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Full-Text Articles in Electrical and Computer Engineering
Have Your Cake And Eat It, Too: Engineering Measurements At Fabrication For Channel Design And Process Control, Donald Degroot, Brett Moreland, Eric Bogatin
Have Your Cake And Eat It, Too: Engineering Measurements At Fabrication For Channel Design And Process Control, Donald Degroot, Brett Moreland, Eric Bogatin
Faculty Publications
This paper demonstrates the acquisition of advanced circuit board performance parameters from breakaway test coupons measured right at the PCB fabricator. We show how to acquire S-parameter and TDR-based measurements up to 30 GHz using robust probes and test coupon fixtures. The measurements provide pass/fail tests for process control and they provide model parameters as feedback to improve channel design. By way of example, we demonstrate measurements of several representative test coupons, perform total loss tests, such as SET2DIL, and extract design parameters that can be used to improve EDA channel models. We also demonstrate measurement and tests of impedance …
Which One Is Better? Comparing Options To Describe Frequency Dependent Losses, Eric Bogatin, Don Degroot, Paul G. Huray, Yuriy Shlepnev
Which One Is Better? Comparing Options To Describe Frequency Dependent Losses, Eric Bogatin, Don Degroot, Paul G. Huray, Yuriy Shlepnev
Faculty Publications
In any channel operating at 2 Gbps and above, conductor and dielectric losses can dominate channel performance. These effects must be included in any accurate system simulation. The problem isn't that simulators don't do this; there are several choices in interconnect loss mathematical expressions and it's difficult to decide how to transform fab information into simulator input. There are different combinations of parameterized mathematical expressions for dielectric and conductor loss which are in popular use in the industry. Each works to some extent. This paper takes each mathematical expression, explains its origin, evaluates its predicted insertion loss magnitude and phase …