TWI502816B - Multi-band antenna - Google Patents

Multi-band antenna Download PDF

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Publication number
TWI502816B
TWI502816B TW098145198A TW98145198A TWI502816B TW I502816 B TWI502816 B TW I502816B TW 098145198 A TW098145198 A TW 098145198A TW 98145198 A TW98145198 A TW 98145198A TW I502816 B TWI502816 B TW I502816B
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Taiwan
Prior art keywords
band antenna
radiating portion
antenna
plane
planar substrate
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TW098145198A
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Chinese (zh)
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TW201123617A (en
Inventor
Chih Yuan Yang
ming liang Yang
Wen Chin Ou
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Hon Hai Prec Ind Co Ltd
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Priority to TW098145198A priority Critical patent/TWI502816B/en
Publication of TW201123617A publication Critical patent/TW201123617A/en
Application granted granted Critical
Publication of TWI502816B publication Critical patent/TWI502816B/en

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Description

多頻段天線 Multi-band antenna

本發明涉及一種多頻段天線,尤其涉及一種具有平面結構的多頻段天線。 The present invention relates to a multi-band antenna, and more particularly to a multi-band antenna having a planar structure.

隨著無線通訊系統的迅速發展,具有通訊接收功能的電子裝置趨向使用多個系統,例如,WiFi,GSM,藍牙及未來的WiMax等,每一系統的工作頻率不盡相同,這使得電子裝置的天線系統相容十分困難。 With the rapid development of wireless communication systems, electronic devices with communication receiving functions tend to use multiple systems, such as WiFi, GSM, Bluetooth, and future WiMax, etc., each system operating frequency is not the same, which makes the electronic device Antenna system compatibility is very difficult.

現有技術中可通過一個合適的間隙選擇工作頻帶,從而使平面天線具有兩諧振頻率,但是,這種天線結構使得天線的原有特性易受其他頻帶影響,不利於開發多頻帶天線。 In the prior art, the working frequency band can be selected by a suitable gap, so that the planar antenna has two resonant frequencies. However, the antenna structure makes the original characteristics of the antenna susceptible to other frequency bands, which is disadvantageous for developing a multi-band antenna.

有鑒於此,有必要提供一種高相容性的多頻帶天線。 In view of this, it is necessary to provide a highly compatible multi-band antenna.

本發明所提供了一種多頻段天線,包括一天線本體、一平面基板、一接地部及一饋入點,所述多頻段天線具有一下平面,一後平面,一上平面和一外平面的立體結構、所述天線本體分別位於所述多頻段天線的四個平面上,所述平面基板及所述接地部位於所述多頻段天線的下表面,所述平面基板位於所述接地部及所述位於多頻段天線的下表面天線本體的間隙,所述天線本體與所述平面基板及所述接地部在所述饋入點處連接,所述天線本體包括一 位於所述多頻段天線下平面的第一輻射部。 The present invention provides a multi-band antenna comprising an antenna body, a planar substrate, a grounding portion and a feeding point, wherein the multi-band antenna has a lower plane, a rear plane, an upper plane and an outer plane. The antenna body is located on four planes of the multi-band antenna, the planar substrate and the grounding portion are located on a lower surface of the multi-band antenna, the planar substrate is located at the grounding portion, and the a gap between the antenna body of the lower surface of the multi-band antenna, the antenna body is connected to the planar substrate and the grounding portion at the feeding point, and the antenna body includes a a first radiating portion located in a lower plane of the multi-band antenna.

1‧‧‧多頻段天線 1‧‧‧Multi-band antenna

11‧‧‧天線本體 11‧‧‧Antenna body

12‧‧‧平面基板 12‧‧‧ planar substrate

13‧‧‧接地部 13‧‧‧ Grounding Department

111‧‧‧第一輻射部 111‧‧‧First Radiation Department

112‧‧‧第二輻射部 112‧‧‧Second Radiation Department

113‧‧‧第三輻射部 113‧‧‧ Third Radiation Department

114‧‧‧第四輻射部 114‧‧‧Fourth Radiation Department

115‧‧‧饋線 115‧‧‧ feeder

1111‧‧‧第一臂 1111‧‧‧First arm

1112‧‧‧第二臂 1112‧‧‧second arm

1121‧‧‧第一L型結構 1121‧‧‧First L-shaped structure

1122‧‧‧第二L型結構 1122‧‧‧Second L-shaped structure

A‧‧‧饋入點 A‧‧‧Feeding point

圖1為本發明的多頻段天線在優選實施方式下的立體圖。 1 is a perspective view of a multi-band antenna of the present invention in a preferred embodiment.

圖2為本發明的多頻段天線在優選實施方式下的天線本體的平面拉伸圖。 2 is a plan view of the antenna body of the multi-band antenna of the present invention in a preferred embodiment.

圖3為本發明的多頻段天線在優選實施方式下的回波損耗(return loss)特性曲線圖。 3 is a graph showing the return loss characteristics of the multi-band antenna of the present invention in a preferred embodiment.

請參考圖1,為本發明的多頻段天線在優選實施方式下的立體圖。所述多頻段天線1具有立體結構,為便於理解,根據圖1中的方位分別定義為下平面,後平面,上平面和外平面四個平面。多頻段天線1包括一天線本體11,一平面基板12及一接地部13。所述多頻段天線1的下表面由平面基板12、接地部13及天線本體11的一部分構成。接地部13呈長方形。平面基板12包括呈長方形兩部分,第一部分位於接地部13及天線本體11的下表面部分的中間,第二部分位於天線本體11的下表面部分中(具體形狀可參見圖2)。平面基板12由絕緣材料製成。接地部13為導體。多頻段天線1的後平面,上平面和外平面三個平面均由天線本體11構成。天線本體11包括處於下平面的第一輻射部111、處於後平面的第二輻射部112、處於上平面的第三輻射部113、處於正面平面的第四輻射部114、饋線115及饋入點A。 Please refer to FIG. 1, which is a perspective view of a multi-band antenna of the present invention in a preferred embodiment. The multi-band antenna 1 has a three-dimensional structure. For ease of understanding, the orientations in FIG. 1 are respectively defined as four planes: a lower plane, a rear plane, an upper plane, and an outer plane. The multi-band antenna 1 includes an antenna body 11, a planar substrate 12, and a ground portion 13. The lower surface of the multi-band antenna 1 is composed of a planar substrate 12, a ground portion 13, and a part of the antenna body 11. The ground portion 13 has a rectangular shape. The planar substrate 12 includes two portions in a rectangular shape, the first portion being located in the middle of the ground portion 13 and the lower surface portion of the antenna body 11, and the second portion being located in the lower surface portion of the antenna body 11 (see FIG. 2 for a specific shape). The planar substrate 12 is made of an insulating material. The ground portion 13 is a conductor. The rear plane, the upper plane and the outer plane of the multi-band antenna 1 are each constituted by the antenna body 11. The antenna body 11 includes a first radiating portion 111 in a lower plane, a second radiating portion 112 in a rear plane, a third radiating portion 113 in an upper plane, a fourth radiating portion 114 in a front plane, a feed line 115, and a feeding point. A.

第三輻射部113呈長方形。第四輻射部114由多條折線構成一近似三角形狀,該近似三角形的底邊與第三輻射部113相連。該近似三角形的頂點與平面基板12及接地部13共同連接於饋入點A。饋 線115的一端位於該近似三角形的非底邊上,連接第四輻射部114與接地部13及平面基板12連接線,並垂直於多頻段天線1的下平面。 The third radiating portion 113 has a rectangular shape. The fourth radiating portion 114 is formed of an approximate triangular shape by a plurality of polygonal lines, and the bottom edge of the approximately triangular portion is connected to the third radiating portion 113. The apex of the approximate triangle is connected to the feeding point A in common with the planar substrate 12 and the ground portion 13. Feed One end of the line 115 is located on the non-base side of the approximately triangular shape, and connects the fourth radiating portion 114 to the grounding portion 13 and the planar substrate 12 and is perpendicular to the lower plane of the multi-band antenna 1.

第一輻射部111及第二輻射部112的具體結構將結合圖2進行說明。圖1及圖2中所示意的天線本體11,平面基板12及接地部13的結構及尺寸僅為本發明一優選實施例,並不局限於圖中顯示,可在實際應用中根據具體的應用環境在本發明基礎上進行改進。 The specific structure of the first radiating portion 111 and the second radiating portion 112 will be described with reference to FIG. The structure and size of the antenna body 11, the planar substrate 12 and the grounding portion 13 illustrated in FIG. 1 and FIG. 2 are only a preferred embodiment of the present invention, and are not limited to those shown in the drawings, and may be applied in practical applications according to specific applications. The environment is improved on the basis of the present invention.

圖2為本發明的多頻段天線在優選實施方式下的天線本體的平面拉伸圖。第一輻射部111呈平面L型,包括第一臂1111及與第一臂垂直的第二臂1112。第一臂1111與第二臂1112間的狹長縫隙為平面基板12。 2 is a plan view of the antenna body of the multi-band antenna of the present invention in a preferred embodiment. The first radiating portion 111 has a planar L shape and includes a first arm 1111 and a second arm 1112 perpendicular to the first arm. The slit between the first arm 1111 and the second arm 1112 is a planar substrate 12.

第二輻射部112包括兩個與第一輻射部111相同的L型結構1121及1122,第一L型結構1121與第一輻射部111在如圖2中所示的上下方位反向放置,並連接於第一輻射部111的第二臂1112。第二L型結構1122與第一輻射部111在如圖2中所示的方位相同,並與第一L型結構1121連接。 The second radiating portion 112 includes two L-shaped structures 1121 and 1122 which are identical to the first radiating portion 111, and the first L-shaped structure 1121 is placed opposite to the first radiating portion 111 in the up and down direction as shown in FIG. The second arm 1112 is connected to the first radiating portion 111. The second L-shaped structure 1122 is identical in orientation to the first radiating portion 111 as shown in FIG. 2, and is connected to the first L-shaped structure 1121.

在本實施例中,參圖2所示,第一臂1111豎直方向長度為50mm,水準方向長度為3mm,第二臂1112豎直方向長度為2mm,水準方向長度為5mm。 In the present embodiment, as shown in FIG. 2, the first arm 1111 has a length of 50 mm in the vertical direction, a length of 3 mm in the horizontal direction, a length of 2 mm in the vertical direction of the second arm 1112, and a length of 5 mm in the horizontal direction.

圖3為本發明的多頻段天線在優選實施方式下的回波損耗(return loss)特性曲線圖。從圖中可以看到當回波損耗小於-10dB時,對應的頻段有0.9GHz,1.8GHz,2.3-4GHz,及4.9-5.8GHz,因此,本發明多頻段天線實現了多頻段工作,可以同時適用於GSM 900/1800,BT,WiFi及WiMax等系統。 3 is a graph showing the return loss characteristics of the multi-band antenna of the present invention in a preferred embodiment. It can be seen from the figure that when the return loss is less than -10 dB, the corresponding frequency bands are 0.9 GHz, 1.8 GHz, 2.3-4 GHz, and 4.9-5.8 GHz. Therefore, the multi-band antenna of the present invention realizes multi-band operation, and can simultaneously Suitable for GSM 900/1800, BT, WiFi and WiMax systems.

1‧‧‧多頻段天線 1‧‧‧Multi-band antenna

11‧‧‧天線本體 11‧‧‧Antenna body

12‧‧‧平面基板 12‧‧‧ planar substrate

13‧‧‧接地部 13‧‧‧ Grounding Department

111‧‧‧第一輻射部 111‧‧‧First Radiation Department

112‧‧‧第二輻射部 112‧‧‧Second Radiation Department

113‧‧‧第三輻射部 113‧‧‧ Third Radiation Department

114‧‧‧第四輻射部 114‧‧‧Fourth Radiation Department

115‧‧‧饋線 115‧‧‧ feeder

Claims (7)

一種多頻段天線,包括一天線本體、一平面基板、一接地部及一饋入點,其改良在於:所述多頻段天線具有一下平面,一後平面,一上平面和一外平面的立體結構、所述天線本體分別位於所述多頻段天線的四個平面上,所述平面基板及所述接地部位於所述多頻段天線的下表面,所述平面基板位於所述接地部及所述位於多頻段天線的下表面天線本體的間隙,所述天線本體與所述平面基板及所述接地部在所述饋入點處連接,所述天線本體包括一位於所述多頻段天線下平面的第一輻射部。 A multi-band antenna comprising an antenna body, a planar substrate, a grounding portion and a feeding point, wherein the multi-band antenna has a three-dimensional structure of a lower plane, a rear plane, an upper plane and an outer plane The antenna body is respectively located on four planes of the multi-band antenna, the plane substrate and the grounding portion are located on a lower surface of the multi-band antenna, the planar substrate is located at the grounding portion, and the a gap between the antenna body of the lower surface of the multi-band antenna, the antenna body being connected to the planar substrate and the grounding portion at the feeding point, the antenna body including a plane located below the multi-band antenna a radiation department. 如申請專利範圍第1項所述的多頻段天線,其中,該第一輻射部呈平面L型,該第一輻射部包括一第一臂及及一與第一臂垂直的第二臂。 The multi-band antenna according to claim 1, wherein the first radiating portion has a planar L-shape, and the first radiating portion includes a first arm and a second arm perpendicular to the first arm. 如申請專利範圍第2項所述的多頻段天線,其中,所述平面基板包括呈長方形兩部分,第一部分位於接地部及第一輻射部的中間,第二部分位於第一輻射部的L型的間隙部分。 The multi-band antenna according to claim 2, wherein the planar substrate comprises two portions in a rectangular shape, the first portion is located in the middle of the ground portion and the first radiating portion, and the second portion is located in the L-shaped portion of the first radiating portion. The gap part. 如申請專利範圍第2項所述的多頻段天線,其中,所述天線本體包括一位於所述多頻段天線後平面的第二輻射部,該第二輻射部包括兩個與第一輻射部相同的L型結構,第一L型結構與第一輻射部上下方位反向放置,連接於第一輻射部的第二臂;第二L型結構與第一輻射部方位相同,並與第一L型結構連接。 The multi-band antenna according to claim 2, wherein the antenna body comprises a second radiating portion located at a rear plane of the multi-band antenna, and the second radiating portion includes two same portions as the first radiating portion. The L-shaped structure, the first L-shaped structure is placed opposite to the first radiating portion in the up-and-down direction, and is connected to the second arm of the first radiating portion; the second L-shaped structure has the same orientation as the first radiating portion, and is identical to the first L Type structure connection. 如申請專利範圍第4項所述的多頻段天線,其中,所述天線本體包括一位於所述多頻段天線上平面的呈長方形的第三輻射部。 The multi-band antenna of claim 4, wherein the antenna body comprises a rectangular third radiating portion located on a plane of the multi-band antenna. 如申請專利範圍第5項所述的多頻段天線,其中,所述天線本體包括一位於所述多頻段天線前平面的呈近似三角形狀的第四輻射部,該近似三角形的底邊與所述第三輻射部相連,該近似三角形的頂點與平面基板及接 地部共同連接於饋入點所述。 The multi-band antenna according to claim 5, wherein the antenna body comprises a fourth radiating portion in an approximately triangular shape on a front plane of the multi-band antenna, and the bottom edge of the approximate triangle is The third radiating portion is connected, and the apex of the approximate triangle is connected to the planar substrate The ground is connected in common to the feed point. 如申請專利範圍第6項所述的多頻段天線,其中,所述天線本體包括一饋線,該饋線的一端位於所述近似三角形的非底邊上,連接第四輻射部與接地部及平面基板連接線,並垂直於所述多頻段天線的下平面。 The multi-band antenna of claim 6, wherein the antenna body comprises a feed line, one end of the feed line is located on the non-base of the approximately triangular shape, and the fourth radiating portion and the ground portion and the planar substrate are connected. The line is connected and perpendicular to the lower plane of the multi-band antenna.
TW098145198A 2009-12-25 2009-12-25 Multi-band antenna TWI502816B (en)

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US8872707B2 (en) 2012-06-29 2014-10-28 Southern Taiwan University Of Technology Multi-band antenna for tablet computer
TWI625000B (en) * 2013-08-29 2018-05-21 富智康(香港)有限公司 Antenna structure and wireless communication device using same

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TW200512982A (en) * 2003-09-26 2005-04-01 Hon Hai Prec Ind Co Ltd Multi-band antenna
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US20090073052A1 (en) * 2007-09-17 2009-03-19 Hon Hai Precision Ind. Co., Ltd. Multi-band antenna
US20090135072A1 (en) * 2007-11-26 2009-05-28 Hon Hai Precision Ind.Co., Ltd. Multi-band antenna
TW200935658A (en) * 2008-02-04 2009-08-16 Hon Hai Prec Ind Co Ltd Multi-band antenna
TW200941827A (en) * 2008-03-17 2009-10-01 Hon Hai Prec Ind Co Ltd Multi-band antenna

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW200512982A (en) * 2003-09-26 2005-04-01 Hon Hai Prec Ind Co Ltd Multi-band antenna
CN2706885Y (en) * 2004-05-13 2005-06-29 富士康(昆山)电脑接插件有限公司 Multi-frequency aerial
US20090073052A1 (en) * 2007-09-17 2009-03-19 Hon Hai Precision Ind. Co., Ltd. Multi-band antenna
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