Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Calibration method for amplitude and phase variable array antenna

An array antenna and phase technology, which is applied in the field of aerospace measurement and control, can solve problems such as long time consumption and complex data processing process, and achieve the effect of simple operation process and simple solution.

Active Publication Date: 2009-07-15
中国航天科技集团公司第五研究院第五〇四研究所
View PDF0 Cites 74 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the data processing process of this method is complex and takes a long time

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
  • Calibration method for amplitude and phase variable array antenna
  • Calibration method for amplitude and phase variable array antenna
  • Calibration method for amplitude and phase variable array antenna

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] Such as figure 1 Shown is the structural diagram of the array antenna with variable amplitude and phase. In the figure, 3 is the antenna unit, 1 is the attenuator, and 2 is the phase shifter. By changing the state of the attenuator and the phase shifter, the amplitude and phase of the signal fed to each antenna unit can be changed. This work is performed by the controller 5 To be done.

[0034] 4 is a power source. When the array antenna is in the transmitting mode, the power source feeds each antenna unit through a corresponding attenuator and a phase shifter to transmit array signals. The power source includes a power divider to divide one signal into multiple paths and feed them to each antenna unit. The phase and amplitude of the signals of each antenna unit can be set by the controller to form the required specific shape of the beam and realize beam scanning. At this time, the auxiliary antenna 7 can be set in the far field range of the array antenna. When the 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 invention discloses a calibration method of an array antenna with alterable amplitude and phase. A power response of the array antenna at an auxiliary antenna is obtained by altering the states of an alterable digital phase shifter and an alterable digital attenuator in each channel of the array, an equation is formed by the power response corresponding to a response of a specific channel at multiple different states, a relative amplitude and a relative phase to a reference signal of the channel is obtained by solving the equation, and an phase-amplitude consistency error of each channel of the array is obtained, then the calibration is realized. Aiming at each channel, the calibration method of the invention can obtain the relative amplitude and phase of the channel only through three amplitude states and one phase state, the needed state parameter is small, the algorithm is simple and the operation process is easy.

Description

technical field [0001] The invention belongs to the field of aerospace measurement and control, and relates to a method for calibrating an array antenna with variable amplitude and phase. Background technique [0002] The array antenna is composed of many antenna units. Each antenna unit is fed with a signal of a certain amplitude and phase to form a specific beam and realize beam scanning. The signals of each antenna unit are superimposed to form the signal of the array antenna. For the array antenna with variable amplitude and phase, the signal amplitude and phase of each antenna unit can be adjusted. In general, the amplitude of the antenna unit signal is adjusted by controlling the attenuator connected behind each unit to form the required The phase of the antenna unit signal is controlled by changing the phase of the phase shifter connected to each unit to realize beam scanning. [0003] In order to precisely control the beam pointing, it is necessary to determine the ...

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): H01Q3/28H01Q3/30G06F17/16G01R29/08
Inventor 田步宁敬红勇
Owner 中国航天科技集团公司第五研究院第五〇四研究所
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com