High-isolation dual-operating-state dual-polarized ultra wide band MIMO antenna
A high-isolation, double-working technology, applied in the direction of antenna, antenna coupling, antenna components, etc., can solve the problem of not working normally in other modes, achieve high use value, improve the application range, and small size effect
Inactive Publication Date: 2018-02-23
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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[0003] Two differential-mode feeds reported in the literature "Compact, high isolation and dual-polarized differential dual-notched UWB-MIMO slot antenna" and "Compact Differential Band-Notched Stepped-Slot UWB-MIMO Antenna with Common-Mode Suppression" Antennas also have a high degree of isolation, but they have a common problem, that is, both antennas can only work under the condition of differential mode excitation, and cannot work normally in other modes, such as working in a single-port feeding state
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[0018] The present invention will be described in more detail below in conjunction with the accompanying drawings and embodiments.
[0019] A high-isolation dual-working state dual-polarization ultra-wideband MIMO antenna, the overall structure diagram is as follows figure 1 As shown, the front and back schematic diagrams of the antenna structure are shown in figure 2 and image 3 As shown, it includes a rectangular insulating dielectric substrate 1, a radiating surface, a rectangular annular metal ground plate 2 and a rectangular patch 3; the radiating surface includes four trapezoidal radiating units 4, four rectangular metal patches 5 and X-shaped metal strips Belt 6; rectangular holes 7 of the same size are respectively opened on the four sides of the rectangular annular metal grounding plate 2; floor slits 8 are opened on the diagonal positions of the rectangular annular metal grounding plate 2; There is a patch slit 9 at the diagonal position of the sheet 3;
[0020]...
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Abstract
The invention provides a high-isolation dual-operating-state dual-polarized ultra wide band MIMO antenna, which has the advantages of very high isolation and dual polarization, realizes dual-mode operation and has smaller size. The high-isolation dual-operating-state dual-polarized ultra wide band MIMO antenna is composed of a rectangular insulating dielectric substrate, a radiation surface, rectangular ring-shaped metal grounding plates and rectangular patches, wherein the radiation surface is formed by four symmetrical trapezoidal radiation units and feeders, the back surface is a rectangular ring-shaped floor, and the offset of working band of the antenna is realized through adjusting the rectangular patches in the middle of the back part; the isolation in an antenna single-feed state is improved through introducing X-shaped narrow metal bands on the front surface and the X-shaped slit in the back part; and the final antenna size is 32*32 mm<2>, and the MIMO antenna can operate under the conditions of difference-mode input and high isolation and can operate normally in a single-feed input state, thereby showing a dual-mode operating state.
Description
technical field [0001] The invention belongs to the technical field of microwave antennas, and in particular relates to a high-isolation dual-working-state dual-polarization ultra-wideband MIMO antenna. Background technique [0002] Multiple-input and multiple-output technology (MIMO) optimizes the multipath wireless channel, transmission and reception as a whole, so as to achieve high communication capacity and spectrum utilization, and is a near-optimal combination of space and time domain diversity. And interference cancellation processing, these advantages make MIMO technology receive more and more attention in recent years. Ultra Wide Band (UWB, UltraWide Band) technology is a new type of wireless communication technology. The U.S. Federal Communications Commission released the 3.1-10.6GHz bandwidth range in 2002 as ultra-wideband (UWB). UWB technology has many advantages such as wide bandwidth, high data rate wireless transmission, high capacity and low power consumpt...
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Login to View More IPC IPC(8): H01Q1/38H01Q1/50H01Q1/52
CPCH01Q1/38H01Q1/50H01Q1/521
Inventor 朱兆君宋泽林陈尉鹏杨德梦曹璐
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA