On-chip mm-wave spherical dielectric resonator bandpass filter

Cuenca, Daniel Lopez; Alavi, Golzar; Hesselbarth, Jan

doi:10.1109/mwsym.2017.8058896

Cited by 15 publications

(8 citation statements)

References 15 publications

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“…This translates to an unloaded Q-factor of ∼750. This value carries some uncertainty by the underlying measurements, but relates well to the loss tangent of 0.002 and to data of similar resonators around 100 GHz [14].…”

Section: Spherical Dielectric Resonator On Planar Circuitsupporting

confidence: 66%

“…The fundamental transverse magnetic resonance mode of a dielectric sphere in free space is E101. According to Mie's theory [15], the resonance frequency of this E101 mode for an alumina sphere (ε r = 10.15 [14]) of diameter 1 mm is 128.6 GHz. When the dielectric sphere is implemented as an on-board resonator, as described in section "Spherical dielectric resonator on planar circuit", a hybrid version of the E101 mode is excited which resonates at 103.5 GHz.…”

Section: W-band Tunable Two-resonator Filtermentioning

confidence: 99%

“…The key building block of the proposed filters is a spherical dielectric resonator coupled to a microstrip feed structure. The sphere locates precisely and self-aligns by a shallow crate etched into the microstrip board dielectric [14]. The sphere could be glued into the crate where the crate would prevent the glue from dispersing.…”

Section: Spherical Dielectric Resonator On Planar Circuitmentioning

confidence: 99%

“…On-chip mounted spherical dielectric resonators and filters operating at frequencies up to 110 GHz presented in [14] show very high Q-factor together with a practically feasible assembly technique. The work presented in the following extends this approach: a single resonator is characterized at 170 GHz (section "Spherical dielectric resonator on planar circuit"), a 3-resonator band-pass for 170 GHz is presented (section "G-band three-resonator filter"), and a mechanically tunable filter operating around 100 GHz is described (section "W-band tunable two-resonator filter").…”

Section: Introductionmentioning

confidence: 99%

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Low-loss and tunable millimeter-wave filters using spherical dielectric resonators

Dey¹,

Marin²,

Hesselbarth³

2020

Int. J. Microw. Wireless Technol.

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Millimeter-wave band-pass filters using spherical dielectric resonators are presented. The dielectric spheres are sandwiched between metal plates and are excited by a simple microstrip line structure on a thin-film circuit board. As such, these filters could also be implemented in the back-end-of-line layers of an integrated circuit. A single resonator, based on a diameter 0.6 mm alumina ceramic sphere, is shown to resonate with high unloaded Q-factor of 750 at 170 GHz. A three-sphere band-pass filter is measured showing <5 dB insertion loss and 0.4% bandwidth at 170 GHz. A concept for mechanically tuning of a two-sphere band-pass filter is demonstrated for a filter operating around 105 GHz. The measured filter shows approximately 5 dB insertion loss and <0.5% bandwidth and its passband can be varied over 3 GHz of frequency, or 3%. Technological challenges are discussed.

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Section: Spherical Dielectric Resonator On Planar Circuitsupporting

confidence: 66%

Section: W-band Tunable Two-resonator Filtermentioning

confidence: 99%

Section: Spherical Dielectric Resonator On Planar Circuitmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Low-loss and tunable millimeter-wave filters using spherical dielectric resonators

Dey¹,

Marin²,

Hesselbarth³

2020

Int. J. Microw. Wireless Technol.

Self Cite

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“…Разом з тим, порівняно з мікросмужковими структурами, ДР мають набагато більш високі значення власних добротностей, які у ряді випадків істотно перевищують значення, реалізовані і в порожнистих металевих резонаторах [1], [2]. Діелектричні резонатори широко застосовуються для створення фільтрів [3], генераторів [4], антен [5].…”

Section: вступunclassified

One-Dimensional Non-Uniform Dielectric Structure as Tunable Resonator

Voloshyn¹,

Chernov²,

Golubeva³

et al. 2019

Mìkrosist. elektron. akust.

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Кафедра електронної інженерії ee.kpi.ua Національний технічний університет України «Київський політехнічний інститут імені Ігоря Сікорського» kpi.ua Київ, Україна Анотація-Строго розв'язано електродинамічну задачу для неоднорідної діелектричної структури, яка складається з двох нескінченних пластин, розділених діелектричним прошарком з відмінною діелектричною проникністю. Задачу зведено до нелінійної задачі на власні числа та вектори. Власні числа визначають резонансні частоти, а вектори-власне електромагнітне поле резонансної структури. Показано, що резонансна частота нижчого типу коливань має високу чутливість до зміни повітряного прошарку між діелектричними пластинами. Встановлено зв'язок характеристик перелаштування з геометричними та електрофізичними параметрами пластин. Показано, що перелаштування резонансної частоти відбувається без погіршення власної добротності резонатора. Продемонстровано, що встановлені закономірності для одновимірної неоднорідної структури справедливі для неоднорідних діелектричних резонаторів циліндричної форми. Ключові слова-діелектричний резонатор; ефективна діелектрична проникність; мікромеханічне перелаштування; електромагнітне поле; добротність.

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Wideband performance limitations of the C-FDTD in the discretization impoverishment of a curved surface

Fortes

Gonçalves

2020

COMPEL

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Purpose This paper aims to explore the limitations of the conformal finite difference time-domain method (C-FDTD or Dey–Mittra) when modeling perfect electric conducting (PEC) and lossless dielectric curved surfaces in coarse meshes. The C-FDTD is a widely known approach to reduce error of curved surfaces in the FDTD method. However, its performance limitations are not broadly described in the literature, which are explored as a novelty in this paper. Design/methodology/approach This paper explores the C-FDTD method applied on field scattering simulations of two curved surfaces, a dielectric and a PEC sphere, through the frequency range from 0.8 to 10 GHz. For each sphere, the mesh was progressively impoverished to evaluate the accuracy drop and performance limitations of the C-FDTD with the mesh impoverishment, along with the wideband frequency range described. Findings This paper shows and quantifies the C-FDTD method’s accuracy drops as the mesh is impoverished, reducing C-FDTD’s performance. It is also shown how the performance drops differently according to the frequency of interest. Practical implications With this study, coarse meshes, with smaller execution time and reduced memory usage, can be further explored reliably accounting the desired accuracy, enabling a better trade-off between accuracy and computational effort. Originality/value This paper quantifies the limitations of the C-FDTD in coarse meshes in a wideband manner, which brings a broader and newer insight upon C-FDTD’s limitations in coarse meshes or relatively small objects in electromagnetic simulation.

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On-chip mm-wave spherical dielectric resonator bandpass filter

Cited by 15 publications

References 15 publications

Low-loss and tunable millimeter-wave filters using spherical dielectric resonators

Low-loss and tunable millimeter-wave filters using spherical dielectric resonators

One-Dimensional Non-Uniform Dielectric Structure as Tunable Resonator

Wideband performance limitations of the C-FDTD in the discretization impoverishment of a curved surface

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