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Decoupling device

A technology of decoupling device and coupling unit, which is applied in the field of decoupling devices to achieve the effect of improving antenna performance and solving mutual coupling

Inactive Publication Date: 2017-12-29
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a decoupling device to solve the problem that the existing ground branch structure cannot effectively solve the mutual coupling problem between multi-band antennas

Method used

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Embodiment Construction

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0031] see image 3 As shown, the embodiment of the present invention provides a decoupling device, which adopts a ground branch structure and is arranged between two antennas.

[0032] Wherein, the decoupling device includes a coupling unit 1 and a tunable unit 2 . The coupling unit 1 includes a horizontal branch 11 and a vertical branch 12 , the middle point of the horizontal branch 11 is connected to one end of the vertical branch 12 , and the othe...

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Abstract

The present invention provides a decoupling device. The decoupling device is disposed between two antennas and comprises a coupling unit and a tunable unit; the coupling unit comprises a horizontal branch and a vertical branch; the intermediate point of the horizontal branch is connected with one end of the vertical branch; the other end of the vertical branch is grounded; and the tunable unit is disposed on the coupling unit and is use for changing the electrical length of the horizontal branch of the coupling unit. With the decoupling device provided by the present invention adopted, the problem of mutual coupling between the multi-band antennas can be solved, a plurality of frequency bands can be decoupled, and the performance of the antennas can be improved.

Description

technical field [0001] The present invention relates to the technical field of antennas, in particular to a decoupling device. Background technique [0002] At present, when solving the mutual coupling problem between antennas in a handheld mobile terminal, a ground branch structure is often used for decoupling. [0003] Specifically, see figure 1 and figure 2 As shown, a simplified single-stage antenna is used to illustrate the method of ground branch decoupling. see figure 1 As shown, the two monopole antennas (i.e. monopole antenna A and monopole antenna B) are parallel to each other, and the distance is relatively close. In the actual implementation, the electrical length of the two monopole antennas is λ / 4, and the two The pole antennas are the same length. In this way, there is relatively large mutual coupling directly between the two antennas. If the monopole antenna A is fed with a sinusoidal signal, the current on it is I1; since the monopole antenna B is clo...

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Application Information

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IPC IPC(8): H01Q1/50H01Q1/52
CPCH01Q1/50H01Q1/52H01Q1/521
Inventor 刘锋昱
Owner ZTE CORP
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