Bandwidth Extension of Ultra-wideband Microstrip Antenna Using Metamaterial Double-side Planar Periodic Geometry

Hamad, Ehab K. I.; Nady, G.

doi:10.13164/re.2019.0025

Cited by 14 publications

(10 citation statements)

References 20 publications

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“…In order to support the 5G for both the small quota of the microwave band and the large quota of the mm-wave band, several methods have been presented to enhance the bandwidth of microstrip patch antennas [14], [15]. One of the most popular ways is to introduce some slots into the patch radiators [16], which can yield extra controllable resonances for bandwidth enhancement.…”

Section: Introductionmentioning

confidence: 99%

Design and Implementation of UWB Slot-Loaded Printed Antenna for Microwave and Millimeter Wave Applications

et al. 2021

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In this paper, single-layer ultra-Wide Band (UWB) microstrip patch antennas loaded with asymmetrical U-shaped slot in both microwave and millimeter wave applications are presented. These novel antennas cover a fractional bandwidth around 40% in both microwave and millimeter applications. The applications cover the C-band (4-8) GHz, V-band (40-75) GHz, and W-band (75-110) GHz. In addition to that, it is the sole article that cover the bands (5.15-5.825) GHz and (8.025-8.4) GHZ for WiMaX and ITU band applications, respectively. Moreover, it covers three bands for Automotive radar applications within (71-76) GHz, (81-86) GHz, and (92-95) GHz, in addition to further 5G/mm-wave applications at 60 GHz. Each antenna is coaxial fed and implemented on a Roger 5880 substrate with relative dielectric constant of 2.2, thickness of 1.575 mm and loss tangent of 0.0009. They operate over the frequency band (5.5-9.5) GHz for microwave band and (55-95) GHz for mm-wave band. To achieve either a notch in other bands or develop a multi-band structure, the conventional ground is replaced by two different structures. The first ground is an array of patches and the other is a mushroom ground. The first ground results in a notch within the band (73-79) GHz while the second one achieves a multi-band within (55-68) GHz and (81-95) GHz. Both antennas are simulated and verified using Finite Difference Time-Domain analysis (FDTD); CST Microwave Studio and Finite Element Method (FEM); Ansoft HFSS. For microwave band, the antenna is fabricated and measured for verification. Concerning the mm-wave version, three different types of ground planes are presented; traditional, periodic structure of patches and mushroom. The structure with periodic patches conducts the same band as the traditional ground plane does. This is a prestep for the design of the notches. The mushroom ground is carried out for multi-band applications. The average gain of the antennas is 7 dB.The measured two dimensional cuts of the radiation pattern, radiation efficiency, and reflection coefficient of the microwave version are presented and are in good agreement with the simulated results while for the mm-wave antenna the same parameters are simulated with two different methods and are in good agreement.

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Section: Introductionmentioning

confidence: 99%

Design and Implementation of UWB Slot-Loaded Printed Antenna for Microwave and Millimeter Wave Applications

et al. 2021

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“…An array with three antenna elements of high diversity was proposed for MIMO applications at 2.45 GHz 14 . A conformal array for MIMO applications was proposed at Wi‐Fi bands in Hamad and Nady 15 …”

Section: Introductionmentioning

confidence: 99%

Reconfigurable broadband printed monopole antenna for portable smart IoT applications

Al-Janabi

Kayhan

2021

Int J Communication

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Summary The proposed work presents a design of a smart printed monopole antenna separated from a Hexagonal Matching Load (HML) with an air gap. The patch is fed by a coplanar waveguide, while the HML is connected to the ground plane through two pin diodes to realize antenna reconfiguration through controlling the surface current motion. The antenna structure is mounted on FR‐4 epoxy substrate with size of 23 mm × 30 mm to fit the portable devices. After running four different switching scenarios, an observable change in the antenna performance is demonstrated. The proposed antenna provides a gain of 3.1 dBi at 2.45 GHz when the two diodes are switched ON. However, the antenna gain is changed to 1.6 dBi when the two diodes are set OFF. It is demonstrated that the proposed technique shows an effective approach to control the antenna performance without the need for DC blocking capacitor for RF choke. Nevertheless, the Specific Absorption Rate (SAR) effects are evaluated with respect to the human head tissues for all considered scenarios. Finally, the antenna radiation leakages to the human body are also tested numerically and experimentally for validation.

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“…There are various bandwidth and gain enhancement techniques such as loading of different slot shapes and sizes [4], notches on the patch or in the ground plane and the adoption of metamaterials (MTM) in their fabrication [5]. A U-shape structure is being used for designing a microstrip patch antenna with resonating frequency in the range of S band, various slot shapes are used to shift the resonating frequency range to L-band [6].…”

Section: Introductionmentioning

confidence: 99%

Tri-Band Slot-Loaded Microstrip Antenna for Internet of Things Applications

Refaat

Abdalaziz

Hamad

2021

AEM

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A new design of a multiband microstrip patch antenna using slots in the patch as well as defected ground structures (DGS) implemented in the ground plane is proposed. Multi resonance response was obtained by etching the DGS shapes in the ground plane of a Traditional patch operates at 5.2 GHz, which is the common frequency for the Internet of Things (IoT) applications. The novel outcome of this work is a compact antenna that resonates at three bands, viz. 2.42, 5.22 and 5.92 GHz. Different shapes of slots were used to improve the antenna performance at the different resonances. The antenna used the inset feeding technique to improve impedance matching. Rogers RO3003 substrate of 3 relative dielectric constant, 0.0013 loss tangent, and 1.5 mm thickness was used to build the antenna. The designed antenna was simulated using HFSS software. The good consistency between simulations and measurements confirmed the antenna's ability to improve the benefits for IoT applications at the three different frequencies.

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Bandwidth Extension of Ultra-wideband Microstrip Antenna Using Metamaterial Double-side Planar Periodic Geometry

Cited by 14 publications

References 20 publications

Design and Implementation of UWB Slot-Loaded Printed Antenna for Microwave and Millimeter Wave Applications

Design and Implementation of UWB Slot-Loaded Printed Antenna for Microwave and Millimeter Wave Applications

Reconfigurable broadband printed monopole antenna for portable smart IoT applications

Tri-Band Slot-Loaded Microstrip Antenna for Internet of Things Applications

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