Open resonators for low dielectric loss measurements

Vlasov, S. N.; Koposova, E. V.; Myasnikova, S.E.; Паршин, В.В.

doi:10.1134/1.1529948

Cited by 8 publications

(11 citation statements)

References 5 publications

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“…Therefore, we apply a new technique for measuring the loss tangent without using information on the Q-factor of the empty cavity. Namely, we use such locations of the specimen for which its planes are at maxima and minima of the standing-wave field in the cavity [18]. Such a method significantly simplifies measurements at high temperatures, which, as a result, increases measurement accuracy and reliability.…”

Section: Resultsmentioning

confidence: 98%

“…Studying dielectric losses in polycrystalline diamonds grown by chemical vapor deposition (CVD) has become very topical in the millimeter-wave range because of considerable progress in the growth technology and the corresponding applications of this previously "exotic" material in modern engineering [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18]. The grown diamond disks have a number of remarkable electrical and mechanical properties:…”

Section: Introductionmentioning

confidence: 99%

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Dielectric losses in CVD diamonds in the millimeter-wave range at temperatures 300?900 K

Паршин

Garin

Myasnikova

et al. 2004

Radiophys Quantum Electron

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UDC 538.955+538.956We study losses in different CVD diamonds in the frequency range 50-210 GHz at temperatures 300-900 K by using a high-Q open Fabry-Perot cavity. It is found that the effective activation energies determining a sharp increase in losses at high temperatures are distributed in the range 0.4-0.8 eV. We propose a formula which relates the frequency and temperature dependences of losses for different CVD-diamond specimens in the first approximation. Suggestions on the nature of these losses are put forward.

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Section: Resultsmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Dielectric losses in CVD diamonds in the millimeter-wave range at temperatures 300?900 K

Паршин

Garin

Myasnikova

et al. 2004

Radiophys Quantum Electron

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“…These basic equations are adequate for analysis of most experimental data, however detailed theoretical analysis [7,8] reveals small correction terms which have been included in the final data analysis.…”

Section: Resonator With Samplementioning

confidence: 99%

“…The resonator used in this project is a symmetrical interferometer, consisting of a pair of brass mirrors, coated with silver, and separated by slightly less than two radii. Extensive theoretical analysis has been done for the fields in such a structure [3][4][5][6][7][8]. From these analyses, one can express the loss tangent of a sample in terms of the loaded and unloaded Q of the resonator.…”

Section: Theorymentioning

confidence: 99%

Measurement of Dielectric Properties for Low-Loss Materials at Millimeter Wavelengths

Jones

Dutta

Gao

et al. 2011

J Infrared Milli Terahz Waves

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We describe here a system for accurate measurement of the dielectric properties of very low-loss materials in the 130 to 170 GHz frequency range. This system utilizes an open resonator with a quality factor ∼1×10 6 . Resonance curves for this resonator are acquired with a commercial spectrum analyzer equipped with an external millimeter-wave harmonic mixer. The excitation source is a backward-wave oscillator locked to the spectrum analyzer local oscillator via a digital phase-locked loop. This system permits rapid and accurate measurement of resonance curve line widths, permitting determination of loss tangents down to the 10 -6 range. Results are reported for silicon carbide (SiC), CVD diamond, sapphire, and quartz.

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“…Owing to a small radiation loss, "whisperinggallery" modes of the ORC like an open dielectric resonator are appropriate for studying dielectrics with minimal absorption [2]. Some theoretical models have been sufficiently developed for dielectric parameter assessment using a spherical-mirror open resonator (OR) with a plane-parallel dielectric layer placed normal to the OR axis [3]. Yet in practice, a long cylindrical object, homogeneous or stratified (e.g., optical fiber), is often the matter to deal with, including the needs of continuous parameter control during the technological process.…”

Section: Introductionmentioning

confidence: 99%

An Open Resonance Cell for Millimeter Wave Dielectrometer Applications

Miroshnichenko¹,

Melezhik²,

Senkevich³

2008

PIER M

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Abstract-An open resonance cell (ORC) with finite-length cylindrical mirrors is suggested for making absolute measurements of complex permittivity in the case of stretched cylindrical specimens or liquid dielectrics in cylindrical containers. For H-polarization, we report ORC features simulated in rigorous electromagnetic terms using a twodimensional (2-D) model of an open resonator with cylindrical mirrors and a dielectric test rod inserted. On this basis, the ORC laboratory prototype with finite-length mirrors was built. The measurements of dielectric test rods were performed in the 10 mm wave band. In the studies of dielectric materials, E-polarized modes of the cylindricalmirror ORC demonstrate some specific features, which are discussed, too.

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Open resonators for low dielectric loss measurements

Cited by 8 publications

References 5 publications

Dielectric losses in CVD diamonds in the millimeter-wave range at temperatures 300?900 K

Dielectric losses in CVD diamonds in the millimeter-wave range at temperatures 300?900 K

Measurement of Dielectric Properties for Low-Loss Materials at Millimeter Wavelengths

An Open Resonance Cell for Millimeter Wave Dielectrometer Applications

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