Broadband near-field measurement system and method for fast calibration of amplitude and phase of radio frequency link

A radio frequency link and broadband technology, applied in the field of broadband near-field measurement systems, can solve the problem of slow scanning data transmission rate, and achieve the effects of fast data transmission speed, simple system structure, and shortened measurement time.

Pending Publication Date: 2021-07-20
SOUTHEAST UNIV
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is: to overcome the problem and defect of slow scanning data transmission rate i

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
  • Broadband near-field measurement system and method for fast calibration of amplitude and phase of radio frequency link
  • Broadband near-field measurement system and method for fast calibration of amplitude and phase of radio frequency link

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0034] The method and apparatus of the amplitude phase rapid calibration provided by the present invention not only for the phase-controlled array radar, but can be a radio frequency link and antenna that require calibration of any amplitude or phase. Next, a further detailed description of the implementation of the technical solution in conjunction with the drawings:

[0035] A broadband near field measuring circuit for amplitude phase rapid calibration of RF links, such as figure 1As shown, including a broadband phase lock ring 1, a single knife double-throw switch, a multiplier 3, an amplifier 4, a filter 5, a toner failure unit 6, a microcontrol unit 7, a power detector 8, a strip line orientation coupler 9 , Mixer 10, analog-to-digital converter 11, field programmable array 12, host machine 13, power divider 14, transmit antenna, and link 15, receive antennas and links 16.

[0036] The circuit has the following functions:

[0037] First, realize the frequency source of broadb...

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 broadband near-field measurement system and method for quickly calibrating the amplitude and the phase of a radio frequency link. The system comprises a mechanical turntable, a system circuit board, an upper computer and an electric displacement platform, the system circuit board is provided with a broadband near-field measurement circuit, the broadband near-field measurement circuit is provided with a transmitting end coupler interface, a receiving end coupler interface and a communication interface, and the receiving end coupler interface and the communication interface are respectively connected with a transmitting antenna and link, a receiving antenna and link and an upper computer; the transmitting antenna and the link are installed on the mechanical rotary table, and the receiving antenna and the link are installed on the electric displacement platform. The broadband near-field measurement circuit comprises a broadband transmitter, a low-intermediate frequency receiver, two couplers and a digital signal processing module. By using the measurement system provided by the invention, the calibration speed of the phased array transceiving channel can be obviously improved.

Description

technical field [0001] The invention relates to the field of phased array radar measurement, in particular to a broadband near-field measurement system and method for rapid calibration of amplitude and phase of radio frequency links. 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, due to the structural error caused by the machining accuracy, the inconsistency of the device itself, and the mutual coupling between the antenna elements, the amplitude and phase of each antenna element are different from the expected value, so that the array performance cannot reach the ideal work. state. Therefore, after the phased array antenna is assembled, it is necessary to perform amplitude and phase calibration to obtain the amplitude and phase difference, and then compensate by adjusting the feed. [0003] At present, the amplitude and phase calibration methods of mainstre...

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): G01S7/40
CPCG01S7/4004
Inventor 韩涛毛源齐天润董晨琪陈鹏余旭涛
Owner SOUTHEAST UNIV
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