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Kneed tuning of antennae in echo chamber, transmitting technique and equipment in symmetry module

A reverberation chamber and antenna technology, applied in the direction of the size/direction of the magnetic field, to achieve the effect of improving uniformity

Inactive Publication Date: 2005-08-31
BEIJING JIAOTONG UNIV
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Problems solved by technology

The reverberation chamber can also work at the low end of the frequency. Two problems must be solved: one is the efficiency of the mixer, and the other is whether it can be stirred evenly under the condition of few modes.

Method used

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  • Kneed tuning of antennae in echo chamber, transmitting technique and equipment in symmetry module
  • Kneed tuning of antennae in echo chamber, transmitting technique and equipment in symmetry module
  • Kneed tuning of antennae in echo chamber, transmitting technique and equipment in symmetry module

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Embodiment 1

[0013] Embodiment 1: A reverberation chamber antenna stirring tuning and symmetrical mode emission device (source stirring reverberation chamber) is mainly composed of a shielded rectangular cavity, a transmitting system, a receiving system, an antenna control system and a main control system, and the shielded rectangular cavity It is mainly composed of shielded doors, ventilation waveguide windows, filters, interface boards, etc.; the transmitting system is composed of signal sources, power amplifiers, transmitting antennas, etc.; the receiving system is composed of field strength probes, receiving antennas, millivolt meters, receiving Machine composition; the antenna control system is mainly used to control the operating route of the transmitting antenna and the transmitting time and sequence in the antenna group; the main control system is used to control the entire test process. These systems are the same as the traditional electromagnetic compatibility test system except t...

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Abstract

The present invention relates to a reverberation room antenna stirring tuning and symmetric mode transmitting technique and its equipment. Said equipment mainly is formed from shielding cabinet-shaped cavity body, transmitting system, receiving system, antenna control system and main control system, and the shielding cabinet-shaped cavity body mainly is composed of shielding door, ventilation waveguide window, filter and interface board. Besides, said invention also provides the antenna control system and concrete position and polarization direction arrangement of said transmitting antenna in the reverberation room. Said invented technique can greatly improve low-frequency electromagnetic field uniformity in the reverberation room.

Description

Technical field [0001] The invention relates to a reverberation chamber antenna stirring tuning and symmetrical mode emission technology and device. Background technique [0002] As early as 1968, people put forward the idea of ​​reverberation chamber electromagnetic compatibility test. Since then, people have continued to carry out theoretical research and experiments in this area. Especially in recent years, research papers on reverberation chambers have doubled, and the electromagnetic testing technology of reverberation chambers has been quite mature. On this basis, the International Electrotechnical Commission has issued The basic standard of reverberation chamber "Electromagnetic ompatibility (EMC)-Part4-21: Testing and measurement techniques-Reverberation ChamberTest Methods" marks the reverberation chamber from research to practicality. So far, reverberation chambers are mainly divided into three categories, namely mechanical stirring / tuning reverberation chambers, ...

Claims

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Application Information

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IPC IPC(8): G01R33/02
Inventor 丁坚进沙斐王化深周克生闻映红王凤兰朱云王国栋吕飞燕
Owner BEIJING JIAOTONG UNIV
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