Novel small-size multi-input multi-output antenna

A multi-input, multi-output technology, applied in the directions of independent antenna unit combination, antenna coupling, radiating element structure, etc., can solve the problem of large mobile phone terminals, and achieve the effect of good isolation and compact structure

Inactive Publication Date: 2012-09-19
ZHEJIANG UNIV
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Problems solved by technology

Both methods can reduce the size of the MIMO antenna to a certain extent while ensuring better antenna isol...

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  • Novel small-size multi-input multi-output antenna
  • Novel small-size multi-input multi-output antenna
  • Novel small-size multi-input multi-output antenna

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Embodiment Construction

[0019] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0020] Such as figure 1 As shown, the MIMO antenna in the present invention consists of two single antenna structures 1-1 and one filter structure 1-3. The overall size of the antenna is 15mm x 14.5mm. Substrate 1-2 is made of FR-4 material commonly used in mobile phone terminals. Its dielectric constant is 4.4 and its structural parameters are 55mm x 50mm x 1.6mm. The ground 1-4 of the antenna is on the same plane as the antenna structure, and the size is 40 x 50mm. This coplanar design is conducive to the assembly of the antenna.

[0021] The structure of a single antenna is as figure 2 As shown, it is made up of T-shaped feeder 2-2 and deformed zigzag peripheral structure 2-1. The size of the T-shaped feeder is that the cross arm is 3.1mm long and 0.7mm wide, and the vertical arm is connected to the center of the cross arm, 5.8mm long and 0.4mm wide; the distan...

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Abstract

The invention provides a novel small-size multi-input multi-output antenna. Under the condition that the existing antenna meets a better antenna isolation degree, the size of a quarter of a work wavelength is still larger relatively to a cell phone terminal. The novel small-size multi-input multi-output antenna comprises a base, two single antennas and a filter structure, wherein the two single antennas and the filter structure are arranged on the base; and the two single antennas are located above the filter structure and are symmetrically arranged. The novel small-size multi-input multi-output antenna has a compact structure and can work under three frequency ranges including 2.42 GHz, 3.43 GHz and 5 GHz; and meanwhile, the antenna in each frequency range has good isolation degree, bandwidth and gain, meets the requirements of a cell phone on antenna miniaturization and an MIMO (Multi-Input Multi-Output) technology, and can be used for the cell phone terminal..

Description

technical field [0001] The invention belongs to the field of antenna technology and wireless communication, and relates to a multiple-input multiple-output (MIMO) antenna that can be used in a mobile phone terminal. Background technique [0002] Multiple input multiple output (MIMO) technology is a smart antenna technology, which refers to the use of multiple antennas to transmit and receive signals at both the transmitting end and the receiving end of the communication system to improve communication efficiency. quality and performance. The core concept of MIMO is to use the spatial freedom of multiple transmitting antennas and multiple receiving antennas to transmit and receive energy of the same power to effectively improve the spectral efficiency of the wireless communication system, so as to increase the transmission rate and improve the communication quality. Because MIMO technology can greatly increase the data throughput (throughput) and transmission distance of the...

Claims

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Application Information

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IPC IPC(8): H01Q1/36H01Q1/52H01Q21/30
Inventor 胡骏孔纯成何赛灵
Owner ZHEJIANG UNIV
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