Metal via hole stepped-impedance triple-polarized half-slot antenna with slits
A technology of step impedance and metal vias, which is applied in slot antennas, antennas, antenna grounding devices, etc., can solve the difficulty in impedance matching of slot antenna feeding transmission lines, the reduction of spectral efficiency and channel capacity, and the deterioration of antenna port isolation, etc. problem, achieve the effect of improving isolation between ports, realizing miniaturization, and reducing electrical size
Inactive Publication Date: 2016-07-06
SOUTHEAST UNIV
View PDF3 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
A large metal ground will have a shielding effect on the radiation of the antenna, making the slot antenna unsuitable for co-located multiple-input multiple-output (MIMO) applications, especially when used as a multi-polarized antenna, a large metal ground will cause the antenna to Poor cross-polarization, poor isolation between antenna ports, which will lead to a decrease in spectral efficiency and channel capacity
At the same time, the impedance of the slot is very large, which also makes the impedance matching of the slot antenna feeding transmission line more difficult.
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
[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0019] The embodiment adopted in the present invention is: the three-polarized half-slot antenna with step impedance of metal vias in grid slots includes three single-polarized step-impedance antennas with metallic vias in grid slots 13 placed perpendicular to each other; The metal via-hole step impedance antenna 13 of the grid slot includes a dielectric substrate 1, a metal ground 2 and a radiation slot 3 arranged on the dielectric substrate 1, and a microstrip feeder 4; one side of the dielectric substrate 1 is the metal ground 2, and the other side of the dielectric substrate 1 One side is the conduction band 5 of the microstrip feeder 4; the metal ground 2 has a radiation slot 3, the shape of the radiation slot 3 is a rectangle, and the radiation slot 3 is located in the center of the metal ground 2; there are multiple parallel grid slits on the metal ...
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 provides a metal via hole stepped-impedance triple-polarized half-slot antenna with slits, and relates to a slot antenna. The antenna comprises three single-polarized antennas (11), which are perpendicular to one another, wherein each antenna (11) comprises a dielectric substrate (1), a metal ground plane (2), a radiation slot (3) and a microstrip feeder line (4); each metal ground plane (2) and each radiation slot (3) are arranged on the corresponding dielectric substrate (1); each radiation slot (3) and a plurality of parallel slits (6) are formed in the corresponding metal ground plane (2); one end of each radiation slot (3) is short-circuited; the other end of each radiation slot (3) is open; two rows of metal via hole (7) arrays are arranged at the part, close to the open end, of each radiation slot (3) to form a low-resistance slot (8) and a high-resistance slot (9) is formed in the other part of the radiation slot (3); an antenna port (10) is arranged at one end of each microstrip feeder line (4); and the other end of each microstrip feeder line (4) is open, strides across the corresponding high-resistance slot (9) and extends a period of length. The antenna can work in a multiband, the antenna dimension, cross polarization and shielding can be reduced, and isolation can be improved.
Description
technical field [0001] The present invention relates to a slot antenna, in particular to a three-polarized half-slot antenna with step impedance of a metal via hole in a grid slot. Background technique [0002] The slot antenna is the dual antenna of the dipole antenna and has a wide range of applications. However, a common slot antenna not only has to radiate the slot itself with a length of half the wavelength, but also requires a large metal ground area around the radiation slot. Usually, the length of the metal ground is half the length of the slot. For one wavelength, the width of the metal ground is one-half wavelength larger than the width of the slot. Multi-polarization MIMO can effectively improve spectral efficiency and channel capacity. In order to apply MIMO technology to small terminals, antennas of different polarizations need to be co-located. A larger metal ground will block the radiation of the antenna, making the slot antenna unsuitable for co-located mul...
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 Applications(China)
IPC IPC(8): H01Q1/38H01Q1/48H01Q13/10H01Q5/10
CPCH01Q1/38H01Q1/48H01Q5/10H01Q13/10
Inventor 殷晓星杨亮赵洪新
Owner SOUTHEAST UNIV