Line source directional radiation augmentor
A technology of directional radiation and booster, applied in the direction of antennas, electrical components, etc., can solve problems such as difficult implementation, increased manufacturing cost, and difficult production, and achieve the effects of convenient operation, large radiation direction coefficient, and simple structure
Inactive Publication Date: 2009-12-09
NANJING UNIV
View PDF0 Cites 4 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Improving the antenna itself will lead to a complex geometric structure of the antenna, making it difficult to realize
However, the antenna array method will make the antenna bulky, and the manufacturing cost will increase significantly.
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
[0013] Such as figure 1 As shown, the line source directional radiation enhancement device according to the present invention mainly includes a parabolic column made of left-handed material, a hollow cylinder where a line source can be placed at its focal point, and the tail of the parabolic column is at the center of the circle at the focal point. The circular arcs are connected and coated with a thin metal layer on the outside of the circular arcs. O in the figure 1 is the focus of the parabolic column and the center of the hollow cylinder, O is the apex of the parabolic column, r is the radius of the hollow cylinder, R is the radius of the arc connected to one side of the parabolic column, and d is the thickness of the thin metal layer coated outside the arc. The line source used in the present invention only needs to have the characteristics of two-dimensional radiation. After adopting the device, when the line source is placed at the center of the hollow cylinder, there...
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 discloses a line source directional radiation augmentor, which comprises a parabolic cylinder made from left-handed materials; wherein, the focused part of the parabolic cylinder is provided with a hollow cylinder capable of arranging the line source; the end of the parabolic cylinder uses circular arc homocentric with the inner cylinder to carry out transition, and the external side of the circular arc is coated with metal thin layers; the line source is arranged in the inner hollow cylinder close to the center of the circle. By using the invention, the line source arranged in the hollow cylinder close to the center of the circle has obvious radiation reinforcing phenomenon and the directional property factor thereof is above 35. When the structure size of the device is big enough, the directional property factor thereof can be above 130, which is much larger than the directional property factor 1 in the method which does not use the device in the invention. The invention can realize radiation reinforcement in certain direction without improving antenna construction and arrangement, which is simple in operation and can design for the radiation augmentor structure according to the directional property factor.
Description
technical field [0001] The invention relates to the field of radio transceiver antennas, in particular to a line source directional radiation enhancing device. Background technique [0002] Antennas can be seen everywhere in people's daily life, such as mobile phones, satellite navigation, etc. In radio transceiver systems, antennas are important devices that radiate to space or receive electromagnetic waves from space, and are an essential part of radio communication systems. The directivity of the antenna refers to the ability of the antenna to radiate electromagnetic waves in a certain direction, and the directivity is one of the important parameters to measure the quality of the antenna. With the directivity of the antenna, it can be equivalent to improving the efficiency of the transmitter or receiver to a certain extent, and making it have a certain degree of confidentiality and anti-interference. The radiation directivity coefficient of an antenna is a very important...
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): H01Q19/15
Inventor 邹大用伍瑞新
Owner NANJING UNIV