Invention Grant
US08903324B1 Passive intermodulation (PIM) distance-to-fault analyzer and method to resolve distance-to-fault within a constrained receive band
有权
被动互调（PIM）距离故障分析仪和解决受限接收频段内的故障距离的方法
- Patent Title: Passive intermodulation (PIM) distance-to-fault analyzer and method to resolve distance-to-fault within a constrained receive band
- Patent Title (中): 被动互调（PIM）距离故障分析仪和解决受限接收频段内的故障距离的方法
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Application No.: US13625634Application Date: 2012-09-24
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Publication No.: US08903324B1Publication Date: 2014-12-02
- Inventor: Donald Anthony Bradley
- Applicant: Anritsu Company
- Applicant Address: US CA Morgan Hill
- Assignee: Anritsu Company
- Current Assignee: Anritsu Company
- Current Assignee Address: US CA Morgan Hill
- Agency: Meyer IP Law Group
- Main IPC: H04B17/00
- IPC: H04B17/00
Abstract:
An embodiment of a method in accordance with the present invention for determining a distance to a source of passive intermodulation (PIM) in a radio frequency (RF) transmit/receive system comprises a two step process. As a first step, a first and second signal with frequencies in a transmit band are generated at a first power and a third order harmonic signal generated by a source of PIM within the system is obtained in the receive band. If the magnitude of the PIM exceeds a noise threshold, a second step is performed. The second step includes generating a third and fourth signal at a second power higher than the first power to obtain a higher order harmonic signal generated by the source of PIM. The PIM magnitude and a distance to the source of the PIM are calculated using the higher order harmonic signal.
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