Quick phased-array antenna calibrating method and system

A technology of phased array antennas and calibration methods, which is applied to antennas, electrical components, etc., and can solve the problems of insufficient measurement speed, low test efficiency, and unsatisfactory measurement methods

Active Publication Date: 2015-09-30
BEIJING INSTITUTE OF TECHNOLOGYGY
View PDF3 Cites 20 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of the commutation measurement method is that, in general, the coefficient matrix is ​​not full of rank, and other prior knowledge must be introduced when solving the measurement equation, which will also lead to a long measurement time and low test efficien

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
  • Quick phased-array antenna calibrating method and system
  • Quick phased-array antenna calibrating method and system
  • Quick phased-array antenna calibrating method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0044] For ease of understanding, the present invention will be described in detail below in conjunction with the accompanying drawings and by taking a five-element array as an example.

[0045]Step 1. Adjust the relative position of the phased array antenna 1 to be tested and the antenna 5 to be tested so that it meets the far-field condition; use the control device 4 to control the rotating shaft 2 of the antenna turntable so that the phased array antenna 1 to be tested and the antenna to be tested The physical centers of 5 are aligned; the transmitting port of transceiver 3 is connected to the feed port of accompanying antenna 5 through a test cable; the receiving end of phased array antenna 1 to be tested enters the receiving port of transceiver 3 through a test cable.

[0046] Step 2. The control device 4 controls the transceiver 3 to turn on the switch through the control bus, and sets the frequency point required for calibration, so that the transmitting port of the tran...

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 quick phased-array antenna calibrating method and system. The quick phased-array antenna calibrating method includes calculating phase of each antenna unit via algorithm calculation by measuring sum signal power value of sum signals in 4 (N-1) phase change times (N is the number of phase-array antenna units) along with the antenna units; changing reference channels, measuring power values of the sum signals in 4 (N-1) phase change times along with the antenna units and calculating amplitude of the antenna units through algorithm calculation. By the quick phased-array antenna calibrating method, measuring times and operation are few, the integral calibration process costs less system occupation time, and the phased-array antenna calibrating method is rapid; the integral process has no need to directly measure phase, engineering implement is simple, and power measurement is more stable and reliable as compared with phase measurement, and the quick phased-array antenna calibrating method is robust. When some channels of phased-array antennas have faults, phase difference and amplitude value of other channels are effective by the calibrating method, fault pervasion is avoided, and the quick phased-array antenna calibrating method has the advantage of robustness.

Description

technical field [0001] The invention relates to the technical field of antenna measurement, in particular to a phased array antenna rapid calibration method and a calibration system. Background technique [0002] In a phased array antenna system, the expected beam scanning can be obtained by adjusting the phase of each antenna element. However, the number of phased array units is large, the structure is asymmetrical due to processing accuracy, and the inconsistency of the device itself. In addition, the fluctuation of the antenna itself and the mutual coupling between the antenna units make the amplitude and phase of each antenna unit different from the expected If the values ​​are different, the performance of the array will not reach the best working condition, or even the required technical conditions, which will affect the communication quality. Therefore, after the phased array antenna is assembled, it needs to be measured and calibrated. The purpose is to eliminate th...

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): H01Q3/36
Inventor 孙厚军王焕菊郑沛
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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