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Small high-isolation double-notch UWB MIMO antenna

A high-isolation, double-notch technology, applied in antennas, slot antennas, antenna coupling, etc., can solve the problems that UWBMIMO antennas cannot achieve small size and small mutual coupling at the same time, achieve good diversity gain, resist multipath fading, The effect of high isolation

Active Publication Date: 2015-03-11
广州桑瑞科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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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

Method used

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  • Small high-isolation double-notch UWB MIMO antenna
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  • Small high-isolation double-notch UWB MIMO antenna

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Embodiment

[0028] see Figure 1-4 The floor used by the UWB MIMO antenna proposed by the present invention is composed of a rectangular floor 14 and two symmetrically placed first floor branches 15a and second floor branches 15b. The first antenna unit 16 a and the second antenna unit 16 b form a symmetrical structure and are placed on two corners of the substrate 11 . Since the excitation port 17a of the first antenna unit 16a and the excitation port 17b of the second antenna unit 16b are placed on the upper edge of the substrate 11 . The excitation port 17a and the excitation port 17b are connected to the first floor branch 15a and the second floor branch 15b respectively, instead of being directly connected to the rectangular main floor 14 .

[0029] The above-mentioned novel antenna unit placement method, on the one hand, since the first floor branch 15a and the second floor branch 15b also participate in radiation, they can be regarded as a part of the first antenna unit 16a and th...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q1/38H01Q1/52H01Q13/10H01Q21/00
Inventor 褚庆昕李健凤
Owner 广州桑瑞科技有限公司
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