Self Complementary 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: 2016-08-17
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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The invention provides a self-complementing radar antenna. The self-complementing radar antenna includes: a metal cavity with an opening on its upper end and a recessed back cavity at its lower end; an insulating dielectric plate fixed at the opening on the upper end of the metal cavity; a butterfly antenna arm made of metal material It is prepared and formed on an insulating dielectric board in a planar shape, including a first antenna arm unit and a second antenna arm unit with opposite tops and center symmetry, and the two bottom ends of the two antenna arm units extend symmetrically toward the inner side of the butterfly antenna arm, Two rectangular microstrip lines are formed; the rectangular microstrip line of the first antenna arm unit is symmetrical to the rectangular microstrip line of the second antenna arm unit on the same side, the two are separated by a second preset distance and electrically connected through a resistor . The basic unit of the self-complementary radar antenna of the present invention is composed of a symmetrical butterfly dipole and a rectangular microstrip line. The end of the rectangular microstrip line is loaded with resistance, which has the characteristics of ultra-wideband and meets the requirements of the system for detection distance and accuracy.
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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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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