improving the Performance Parameters with EBG Structures

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