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4G MIMO mobile phone antenna based on liquid metal

A liquid metal and mobile phone antenna technology, applied in the field of mobile communication MIMO antennas, can solve the problems of antenna frequency deviation, achieve adjustable frequency, reduce difficulty and cost, and reduce production cost and difficulty

Active Publication Date: 2018-04-20
BEIHANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are certain difficulties in the processing of the liquid metal channel, and the PMMA channel material will also cause a certain deviation in the frequency of the antenna.

Method used

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  • 4G MIMO mobile phone antenna based on liquid metal
  • 4G MIMO mobile phone antenna based on liquid metal
  • 4G MIMO mobile phone antenna based on liquid metal

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Embodiment Construction

[0028] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0029] Design of the present invention is as follows: figure 1 It is a structural schematic diagram of a 4G MIMO mobile phone antenna based on liquid metal in the present invention. It includes a planar inverted F antenna 1 , a planar monopole antenna 2 , a length-adjustable liquid metal strip 3 , L-shaped metal ground branches 4 and 5 , and a metal ground body 6 .

[0030] The planar inverted-F antenna 1 is used as the auxiliary antenna, and the planar monopole antenna 2 is used as the main antenna. Using the characteristics of the surface current distribution of the two antennas can greatly reduce the degree of mutual coupling between the two antennas and reduce the difficulty of antenna design. The planar inverted F antenna 1 is adjustable in the low frequency band. In the low frequency band of 698-960MHz, the resonance frequency of the pla...

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PUM

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Abstract

The invention relates to an adjustable 4G MIMO mobile phone antenna based on liquid metal. The adjustable 4G MIMO mobile phone antenna comprises a planar monopole antenna, a planar inverted F antenna,a liquid metal channel, liquid metal, a metal ground body and two L-shaped metal ground branches, wherein the monopole antenna is a main antenna, and can operate in eight frequency bands such as LTE700, GSM850, GSM900, DCS, PCS, UMTS, LTE2300 and LTE2500. The planar inverted F antenna is an auxiliary antenna, and can cover five high frequency bands, higher than 1 GHz, such as DCS, PCS, UMTS, LET2300 and LTE2500, and inside the LTE700, GSM850 AND GSM900 frequency bands lower than 1 GHz, the resonant frequency can be changed by adjusting the length of the liquid metal. The isolation of the twoantennas inside the working frequency band is higher than 10 dB, the efficiency of the antennas can reach more than 60% in the low frequency bands and can reach more than 80% in the high frequency bands, and the adjusting length of the liquid metal is within 20 mm, so that fundamental requirements of the mobile phone antenna can be met. The antenna has the advantages of wide covering frequency bands, simple structure, easy manufacturing, high antenna efficiency, good isolation and the like.

Description

technical field [0001] The invention relates to the technical field of mobile communication MIMO antennas, and specifically relates to a reconfigurable 4G MIMO mobile phone antenna based on liquid metal. Background technique [0002] With the development of communication technology, the requirements for the information transmission rate of mobile phone antennas are getting higher and higher. The application of MIMO technology can double the capacity of wireless channels. Without increasing the communication bandwidth, MIMO technology can double the increase. Spectrum utilization. At present, research on MIMO antennas mainly involves high-frequency bands with frequencies higher than 1 GHz, and there are relatively few researches on MIMO antenna decoupling technology in LTE700 / GSM850 / GSM900 frequency bands lower than 1 GHz. Usually, the two antennas in the two-port MIMO antenna are located on the two short sides of the circuit board of the mobile phone. The research based on ...

Claims

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Application Information

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IPC IPC(8): H01Q5/10H01Q5/20H01Q5/321H01Q1/48H01Q1/52H01Q21/28H01Q1/24H01Q1/36
CPCH01Q1/242H01Q1/364H01Q1/48H01Q1/521H01Q5/10H01Q5/20H01Q5/321H01Q21/28
Inventor 高海强王正鹏武建华
Owner BEIHANG UNIV
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