Technical Memorandum. Novel method of measuring dielectric properties at 100 ghz using a groove-guide resonator

Choi, Yat Man

doi:10.1049/ip-h-2.1988.0030

Cited by 3 publications

(7 citation statements)

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“…constant with a precision of 60.5 mm, and taking into account the groove-guide oscillator frequency stability of 65 MHz, the resulting measurement error of the permittivity De r is 60. 13. This corresponds to a relative error of 68%.…”

Section: Application 2: Permittivity Measurementmentioning

confidence: 97%

“…The first type of groove guide resonator was realized by Choi [13]. Metallic plates at both ends serve as short circuits.…”

Section: The Groove Guide Resonatormentioning

confidence: 99%

“…For the example shown here, moving the plate Figure 10. Permittivity measurement after Choi [13]-top plate removed.…”

Section: Application 1: Distance Metermentioning

confidence: 99%

“…Since the two plates of the groove guide oscillator are separated from each other, materials can easily be inserted between the two plates. In a technical memorandum, Choi [13] investigated a permittivity measurement system operating at 100 GHz. As shown in Figure 10, a groove guide shorted at both ends was driven with a microwave signal of fixed frequency.…”

Section: Application 2: Permittivity Measurementmentioning

confidence: 99%

“…This corresponds to a relative error of 68%. The most important technical features of the permittivity measurement system are summarized in Table 3, where the examples presented here are compared to results from the aforementioned systems in [13] and [28], together with features of a patented commercial measurement system described in [29].…”

Section: Application 2: Permittivity Measurementmentioning

confidence: 99%

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The Groove-Guide Oscillator

Bechteler

2011

IEEE Microwave

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Section: Application 2: Permittivity Measurementmentioning

confidence: 97%

“…The first type of groove guide resonator was realized by Choi [13]. Metallic plates at both ends serve as short circuits.…”

Section: The Groove Guide Resonatormentioning

confidence: 99%

“…For the example shown here, moving the plate Figure 10. Permittivity measurement after Choi [13]-top plate removed.…”

Section: Application 1: Distance Metermentioning

confidence: 99%

Section: Application 2: Permittivity Measurementmentioning

confidence: 99%

Section: Application 2: Permittivity Measurementmentioning

confidence: 99%

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The Groove-Guide Oscillator

Bechteler

2011

IEEE Microwave

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Design of coupling structures for groove guide resonators

Bechteler¹,

Kustepeli

Bechteler

2008

Micro & Optical Tech Letters

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Permittivity measurement of disk and annular dielectric samples using coaxial transmission line fixtures. part I: theory and formulation

Kehn

Shafai

Noghanian

2009

Can. J. Electr. Comput. Eng.

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One way of measuring the permittivity of circularly shaped dielectric samples is to measure the S-parameters of a two-port coaxial transmission line fixture into which the samples are placed. Among the sample forms that can be fitted into coaxial waveguides are (1) circular disks and (2) annular rings. The former type is sandwiched between two disjointed inner conductors of the coaxial line, whereas the latter dielectric form is snug-fitted to become the insulation layer of an intermediate coaxial section. Each type of sample requires a different coaxial configuration; this work studies both fixtures. The investigation of the first type is based on a previously studied technique that treats the sandwiched circular disk as a parallel-plate capacitor. Because of inaccuracies in the original form of that method, a modified version that offers improved accuracy is devised here. In addition, a new, independently developed technique for accurately characterizing dielectrics of the second form (annular-ring samples) using quadratic curve fitting is proposed. The experimental fixture, comprising a connected series of coaxial waveguide sections, is numerically treated with the method of moments and mode-matching technique. Details of the theoretical groundwork are presented in this paper, which constitutes the first of two parts of this work. Part II, also appearing in this issue, describes the measurement technique in detail and presents simulation results of the experimental procedure based on the formulation presented herein. In addition, the method that treats circular disks is also investigated in Part II and is used to make comparative performance studies.Une méthode de mesure de la permittivité d'échantillons diélectriques de forme circulaire est de mesurer les paramètres S d'un gabarit de deux ports d'une ligne de transport coaxiale dans lequel leséchantillons sont placés. Leséchantillons qui peuventêtre montés en guide d'ondes coaxial se présentent sous deux formes: (1) disques circulaires et (2) anneaux annulaires. Le premier type est coincé entre deux conducteurs internes disjoints de la ligne coaxiale, tandis que le second diélectrique est ajusté de façonà devenir la couche d'isolation d'un tronçon coaxial intermédiaire. Chaque type d'échantillon exige une configuration coaxiale différente. Ce travailétudie les deux configurations. L'analyse réalisée sur le premier type est basée sur une technique déjà etudiée qui traite le disque circulaire mis en sandwich comme un condensateurà plaques parallèles. En raison d'inexactitudes dans la forme originale de cette méthode, une version modifiée qui offre une meilleure précision est conçue. En outre, une nouvelle technique développée indépendamment pour la bonne caractérisation des diélectriques de la deuxième forme (échantillons d'anneaux annulaires)à l'aide d'ajustement des courbes quadratiques est proposée. L'expérimentation, comprenant un ensemble de guides d'ondes coaxials, est traitée numériquement par la méthode des moments et la méthode de correspondance des mo...

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Technical Memorandum. Novel method of measuring dielectric properties at 100 ghz using a groove-guide resonator

Cited by 3 publications

References 0 publications

The Groove-Guide Oscillator

The Groove-Guide Oscillator

Design of coupling structures for groove guide resonators

Permittivity measurement of disk and annular dielectric samples using coaxial transmission line fixtures. part I: theory and formulation

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