Self-complement type radar antenna
A radar antenna, self-complementary technology, applied in the direction of antenna, antenna coupling, radiating element structure, etc., can solve the problems such as the need to further improve the antenna radiation efficiency, the poor coupling between the antenna and the wall, and the influence of radar detection distance. Conducive to productization, increase radiation directivity, and shield the effect of external electromagnetic interference
Active Publication Date: 2014-09-03
INST OF ELECTRONICS CHINESE ACAD OF SCI
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Problems solved by technology
The planar structure of the impedance-loaded butterfly antenna is conducive to the coupling between the antenna and the medium, and can effectively eliminate the secondary reflection at the end of the antenna, but the radiation efficiency of this antenna needs to be further improved
If the amplitude of the signal generated by the transmitter is limited, it will affect the detection range of the radar
Both the TEM horn antenna and the Vivaldi antenna have the problem of poor coupling between the antenna and the wall to a certain extent, and are generally large in size, which is not conducive to the portable design of the system
Method used
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[0025] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be noted that, in the drawings or descriptions of the specification, similar or identical parts all use the same figure numbers. Implementations not shown or described in the accompanying drawings are forms known to those of ordinary skill in the art. Additionally, while illustrations of parameters including particular values may be provided herein, it should be understood that the parameters need not be exactly equal to the corresponding values, but rather may approximate the corresponding values within acceptable error margins or design constraints. The directional terms mentioned in the embodiments, such as "upper", "lower", "front", "rear", "left", "right", etc., are only referring to the directions of the...
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Abstract
The invention provides a self-complement type radar antenna. The self-complement type radar antenna comprises a metal cavity, an insulation medium plate and a butterfly antenna arm. An opening is formed in the upper end face of the metal cavity, and an incurvate back cavity is formed in the lower end of the metal cavity. The insulation medium plate is fixedly arranged at the opening in the upper end face of the metal cavity. The butterfly antenna arm is made of metal materials and is formed on the insulation medium plate in a flat shape, the butterfly antenna arm comprises a first antenna arm unit and a second antenna arm unit which are centrosymmetric, the top end of the first antenna arm unit is opposite to that of the second antenna arm unit, and the two bottom ends of the two antenna arm units respectively and symmetrically extend towards the inner side of the butterfly antenna arm to form two rectangular microstrip lines. The rectangular microstrip line of the first antenna arm unit and the rectangular microstrip line of the second antenna arm unit on the same side are symmetric, are spaced by a second preset distance and are electrically connected through a resistor. A basic unit of the self-complement type radar antenna is composed of a symmetric butterfly dipole and the rectangular microstrip lines, the tail ends of the rectangular microstrip lines are loaded through the resistor, the advantage of the ultra wide band is achieved, and the requirement of a system for detection distance and precision is met.
Description
technical field [0001] The invention relates to the technical field of radar in the electronic industry, in particular to a self-complementing radar antenna. Background technique [0002] In the past 30 years, due to the great application value of radar detection technology for life-through-wall targets in anti-terrorism, military, search and rescue, security inspection and other fields, it has attracted much attention, and ultra-wideband radar technology has developed rapidly. Ultra-wideband radar technology is a radar detection method with good resolution and penetration depth, which can perform non-intrusive detection and tracking imaging of concealed or moving targets behind walls, so the advancement of ultra-wideband radar technology will also improve people's awareness of Defense against natural disasters and terrorism. [0003] my country's research on ultra-wideband radar technology started late, focusing on theoretical research, engineering prototypes mostly stayed...
Claims
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Login to view more IPC IPC(8): H01Q1/38H01Q1/52H01Q19/00
Inventor 吴世有王友成邵金进陈洁张锋方广有张晓娟
Owner INST OF ELECTRONICS CHINESE ACAD OF SCI
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