Passive inter-modulation detection device and method

A detection device and passive intermodulation technology, applied in the field of communication, can solve the problem of not being able to further judge the PIM, and the positioning cannot provide more information, etc.

Active Publication Date: 2016-02-24
SHANGHAI HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the existing test method can only obtain the PIM signal at the radio frequency interface. Through the PIM signal, it can only judge whether the PIM index meets the standard. It cannot further judge which type of PIM problem, and cannot provide more information for subsequent positioning.

Method used

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Embodiment Construction

[0035] Embodiments of the present invention provide a passive intermodulation detection device and method for judging whether a PIM index is up to standard, quickly determining the type of PIM and the location of a PIM source, and providing effective information for users to solve PIM problems.

[0036] see figure 1 , an embodiment of the passive intermodulation detection device 100 in the embodiment of the present invention includes:

[0037] The radio frequency connector 101 is used to obtain the first PIM signal output by the device under test at the radio frequency interface;

[0038] A near-field probe 102, configured to acquire a second PIM signal inside the device under test;

[0039] The processing module 103 is configured to process the first PIM signal obtained by the radio frequency connector and the second PIM signal obtained by the near-field probe;

[0040] The display module 104 is configured to display the first PIM signal processed by the module 103 and the ...

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Abstract

The embodiment of the invention discloses a passive inter-modulation PIM detection device. The passive inter-modulation PIM detection device is used for judging whether a PIM index reaches the standard or not and rapidly determining the type of PIM and the position of a PIM source. The PIM detection device in the embodiment of the invention comprises a display module, a processing module, a radio-frequency connector and a near-field probe; the radio-frequency connector is used for obtaining a first PIM signal output by equipment to be detected at a radio-frequency interface; the near-field probe is used for obtaining a second PIM signal in the equipment to be detected; the processing module is used for processing the first PIM signal obtained by the radio-frequency connector and the second PIM signal obtained by the near-field probe; and the display module is used for displaying the first PIM signal and the second PIM signal processed by the processing module. The embodiment of the invention further discloses a passive inter-modulation detection method. The passive inter-modulation detection method is used for judging whether the PIM index reaches the standard or not and rapidly determining the type of PIM and the position of the PIM source.

Description

technical field [0001] The present invention relates to the communication field, in particular to a passive intermodulation detection device and method. Background technique [0002] Passive Inter-Modulation (PIM for short), also known as intermodulation distortion, is caused by the nonlinear characteristics of various passive devices in the radio frequency system. In a high-power, multi-channel system, the nonlinearity of these passive devices will produce some frequency components relative to the operating frequency, and these frequency components and the operating frequency are mixed together to enter the operating system. If these useless frequency components are large enough, It will affect the normal work of the communication system. Just because PIM is caused by the non-linearity of the passive device itself, as long as there is a radio frequency system with passive devices, there must be PIM. PIM intermodulation distortion is one of the interferences that affect the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B17/00
CPCH04B17/00
Inventor 冯云冷舜
Owner SHANGHAI HUAWEI TECH CO LTD
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