Method for de-embedding device measurements
AssigneeTeledyne LeCroy, Inc.
InventorsPeter J. Pupalaikis, Kaviyesh Doshi
Life of this patent
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Abstract
A method is provided for de-embedding measurements from a given network containing mixtures of devices with known and unknown S-parameters given a description of the network and the known S-parameters of the overall system.
Claims18
A method for de-embedding at least one device whose S-parameters are unknown and including at least one unknown device port from a system having known system S-parameters at at least one system port, the system comprising, in addition to the at least one device whose S-parameters are unknown, at least one device whose S-parameters are known and including at least one known device port, at least one connection between the at least one system port and the at least one known device port;
- comprising the steps of:
- describing the system in accordance with a system description, the system description further comprising a list of at least one or more devices, an indicator of a number of device ports and associated S-parameters if known, one or more system ports, and one or more nodes indicating a relationship between one or more of the one or more system ports and one or more device ports;
- storing the system description to a first non-transient computer readable storage medium;
- converting the system description and the known S-parameters of the at least one device whose S-parameters are known to a system characteristics matrix, the system characteristics matrix describing the linear relationship between all determined nodal wave values both incident on and reflected from one or more of the at least one or more device ports and stimuli in the system associated with one or more of the one or more system ports;
- converting the system characteristics matrix and the known system S-parameters to determine the S-parameters of the at least one device whose S-parameters are unknown;
- and
- storing the determined s-parameters to a second non-transient computer readable storage medium.
A computer program stored on a non-transitory computer readable medium, and including instructions for de-embedding at least one device whose S-parameters are unknown and including at least one unknown device port from a system having known system S-parameters at least one system port, the system comprising, in addition to the at least one device whose S-parameters are unknown, at least one device whose S-parameters are known and including at least one known device port, at least one connection between the at least one system port and the at least one known device port;
- the instructions instructing a processing element to perform the steps of:
- describing the system in accordance with a system description, the system description further comprising a list of at least one or more devices, an indicator of a number of device ports and associated S-parameters if known, one or more system ports, and one or more nodes indicating a relationship between one or more of the one or more system ports and one or more device ports;
- converting the system description and the known S-parameters of the at least one device whose S-parameters are known to a system characteristics matrix, the system characteristics matrix describing the linear relationship between all determined nodal wave values both incident on and reflected from one or more of the at least one or more device ports and stimuli in the system associated with one or more of the one or more system ports;
- and
- converting the system characteristics matrix and the known system S-parameters to the S-parameters of the at least one device whose S-parameters are unknown.
Dependencies are inferred from the claim text.