A Multi-Frequency Shared High Efficiency Compact Field Feed System
A compact field feed and high-efficiency technology, applied in the fields of electromagnetic field characteristics, antennas, instruments, etc., can solve problems such as high cost of use, and achieve the effects of improved automation measurement, convenient production, and simplified feed system
Active Publication Date: 2022-03-25
BEIHANG UNIV
View PDF15 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Such a large site can provide a relatively large quiet area to meet the measurement needs of large DUTs, but it also brings a very large cost of use
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0037] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0038] Aiming at the shortcomings of the traditional compact field feed source such as low test efficiency of single transmission and single reception and the inability to quickly switch between antenna measurement and RCS measurement, the present invention proposes a multi-frequency sharing high-efficiency compact field feed source system, and the electronically controlled radio frequency switch can realize multi-frequency For measurement, the mechanical slide rail can adjust the position of the feed source to realize the function conversion of RCS measurement and antenna measurement, which is very important for improving measurement efficiency in large and ultra-large compact fields. For the problem of insufficient horizontal polarization isolation of feed sources during measurement, the present invention proposes a method for reducing the hor...
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
Login to View More Abstract
The invention relates to a multi-frequency shared high-efficiency compact field feed source system, comprising first to fourth transmitting feed sources and corresponding first to fourth receiving feed sources, and a rotatable feed source bracket panel. The feed sources are symmetrically distributed on both sides of the panel with the central axis of the panel as the axis. The entire feed source panel is installed on a mechanical slide rail, and the feed source system can be switched between antenna measurement and RCS measurement through the movement of the slide rail and the control of the control unit. When performing RCS measurement, the sliding rail returns to the initial position, and the center of the feed panel is at the focal point of the reflector. The control unit can control the RF switch of the sending and receiving feed to realize broadband RCS measurement. When performing antenna measurement, the sliding rail moves the receiving feed of the measurement frequency band to the focal point of the reflector for antenna measurement, and the horizontal polarization isolation between feeds can be greatly improved by a small rotation of the feed panel. This multi-band, multi-measurement mode compact field feed system greatly improves the test efficiency, and the test efficiency for large and ultra-large compact field test sites is significantly improved. At the same time, due to the improvement of test efficiency, it is possible to measure the wideband frequency when the turntable is continuously scanned.
Description
technical field [0001] The invention relates to the technical field of compact field feed sources, in particular to a multi-frequency shared high-efficiency compact field feed source system. Background technique [0002] The compact field technology is a commonly used electromagnetic measurement technology, which forms a plane electromagnetic wave at a short distance through the near-field focusing principle, and realizes the measurement of antenna parameters or target scattering characteristics. With the evolution of compact field technology and changes in user needs, the compact field has become very large, and the corresponding cost has also increased to hundreds of millions. Such a large site can provide a relatively large quiet area to meet the measurement requirements for large objects to be measured, but it also brings a very high cost of use. In order to reduce the cost of use, the most reliable and effective way is to improve the test efficiency of the compact fiel...
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
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G01R29/08H01Q19/17
CPCG01R29/0878H01Q19/17
Inventor 虞志远王正鹏
Owner BEIHANG UNIV