Media.Player

A method for identifying resonances in electronic systems

IP Title

Resonance scanning system and method for testing equipment for electromagnetic resonances

Detailed Technology Description

None

Supplementary Information

Inventor: Pommerenke, David J. | Huang, Wei | Shao, Peng | Xiao, Jiang
Priority Number: US8143903B2
IPC Current: G01R002704
US Class: 324633 | 324642
Assignee Applicant: The Curators of the University of Missourilumbia
Title: Resonance scanning system and method for testing equipment for electromagnetic resonances
Usefulness: Resonance scanning system and method for testing equipment for electromagnetic resonances
Summary: Resonance scanning system for a testing equipment e.g. integrated circuit, printed circuit board (PCB) and electronic module, for detecting electromagnetic resonance.
Novelty: Resonance scanning system for e.g. integrated circuit, has automatic scanning subsystem displacing probe of resonance detection subsystem to different testing locations of equipment to scan equipment with probe

Industry

Electronics

Sub Category

Circuit Design

Application Date

Jun 1, 2009

Application No.

8,143,903

Others

*Abstract

In physics, resonance is the tendency of a system to oscillate at maximum amplitude at certain frequencies, known as the system's resonance frequencies. At these frequencies, even small periodic energy exicting the resonance can produce large amplitude vibrations, because the system stores vibration energy. When damping is small, the resonance frequency is approximately equal to the natural frequency of the system.In electronic systems, various resonances occur for many reasons, like resonance or the die capacitance with the interconnect inductance, power plane resonances, resonances of traces on the PCB, cable resonance, board resonance, resonances between boards that are cable connected, and structural resonanaces of the enclosure. All of these resonances have in common that they worsen the electromagnetic compatibility performance of the system. At the resonance frequency they increase the coupling of electromegnetic waves in the vicinity of the electronic system with the lcal voltages and currents of the system. This can increase the amount of unitended RF emitted by the sytstem and it can make the system more susceptable to RF energy in the surrounding area, leading to RF immunity problems, etc.This application describes a method for identifying the resonance frequencies, the location of the resonances and the Quality factor of the resonances. Further the harmonic relationship between resonances of the same structure is identified.

*IP Issue Date

Mar 27, 2012

*IP Publication Date

Dec 3, 2009

*Principal Investigator

Name: David Pommerenke, Assoc Professor

Department:

Name: Wei Huang, Graduate, Elect Engr MS

Department:

Name: Peng Shao, Graduate - Masters, Elec Engr PhD

Department:

Country/Region

USA