Online calibration method for radio frequency front-end receiving-transmitting link

A technology of radio frequency front-end and calibration method, which is applied in the field of radio frequency front-end, and can solve problems such as cumbersome calibration process, inability to perform online calibration, and affecting equipment use efficiency

Active Publication Date: 2012-09-26
VI SERVICE NETWORK
View PDF2 Cites 27 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the cumbersome calibration process, online calibration cannot be performed, which will affect the use efficiency of the equipment

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
  • Online calibration method for radio frequency front-end receiving-transmitting link
  • Online calibration method for radio frequency front-end receiving-transmitting link
  • Online calibration method for radio frequency front-end receiving-transmitting link

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0099] Single-pole multi-throw switch 1 in the system uses PE42440 to select the channel of the input signal;

[0100] The input directional coupler 2 and the output directional coupler 9 use SYD-20-33+; when the selector switch replaces the directional coupler, the switch PE42552 can be selected;

[0101] The input end programmable gain module 3 and the output end programmable gain module 10 use a combination of PE4309 and NBB-400;

[0102] The input mixing module 4 uses ADL5387 to achieve down conversion;

[0103] The signal processing unit 5 uses NI PXIe-7965R and NI 5781 to generate and receive two signals;

[0104] The internal calibration source 6 uses ZY2000, which cooperates with the internal local oscillator to generate calibration signals;

[0105] The radio frequency switch array 7 uses two PE42552 to build;

[0106] Power meter 8 uses ZX47-55+ to realize broadband power detection;

[0107] The output end mixing module 11 can choose ADL5386 to realize up-conversion;

[0108] Pres...

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 invention relates to an online calibration method for a radio frequency front-end receiving-transmitting link, including radio frequency signal receiving calibration and radio frequency signal transmitting calibration. The radio frequency signal receiving calibration comprises the following steps: calibration setting is initialized; an internal calibration source enters a directional coupler at an input end and obtains a power meter reading of a receiving link; and signal power of a signal processing unit is compared with a power meter measurement result to obtain a power calibration factor. The calibrated radio frequency input signals can be measured by switching a single-pole multi-throw switch to a radio frequency input path, testing the calibrated frequency band and compensating corresponding calibration parameters. The radio frequency signal transmitting calibration comprises the steps of generating transmission baseband signals, calibrating I, Q imbalance of a transmitting link, calibrating output power, and compensating calibration parameters. In the module designed by the invention, radio frequency signal transmitting and receiving can be calibrated in real time without need for external equipment. The calibration of a portion of devices can be omitted in the production process of modules and time for module production can be shortened.

Description

Technical field [0001] The invention belongs to the technical field of radio frequency front ends, and specifically relates to an online calibration method for a radio frequency front end transceiver link. Background technique [0002] As the most front-end part of the radio frequency module, the radio frequency front-end circuit has a significant impact on the various indicators of the radio frequency module. Due to the wide variety of devices used in the radio frequency module, a lot of calibration and testing are required during production to ensure that the various parameters of the module are within a certain tolerance range. [0003] Existing calibration needs to take the equipment to the measurement laboratory and calibrate it through other equipment. Because the calibration process is relatively cumbersome, online calibration cannot be performed, which will affect the efficiency of the equipment. [0004] The purpose of the present invention is to propose a simplified onlin...

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 Applications(China)
IPC IPC(8): H04L25/06H04B1/40
Inventor 陆奚峰俞一鸣赵延波徐驰邵晖
Owner VI SERVICE NETWORK
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