Unlock instant, AI-driven research and patent intelligence for your innovation.
A single-feed three-beam low-rcs metasurface angle reflector antenna
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A technology of angled reflective surfaces and metasurfaces, which is applied in antennas, radiating element structures, electrical components, etc., can solve the problems of limited gain improvement, complex antenna structure, and inability to achieve calibration, so as to achieve increased gain and reduced scattering characteristics , the effect of improving applicability
Active Publication Date: 2020-08-04
XIDIAN UNIV
View PDF1 Cites 0 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
However, since there is no specific radiation focus on the angled reflector, the radiation beam emitted from the feed antenna cannot be well calibrated, and the gain improvement is extremely limited
On the other hand, the angle design of the reflective surface will also cause strong backscattering
In 2016, the authorized announcement number is CN 104103910B, and the patent application titled "A Method for Optimal Design of Single-Aperture Multi-beam Antenna" discloses a single-aperture multi-beam reflector antenna. , which effectively improves the gain of the antenna. However, its multi-beam performance is realized in the form of a feed array. It belongs to the type of multi-feed single-aperture multi-beam antenna. The antenna structure is relatively complicated, and it cannot effectively weaken its own scattering characteristics.
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 more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0030] Embodiment 1. In this embodiment, the directions of the beams emitted from the inner surfaces of the three dielectric plates are the same.
[0031] refer to figure 1 , the present invention includes a first dielectric plate 1, a second dielectric plate 2, a third dielectric plate 3, a first metal base plate 4, a second metal base plate 5, a third metal base plate 6, a spherical wave feed source 7, a support rod 8 and Symmetric metal ring structure9.
[0032] The surface shapes of the first dielectric plate 1, the second dielectric plate 2, and the third dielectric plate 3 are isosceles right-angled triangles, and are respectively connected to the first metal bottom plate 4, the second metal bottom plate 5, and the third metal bottom plate 6. The shape of the board surface is the same, and three dielectric boards are spliced to form a three-sided angle structure, and two of them are vertical.
[0033] The first metal bottom plate 4, the second metal bottom plate 5, a...
Embodiment 2
[0044] Embodiment 2. In this embodiment, beam directions emitted from the inner surfaces of the three dielectric plates are different.
[0045] The structure of this embodiment is exactly the same as that of Embodiment 1, the only difference is that the sizes of the symmetrical metal ring structures 9 on the inner surfaces of the three dielectric plates are different, so that the directions of the beams emitted from the inner surfaces of the three dielectric plates are different, respectively for
Embodiment 3
[0046] Embodiment 3, in this embodiment, the directions of the beams emitted from the inner surfaces of the three dielectric plates are the same.
[0047] In this embodiment, the shape and quantity of the first dielectric plate 1, the second dielectric plate 2, the third dielectric plate 3, the first metal bottom plate 4, the second metal bottom plate 5, and the third metal bottom plate 6, and the spherical wave feed source 7 The model and quantity, and the radiation direction of the three beams All the same as in Example 1.
[0048] In this embodiment, the size of the reflecting surface of the antenna in Embodiment 1 is doubled, and 50×(1+50) / 2=1275 periodically arranged symmetrical metal ring structures 9 are printed on the upper surfaces of the three dielectric boards. The length a of the arrangement period remains unchanged; the waist length of the isosceles right triangle plate surface is 3.8×(1+50)=193.8mm, the electrical dimension is close to 10λ, and the base length ...
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 single-feed, three-beam, low-RCS super-surface angled reflector antenna. Independent and adjustable multi-beam characteristic of beam pointing is realized by loading a super-surface, and the scattering intensity of the antenna is effectively reduced. The single-feed, three-beam, low-RCS super-surface angled reflector antenna includes a three-sided angled structure formed by splicing of a first dielectric plate, a second dielectric plate and a third dielectric plate. Three metal plates are printed on the outer sides of the three dielectric plates respectively, symmetrical metal ring structures arranged periodically is printed on the inner side of each of the three dielectric plates, and the symmetrical metal ring structures are used for realizing the three-beam characteristic and reducing the RCS of the antenna. A spherical wave feed source is arranged outside the aperture surface of the three-sided angled structure and is fixed by a support rod connected with three vertexes of the aperture surface of the three-sided angled structure. Dimensional parameters of each metal ring are determined by a coordinate value of a position where each metal ring is located, a coordinate value of the spherical wave feed source as well as an incident angle of an incident electromagnetic wave. The antenna of the invention, having the characteristics of independent and adjustable beam pointing and low RCS, can be used in the field of wireless communication.
Description
technical field [0001] The invention belongs to the technical field of antennas, and relates to a multi-beam reflector antenna, in particular to a single-feed three-beam low RCS metasurface angle reflector antenna, which can be used in the field of wireless communication. [0002] technical background [0003] Multi-beam antenna technology can cover a wide range of transmission areas with high gain. The demand for satellite communications, radar reconnaissance, and electronic countermeasures continues to expand, and it has become an important development direction for the next generation of satellite antennas, multi-target tracking radars, and global electronic countermeasures systems. . Multi-beam antennas are generally divided into three categories according to the different beamforming principles, namely, planar phased array antennas, reflector antennas and lens antennas; according to the different feed sources and reflector forms, they can be divided into single-feed mult...
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
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to View More 
Login to View More