Broadband omnidirectional oblique-polarization antenna for metal carrier
A metal carrier and oblique polarization technology, which is applied in the direction of antenna, antenna grounding device, radiation element structure, etc., can solve the problem that the antenna cannot be applied to the surface of the metal carrier
Active Publication Date: 2018-09-14
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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A broadband obliquely polarized omnidirectional antenna is proposed in the paper "Design of 45° Obliquely Polarized Omnidirectional Antenna", which realizes omnidirectional radiation and broadband obliquely polarized electromagnetic waves, but this antenna cannot be applied to the surface of a metal carrier
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[0030] A broadband omnidirectional obliquely polarized antenna for metal carriers, such as figure 1 As shown in (a), it includes two parts: a monocone antenna and a hollow cylindrical oblique polarizer positioned at the outside of the monocone antenna;
[0031] Such as figure 1 Shown in (b), be the sectional view of described monocone antenna; Described monocone antenna is copper, and its height is 21mm, and upper radius is 11.5mm, and lower radius is 1mm, and floor diameter is 100mm, can produce 6-18GHz Vertically polarized electromagnetic waves that radiate omnidirectionally.
[0032] The hollow cylindrical oblique polarizer includes 4 layers of coaxial polarization grids, and each layer of polarization grids is composed of metal strips formed by copper foils arranged in parallel covering the side of the hollow dielectric cylinder, wherein the first layer of polarization The angle between the metal strips in the grid and the floor of the monocone antenna is 0 degrees, the ...
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The invention, which belongs to the technical field of wireless communication, provides a broadband omnidirectional oblique-polarization antenna for a metal carrier. The oblique-polarization antenna is composed of a single cone antenna and a hollow cylindrical oblique polarizer arranged at the outer side the single cone antenna, wherein the axes of the single cone antenna and the hollow cylindrical oblique polarizer are overlapped and the interval is 0.1lambda0 to 0.3lambda0. The hollow cylindrical oblique polarizer consists of n layers of coaxial polarization gratings; each layer of polarization grating is formed by metal strips that are arranged in parallel and cover the hollow dielectric cylinder side; the n layers of coaxial polarization gratings are expressed successively from insideto outside as follows: a first layer of polarization grating, a second layer of polarization grating, ..., and an nth layer of polarization grating; and the included angles between the metal strips inthe n layers of coaxial polarization gratings and the floor of the single cone antenna is 0, theta1, theta2, ...thetan-2, and thetan-1, wherein the thetan-1 is equal to 40 to 60 degrees and is largerthan thetan-2 larger than the next included angle and the so on until the theta2 is larger than theta1 larger than 0. According to the invention, the single cone antenna generates the broadband omnidirectional radiation electromagnetic wave and the grounded oblique polarizer transforms the vertical-polarization electromagnetic wave into the oblique-polarization electromagnetic wave. The characteristics of broadband and omnidirectional radiation are realized.
Description
technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a broadband omnidirectional obliquely polarized antenna for a metal carrier. Background technique [0002] In wireless communication, the antenna is mainly used to radiate the electrical signal in the transmitter to the free space, or convert the electromagnetic wave signal in the space into an electrical signal and transmit it to the receiver. The transmitting antenna mainly controls the electromagnetic wave power distribution in the free space and the polarization mode of the electromagnetic wave, while the signal processing is completed by other modules in the communication system. With the rapid development of electronic technology and the constant change of the electromagnetic signal environment, the requirements for antennas are getting higher and higher. Require. Among them, in some application environments such as indoor base stations, moving ...
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Login to View More IPC IPC(8): H01Q15/24H01Q1/36H01Q1/48
CPCH01Q1/36H01Q1/48H01Q15/242
Inventor 文成纲宗显政黄麒力聂在平
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA