WO2014183342A1 - Procédé de disposition de terminal et d'antenne permettant de réduire un taux d'absorption spécifique - Google Patents

Procédé de disposition de terminal et d'antenne permettant de réduire un taux d'absorption spécifique Download PDF

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Publication number
WO2014183342A1
WO2014183342A1 PCT/CN2013/081171 CN2013081171W WO2014183342A1 WO 2014183342 A1 WO2014183342 A1 WO 2014183342A1 CN 2013081171 W CN2013081171 W CN 2013081171W WO 2014183342 A1 WO2014183342 A1 WO 2014183342A1
Authority
WO
WIPO (PCT)
Prior art keywords
antenna
shunt
main communication
communication antenna
main
Prior art date
Application number
PCT/CN2013/081171
Other languages
English (en)
Chinese (zh)
Inventor
陈亚军
沈俊
程守刚
Original Assignee
中兴通讯股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2014183342A1 publication Critical patent/WO2014183342A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
    • H01Q1/245—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with means for shaping the antenna pattern, e.g. in order to protect user against rf exposure

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a terminal and antenna layout method for reducing an electromagnetic wave absorption ratio. Background technique
  • SAR Specific Absorption Rate
  • SAR is used to describe the electromagnetic wave energy absorption ratio of a mobile phone or a wireless product. It is defined as: In the external electromagnetic field, an inductive electromagnetic field is generated in the human body. Since all kinds of organs in the human body are electrical consumers, the electromagnetic field in the body will generate electric current, which will absorb and dissipate electromagnetic energy. SAR is the electromagnetic power absorbed or consumed by human tissue per unit mass, with the miniaturization of mobile terminals. The development trend of ultra-thinning, the size of the antenna is getting smaller and smaller, but its electrical performance needs to meet the requirements of omnidirectional total radiated power, omnidirectional sensitivity, specific absorption ratio, etc., and it is difficult to reduce the total radiated power. SAR value.
  • the present invention provides a method of reducing electromagnetic wave absorption ratio and antenna layout to reduce the SAR value of a communication device by adding a shunt antenna.
  • the embodiment of the invention provides a terminal for reducing the electromagnetic wave absorption ratio, comprising a circuit board and a main communication antenna disposed at one end of the circuit board, and further comprising a shunt antenna disposed at the same end of the circuit board as the main communication antenna, the main communication antenna and the shunt
  • the antennas are arranged opposite each other and are coupled back to each other.
  • the primary communication antenna is opposite in direction to the shunt antenna current.
  • the shunt antenna communicates as a functional antenna.
  • the shunt antenna is located in a hot spot of the electromagnetic wave absorption ratio SAR of the main communication antenna.
  • the shunt antenna and the main communication antenna resonate in an electromagnetic wave absorption ratio SAR hot spot region of the main communication antenna.
  • An embodiment of the present invention further provides an antenna layout method, including the following steps: A shunt antenna that is reversely coupled to the main communication antenna is disposed at one end of the circuit board where the main communication antenna is disposed; the shunt antenna is disposed opposite to the main communication antenna and has a current direction opposite.
  • the shunt antenna communicates as a functional antenna.
  • the primary shunt antenna is located in a hot spot of the electromagnetic wave absorption ratio SAR of the main communication antenna.
  • the shunt wire and the main antenna resonate in an electromagnetic wave absorption ratio SAR hot spot region of the main communication antenna.
  • the terminal and the antenna layout method for reducing the electromagnetic wave absorption ratio proposed by the embodiment of the present invention by providing a shunt antenna coupled with the reverse coupling in the vicinity of the main communication antenna, thereby weakening the magnetic field around the main communication antenna and reducing the field strength of the main communication antenna, The field strength is proportional to the SAR value.
  • the SAR value decreases, that is, by increasing the shunt antenna that is inversely coupled with the main communication antenna, the SAR value is reduced.
  • FIG. 1 is a schematic structural view of a preferred embodiment of a terminal for reducing electromagnetic wave absorption ratio according to the present invention.
  • the implementation, functional features, and advantages of the present invention will be further described with reference to the accompanying drawings.
  • DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The technical solutions of the present invention will be further described below with reference to the accompanying drawings and specific embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
  • Fig. 1 there is shown a schematic structural view of a preferred embodiment of a terminal for reducing electromagnetic wave absorption ratio according to the present invention.
  • the terminal for reducing the electromagnetic wave absorption ratio proposed in the embodiment includes a circuit board 10 and a main communication antenna 20 disposed at one end of the circuit board 10, and further includes a shunt antenna 30 disposed at the same end of the circuit board 10 as the main communication antenna 20, and a main communication antenna 20 is disposed opposite to the shunt antenna 30 and coupled to each other.
  • the shunt antenna 30 is reversely coupled to the main communication antenna 20, weakens the magnetic field around the main communication antenna 20, and reduces the field strength around the main communication antenna 20.
  • the conductivity of the body, ⁇ is the density of the object being excited. It is shown that the SAR of the antenna is proportional to the field strength in the vicinity thereof, and when the field strength is decreased, the SAR value is decreased, and since the shunt antenna 30 opposite to the direction is increased in the vicinity of the main communication antenna 20, the vicinity of the main communication antenna 20 is reduced. The field strength further reduces the SAR value.
  • the terminal for reducing the electromagnetic wave absorption ratio proposed in the embodiment provides a shunt antenna 30 coupled to the reverse side of the main communication antenna 20, thereby weakening the magnetic field around the main communication antenna 20 and reducing the field strength of the main communication antenna 20, thereby making the terminal The field strength is proportional to the SAR value.
  • the SAR value decreases, that is, by increasing the shunt antenna 30 that is inversely coupled to the main communication antenna 20, the SAR value is lowered.
  • the main communication antenna 20 and the shunt antenna 30 have opposite current directions. Since the current direction of the main communication antenna 20 and the shunt antenna 30 are opposite, and the field strength near the antenna is related to the current on the antenna, the magnetic strengths near the main communication antenna 20 and the shunt antenna 30 can cancel each other, and the main communication antenna 20 is reduced.
  • the field strength is near the shunt antenna 30.
  • the preferred scheme is that the main communication antenna 20 and the shunt antenna 30 are arranged in parallel, and the coupling effect is the best.
  • the main communication antenna 20 and the shunt antenna 30 can be disposed at the same end of the circuit board 10, and the main communication antenna 20 is parallel to the end of the shunt antenna 30, so that the main communication antenna 20 and the shunt antenna 30 have opposite current directions. Since the current of the shunt antenna 30 and the main communication antenna 20 are opposite, that is, the shunt antenna 30 and the main communication antenna
  • the direction of the antenna can be changed by changing the feeding pin and the shorting pin, and the shunt antenna 30 and the main communication antenna 20 generate a reverse coupling effect to reduce the field near the main communication antenna 20. Strong, the field strength is proportional to the SAR, which further reduces the SAR value.
  • the shunt antenna 30 can communicate as a functional antenna.
  • the shunt antenna 30 can communicate as a functional antenna to implement additional functions of the communication terminal, such as GPRS, broadcast, etc., and enrich the functions of the communication terminal on the basis of reducing the SAR. Further, the shunt antenna 30 is located in the electromagnetic wave absorption ratio SAR hot spot area of the main communication antenna 20.
  • the relative distance between the shunt antenna 30 and the main communication antenna 20 is preferably less than 30 mm. Further, the shunt antenna 30 and the main communication antenna 20 resonate in the electromagnetic wave absorption ratio SAR hot spot region of the main communication antenna 20. When the main antenna SAR value is high, the main communication antenna 20 and the shunt antenna 30 resonate, which improves the coupling efficiency of the main communication antenna 20 and the shunt antenna 30, and further reduces the SAR value.
  • An embodiment of the present invention further provides an antenna layout method, including: A shunt antenna that is reversely coupled to the main communication antenna is disposed at one end of the circuit board where the main communication antenna is disposed; the shunt antenna is disposed opposite to the main communication antenna and the current direction is opposite. Since the current direction of the main communication antenna and the shunt antenna is opposite, and the field strength near the antenna is related to the current on the antenna, the field strengths near the main communication antenna and the shunt antenna can cancel each other, and the vicinity of the main communication antenna and the shunt antenna is reduced. Field strength.
  • the preferred scheme has the same current as the main communication antenna and the shunt antenna, and the coupling effect is the best.
  • the main communication antenna and the shunt antenna can be disposed at the same end of the circuit board, and the main communication antenna is parallel to the end of the shunt antenna, so that the main communication antenna and the shunt antenna have opposite current directions.
  • the conductivity of the body, ⁇ is the density of the object being excited. It shows that the SAR of the antenna is proportional to the field strength in the vicinity. When the field strength decreases, the SAR value decreases. Because the shunt antenna opposite to the direction of the main communication antenna is added, the field strength near the main communication antenna is reduced. , further reducing the SAR value.
  • the terminal for reducing the electromagnetic wave absorption ratio proposed in the embodiment provides a field-strength and SAR by reducing the magnetic field around the main communication antenna and reducing the field strength of the main communication antenna by providing a shunt antenna that is reversely coupled in the vicinity of the main communication antenna. The value is proportional.
  • the SAR value decreases, that is, by increasing the shunt antenna that is inversely coupled to the main communication antenna, the SAR value is reduced.
  • the shunt antenna is used as a functional antenna for communication, and the shunt antenna can be used as a functional antenna for communication, and an additional function of the communication terminal, such as GPRS, broadcast, etc., is realized, and the function of the communication terminal is enriched on the basis of reducing the SAR.
  • the main shunt antenna is located in the electromagnetic wave absorption ratio SAR hot spot area of the main communication antenna. Since the SAR value of the main communication antenna has a hot spot area, the SAR value in the area is large and the SAR value is better.
  • the relative distance between the shunt antenna and the main communication antenna is preferably less than 30 mm. Further, the shunt antenna and the main communication antenna resonate in an electromagnetic wave absorption ratio SAR hot spot region of the main communication antenna. When the SAR value of the main antenna is high, the main communication antenna and the shunt antenna resonate, which improves the coupling efficiency between the main communication antenna and the shunt antenna, and further reduces the SAR value.
  • the technical solution provided by the embodiments of the present invention can be applied to the field of wireless communications to reduce the SAR value.
  • it is applied to a wireless terminal, and the shunt antenna coupled with the reverse coupling is disposed in the vicinity of the main communication antenna, thereby weakening
  • the magnetic field around the main communication antenna reduces the field strength of the main communication antenna, so that the field strength is proportional to the SAR value.
  • the SAR value decreases, SP, by adding a shunt antenna that is inversely coupled to the main communication antenna. Reduce the SAR value.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Support Of Aerials (AREA)
  • Details Of Aerials (AREA)

Abstract

La présente invention concerne un procédé de disposition de terminal et d'antenne permettant de réduire un taux d'absorption spécifique. En disposant une antenne de délestage à proximité d'une antenne de communications principale et couplée à l'antenne de communications principale dans une direction opposée, un champ magnétique entourant l'antenne de communications principale est altéré et l'intensité de champ de l'antenne de communications principale est réduite, de sorte que l'intensité de champ est directement proportionnelle à une valeur SAR; lorsque l'intensité de champ est réduite, la valeur SAR est réduite, c'est-à-dire que la valeur SAR est réduite par l'ajout d'une antenne de délestage couplée à l'antenne de communications principale dans une direction opposée.
PCT/CN2013/081171 2013-05-17 2013-08-09 Procédé de disposition de terminal et d'antenne permettant de réduire un taux d'absorption spécifique WO2014183342A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201310183150.6A CN104167590B (zh) 2013-05-17 2013-05-17 降低电磁波吸收比值的终端和天线布局方法
CN201310183150.6 2013-05-17

Publications (1)

Publication Number Publication Date
WO2014183342A1 true WO2014183342A1 (fr) 2014-11-20

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Application Number Title Priority Date Filing Date
PCT/CN2013/081171 WO2014183342A1 (fr) 2013-05-17 2013-08-09 Procédé de disposition de terminal et d'antenne permettant de réduire un taux d'absorption spécifique

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CN (1) CN104167590B (fr)
WO (1) WO2014183342A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105552532B (zh) * 2016-01-27 2018-12-04 北京海杭通讯科技有限公司 一种低电磁吸收比的天线
CN112350047B (zh) * 2019-08-06 2022-07-12 华为技术有限公司 一种可穿戴设备
CN112968285A (zh) * 2021-02-02 2021-06-15 维沃移动通信有限公司 电子设备
CN116613509A (zh) * 2022-02-09 2023-08-18 Oppo广东移动通信有限公司 天线装置及电子设备

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012122116A1 (fr) * 2011-03-04 2012-09-13 Qualcomm Incorporated Systèmes et procédés permettant une réduction dynamique de la limite de la puissance d'émission à des fins de conformité au taux d'absorption spécifique
CN102810126A (zh) * 2012-07-18 2012-12-05 上海交通大学 一种用于降低mimo-ue sar的方法及其仿真系统
CN103001005A (zh) * 2012-10-25 2013-03-27 中兴通讯股份有限公司 降低电磁辐射比吸收率的装置及移动终端
CN103067038A (zh) * 2013-01-05 2013-04-24 中兴通讯股份有限公司 一种移动终端及降低比吸收率的方法

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102738584B (zh) * 2012-06-15 2016-03-02 中兴通讯股份有限公司 一种降低数据卡sar值的终端天线及其成型方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012122116A1 (fr) * 2011-03-04 2012-09-13 Qualcomm Incorporated Systèmes et procédés permettant une réduction dynamique de la limite de la puissance d'émission à des fins de conformité au taux d'absorption spécifique
CN102810126A (zh) * 2012-07-18 2012-12-05 上海交通大学 一种用于降低mimo-ue sar的方法及其仿真系统
CN103001005A (zh) * 2012-10-25 2013-03-27 中兴通讯股份有限公司 降低电磁辐射比吸收率的装置及移动终端
CN103067038A (zh) * 2013-01-05 2013-04-24 中兴通讯股份有限公司 一种移动终端及降低比吸收率的方法

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CN104167590A (zh) 2014-11-26
CN104167590B (zh) 2019-07-12

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