A
            <scp>reflection‐only</scp>
            method for characterizing
            <scp>PEC‐backed</scp>
            anisotropic materials using waveguide higher order modes

Nazeri, Amirhossein; Baharian, Mohammad; Abdolali, Ali; Karaaslan, Muharrem

doi:10.1002/mmce.22340

Cited by 8 publications

(4 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In this design, 48 different 6 × 6 resonator layers were formed and combined into the crossdipole antenna to condense transmission and enhance isolation between antenna elements. Nazeri et al [25] presented a new method called reflection only method for characterizing PEC-baked anisotropic materials by using waveguide higher order modes. Reflection coefficients of the TE10 and TE20 modes are reported for two different orientations of the MUT in the waveguide which maintains sufficient data for obtaining the unknowns.…”

Section: Introductionmentioning

confidence: 99%

Split Ring Slot Loaded Compact CPW-Fed Printed Monopole Antennas for Ultra-Wideband Applications With Band Notch Characteristics

Kaur¹,

Kumar²,

Sharma³

2021

PIER C

View full text Add to dashboard Cite

Compact CPW-fed ultra-wideband monopole antennas with band notch characteristics using Split Ring Slots (SRSs) are proposed in this manuscript. Initially, the antenna is designed by using a rectangular shaped patch, and it has been modified to obtain enhanced impedance bandwidth (VSWR ≤ 2) throughout the entire UWB frequency range. Further, the notch band element (split ring slot) has been introduced in the geometry of proposed antenna to generate the band rejection at WLAN frequency centered at 5.3 GHz (5.15-5.81 GHz). Another antenna has been designed by varying the dimensions of SRS to get the rejection of frequency at an X-band satellite communication system centered at 7.4 GHz (7.16-7.71 GHz). The overall size of proposed UWB antennas is compact (18 × 18 mm 2 ), and it is designed on a low cost FR4 glass epoxy substrate with 1.6 mm thickness and 4.4 dielectric constant. The proposed antennas with and without a notch filter are designed by using HFSS V13 simulator and fabricated for the validation of simulated results. Experimental and simulated results are compared and found in reasonable agreement with each other.

show abstract

Section: Introductionmentioning

confidence: 99%

Split Ring Slot Loaded Compact CPW-Fed Printed Monopole Antennas for Ultra-Wideband Applications With Band Notch Characteristics

Kaur¹,

Kumar²,

Sharma³

2021

PIER C

View full text Add to dashboard Cite

show abstract

“…This type of surface has the ability to manipulate the properties of the electromagnetic wave, such as the direction of propagation, phase, amplitude, and polarization [1,2]. Besides these, engineered surfaces are also used for filtering [3,4]. Due to these exotic properties, metasurface finds its way in several advanced application like absorber [5], cloak [6], polarization converter [7], etc.…”

Section: Introductionmentioning

confidence: 99%

Design of Low Profile Multiband Reflective Polarization Converter for Both Linear and Circular Polarized Waves

Bikkuri¹,

Sudhakar²

2021

PIER Letters

View full text Add to dashboard Cite

This paper presents a multifunctional metasurface based reflective polarization converter, to convert the polarization of incident electromagnetic wave in three adjacent frequency bands. In the first band linear to circular polarization conversion and in the remaining two bands linear to orthogonal polarization conversion is achieved. The designed metasurface consists of two circular split rings and a star-shaped split resonator which is fabricated on a metal-backed dielectric substrate. From the simulation results, it is evident that the orthogonal linear polarization conversion band is observed at 9.2 GHz and 12.8 GHz with a polarization conversion ratio of more than 92%. Similarly, it is identified that the same metasurface converts the incident linear polarized wave to circularly polarized wave at 7.3 GHz. Furthermore, the proposed metasurface maintains the handedness of the circularly polarized incident wave at 9.2 & 12.8 GHz frequency upon reflection. The proposed multifunctional polarization converter has a simple planar geometry and low profile which can be used in many applications, such as reflector antennas, imaging systems, remote sensors, and radiometers.

show abstract

“…Thus, a reflection-only waveguide technique was proposed by Nazeri et al recently to characterise the electromagnetic properties of anisotropic materials. 37 Furthermore, in recent study, most researchers were focused on multiple frequency bands. In 2019, Wang et al presented a narrow discrete distance of the dual-band terahertz metamaterial perfect absorbers (MPA) 38 and a rectangular-shaped resonator for a broadband terahertz metamaterial absorber.…”

Section: Introductionmentioning

confidence: 99%

“…recently to characterise the electromagnetic properties of anisotropic materials. 37 Furthermore, in recent study, most researchers were focused on multiple frequency bands. In 2019, Wang et al.…”

Section: Introductionmentioning

confidence: 99%

An octagonal split ring resonator-based double negative metamaterial for S-, X- and Ku-band applications

Idrus

Faruque

Abdullah

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part L:

View full text Add to dashboard Cite

This study aimed to produce a miniaturised double negative metamaterial with a lower resonance frequency. Therefore, a new combination of a multi-circular ring connected with octagonal shape ring metamaterial was developed on a 9 × 9 mm2 dielectric substrate material with a thickness of 1.6 mm, named the Flame Retardant 4 (FR-4). While the selected frequency ranged between 0 and 18 GHz for the unit and array metamaterial design. Numerical simulation was used for the design and analysis of the proposed metamaterial. A few analysis were performed to validate the performance of the new design including the analyses of the different dimensions of the substrate and varying widths of the split gaps. The proposed design structure manifested resonance frequencies at S, X and Ku-bands. The resonance frequency at S-band (3.31 GHz) and X-band (8.60 GHz) presented double-negative (DNG) metamaterial behaviour while X-band (11.93 GHz) and Ku-band (12.99 GHz) presented single-negative (SNG) medium characteristics. The simulation and measured results almost coincided with each other. The compactness of the proposed design was proven by the effective medium ratio (EMR) of 10.07. In conclusion, the miniaturised structure can be accredited for satellite communication and radar applications.

show abstract

A reflection‐only method for characterizing PEC‐backed anisotropic materials using waveguide higher order modes

Cited by 8 publications

References 27 publications

Split Ring Slot Loaded Compact CPW-Fed Printed Monopole Antennas for Ultra-Wideband Applications With Band Notch Characteristics

Split Ring Slot Loaded Compact CPW-Fed Printed Monopole Antennas for Ultra-Wideband Applications With Band Notch Characteristics

Design of Low Profile Multiband Reflective Polarization Converter for Both Linear and Circular Polarized Waves

An octagonal split ring resonator-based double negative metamaterial for S-, X- and Ku-band applications

Contact Info

Product

Resources

About