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Isola Group: New Impedance and Power-Handling Software Tool Facilitates Fast Conversion to Isola's RF-Materials

2014-07-29 16:30:00
Ticker Giełda ISIC Kraj Miasto
U.S.A. Chandler

Free Calculator Expedites Modeling for PCB Designers Based on the Target

Impedance and Dielectric Properties

CHANDLER, Ariz., July 29, 2014 (GLOBE NEWSWIRE) -- Isola Group S.? r.l., a

market leader in engineered dielectric materials used to fabricate advanced

multilayer printed circuit boards (PCBs), today released a free Impedance and

Power-Handling Calculator that predicts the design attributes for microstrips

and striplines based on the design's target impedance and dielectric properties

of the company's RF, microwave and millimeter-wave laminate materials. This new

tool supports Isola's earlier announcement of a Design Review Service, in which

its technical staff will provide PCB fabricators and OEMs all of the

calculations, testing, characterizations and material recommendations needed to

convert to Isola's materials. This service is offered in the wake of the global

shortage of competitive RF substrates.

The dielectric properties calculated by this tool include the effect of

dielectric anisotropy, the difference when measured along different axes in a

material's dielectric constant and dissipation factor. Almost all substrates

have some degree of anisotropy, which is primarily driven by the reinforcements

used such as fillers or woven fabrics. The difference in dielectric constant is

not as significant for striplines, as the dielectric is homogenous and the

propagation occurs in the transverse electromagnetic (TEM) mode with the

magnetizing field ("H" plane) and the electric field ("E" plane) orthogonal to

each other. However, the difference in dielectric constant is significant in

microstrips where propagation occurs in a quasi-TEM mode and where there are

components of the field in both perpendicular and parallel planes. The measured

dielectric constant is therefore not accurate for modeling the microstrip, as

most measurements are carried out in the Z-direction and the X and Y

measurements are not readily available.

Isola's new software tool provides a design or an equivalent dielectric constant

to facilitate modeling for PCB designers to predict impedance and other design

attributes. The software computes changes in the effective dielectric constant

due to dispersion at higher frequencies. The software then computes the total

insertion loss - a measure of power lost through heat for power handling

calculations, including the dielectric loss, conductor loss, and the loss due to

the surface roughness. The main factors affecting the typical power-handling

capability of a material are its thermal conductivity, the maximum operating

temperature, and the total insertion loss.

The Impedance and Power-Handling Calculator is available for download at

https://isodesign.isola-group.com/phi-calculator/. A tutorial for the calculator

can be viewed at http://www.isola-group.com/news/video-impedance-and-power-


To inquire about Isola's 24-hour design review service, please contact

technical-support@isola-group.com or visit http://www.isola-

group.com/conversion-service. For more information about the company's RF

materials, please visit http://www.isola-group.com/product-category/broadband-


About Isola

Isola Group S.? r.l., headquartered in Chandler, Arizona, is a global material

sciences company focused on designing, developing, manufacturing, and marketing

copper-clad laminates and dielectric prepregs used to fabricate advanced

multilayer printed circuit boards. The company's high-performance materials are

used in sophisticated electronic applications in the communications

infrastructure, computing/networking, military, medical, aerospace and

automotive industries. For more information, visit our website at


CONTACT: Editorial Contact:

Tiffany C. Zinn

Global Marketing Communications Manager

Isola Group



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Source: Isola Group via GlobeNewswire