A strip line ring resonator method for determination of dielectric properties of printed circuit board material in function of frequency

2004 ◽  
Author(s):  
J.-M. Heinola ◽  
K.-P. Latti ◽  
J.-P. Strom ◽  
M. Kettunen ◽  
P. Silventoinen
Keyword(s):  
Dielectric Properties ◽  
Printed Circuit Board ◽  
Ring Resonator ◽  
Circuit Board ◽  
Strip Line ◽  
Printed Circuit ◽  
Board Material ◽  
Resonator Method

Estimation Of Complex Permittivity Of Printed Circuit Board Material Using Waveguide Measurements

1996 ◽  
Vol 430 ◽  
Author(s):  
C. J. Reddy ◽  
M. D. Deshpande ◽  
G. A. Hanidu
Keyword(s):  
Dielectric Constant ◽  
Reflection Coefficient ◽  
Complex Permittivity ◽  
Printed Circuit Board ◽  
Circuit Board ◽  
The Finite Element Method ◽  
Printed Circuit ◽  
X Band ◽  
Board Material ◽  
Raphson Method

AbstractA simple waveguide measurement technique is presented to determine the complex permittivity of printed circuit board material. The printed circuit board with metal coating removed from both sides and cut into size which is the same as the cross section of the waveguide is loaded in a short X-band rectangular waveguide. Using a network analyzer, the reflection coefficient of the shorted waveguide(loaded with the sample) is measured. Using the Finite Element Method(FEM) the exact reflection coefficient of the shorted wavguide(loaded with the sample) is determined as a function of dielectric constant. Matching the measured value of the reflection coefficient with the reflection value calculated using FEM and utilizing Newton-Raphson Method, an estimate of the dielectric constant of a printed circuit board material is obtained. A comparison of estimated values of permittivity constant obtained using the present approach with the available data.

Dielectric and Hot/Wet Properties of Methyl-Silsesquioxane/Cyanate Ester Resin Hybrid Materials

2011 ◽  
Vol 216 ◽  
pp. 630-634
Author(s):  
Zeng Ping Zhang ◽  
Yong Wen ◽  
Hong Zhao Du ◽  
Jian Zhong Pei ◽  
Shuan Fa Chen
Keyword(s):  
Dielectric Constant ◽  
Dielectric Properties ◽  
Dielectric Loss ◽  
High Performance ◽  
Printed Circuit Board ◽  
Cyanate Ester ◽  
Circuit Board ◽  
Printed Circuit ◽  
Cyanate Ester Resin ◽  
Properties Of Materials

Methylsilsesquioxane (Me-SSQ) was incorporated into cyanate ester resin (CE) to obtain organic-inorganic hybrids with better dielectric properties in this study. First, methyltriethoxysilane was hydrolyzed and condensed to synthesize Me-SSQ. Then several Me-SSQ/CE hybrids containing different contents of Me-SSQ were prepared. The effect of Me-SSQ content on the dielectric and hot/wet properties of materials was investigated. Results showed that the Me-SSQ/CE hybrid containing 20wt% of Me-SSQ shows a dielectric constant of 2.78, which is much lower than the pure CE resin. At the same time, the dielectric loss of the Me-SSQ/CE hybrids was slightly increased (tanδ<0.006). It indicates that Me-SSQ/CE hybrid is a promising matrix materials for high-performance printed circuit board (PCB).

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