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An electromagnetic bandgap structure, combination of electromagnetic bandgap structures and mobile terminal mimo antenna

An electromagnetic bandgap structure, mobile terminal technology, applied in the direction of radiation element structure, antenna support/installation device, etc., can solve the problems of lack of flexibility, difficult to adapt, etc., to increase radiation efficiency, easy to implement, and improve the gain. Effect

Inactive Publication Date: 2016-09-14
PEOPLES LIBERATION ARMY ORDNANCE ENG COLLEGE
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The above-mentioned schemes have their own disadvantages, but they lack flexibility and are difficult to adapt to the current situation of the rapid development of the communication industry

Method used

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  • An electromagnetic bandgap structure, combination of electromagnetic bandgap structures and mobile terminal mimo antenna
  • An electromagnetic bandgap structure, combination of electromagnetic bandgap structures and mobile terminal mimo antenna
  • An electromagnetic bandgap structure, combination of electromagnetic bandgap structures and mobile terminal mimo antenna

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Embodiment Construction

[0026] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0027] In order to improve the isolation of the antenna, the present invention provides an electromagnetic bandgap structure (or called an electromagnetic bandgap unit), which includes a metal patch, and the metal patch has a metal via hole. When using the electromagnetic bandgap structure, the metal vias can penetrate the dielectric plate, and the metal patches are connected to the metal bottom plate on the other side of the medium through the metal vias, thus forming a resonant electromagnetic bandgap structure. The axis of the metal via may not coincide with the center of the metal patch, so there is a certain offset. Preferably, the axis of the metal via hole is located in the middle of the metal patch.

[0028] Electromagnetic bandgap structure such as figure 1 As shown, in practice, the slits are etched for a square metal patch of 8mm×8mm, and the sli...

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Abstract

The invention relates to an electromagnetic band gap structure, an electromagnetic band gap structure combination and a mobile terminal MIMO antenna. The electromagnetic band gap structure comprises a metal patch provided with a metal via hole. The antenna comprises an antenna element, a metal bottom plate, a first dielectric layer and a second dielectric layer, and the metal bottom plate, the first dielectric layer, the second dielectric layer and the antenna element are stacked in sequence. The antenna is characterized in that the electromagnetic band gap structure is arranged between the first dielectric layer and the second dielectric layer, and the metal via hole penetrates through the first dielectric layer and is connected with the metal patch and the metal bottom plate. The electromagnetic band gap structure can be seen as a high-resistance circuit, and the loss of surface waves can be reduced, so that gains of the antenna are increased, and radiant efficiency is effectively increased; an existing conventional manufacturing technology for printed circuit boards (PCBs) is adopted, and the manufacturing technology for the antenna includes copper cladding and via hole forming and is the same as the manufacturing technology for the PCBs and easy to implement.

Description

technical field [0001] The invention relates to antennas, in particular to an electromagnetic bandgap structure, a combination of electromagnetic bandgap structures and a mobile terminal MIMO antenna. Background technique [0002] In order to cope with the demand of data, multiple-input multiple-output (MIMO) has been widely used. The MIMO system can greatly improve the capacity and spectrum utilization of the wireless communication system, and can effectively resist multipath fading. It has become one of the key technologies of today's mobile communication transmission system. Since the MIMO system requires multiple MIMO antennas to be installed on the mobile terminal, it is necessary to reduce the size of the antenna as much as possible, and to meet the corresponding electrical performance indicators such as bandwidth, gain, and isolation, in order to more accurately ensure transmission efficiency and radiation efficiency. . [0003] In order to improve the antenna isola...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q1/38H01Q1/24H01Q1/36
Inventor 谭志良毕军建石丹刘卓关闯褚杰马立云王玉明谢鹏浩
Owner PEOPLES LIBERATION ARMY ORDNANCE ENG COLLEGE
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