Check patentability & draft patents in minutes with Patsnap Eureka AI!

A digital-analog hybrid phased array antenna system calibration method

A phased array antenna and digital-analog hybrid technology, which is applied in the field of communication, can solve the problems of complex calibration system, inconvenient, and inability to calibrate the phased array antenna in real time, and achieve the effect of simple calibration process, simplified operation process, and improved timeliness

Active Publication Date: 2022-04-22
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The traditional calibration method of phased array antenna needs to set an auxiliary calibration source in the far field of the antenna to transmit calibration signals. The calibration system is relatively complicated, and it is inconvenient during the use of the phased array antenna system. It is impossible to perform real-time calibration of the phased array antenna, which is not conducive to Application of Phased Array Antenna in Communication System

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
  • A digital-analog hybrid phased array antenna system calibration method
  • A digital-analog hybrid phased array antenna system calibration method
  • A digital-analog hybrid phased array antenna system calibration method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings.

[0035] figure 1 Shown is a schematic diagram of the arrangement of 12×3 array element digital-analog hybrid phased array antenna elements, and each array of antenna elements is connected to three radio frequency channels of the same TR component.

[0036] figure 2 Shown is a schematic diagram of the connection of TR components. Each TR component contains 3 RF channels and an IF channel. The RF channel is connected to the corresponding antenna unit, and the IF channel is connected to the IF channel of the corresponding antenna.

[0037] image 3 Shown is the connection diagram of the IF channel coupler. The coupler includes 12 input ports, 12 direct connection ports and 1 coupling port. The input ports are respectively connected to the corresponding antenna IF channels, and the direct connection port is connected to the IF ch...

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 discloses a digital-analog hybrid phased array antenna system calibration method, which belongs to the technical field of communication. The present invention first configures the phase shifter for the receiving channel and the transmitting channel of the TR component respectively through the receiving configuration parameters and the transmitting configuration parameters of the TR component, and completes the radio frequency channel calibration of the TR component; then, receives the calibration coefficient and transmits the calibration coefficient through the intermediate frequency channel The calibration coefficient is used to calibrate and compensate the intermediate frequency channel of the antenna system, and finally realize the calibration of the entire digital-analog hybrid phased array antenna system. The invention does not need to set an auxiliary calibration source in the far field of the antenna to transmit a calibration signal, and the calibration process is simple. It divides the entire digital-analog hybrid phased array antenna system calibration process into RF channel calibration and intermediate frequency calibration. After RF calibration, fixed parameters can be formed without repeated calibration, which improves the timeliness of antenna calibration. In addition, the present invention adds a coupler to the intermediate frequency channel of the antenna to support automatic calibration after the antenna system is powered on.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a digital-analog hybrid phased array antenna system calibration method. Background technique [0002] The digital-analog hybrid phased array antenna includes both an analog phase shifter and a digital phase shifter to control the elevation angle and azimuth angle of the antenna beam respectively. While retaining the advantages of flexible beam control of the digital phased array antenna, it reduces the digital channels of the antenna system and reduces the cost of the antenna. [0003] In order to reduce the influence of the phase and amplitude errors of the signal in the phased array antenna system on the entire system, the antenna needs to be calibrated, and the digital-analog hybrid phased array antenna needs to correct the errors of the analog channel and digital channel of the antenna at the same time. [0004] The traditional calibration method of phased array antenn...

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): H04B17/12H04B17/21
CPCH04B17/12H04B17/21
Inventor 罗亚赛梅立荣褚素杰曹久良
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com