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A broadband mimo dual antenna based on adjustable impedance matching technology

An impedance matching, broadband technology, applied in antennas, antenna arrays, antenna grounding devices, etc., can solve problems such as antenna design difficulties, and achieve the effect of improving system capacity, transmission rate, and high reliability

Active Publication Date: 2017-02-08
XIDIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a wide-band MIMO dual antenna based on adjustable impedance matching technology, which overcomes the difficulties in the design of antennas with small size, multi-band, wide-band and good isolation effect in the prior art

Method used

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  • A broadband mimo dual antenna based on adjustable impedance matching technology
  • A broadband mimo dual antenna based on adjustable impedance matching technology
  • A broadband mimo dual antenna based on adjustable impedance matching technology

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Embodiment 1

[0036] In order to solve the problem in the prior art that it is difficult to design an antenna with small size, multi-band, wide-band and good isolation effect, the present invention provides such figure 1 , figure 2 , image 3 A wide-band MIMO dual antenna based on the adjusted impedance matching technology is shown, including a PCB board 1 and a medium 8 arranged on the PCB board 1, the two ends of the medium 8 are provided with an antenna body, and the antenna body is radiated by the antenna Part 2, feeding stub 3, grounding point 7 and feeding point 4; the antenna radiation part 2 is composed of a monopole 21, a coupling slot 22, a coupling stub 23, and a grounding stub 24; one end of the monopole 21 The inner side is connected with one end of the feeding branch 3, and the other end of the feeding branch 3 is connected with a downwardly bent feeding point 4 along the extension direction of the feeding branch 3; the outer side of the monopole 21 is provided with a coupli...

Embodiment 2

[0044]The geometric dimensions of the antenna used in the above-mentioned embodiment 1 are as follows: the material of the single-sided copper-clad PCB 1 is FR4, the thickness is 0.8mm, and the size is 65mm*125mm. The relative dielectric constant of the plastic case is 3, the loss tangent is 0.06, the thickness is 1mm, and the size is 67mm*127mm*11.8mm. The feeding part of the monopole 21 is 1.5mm in thickness and 12.75mm in length. The radiation surface part is composed of a 22mm*3mm rectangular patch and a 5.8mm turning and 5mm turning section. Among them, the 3mm bend at the end of the 22mm patch is Fold over to the side of the antenna.

[0045] The coupling slit 22 between the monopole 21 and the coupling branch 23 is 0.75mm. The coupling branch 23 consists of three parts: a 19mm*3mm rectangular patch (flat part) and a 5.2mm upward turn (vertical part) and then a 19.8mm turn (suspended part).

[0046] The grounding stub 24 is led out from the upper surface of the couplin...

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Abstract

The invention providers a broadband MIMO dual-antenna based on adjusting impedance matching technology, aiming at overcome the difficult design problem of an antenna which is small in size, multiple in band and good in isolation effects. The broadband MIMO dual-antenna comprises a PCB and a medium arranged on the PCB, wherein two ends of the medium are provided with antenna bodies; each antenna body is composed of an antenna radiation part, a feeder branch, a grounding point and a feeder point; the antenna radiation part is composed of a monopole, a coupling slot, a coupling branch, and a grounding branch. Compared with the prior art, the structure is simple, and small-size, broad-band and high performance work in multiple bands can be realized; a particle folding form is adopted, the structure of the single antenna can be effectively reduced, and miniature can be realized; isolation effects between antenna units are good, the mode of improving impedance matching is simple and effective; and the structure is compact, and a possibility is provided for realization of a 4*4 MIMO antenna array.

Description

technical field [0001] The invention belongs to the technical field of mobile phone antennas, and in particular relates to a broadband MIMO dual antenna based on adjusting impedance matching technology. Background technique [0002] In recent years, with the rapid development of wireless communication, consumers have increasingly urgent requirements for the miniaturization and high reliability of mobile devices, and the role of antennas as the basic components of mobile devices has become increasingly important. Therefore, the design of mobile terminal antennas was put on the agenda. [0003] Under the existing communication system, not only the coexistence of 2G and 3G, but also the arrival of LTE (Long Term Evolution) and 4G, this has resulted in the coexistence of multiple frequency bands in the communication system, and this situation requires mobile terminal antennas to be able to Try to cover as many frequency bands as possible. Traditional communication technology i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q1/38H01Q1/48H01Q5/10H01Q21/00
Inventor 史琰李可
Owner XIDIAN UNIV
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