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WO2016061997A1 - Structure d'antenne - Google Patents

Structure d'antenne Download PDF

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Publication number
WO2016061997A1
WO2016061997A1 PCT/CN2015/074777 CN2015074777W WO2016061997A1 WO 2016061997 A1 WO2016061997 A1 WO 2016061997A1 CN 2015074777 W CN2015074777 W CN 2015074777W WO 2016061997 A1 WO2016061997 A1 WO 2016061997A1
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WO
WIPO (PCT)
Prior art keywords
arm
antenna
dual
frequency
branch portion
Prior art date
Application number
PCT/CN2015/074777
Other languages
English (en)
Chinese (zh)
Inventor
谢一泓
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 WO2016061997A1 publication Critical patent/WO2016061997A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith

Definitions

  • This paper relates to the field of communications, and in particular to an antenna structure.
  • SAR is the specific absorption rate. Under the action of an external electromagnetic field, an induced electromagnetic field will be generated in the human body. Since every organ in the human body is a lossy medium, the electromagnetic field in the body will generate electric current, resulting in absorption and dissipation of electromagnetic energy. SAR is commonly used in biodoping to characterize this physical process. SAR is defined as the electromagnetic power absorbed or consumed by human tissue per unit mass in W/kg.
  • wireless terminals mobile phones, data cards, MiFi/Hotspot
  • wireless terminals mobile phones, data cards, MiFi/Hotspot
  • the public is increasingly concerned about the impact of electromagnetic radiation from wireless terminal products on human health. Therefore, many markets currently require SAR for mobile terminal products, and many products must meet FCC/CE SAR requirements. This puts higher requirements on the design of the mobile terminal antenna.
  • the current SAR technology reduces the cable power and absorbing materials. These aspects are either sacrificing the total radiated power TRP of the antenna, affecting the communication signal, or increasing the cost and process complexity.
  • the antenna design really solves the problem of SAR.
  • the antenna design can basically be unipolar multi-arm, monopole plus parasitic IFA plus parasitic and other forms, and the high frequency (1700-2700MHz) that comes out of these kinds of routing forms, although the performance of the active test OTA is generally good, the SAR value is generally high, and even the SAR value exceeds the standard, becoming a mobile terminal.
  • the main board 1 is connected to the single-pole dual-arm antenna through a feeding point and an impedance matching network to feed the single-pole dual-arm antenna.
  • the common single-pole dual-arm antenna is composed of two arms, that is, a low-frequency long arm 51 and a high-frequency short arm 52; wherein the low-frequency long arm 51 is mainly configured to achieve low-frequency resonance.
  • the low-frequency long arm 51 is mainly configured to achieve low-frequency resonance.
  • the length of the two arms and the impedance matching network can be adjusted so that the double resonance of the low frequency long arm 51 and the resonance generated by the high frequency short arm 52 are interleaved to widen the bandwidth of the antenna.
  • the main disadvantage of such a conventional single pole dual arm antenna is that the SAR value of the high frequency band realized by the high frequency short arm 52 is generally high.
  • Embodiments of the present invention provide an antenna structure to solve the technical problem of how to effectively reduce the specific absorption rate SAR of a dual-arm antenna.
  • an antenna structure including:
  • a main board connected to the dual-arm antenna and feeding the dual-arm antenna;
  • the dual-arm antenna includes: a first arm configured to achieve low-frequency resonance, a second arm configured to achieve high-frequency resonance, and a coupling branch;
  • the first end of the first arm and the first end of the second arm are respectively connected to the main board;
  • the coupling branch is parallel to the second arm, and the coupling branch includes: a first branch portion and a second branch portion, wherein the first branch portion is disposed side by side with the first portion of the second arm, the first a first portion of the second arm is formed as a portion of the second end of the second arm extending toward the first end; the second branch portion is away from the first end of the second arm relative to the first branch portion The direction of the extension is; the second branch portion is connected to the first arm.
  • the length of the first branch portion is less than 10 mm.
  • a distance of an end of the second branch portion away from the first branch portion and a second end of the first arm is between 10 mm and 15 mm.
  • the first end of the first arm is connected to the main board through a feeding point and impedance matching.
  • the first end of the second arm is coupled to the first end of the first arm.
  • the first end of the second arm is connected to the main board through a grounding point.
  • the distance between the grounding point and the feeding point is less than a preset value, and the preset value is 5 mm.
  • the first end of the first arm is further connected to the main board through the grounding point.
  • the first end of the second arm is coupled to the first end of the first arm.
  • the first end of the second arm is connected to the main board through the grounding point.
  • the antenna structure includes a main board and a dual-arm antenna, and the main board feeds the two-arm antenna through a feeding point and impedance matching; the first arm of the dual-arm antenna is connected to the main board through impedance matching and a feeding point, The two arms are led out from the beginning of the first arm or are led out by the grounding point; in addition, the coupling branch is also led out from the end of the first arm, and the coupling branch is coupled with the second arm end in parallel, and the second current is changed by coupling.
  • the distribution and dispersion of the electric field improve the high-band SAR value achieved by the second arm in the ordinary single-pole dual-arm antenna, and reduce the SAR value of the antenna.
  • FIG. 1 is a schematic structural view of a related conventional single-pole dual-arm antenna
  • Figure 2 is a detailed structural view of the conventional single-pole dual-arm antenna of Figure 1;
  • FIG. 3 is a schematic structural view of an antenna according to an embodiment of the present invention.
  • FIG. 4 is a detailed structural diagram of an antenna of the embodiment of the present invention in FIG. 3;
  • FIG. 5 is a detailed structural diagram of still another antenna in the embodiment of the present invention.
  • FIG. 6 is a detailed structural diagram of an IFA dual-arm antenna in an embodiment of the present invention.
  • Fig. 7 is a view showing the detailed structure of still another IFA dual-arm antenna in the embodiment of the present invention.
  • the embodiment of the present invention provides an antenna structure for the problem that the current terminal SAR value is relatively high.
  • an embodiment of the present invention provides an antenna structure, which can reduce a high frequency SAR value of a terminal, where the antenna includes:
  • a main board 1 connected to the dual-arm antenna 5 and feeding the dual-arm antenna 5;
  • the dual-arm antenna 5 includes: a first arm configured to achieve low-frequency resonance, a second arm configured to achieve high-frequency resonance, and a coupling branch 53, a first arm configured to achieve low-frequency resonance in this embodiment
  • the second arm provided to realize high frequency resonance corresponds to the high frequency short arm 52 shown in FIG.
  • the first end of the low frequency long arm 51 and the first end of the high frequency short arm 52 are respectively connected to the main board;
  • the coupling branch 53 is parallel to the high frequency short arm 52 and includes: a first branch portion 531 and a second branch portion 532, wherein the first branch portion 531 and the first portion 521 of the high frequency short arm Positioned side by side, the first portion 521 of the high frequency short arm forms a portion of the second end of the high frequency short arm 52 extending toward the first end; the second branch portion 532 is opposite to the first branch portion 531 Extending from a direction away from the first end of the high frequency short arm 52; the second branch portion 532 is coupled to the low frequency long arm 51.
  • the length of the first branch portion 531 is less than 10 mm; the distance between the end of the second branch portion 532 away from the first branch portion 531 and the second end of the low frequency long arm 51 is located at 10 mm to Between 15mm.
  • the first end of the low frequency long arm 51 is connected to the main board 1 through a feeding point 2 and an impedance matching 3, and the first end of the high frequency short arm 52 is opposite to the first end of the low frequency long arm 51. connection.
  • the first end of the high frequency short arm 52 can also be directly connected to the main board 1 through the grounding point 4.
  • the distance between the grounding point 4 and the feeding point 2 is less than a preset value, and the preset value is 5 mm.
  • the dual-arm antenna is an inverted-F dual-arm antenna
  • the first end of the low-frequency long arm 51 is further connected to the main board 1 through the grounding point 4
  • the high-frequency short arm A first end of the 52 is coupled to the first end of the low frequency long arm 51.
  • the first end of the high frequency short arm 52 can also be connected to the main board 1 through a grounding point 4.
  • the main board feeds the two-arm antenna through the feeding point and the impedance matching;
  • the line consists of a low-frequency long arm, a high-frequency short arm and a coupling branch; the low-frequency long arm is connected to the main board through impedance matching and a feeding point; the high-frequency long arm is led out from the beginning of the low-frequency short arm or is led out by the grounding point;
  • the distance between the grounding points is generally less than 5 mm;
  • the coupling branches are drawn from the end of the low-frequency long arm 10-15 mm, and the ends of the high-frequency short arms are staggered in parallel, and the staggering distance is less than 10 mm.
  • the coupling branch is coupled with the end of the high-frequency short arm in parallel, and the current distribution on the high-frequency short arm is changed by coupling to disperse the electric field, thereby improving the high-band SAR value of the ordinary single-pole dual-arm antenna realized by the high-frequency short arm. In the higher case, the SAR value of the antenna is lowered.
  • the antenna in the embodiment of the present invention also includes a main body including a main board 1, a feeding point 2, a grounding point 3, an impedance matching 4, and a monopole dual-arm antenna 5.
  • the single-pole dual-arm antenna of the present embodiment includes a coupling branch 53 in addition to the low-frequency long arm 51 and the high-frequency short arm 52.
  • the working principle of the dual-arm antenna is similar to that of the ordinary monopole antenna.
  • the low-band resonance is realized by the local oscillator resonance of the low-frequency long arm 51, and the high-band resonance is performed by the double frequency of the low-frequency long arm 51 and the high-frequency short arm 52. achieve.
  • the coupling branch 53 is introduced into the antenna design in this embodiment, that is, it is taken out from the end of the low frequency long arm 51 by 10-15 mm.
  • a short trace runs in the direction of the high frequency short arm 52 and is parallel to the end of the high frequency short arm 52 and has a side-by-side arrangement with a staggered distance of less than 10 mm. Since the coupling branch 53 drawn from the low-frequency long arm 51 is short, the influence on the low-frequency resonance is small, and the low-frequency resonance performance remains substantially unchanged; and the coupling branch 53 and the high-frequency short arm 52 are equally staggered, and the original height is changed by the coupling action. The current distribution on the short arm 52 changes the surrounding electromagnetic field and disperses it, thereby achieving the purpose of reducing the high frequency SAR value.
  • FIG. 5 another implementation form of reducing the SAR monopole dual-arm antenna in this embodiment is shown.
  • the high-frequency short arm 52 is directly connected to the grounding point 4 as a parasitic branch, instead of being drawn from the beginning of the low-frequency long arm 51, which is fed by the coupling with the low-frequency long arm 51, which can be realized. High frequency band resonance.
  • the SAR value of the high frequency resonance generated by the high frequency short arm 52 can also be lowered.
  • another implementation form of reducing the SAR dual-arm antenna is realized by the form of an IFA antenna + a parasitic branch.
  • the main board 1 is connected to the low frequency long arm 51 of the dual arm antenna 5 through the feeding point 2 and the impedance matching 3, and the low frequency long arm 51 also passes through the grounding point 4 Connected to the main board 1 to achieve low-frequency resonance with an IFA antenna and high-frequency partial resonance with its double frequency.
  • the high-frequency short arm 52 is led out from the beginning of the low-frequency long arm 51 to realize high-frequency resonance; by adjusting its length and impedance matching, the resonance generated by it is interleaved with the resonance generated by the double-frequency of the low-frequency long arm 51, and the high-frequency bandwidth can be broadened.
  • the coupling branch 53 is taken out from the end of the low-frequency long arm 51 by 10-15 mm, is routed along the direction of the high-frequency short arm, and is parallel with the end of the high-frequency short arm and has a side-by-side arrangement, and the staggered distance is less than 10 mm.
  • the coupling of the high-frequency short arm changes the current on the high-frequency short arm to disperse the nearby electromagnetic field distribution and reduce the high-frequency SAR value.
  • FIG. 7 another implementation form of reducing the SAR dual-arm antenna in this embodiment.
  • the low frequency long arm 51 of the dual arm antenna is implemented by the IFA antenna like the antenna of FIG.
  • the difference is that the high frequency short arm 52 is led out by the grounding point 4 instead of the beginning of the low frequency long arm 51.
  • the high frequency short arm 52 in this implementation is fed by its coupling with the low frequency long arm 51 to achieve high frequency resonance.
  • the high frequency SAR value is reduced by the coupling between the high frequency short arm 52 and the coupling branch 53.
  • Table 1 shows the performance of the ordinary single-pole dual-arm antenna
  • Table 2 shows the performance table of the SAR single-pole dual-arm antenna.
  • WCDMA850, WCDMA1700 and WCDMA1900 represent three frequency bands
  • SAR represents the SAR value of the antenna corresponding to a certain channel of a certain frequency band.
  • the SAR data in the table is tested under the Speag Dasy5SAR test system.
  • the WCDMA1700 with the parasitic high-frequency short arm is reduced in the total radiated power (TRP).
  • TRP total radiated power
  • the SAR of the three channels (8762, 8846, 8912) has decreased.
  • the smallest SAR is the intermediate channel 8846.
  • the TRP is basically the same (normal single-pole dual-arm antenna 19.4, SAR unipolar)
  • the two-arm antenna 19.7), the maximum surface SAR values are: ordinary single-pole dual-arm antenna 1.86, SAR single-pole dual-arm antenna 1.07.
  • the SAR value of the low-frequency and high-frequency bands realized by the low-frequency long arm is basically the same, and the high-frequency SAR realized by the parasitic high-frequency short arm is adopted. Can be reduced by about 0.8W/Kg.
  • the present embodiment extracts the coupling branch on the low-frequency long arm of the dual-arm antenna and traces it along the direction of the high-frequency short arm so as to be parallelized with the end of the high-frequency short arm to generate a coupling effect, thereby changing the high-frequency short arm.
  • the current distribution on the distributed electromagnetic field distribution reduces the high frequency SAR value.
  • the relative position between the dual-arm antenna and the main board can be arbitrary, depending on the product designed
  • the reserved antenna clearance depends on.
  • the height of the antenna design space is guaranteed, and it can be realized by a bracket antenna or an LDS antenna (formed directly by laser).
  • the dual-arm antenna can be located in the upper area or the lower area of the main board; for ultra-thin products, the antenna
  • the design space is highly limited, and the single-pole dual-arm antenna can be directly etched on the main board, using a PCB antenna (the part of the printed circuit board for wireless reception and transmission).
  • the antenna structure of the above embodiment of the invention extracts the coupling branch from the low-frequency long arm of the dual-arm antenna. Since the coupling branch is led out from the end of the low-frequency long arm and has a short length, it has little effect on the low-frequency performance of the antenna; the coupling branch and the high The ends of the short-frequency arm are parallel-staggered for coupling, and the current distribution on the high-frequency short arm is changed by coupling to disperse the electric field, thereby improving the high-band SAR value achieved by the high-frequency short arm in the ordinary single-pole dual-arm antenna. Reduce the SAR value of the antenna and reduce the damage to the human body.
  • the above technical solution improves the high-band SAR value achieved by the second arm in the ordinary single-pole dual-arm antenna, and reduces the SAR value of the antenna.

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  • Details Of Aerials (AREA)

Abstract

L'invention concerne une structure d'antenne qui comprend une antenne bibras et une carte mère. La carte mère est connectée à l'antenne bibras et sert à alimenter en puissance l'antenne bibras. L'antenne bibras comprend un premier bras servant à la résonance à basse fréquence, un second bras servant à la résonance à haute fréquence, et une branche d'accouplement. Une première extrémité du premier bras et une première extrémité du second bras sont connectées respectivement à la carte mère. La branche d'accouplement est parallèle au second bras et comprend une première partie de branche et une seconde partie de branche. La première partie de branche et une première partie du second bras sont agencées côte à côte. La première partie du second bras forme une partie d'une seconde extrémité du second bras s'étendant vers la première extrémité. La seconde partie de branche s'éloigne de la première extrémité du second bras par rapport à la première partie de branche. La seconde partie de branche est connectée au premier bras. La structure d'antenne permet de réduire le taux d'absorption spécifique (SAR) de l'antenne et les blessures par rayonnement sur le corps humain.
PCT/CN2015/074777 2014-10-21 2015-03-20 Structure d'antenne WO2016061997A1 (fr)

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CN201420610391.4U CN204243174U (zh) 2014-10-21 2014-10-21 一种天线结构
CN201420610391.4 2014-10-21

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WO2016061997A1 true WO2016061997A1 (fr) 2016-04-28

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107681272A (zh) * 2017-11-06 2018-02-09 深圳市信维通信股份有限公司 一种极小净空下的双耦合天线
CN109509962A (zh) * 2018-11-19 2019-03-22 惠州硕贝德无线科技股份有限公司 一种用于5g手机终端的双频mimo天线结构
CN112257247A (zh) * 2020-10-16 2021-01-22 昆山睿翔讯通通信技术有限公司 一种天线组件及其设计方法

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105529525A (zh) * 2014-10-21 2016-04-27 中兴通讯股份有限公司 一种天线结构
CN107171057A (zh) * 2016-03-04 2017-09-15 神讯电脑(昆山)有限公司 多频段天线
US10665925B2 (en) * 2016-05-06 2020-05-26 Futurewei Technologies, Inc. Antenna apparatus and method with dielectric for providing continuous insulation between antenna portions
CN112332084A (zh) * 2020-10-19 2021-02-05 深圳市中诺通讯有限公司 一种提升手机gps天线上半球效率的天线结构
CN113540790B (zh) * 2021-04-26 2023-12-29 深圳市宏电技术股份有限公司 Mimo天线及电子设备

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1034150A (ja) 1996-07-24 1998-02-10 Brother Ind Ltd イオン水生成装置
JP3986820B2 (ja) 2001-12-25 2007-10-03 森永乳業株式会社 電解殺菌水製造装置
US20080055160A1 (en) * 2006-08-29 2008-03-06 Samsung Electronics Co., Ltd. Dual-band inverted F antenna reducing SAR
US20090046023A1 (en) * 2007-08-17 2009-02-19 High Tech Computer, Corp. Mobile communications device with a compact-sized three-dimensional antenna
CN202333125U (zh) * 2011-11-08 2012-07-11 上海安费诺永亿通讯电子有限公司 一种可以有效降低移动终端的sar值的内置天线结构
CN102780072A (zh) * 2011-05-13 2012-11-14 宏碁股份有限公司 可降低电磁波特定吸收比率的天线组合
WO2013069764A1 (fr) 2011-11-10 2013-05-16 NISHIZAWA Hirohisa Procédé pour l'ingestion d'une composition de créatine, composition de créatine pour l'utilisation dans ledit procédé d'ingestion, et agent médicinal contenant de la créatine et aliment contenant de la créatine, chacun étant obtenu à l'aide de ladite composition de créatine
WO2014066540A1 (fr) * 2012-10-24 2014-05-01 Microsoft Corporation Réduction de sar dans les dispositifs d'émission radio
US20140197997A1 (en) * 2013-01-14 2014-07-17 Auden Techno.Corp. Antenna structure
WO2014199950A1 (fr) 2013-06-10 2014-12-18 森永乳業株式会社 Dispositif de réglage de puissance et procédé de commande pour celui-ci

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1034150A (ja) 1996-07-24 1998-02-10 Brother Ind Ltd イオン水生成装置
JP3986820B2 (ja) 2001-12-25 2007-10-03 森永乳業株式会社 電解殺菌水製造装置
US20080055160A1 (en) * 2006-08-29 2008-03-06 Samsung Electronics Co., Ltd. Dual-band inverted F antenna reducing SAR
US20090046023A1 (en) * 2007-08-17 2009-02-19 High Tech Computer, Corp. Mobile communications device with a compact-sized three-dimensional antenna
CN102780072A (zh) * 2011-05-13 2012-11-14 宏碁股份有限公司 可降低电磁波特定吸收比率的天线组合
CN202333125U (zh) * 2011-11-08 2012-07-11 上海安费诺永亿通讯电子有限公司 一种可以有效降低移动终端的sar值的内置天线结构
WO2013069764A1 (fr) 2011-11-10 2013-05-16 NISHIZAWA Hirohisa Procédé pour l'ingestion d'une composition de créatine, composition de créatine pour l'utilisation dans ledit procédé d'ingestion, et agent médicinal contenant de la créatine et aliment contenant de la créatine, chacun étant obtenu à l'aide de ladite composition de créatine
WO2014066540A1 (fr) * 2012-10-24 2014-05-01 Microsoft Corporation Réduction de sar dans les dispositifs d'émission radio
US20140197997A1 (en) * 2013-01-14 2014-07-17 Auden Techno.Corp. Antenna structure
WO2014199950A1 (fr) 2013-06-10 2014-12-18 森永乳業株式会社 Dispositif de réglage de puissance et procédé de commande pour celui-ci

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107681272A (zh) * 2017-11-06 2018-02-09 深圳市信维通信股份有限公司 一种极小净空下的双耦合天线
CN107681272B (zh) * 2017-11-06 2023-10-17 深圳市信维通信股份有限公司 一种极小净空下的双耦合天线
CN109509962A (zh) * 2018-11-19 2019-03-22 惠州硕贝德无线科技股份有限公司 一种用于5g手机终端的双频mimo天线结构
CN109509962B (zh) * 2018-11-19 2023-10-20 惠州硕贝德无线科技股份有限公司 一种用于5g手机终端的双频mimo天线结构
CN112257247A (zh) * 2020-10-16 2021-01-22 昆山睿翔讯通通信技术有限公司 一种天线组件及其设计方法
CN112257247B (zh) * 2020-10-16 2024-01-09 昆山睿翔讯通通信技术有限公司 一种天线组件及其设计方法

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