Coplanar Waveguide Monopole Multiple-Input Multiple-Output Antenna Embedded in Dual Triangular Slots

Abstract

The invention provides a double-triangular-groove embedded coplanar waveguide monopole multiple-input and multiple-outlet antenna, and relates to multiple-input and multiple-outlet antennas. The antenna is provided with a medium substrate, a radiation monopole, an upper surface good conductor layer, and a lower surface good conductor layer, the upper surface good conductor layer is provided with two isosceles triangle grooves, the center lines of the two isosceles triangle grooves are at the same axis, the two isosceles triangle grooves are distributed in an inverse manner with an opposite angle of 180 degrees, the radiation monopole is embedded in the lower isosceles triangle groove, the radiation monopole is provided with an upper narrow rectangular patch and a lower wide rectangular patch, two gradually-changing slit grooves with the same structures are distributed at two side edges of the radiation monopole in bilateral symmetry, the gradually-changing slit grooves are through from the bottom edge of the lower isosceles triangle groove to the bottom edge of the upper surface good conductor layer, the gradually-changing slit grooves comprise upper wide rectangular grooves and lower narrow rectangular grooves, the lower surface good conductor layer is provided with a gradually-changing microstrip line in the horizontal direction, the gradually-changing microstrip line inwardly extends along the horizontal direction from side edges of the medium substrate, and the gradually-changing microstrip line is also provided with a wide rectangular patch and a narrow rectangular patch.

Description

technical field [0001] The present invention relates to a multiple-input multiple-output (MIMO) antenna, in particular to an hourglass-shaped gradient coupling dual antenna for wireless local area network (WLAN) using monopole and triangular orthogonal eigenmode current excitation to achieve double-fed high isolation. The coplanar waveguide monopole MIMO antenna is embedded in the triangular slot. Background technique [0002] As an important application in the new generation communication system, MIMO (Multiple-Input Multiple-Output) technology can maximize the use of uncorrelated sub-channels of the space wireless communication system without occupying additional spectrum bandwidth and increasing the transmission power. Different streams of information are transmitted. This will double the channel capacity of the wireless system, thereby improving the information transmission rate of the wireless communication system, so the design of high-isolation antennas has also beco...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects of the current MIMO antenna in terms of unit or port isolation structure, and focus on solving the problem of decoupling and decorrelation using the special structure of the antenna unit body itself without adding additional decoupling network circuits and without loading parasitic units. In order to realize the high isolation port performance requirements of the wireless communication application system for the MIMO antenna, provide a better polarization diversity performance, effectively expand the working frequency band, and continue to optimize and realize the hourglass shape of the ultra-wideband (UWB) system Gradiently Coupled Dual Triangular Slot Embedded Coplanar Waveguide Monopole MIMO Antenna

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