FDTD method for property analysis of waveguide loaded artificial circular dielectric resonator with anisotropic permittivity

Ludiyati, Hepi; Suksmono, Andriyan Bayu; Munir, Achmad

doi:10.1109/piers.2016.7734327

Cited by 5 publications

(3 citation statements)

References 11 publications

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“…In this case, an evanescent mode occurs in the free space regions with the phase constant () in (15) and (16) defined as   j   and the relative permittivity in -direction () set to be 1. As a consequence, the wave number at the free space regions is written in (17). Moreover by employing the short-open termination method [8], the input impedance of artificial CDR can be calculated as given in (18).…”

Section: Theoretical Analysis Of Resonant Frequency For Anisotropic Amentioning

confidence: 99%

“…The resonant frequency expressions of artificial CDR are formulated for TE and TM wave modes by using proper boundary conditions required for the Maxwell equations derivation. The anisotropic permittivity of artificial CDR is obtained by making relative permittivity in one direction higher than others and then the resonant frequencies of first three successive TE and TM wave modes are analyzed [16]- [17]. The analysis of resonant frequency is also conducted for conventional CDR loaded in the same waveguide.…”

Section: Introductionmentioning

confidence: 99%

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Theoretical Analysis of Resonant Frequency for Anisotropic Artificial Circular Dielectric Resonator Encapsulated in Waveguide

Ludiyati¹,

Suksmono²,

Munir³

2017

ijeei

Self Cite

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The analysis of resonant frequency for anisotropic artificial circular dielectric resonator (CDR) encapsulated in waveguide is investigated theoretically. The anisotropic permittivity of CDR is established by taking a relative permittivity value in one direction higher than the values of other directions in cylindrical coordinate system. By deriving Maxwell time-dependent curl equations for the CDR inside of a short-ended circular waveguide and then applying proper boundary conditions for the waveguide walls, mathematical formulation to calculate resonant frequencies for transverse electric (TE) and transverse magnetic (TM) wave modes as the function of material thickness and the anisotropic permittivity value are determined. For a comparison, the analysis is also performed for conventional CDR loaded in the same waveguide. In this case, the conventional CDR uses a natural dielectric material with isotropic permittivity. From the results, it shows that the anisotropic artificial CDR has resonant frequencies lower than the conventional CDR for the first of 3 successive TE and TM wave modes. The significant impact in lowering resonant frequencies for the TE and TM wave modes are shown by the anisotropic permittivity in ρ-and z-directions, respectively. The anisotropic permittivities are able to reduce the resonant frequencies of conventional CDR up to 13.77%, 4.19%, and 5.99% for TE11, TE21, and TE01 wave modes, respectively and 43.07%, 35.98%, 34.86% for the TM01, TM11, and TM21 wave modes, respectively. These results can be applicable for wave mode selection. The anisotropic permittivity in -direction has no effect in lowering the TE and TM wave mode resonant frequencies.

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Section: Theoretical Analysis Of Resonant Frequency For Anisotropic Amentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Theoretical Analysis of Resonant Frequency for Anisotropic Artificial Circular Dielectric Resonator Encapsulated in Waveguide

Ludiyati¹,

Suksmono²,

Munir³

2017

ijeei

Self Cite

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show abstract

“…As a result, the Q ‐factor and resonant frequency changes depending on the sample properties based on the resonant perturbation technique. Conventionally, several type of sensors employed to characterize the properties of material are such as dielectric, coaxial probe, and waveguide cavity resonator sensor . Their advantages include high Q ‐factors and sensitivity, hence resulting in higher measurement accuracy in wide range of applications.…”

Section: Introductionmentioning

confidence: 99%

Microfluidic biochemical sensor based on circular SIW‐DMS approach for dielectric characterization application

Bahar

Zakaria

Arshad

et al. 2019

Int J RF Microw Comput Aided Eng

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This work proposes an advancement of microwave planar resonator sensor with high sensitivity for microfluidic dielectric characterization. The physical design was employed based on circular substrate integrated waveguide (CSIW) with an integration of defected microstrip structure (DMS). This approach can be applied to accelerate the dielectric detection, structure miniaturization and material differentiation. The presented sensor operates based on variations in the dielectric properties of solvents in the vicinity of a planar open‐ended microstrip resonator device. Further analysis in volume and concentration were performed to validate the reliability of the sensor. Validation and functionality of the sensor were investigated by experimental and results comparison. A mathematical model was developed to determine the dielectric constant and the loss tangent of the microfluidic samples. The average error detection has a lower percentage value of 0.11% by comparison to the commercial and ideal dielectric properties of the aqueous samples. The maximum relative error detection, ±0.37% implied better accuracy compared to the existing resonator sensors with more than 400 of the Q‐factor. The proposed CSIW‐DMS sensor was found to give higher accuracy and detection response; besides easier to fabricate, and compatible for integration with other electronic components in an RF sensor for variety of applications.

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Characteristic of Circular Patch Antennas Using Open and Close Metal Rings on Artificial Dielectric Materials

Ludiyati

Gani

Hariyanto

2022

2022 International Conference on Radar, Antenna, Microwave, Electronics, and Telecommunications (ICRAMET)

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FDTD method for property analysis of waveguide loaded artificial circular dielectric resonator with anisotropic permittivity

Cited by 5 publications

References 11 publications

Theoretical Analysis of Resonant Frequency for Anisotropic Artificial Circular Dielectric Resonator Encapsulated in Waveguide

Theoretical Analysis of Resonant Frequency for Anisotropic Artificial Circular Dielectric Resonator Encapsulated in Waveguide

Microfluidic biochemical sensor based on circular SIW‐DMS approach for dielectric characterization application

Characteristic of Circular Patch Antennas Using Open and Close Metal Rings on Artificial Dielectric Materials

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