Passive intermodulation detection method and device

A passive intermodulation and detection device technology, applied in the field of communication, can solve the problems of increasing the volume and weight of PIM detection equipment, increasing the cost, increasing the filter in the duplexer, etc., so as to reduce the volume and weight, reduce the requirements, and reduce the cost effect

Active Publication Date: 2013-03-27
HUAWEI TECH CO LTD
View PDF1 Cites 22 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the process of realizing the embodiment of the present invention, the inventor found that two transmission signals are required in the prior art, and at the same time, since the intermodulation product is very close to the frequency of the transmission signal, the fr...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Passive intermodulation detection method and device
  • Passive intermodulation detection method and device
  • Passive intermodulation detection method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0043] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0044] figure 1 It is a flow chart of Embodiment 1 of the passive intermodulation detection method of the present invention, such as figure 1 As shown, the method of this embodiment may include:

[0045] Step 101. Send test signals to the antenna feeder system at least twice, and the frequency of each test signal is different.

[0046] In the e...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

An embodiment of the invention provides a passive intermodulation detection method and device. The device comprises a signal source input end, a duplexer, a frequency doubler, a mixer and a detector, the signal source input end is used for inputting at least two times of test signals with different frequencies, the duplexer is used for sending each test signal to an antenna feeder system and receiving harmonic signals which correspond to each test signal and are fed back by the antenna feeder system, the frequency doubler is used for conducting frequency doubling treatment on each test signal and obtaining frequency doubling signals of the test signals, the mixer is used for conducting frequency mixing treatment on the frequency doubling signals of the test signals and corresponding harmonic signals and obtaining frequency mixing signals, and the detector is used for obtaining a personal information management (PIM) testing result of the antenna feeder system according to the frequency mixing signals of each test signal. The embodiment only needs to send one frequency signal at one time, frequencies of the harmonic signals and the testing signals are far away, frequency spaces between sending signals and receiving signals of a PIM detecting device are big, requirements for the duplexer are reduced, size and weight are reduced, and cost is lowered.

Description

technical field [0001] Embodiments of the present invention relate to communication technologies, and in particular to a passive intermodulation detection method and device. Background technique [0002] In the mobile communication network, the antenna feeder system is an important part of the base station. The antenna feeder system is mainly composed of passive components such as antennas, jumpers and feeders. The passive components are nonlinear. When multiple frequencies are in these passive components When mixed, PIM (Passive Inter Modulation, Passive Intermodulation) signal will be generated. When the PIM signal is unqualified and within the receiving frequency band of the base station receiver, it will be received by the base station receiver, which will reduce the sensitivity of the receiver and cause communication The capacity of the system is reduced and the quality of the network is reduced. Therefore, when detecting that the PIM index is unqualified, it is necess...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H04W24/08H04W88/08
Inventor 王淳
Owner HUAWEI TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap