Determination of Complex Conductivity of Thin Strips with a Transmission Method

Shahpari, Morteza

doi:10.3390/electronics8010021

Cited by 6 publications

(6 citation statements)

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“…A new method and prototype system for measuring the relative permittivity and loss tangent of dielectric materials has been developed by using a perturbation in the input impedance of a transmitting rectangular microstrip patch antenna when the MUT such as dielectric slab, disc or sphere is placed nearby the antenna with some spacing [28,29]. A new method to measure the complex conductivity of the graphene and thin film materials in a thin strip shape was proposed based on the reflection and transmission on the transverse electric(TE) modes in a rectangular waveguide [30]. A small portion of the MUT was placed inside the waveguide for permittivity characterization.…”

Section: Introductionmentioning

confidence: 99%

Slot-Loaded Microstrip Patch Sensor Antenna for High-Sensitivity Permittivity Characterization

Yeo

Lee

2019

Electronics

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A slot-loaded microstrip patch sensor antenna is proposed to enhance sensitivity in measuring the permittivity of planar materials. A thin rectangular slot was etched along the radiating edge of a rectangular patch antenna fed by a microstrip transmission line. Two resonant frequencies were created at a lower frequency compared to the single resonant frequency of a conventional ordinary patch antenna. The sensitivity of the proposed slot-loaded patch antenna was measured by the shift in the resonant frequency of the input reflection coefficient when the planar dielectric superstrate was placed above the patch, and was compared with that of a conventional patch antenna without the slot. The two antennas were designed and fabricated on a 0.76 mm-thick RF-35 substrate for the first resonant frequency to resonate at 2.5 GHz under unloaded conditions. Five different standard dielectric samples with dielectric constants ranging from 2.17 to 10.2 were tested for sensitivity comparison. The experiment results showed that the measured sensitivity of the proposed patch antenna were 3.54 to 4.53 times higher, compared to a conventional patch antenna, for the five samples.

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Section: Introductionmentioning

confidence: 99%

Slot-Loaded Microstrip Patch Sensor Antenna for High-Sensitivity Permittivity Characterization

Yeo

Lee

2019

Electronics

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“…Here, we consider two test functions, namely the uniform and cosh distributions. Performing the integration in (2) and 3, the coefficients of I n U and I n C for uniform and cosh distributions are [6]:…”

Section: Measurement Methodsmentioning

confidence: 99%

“…Before attempting to compute the series numerically, tests from calculus [7] are used to ensure that the series are not diverging. In fact, it is possible to prove that the series in (6) are absolutely convergent. The sequence of elements in all series (6) approaches zero for large values of n which is essential for the convergence of any series.…”

Section: Series Convergencementioning

confidence: 99%

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Convergence Properties of Surface Conductivity Characterization Method for Thin Conductive Strips

Shahpari

Thiel

2020

2020 4th Australian Microwave Symposium (AMS)

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PSPB accepted the recommendations of an ad hoc committee, which reviewed the policy that had previously been revised in November 2010. The highlights of the current policy are as follows:  The policy reaffirms the principle that authors are free to post their own version of their IEEE periodical or conference articles on their personal Web sites, those of their employers, or their funding agencies for the purpose of meeting public availability requirements prescribed by their funding agencies. Authors may post their version of an article as accepted for publication in an IEEE periodical or conference proceedings. Posting of the final PDF, as published by IEEE Xplore®, continues to be prohibited, except for open-access journal articles supported by payment of an article processing charge (APC), whose authors may freely post the final version.  The policy provides that IEEE periodicals will make available to each author a preprint version of that person's article that includes the Digital Object Identifier, IEEE's copyright notice, and a notice showing the article has been accepted for publication.  The policy states that authors are allowed to post versions of their articles on approved third-party servers that are operated by not-for-profit organizations. Because IEEE policy provides that authors are free to follow public access mandates of government funding agencies, IEEE authors may follow requirements to deposit their accepted manuscripts in those government repositories.

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“…In addition to the research in transistors and memory devices, this issue has collected important research on solar cells based on ZnO/Si heterojunctions [13], Bi-doped and Bi-Er co-doped optical fibers [14], high-performance graphene electrolyte double-layer capacitors [15], quantum-dot and sample-grating semiconductor optical amplifiers [16], a transmission method to determine the complex conductivity of thin strips [17], and a high-efficiency CMOS power amplifier with a dual-switching transistor [18].…”

Section: The Current Research Trendsmentioning

confidence: 99%