A dielectric resonator antenna and a method for obtaining a radiation pattern using the antenna
A technology of dielectric resonator and antenna, applied in the direction of resonator, radiating element structure, antenna grounding switch structure connection, etc.
Active Publication Date: 2020-04-24
NINGBO UNIV
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Problems solved by technology
However, the dielectric resonator antenna feeds the monopole and a rectangular opening through the microstrip line, and the feeding structure is single, which can only generate a radiation pattern in a single direction (about 130 degrees), and cannot realize beam scanning at all angles. Unable to meet the needs of modern wireless communication systems for beam scanning antennas
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[0033] Example: such as Figure 1 to Figure 4 As shown, a dielectric resonator antenna includes a dielectric substrate 1, a dielectric resonator and a monopole 2. A metal ground layer with the same shape and size is attached to the upper surface of the dielectric substrate 1. The cross section of the dielectric substrate 1 is positive six Hexagonal, the dielectric resonator is formed by opening a cavity 4 that penetrates up and down on a cylinder 3 with a regular hexagonal cross section. The cross section of the cavity 4 is also a regular hexagon. The central axis of the cavity 4 and the center of the cylinder 3 The axis and the center of the dielectric substrate 1 are on a straight line, the ratio of the side length of the dielectric substrate 1, the side length of the cylinder 3 to the side length of the cavity 4 is 1:0.68:0.35, and the height of the cylinder 3 is the free space wavelength 1 / 4, the thickness of the dielectric substrate 1 is 0.64mm, and the thickness of the m...
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The invention discloses a dielectric resonator antenna and a method of acquiring a radiation pattern by adopting the antenna. In the dielectric resonator antenna, the cross section of a dielectric substrate is set to be a regular hexagon; a dielectric resonator is formed through opening a vertically-passing cavity in a regular hexahedron-shaped cylinder; a dividing groove is arranged on each of six angular bisectors of a metal grounding layer; the six dividing grooves are intersected and connected at the center of the metal grounding layer; the six dividing grooves have the same structure andthe same size; the six dividing grooves divide the metal grounding layer to six grounding units which have the same size and are mutually independent; and the second dividing groove of each dividing groove is provided with two PIN diodes. The dielectric resonator antenna and the method of acquiring the radiation pattern by adopting the antenna have the advantages that the states of the 12 PIN diodes are controlled through controlling the voltage applied to the six independent grounding units, six radiation patterns in different directions can be obtained and stacked, and a radiation pattern with 360-degree omni-directional angle coverage can be obtained.
Description
technical field [0001] The invention relates to a dielectric resonator antenna, in particular to a dielectric resonator antenna and a method for obtaining a radiation pattern by using the antenna. Background technique [0002] In recent years, with the rapid development of wireless communication technology, the requirements for antennas are getting higher and higher. Since Dielectric Resonator antenna (DRA) was proposed in 1983, it has received a lot of research and made significant progress. Dielectric resonator antennas have broad application prospects in modern wireless communication systems due to their low loss, high radiation efficiency, and high design flexibility. [0003] An existing dielectric resonator antenna working at 2.45GHz mainly includes a dielectric substrate, a dielectric resonator (Dielectric Resonator, DR) and a monopole. The dielectric substrate is rectangular, and the length of the long side of the dielectric substrate is 1.26 of the length of the wi...
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IPC IPC(8): H01Q1/36H01Q1/38H01Q1/50H01P7/10
CPCH01P7/10H01Q1/36H01Q1/38H01Q1/50
Inventor 华昌洲刘梦
Owner NINGBO UNIV