Date of Award
Open Access Thesis
Paul G. Huray
Given that data rates of computers is on the rise and optimization of bus speeds continue to be of importance in improving the system performance, different models for a prediction of the impact of the surface roughness of copper foil have been developed and incorporated into different software’s and applications used by design engineers.
With different models known to have been created for characterization of electrodeposited copper, they have been mostly affected by the need for higher frequencies as they are mostly useful for prediction at frequency of a few GHz. With the introduction of a new model (known as Huray Model which has helped with the prediction of losses of up to 50GHz and well improving towards 100GHz) which involves including surface features of electrodeposited copper foil and also making use of workable assumptions for estimating signal power loss. This model has been widely incorporated by several organizations into electromagnetic field simulators used commercially in industries today.
With all this said, it is still difficult to obtain accurately some of the parameters needed in estimation of the conductor losses which involves establishing a more standard approach of characterizing the electrodeposited copper foil in directly implementing the Huray Model for use in high speed circuit.
The main purpose of this thesis is therefore to obtain accurately these parameters, compare how the parameters differ on different copper foils, estimate the surface power loss of each copper foils compared, estimate the impact of volume on this losses and include dipole parameters in the Huray model over a higher frequency range (say 100THz).
This thesis is set to explain improved ways of obtaining parameters used in the “snowball” model for characterization of electrodeposited copper foil and performance of different copper foils using the snowball model. It also estimates the impact of absorbed and scattered parameters in surface power loss and also reveals some irregularities, difficulties and future recommendations.
Ojo, B. K.(2017). Physical Characterization of Electrodeposited PCB Copper Foil Surfaces. (Master's thesis). Retrieved from https://scholarcommons.sc.edu/etd/4071