High isolation wireless data card antenna supporting mimo technology

Abstract

The invention discloses a high-isolation wireless data card antenna supporting MIMO technology. A coplanar waveguide upper metal floor and a common The metal floor under the planar waveguide is provided with two parallel coplanar waveguide feeders on the same plane as the upper metal floor of the coplanar waveguide. At the ends of the two coplanar waveguide feeders, there are radiation patches coupled with the waveguide feeder to form two antennas. There is a high-resistance line between the upper radiation patches, which improves the isolation between the two antennas. The two upper radiation patches have short-circuit pins respectively connected to the connecting wires on the metal floor under the coplanar waveguide. The invention has the advantages of reducing the geometric size of a single antenna, using additional high-resistance lines between multiple antennas, improving the isolation between multiple antennas; expanding the frequency bandwidth of the antennas; easy to achieve conformal or embedded Type design, low manufacturing cost.

Description

Technical field [0001] The invention relates to a wireless data card antenna, in particular to a high-isolation wireless data card antenna supporting MIMO technology. Background technique [0002] The future wireless network is bound to be a converged network integrating IP, broadband, mobile, and multimedia. As the latest broadband wireless access technology based on the IEEE 802.16 series of standards, WiMAX has the characteristics of IP, mobility, broadband and multi-service support, and represents the future development direction of high-speed mobile Internet. Therefore, the current construction of wireless cities in the world basically uses the wireless mesh technology of WiFi+WiMax, which is also the most basic technology of wireless networks. In the future, this technology will not be replaced by new wireless technologies. The main advantages of WIMAX this new technology are reflected in the following aspects: [0003] First of all, WiMAX has a fast network constructio...

AI Technical Summary

Problems solved by technology

In order to ensure the isolation between the two antennas, there are mainly two layout methods currently used. One is that the circuit part of the data card is separated from the antenna, and the external antenna is connected to the circuit board through a long coaxial cable. In this case, the data card In fact, it is a kind of integrated design with a notebook computer; and for a detachable data card, the arrangement of two antennas is often one on the top and one on the side, which greatly restricts the miniaturization of the wireless data card and becomes The main bottleneck of the development of wireless data card "U" disk

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