Circularly-polarized micro-strip array antenna with high isolation based on electric resonator
An electric resonator and high isolation technology, applied in the field of antenna technology and electromagnetic metamaterials, can solve the problems of high cross-section of circularly polarized microstrip array antennas, unfavorable large-scale mass production, high production costs, etc., to facilitate production and production , improve the isolation, the effect of low profile
Active Publication Date: 2018-11-30
河南安伏众电子科技有限公司
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Problems solved by technology
[0003] 2. The mutual coupling effect between array element antennas has always been an important factor restricting the performance of array antennas
However, the profile of the circularly polarized microstrip array antenna is high, the structure is complex, and the manufacturing cost is high, which is not conducive to mass production
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[0018] The present invention will be further described in detail below in conjunction with the embodiments and the accompanying drawings, but the embodiments of the present invention are not limited thereto.
[0019] The circularly polarized microstrip array antenna with high isolation based on the electric resonator of the present invention is made on a double-sided copper-clad dielectric substrate, and can be processed conveniently by using mature technologies such as circuit board corrosion, laser engraving or mechanical engraving. The core idea of the present invention is to use the negative equivalent dielectric constant characteristic of the electric resonator to prevent the propagation of surface waves and space waves between two circularly polarized unit antennas, thereby improving the isolation of the unit antennas.
[0020] figure 1 and figure 2 It is respectively the top view and the side view of the circularly polarized microstrip array antenna with high isolat...
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The invention discloses a circularly-polarized micro-strip array antenna with high isolation based on an electric resonator. The circularly-polarized micro-strip array antenna comprises two pairs of circularly-polarized unit antennas and the electrical resonator loaded between the two pairs of circularly-polarized unit antennas. The two pairs of circularly-polarized unit antennas and the electrical resonator are printed to the same dielectric substrate with the back face being provided with a metal floor. The circularly-polarized unit antennas adopt coaxial probes for feed, and irradiators ofthe circularly-polarized unit antennas are square micro-strip patches with the vertexes being loaded with circular patches of different radii. The electric resonator is constituted by a pair of back-to-back open resonant rings and two metallized via holes in short circuit with the metal floor. In a working frequency band, the electrical resonator presents a negative equivalent dielectric constant,electromagnetic coupling of the two pairs of circularly-polarized unit antennas can be effectively suppressed, and isolation of the unit antennas is improved. The circularly-polarized micro-strip array antenna has the advantages of being good in circular polarization radiation performance, high in unit isolation, low in structure profile and easy and convenient to manufacture.
Description
technical field [0001] The invention belongs to the field of antenna technology and electromagnetic metamaterial technology, in particular to a circularly polarized microstrip array antenna with high isolation based on an electric resonator. Background technique [0002] 1. The antenna is a key device for receiving and transmitting electromagnetic waves in a wireless communication system, and plays a role in converting between guided electromagnetic waves and radiated electromagnetic waves. Compared with linearly polarized antennas, circularly polarized antennas have the outstanding advantages of resisting rain and fog attenuation, suppressing multipath interference signals, and relaxing the installation orientation restrictions of receiving and transmitting antennas. The microstrip antenna is simple in structure, easy to manufacture, low in cost, low in profile, easy to realize multi-band, multi-polarization and circular polarization, and easy to integrate with active and p...
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Patent Timeline
Login to View More IPC IPC(8): H01Q1/38H01Q1/48H01Q1/50H01Q1/52H01Q21/00H01Q21/06
CPCH01Q1/38H01Q1/48H01Q1/50H01Q1/521H01Q21/0006H01Q21/06
Inventor 朱安福
Owner 河南安伏众电子科技有限公司