Resonant frequency and quality factors of a silver-coated λ/4 dielectric waveguide resonator

Kundu, Arun Chandra; Awai, Ikuo

doi:10.1109/22.704955

Cited by 16 publications

(4 citation statements)

References 6 publications

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“…In these cases, to enhance the features above mentioned, low-permittivity (ε ∼10) dielectrics are used, and one side of the RDR is covered by a conductor while all the other sides are radiative (open-ended faces, OEFs). Microwave filters also exist, based upon RDRs [11]. In this case, a partial or total conducting coating is applied to some of the faces of the RDR [12].…”

Section: Requirements For the Rectangular Dielectric Resonatormentioning

confidence: 99%

“…We turn to the problem of calculating the quality factor, Q, and the resonant frequency, f res , of the RDR with two OEFs (the structure depicted in figure 1). A simplified analytical equation for the resonant frequency of a TE mnp DR (isotropic dielectric) entirely metal-coated was deduced in [11,12]:…”

Section: Design Of the Prototype Rdrmentioning

confidence: 99%

“…A first, important step in the validation of the design relies on numerical simulations. We performed extensive simulations by CST MWS R of the to-be-realized structure, and compared the results to the analytical models discussed, e.g., in [11,12]. The simulations were successively refined in order to approximate by steps the real configuration, by including (a) a (cylindrical) Cu enclosure, necessary to reduce radiation losses, and (b) the anisotropy of the chosen dielectric (rutile).…”

Section: Design Of the Prototype Rdrmentioning

confidence: 99%

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A rectangular dielectric resonator for measurements of the anisotropic microwave properties in planar conductors

Torokhtii

Pompeo

Silva

2013

Meas. Sci. Technol.

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We designed, realized and tested a TE011-mode rectangular, high-permittivity, dielectric resonator, in order to obtain a measuring device capable of applying straight microwave currents to conductive samples. We characterized the prototype by means of extensive simulations that we compared to experimental results. Finally, we tested the device on a strongly anisotropic graphite sample. We found that the rotation of the sample produced significant changes in the response of the device. We conclude that the proposed rectangular dielectric resonator can be used as a device to detect the anisotropy of conductive samples.

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Section: Requirements For the Rectangular Dielectric Resonatormentioning

confidence: 99%

Section: Design Of the Prototype Rdrmentioning

confidence: 99%

Section: Design Of the Prototype Rdrmentioning

confidence: 99%

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A rectangular dielectric resonator for measurements of the anisotropic microwave properties in planar conductors

Torokhtii

Pompeo

Silva

2013

Meas. Sci. Technol.

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“…The study of waveguide and electromagnetic wave propagation has been studied in [14,15]. Frequency resonant for silver is showed [16,17]. The relative permeability and relative permittivity for some materials are shown in [18].…”

Section: Introductionmentioning

confidence: 99%

Influence of Diamond and Silver as Cavity Resonator Wall Materials on Resonant Frequency

Abo-Seida

Eldabe

Naby

et al. 2023

Journal of Communication Sciences and Information Technology

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In this paper, the effect of diamond material and silver material as the cavity resonator walls on the resonant frequency has been analyzed. A closed rectangular waveguide can be used as a resonator with a source circuit inside it. The walls of the cavity are made from materials that adequate the dielectric and conductive losses. It is found that the rectangular waveguide frequency resonance decreases with increasing the relative permeability and relative permittivity of diamond and silver. The effect of magnetic susceptibility on the frequency resonant ℓ can be found based on relative permeability where = − 1.

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Equivalent-circuit representation and explanation of attenuation poles of a dual-mode dielectric-resonator bandpass filter

Awai

Kundu

Yamashita

1998

IEEE Trans. Microwave Theory Techn.

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of the effects of a resistively coated upper dielectric layer on the propagation characteristics of hybrid modes in a waveguide shielded microstrip using method of lines," IEEE Trans. . L. Foo and P. P. Silvester, "Boundary-marching method for discontinuity analysis in waveguides of arbitrary cross section," IEEE Trans.Abstract-A =4 rectangular-waveguide resonator of square cross section filled with high-permittivity ceramics has two degenerate lowest modes. A dual-mode bandpass filter based on this structure is studied, focusing on the attenuation poles at both sides of the passband. It is described how to achieve capacitive and inductive coupling between dominant modes of a resonator of square cross section. An equivalentcircuit model is proposed, including mode coupling, excitation from the external circuit, and direct coupling between input/output (I/O) electrodes. Equivalent-circuit parameters are measured and their validity is verified using simulated result. Appearance and annihilation of the attenuation poles are successfully explained by the proposed model, and attenuation pole frequencies are controlled by shifting the I/O electrode transversely.

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Resonant frequency and quality factors of a silver-coated λ/4 dielectric waveguide resonator

Cited by 16 publications

References 6 publications

A rectangular dielectric resonator for measurements of the anisotropic microwave properties in planar conductors

A rectangular dielectric resonator for measurements of the anisotropic microwave properties in planar conductors

Influence of Diamond and Silver as Cavity Resonator Wall Materials on Resonant Frequency

Equivalent-circuit representation and explanation of attenuation poles of a dual-mode dielectric-resonator bandpass filter

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