Methodology for performance analysis of randomly-spread CDMA systems over multipath fading channels via crosscorrelation matrix non-asymptotic average eigenvalue densities

Ertug, Ozgur; Baykal, Buyurman; Unal, B.S.

doi:10.1049/el:20030689

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“…The dielectric loss also follows a similar trend and is rather high at low frequency and falls quickly with increasing frequency. It may be due to the inability of the dipoles to follow the high frequency of the applied field. , The value of tan δ varies from 0.2 to 2.7 × 10 –4 in the measured frequency range. The low dielectric loss value of CMO at high frequency is more evident from the inset figure of Figure .…”

Section: Resultsmentioning

confidence: 94%

Glass-Free CuMoO₄ Ceramic with Excellent Dielectric and Thermal Properties for Ultralow Temperature Cofired Ceramic Applications

Joseph

Varghese

Siponkoski

et al. 2016

ACS Sustainable Chem. Eng.

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A new glass-free low temperature sinterable CuMoO 4 ceramic was prepared by a solid state ceramic route. The structural, microstructural, electron dispersive spectrum, and X-ray photoelectron spectroscopy analysis revealed the quality of the material synthesized. The CuMoO 4 ceramic sintered at 650 °C exhibits densification of 96% and low coefficient of thermal expansion (CTE) of 4.6 ppm/°C in the temperature range of 25−500 °C. It has relative permittivity (ε r ) of 7.9, quality factor (Qf) of 53 000 GHz, and temperature coefficient of resonant frequency (τ f ) of −36 ppm/°C (25−85 °C) at 12.7 GHz. The sintered ceramic also shows ε r of 11 and low dielectric loss (tan δ) of 2.7 × 10 −4 at the frequency of 1 MHz. The full width half-maximum (fwhm) of A 1g Raman mode of CuMoO 4 ceramic at different sintering temperatures correlate well with the Qf values. The low sintering temperature, low relative permittivity, high-quality factor, and matching coefficient of thermal expansion to that of Si make CuMoO 4 a suitable candidate for ultralow temperature cofired ceramic (ULTCC) applications.

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Section: Resultsmentioning

confidence: 94%

Glass-Free CuMoO₄ Ceramic with Excellent Dielectric and Thermal Properties for Ultralow Temperature Cofired Ceramic Applications

Joseph

Varghese

Siponkoski

et al. 2016

ACS Sustainable Chem. Eng.

View full text Add to dashboard Cite

show abstract

Methodology for performance analysis of randomly-spread CDMA systems over multipath fading channels via crosscorrelation matrix non-asymptotic average eigenvalue densities

Cited by 1 publication

References 2 publications

Glass-Free CuMoO₄ Ceramic with Excellent Dielectric and Thermal Properties for Ultralow Temperature Cofired Ceramic Applications

Glass-Free CuMoO₄ Ceramic with Excellent Dielectric and Thermal Properties for Ultralow Temperature Cofired Ceramic Applications

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Methodology for performance analysis of randomly-spread CDMA systems over multipath fading channels via crosscorrelation matrix non-asymptotic average eigenvalue densities

Cited by 1 publication

References 2 publications

Glass-Free CuMoO4 Ceramic with Excellent Dielectric and Thermal Properties for Ultralow Temperature Cofired Ceramic Applications

Glass-Free CuMoO4 Ceramic with Excellent Dielectric and Thermal Properties for Ultralow Temperature Cofired Ceramic Applications

Contact Info

Product

Resources

About

Glass-Free CuMoO₄ Ceramic with Excellent Dielectric and Thermal Properties for Ultralow Temperature Cofired Ceramic Applications

Glass-Free CuMoO₄ Ceramic with Excellent Dielectric and Thermal Properties for Ultralow Temperature Cofired Ceramic Applications