Unlock instant, AI-driven research and patent intelligence for your innovation.

Passive intermodulation measurement device

A passive intermodulation and component technology, applied in fault location, fault detection according to conductor type, line transmission monitoring/testing, etc., can solve complex circuit configuration and other problems

Active Publication Date: 2019-05-31
KEYSIGHT TECH
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Understandably, avoiding such reflections requires rather complex circuit configurations

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 measurement device
  • Passive intermodulation measurement device
  • Passive intermodulation measurement device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] In the following detailed description, for purposes of explanation rather than limitation, illustrative embodiments disclosing specific details are presented in order to provide a thorough understanding of embodiments in accordance with the present invention. However, it will be apparent to one having the benefit of this disclosure that other embodiments according to the invention are within the scope of the appended claims, apart from the specific details disclosed herein. Moreover, descriptions of well-known devices and methods may be omitted so as not to obscure the description of the example embodiments. Such methods and apparatus are also within the scope of the present invention.

[0021] As described in detail below, the present invention relates to a substantially passive intermodulation measurement device and method for specifying the location and magnitude of intermodulation sources of passive components in a transmission line. Advantageously, the apparatus a...

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

The present application relates to passive intermodulation measurement devices, disclosing a device for specifying the location of passive intermodulation (PIM) sources in a transmission line. The apparatus includes: a first signal source configured to generate a first signal at a first frequency; a second signal source configured to generate a second signal at a second frequency; configured to mix signals from the first signal source A mixer of the first signal and the second signal from the second signal source; configured to provide a signal reference signal source having the same frequency as the frequency of the distortion component of the signal generated at the PIM generation source; configured to pass from The PIM generates the distorted component of the signal that the source returns to the test port and passes through a band-pass filter of the signal generated by the reference source; configured based on the signal passed by the band-pass filter when the switch is off and when the switch is on A measurement and calculation unit that performs measurements on signals passed by a band-pass filter and calculates the position of the PIM generation source.

Description

technical field [0001] The invention relates to a passive intermodulation measuring device. Background technique [0002] In a base station for mobile radio communications, relatively high power transmitted signals and relatively weak received signals follow the same path from the front end of the base station to the antenna. If components such as cables and connectors exhibit non-linear behavior in such paths, intermodulation distortion (IMD) due to higher-order (e.g. third-order) non-linearities can adversely affect the received signal and degrade performance . It can be appreciated that in certain applications, the measurement of IMD can be useful to improve performance in wireless communication systems. [0003] Measuring devices are known to determine the length of the cable from the test port to the passive intermodulation (PIM) source. In this known device, an oscillator generates a sawtooth wave and another oscillator generates a frequency modulated (FM) wave at a...

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
Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/10H04B1/56
CPCG01R23/20G01R31/083H04B3/46
Inventor 八木一行
Owner KEYSIGHT TECH