Resistance-capacitance mixed loading well radar ultra-wideband antenna
An ultra-broadband antenna and hybrid loading technology, which is applied to antennas, resonant antennas, and devices that enable antennas to work in different bands at the same time, can solve the problem of low antenna radiation efficiency
Active Publication Date: 2021-07-06
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology
[0007] The purpose of the present invention is to solve the problem of low radiation efficiency of radar antennas in existing wells, and propose an ultra-wideband dipole antenna with mixed resistance-capacitance loading
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[0027] The present invention will be further described below in conjunction with the embodiments and the accompanying drawings.
[0028] Such as figure 1 , figure 2 , image 3 As shown, the ultra-wideband printed dipole antenna of the resistance-capacitance mixed loading of the present embodiment includes a thickness of 2mm, a dielectric constant ε r= 4.3 FR-4 rectangular dielectric substrate, and two dipole arms arranged symmetrically on the left and right sides of the dielectric substrate, the dipole arms include the first front rectangular metal patch and the second front rectangular metal patch arranged on the front 1. The third front rectangular metal patch is set on the first back rectangular metal patch and the second back rectangular metal patch on the back; the left and right ends of the rear rectangular metal patch are respectively connected to the adjacent front rectangular The metal patches are overlapped, and the overlapped metal patches form a capacitive load...
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Abstract
The invention discloses a resistance-capacitance mixed loading well radar ultra-wideband antenna, and belongs to the technical field of antennas. The antenna comprises a dielectric substrate and two dipole arms symmetrically arranged on the two sides of the dielectric substrate, each dipole arm comprises a front metal patch and a back metal patch which are arranged in a staggered mode in the axial direction, and the metal patch parts with overlapped projections form a capacitor; all the metal patches except the first front rectangular metal patch are provided with a gap perpendicular to the axial direction, and a resistor is loaded in the gap; and the capacitors and the resistors are alternately arranged to form a resistance-capacitance mixed loading structure. Through a resistance-capacitance mixed loading mode, a dipole antenna in a resonant state can be converted into a traveling wave dipole antenna, and loss of radiation energy on a loading resistor can be greatly reduced, so that the radiation efficiency of the antenna is improved, the gain of the antenna is improved, and finally, the amplitude of transient electromagnetic pulse radiated by the antenna is larger; and the antenna has a farther radial detection distance in a loss stratum.
Description
technical field [0001] The invention belongs to the technical field of antennas, and in particular relates to an ultra-wideband dipole antenna with high radiation efficiency suitable for radar in wells. Background technique [0002] The shallow surface provides most of the materials and a huge activity space for human life, supporting the survival and development of human beings. Compared with traditional exploration geophysics and solid geophysics, shallow surface geophysics covers more complex application areas, including geotechnical engineering, mining engineering, environmental engineering, geological disaster prediction and prevention, archaeology, urban underground space detection, Defense military applications and so on. However, the shallow surface is also the most complex, sensitive and fragile part of the Earth. General geophysical methods are carried out on the surface of the ground or the surface of the object to be measured. However, due to the complex struct...
Claims
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IPC IPC(8): H01Q1/38H01Q9/04H01Q5/50
CPCH01Q1/38H01Q9/0407H01Q5/50
Inventor 马春光孙浩然赵俊宇季玉彬杨坤罗勇
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA