Small high-isolation double-notch UWB MIMO antenna

Abstract

The invention relates to a small high-isolation double-notch UWB (Ultra-wide Bandwidth) MIMO (Multiple Input Multiple Output) antenna, which comprises a main floor board, a first floor board limb, a second floor board limb, a first metal strap, a second metal strap, a third metal strap, a first antenna unit, a second antenna unit, a first tail end opening gap and a second tail end opening gap, wherein the third metal strap is used for connecting the two floor board limbs. Due to the application of the two floor board limbs, a first excitation port and a second excitation port can be placed on the upper edge of a basal board, so that the impedance bandwidth of the antenna units can be effectively improved, and the isolation between the two antenna units is also effectively increased. The technical problem that the current UWB MIMO antenna cannot simultaneously realize small size, small cross coupling and wide bandwidth is solved. The first metal strap and the first antenna unit form a first annular loop, the second metal strap and the second antenna unit form a second annular loop, so that the high frequency notch is realized. Due to the application of the first tail end opening gap and the second tail end opening gap, the low frequency notch is realized. Therefore, the double-notch function is realized.

Description

technical field [0001] The present invention relates to the technical field of UWB (ultra-wideband, ultra-wideband) MIMO (Multiple-Input Multiple-Output, multiple-input multiple-output) antenna, and more specifically, relates to a small-sized high-isolation dual-notch UWB MIMO antenna. Background technique [0002] With the advent of the mobile broadband era, wireless networks are rapidly developing towards multi-frequency and multi-mode. The existing antenna system is also facing many challenges due to limited site space, site load-bearing restrictions, and inability to support new technology evolution. Most operators have put forward the demand for the transformation of the antenna system. The new antenna not only needs to support multi-frequency and multi-standard, but also needs to maintain the same size, and can support new technological evolution such as multiple-input multiple-output (MIMO, Multiple-Input-Multiple -Output), so as to cooperate with the main device to i...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the technical problem that the existing UWB MIMO antenna cannot realize small size, small mutual coupling, wide bandwidth, and notch function at the same time, the present invention proposes a small, high isolation, double-notch UWB MIMO antenna, which can effectively improve The impedance bandwidth of the antenna unit realizes the double notch function and can effectively increase the isolation between the two antenna units

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