Microstrip Patch Antennas With Enhanced Gain by Partial Substrate Removal

Yeap, Siew Bee; Chen, Zhi Ning

doi:10.1109/tap.2010.2052572

Cited by 76 publications

(33 citation statements)

References 12 publications

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“…Previously the author of this paper has been able to control the multi-band performance of the antenna by introducing air cavities at the radiating edges of the patch [8]. Heterogeneous substrates, prepared by removing the substrate surrounding the patch, partially and completely, have been used to increase the gain of a microstrip antenna by supressing the surface waves [9]. Substrate removal has also been applied to a cavity backed slot antenna and provided an improvement in its bandwidth and efficiency [10].…”

Section: Control Of Surface Waves and Current Modesmentioning

confidence: 99%

Applications and Future Prospects for Microstrip Antennas Using Heterogeneous and Complex 3-D Geometry Substrates

Whittow¹,

Bukhari²,

Jones³

et al. 2014

PIER

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Abstract-This paper critically reviews the electromagnetic advantages of altering the dielectric substrate section of the antenna as opposed to the conducting elements. Changing the dielectric has been used to improve the bandwidth, efficiency and gain of antennas. Heterogeneous substrates have also been employed to lower the effective permittivity, suppress surface waves for high indexed substrate materials and reduce mutual coupling. In the second half of this paper, 3-D printing has been used to create substrates with reduced material consumption for a lightweight flexible wearable antenna.

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Section: Control Of Surface Waves and Current Modesmentioning

confidence: 99%

Applications and Future Prospects for Microstrip Antennas Using Heterogeneous and Complex 3-D Geometry Substrates

Whittow¹,

Bukhari²,

Jones³

et al. 2014

PIER

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show abstract

“…The corrugated structure can improve the radiation pattern and antenna gain of the Vivaldi antenna, and better front-to-back ratio can be achieved [13][14][15][16]. Removing some parts from substrate surrounding the antenna radiating element will also increase the antenna gain [17].…”

Section: Introductionmentioning

confidence: 99%

A Novel High Directive Willis-Sinha Tapered Slot Antenna for GPR Application in Detecting Landmine

Mohanna¹,

Abdallah²,

El‐Hennawy³

et al. 2018

PIER C

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Abstract-A novel Ultra-wideband Willis-Sinha Tapered Slot antenna for landmine detection using Ground Penetrating Radar (GPR) system with enhanced gain and directivity is presented. The structure is constructed on a 235 × 270 mm 2 FR4 dielectric substrate. The antenna is fed by a novel tapered coplanar waveguide (CPW) to coplanar stripline (CPS) transition feed. The antenna's impedance bandwidth is extended by adding an antenna arm constructing parabola shape with the antenna element. The antenna has a corrugated structure along the antenna outer edges to improve radiation efficiency and get higher directivity. Also, a mushroom-like circular EBG structure is used in the lower side of the antenna arm to reduce interference and enhance front-to-back ratio (F/B ratio). A partial substrate removal, like circular cylinders inside the substrate, is aligned with the antenna tapered profile to obtain better radiation efficiency and enhance antenna gain. The operational bandwidth of this antenna extends from 0.18 to 6.2 GHz. The minimum return loss reaches 60 dB. The average directivity reaches 12.2 dBi while the gain and radiation efficiency are 11.8 dBi and 92%, respectively with gain enhancement of 195% due to using corrugated structure and air cavities. The front-to-back ratio (F/B ratio) is 23 dB. Also, a size reduction of 48% is achieved due to using extended arm. The antenna performance was simulated and measured. Good agreement was found between numerical and experimental results. The proposed antenna is suitable for various ultra-wideband applications especially in landmine detection. The design of the proposed antenna is given in very simple five design steps.

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“…This effect degrades the isolation between two antennas. Various structures, such as an electromagnetic band-gap [1], soft/ hard surface [2,3], and partial substrate removal [4,5], have been proposed to reduce the surface waves in printed MSAs.…”

Section: Introductionmentioning

confidence: 99%

Effect of Loading Split-Ring Resonators in a Microstrip Antenna Ground Plane

Lee¹

2015

Journal of electromagnetic engineering and science

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This study presents a new, simple method for improving the front-to-back (F/B) ratio of a microstrip patch antenna (MSA) based on surface wave suppression. The back radiation of the MSA is significantly reduced by using the meandered ground plane edges and placing split-ring resonators (SRRs) in the middle of the meandered slots. By loading SRRs near the center of the meandered ground plane edges, some parts of the diffracted back-lobe power density can be reduced further. Compared to the F/B ratio of a conventional MSA with a full ground plane of the same size, an improved F/B ratio of 18 dB has been achieved experimentally for our proposed MSA. This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/ by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. ⓒ

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Microstrip Patch Antennas With Enhanced Gain by Partial Substrate Removal

Cited by 76 publications

References 12 publications

Applications and Future Prospects for Microstrip Antennas Using Heterogeneous and Complex 3-D Geometry Substrates

Applications and Future Prospects for Microstrip Antennas Using Heterogeneous and Complex 3-D Geometry Substrates

A Novel High Directive Willis-Sinha Tapered Slot Antenna for GPR Application in Detecting Landmine

Effect of Loading Split-Ring Resonators in a Microstrip Antenna Ground Plane

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