Method for greatly improving antenna isolation and antenna

A technology with large amplitude and isolation, applied in the direction of antenna coupling, etc., can solve the problems of difficult application of mobile communication equipment and limited improvement of isolation, and achieve the effect of outstanding performance advantages and good isolation

Inactive Publication Date: 2015-10-21
SHANGHAI AMPHENOL AIRWAVE COMM ELECTRONICS CO LTD
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

The first two measures require a lot of space to place the antenna, so it is difficult to apply to mobile communication devices, and the third measure has limited improvement in isolation

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  • Method for greatly improving antenna isolation and antenna
  • Method for greatly improving antenna isolation and antenna
  • Method for greatly improving antenna isolation and antenna

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Embodiment Construction

[0036] The present invention will be described in detail below in terms of specific embodiments in conjunction with the accompanying drawings. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It is to be noted that other embodiments may be utilized or structural and functional modifications may be made to the embodiments set forth herein without departing from the scope and spirit of the invention.

[0037] In the traditional antenna design, each antenna port feeds independently. When the distance between the antennas is relatively close, due to the coupling capacitance between the radiating conductors, the coupling degree between the antennas increases with the decrease of the distance. Therefore, when the antenna At small distances, the isolation between antennas becomes poor. In the experiment, when the distance between the two antennas is close, two kinds of coupling ...

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Abstract

The present invention provides a method for greatly improving antenna isolation and an antenna. The method is characterized by feeding an in-phase signal and an anti-phase signal in antenna radiators at the same time, thus differential-mode radiation and common-mode radiation generated in the antenna radiators at the same time can achieve improvement of the antenna isolation. The antenna comprises antenna radiators, a mode separating drive circuit, a first radiation feed source and a second radiation feed source; wherein one end of the first radiation feed source is connected with the mode separating drive circuit, the other end of the first radiation feed source is grounded; one end of the second radiation feed source is connected with the mode separating drive circuit, the other end of the second radiation feed source is grounded; the mode separating drive circuit is also connected with the antenna radiators; the mode separating drive circuit enables an electric signal of the first radiation feed source to be inputted into the antenna radiators in the form of in-phase signal, so as to generate common-mode radiation; and the mode separating drive circuit simultaneously enables an electric signal of the second radiation feed source to be inputted into the antenna radiators in the form of anti-phase signal, so as to generate differential-mode radiation. Therefore, the antenna isolation is improved through double radiation modes.

Description

technical field [0001] The invention relates to an antenna, in particular to a method and an antenna for greatly improving the isolation of the antenna. Background technique [0002] With the development of communication technology, more and more antennas need to be integrated on the same device. The coupling between antennas will lead to many problems such as signal interference and efficiency reduction. Therefore, how to increase the isolation of antennas in close range has always been It is a hotspot of engineering research. Traditional measures to increase antenna isolation include: increasing the distance between the transmitting and receiving antennas, orthogonal polarization and balanced line isolation (patent: US7688273B2). The first two measures require a lot of space to place antennas, so it is difficult to apply to mobile communication devices, and the third measure has limited improvement in isolation. Facing the demand for more and more integrated electronic d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/52
Inventor 胡沥
Owner SHANGHAI AMPHENOL AIRWAVE COMM ELECTRONICS CO LTD
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