201034292 六、發明說明： 【發明所屬之技術領域】 種適用於無線網卡的多頻 本發明涉及一種多頻天線，尤其涉及一 天線。 、 【先前技術】 隨著技術的發展，無線網卡在f訊領域得到越來越廣泛的應用。 現有的電腦只要通過USB介面料用連接設備連上無線網卡，即可且 備無線上網魏，給麵者縣極大的。射機等無無線鮮 ❹裝置類似’無線網卡也需要以天線作為主要的無線信號收發部件。與 手機天線相比，無線網卡使用的天線一般對頻率特性要求更高，經常 需要其能夠滿足多個使用頻段的使用需求。 現有的多頻天線-般具有較複雜的結構和較大的體積，並需要裝 設在適於魏及触錄健的絲位置吨得較佳敝發效果。但 無線網卡-般體積較小，其⑽触設空間很有限，也很難提供較寬 裕的適於發射及接收無線信號的安裝位置。因此，現有的多數多頻天 線難以直接安裝在無線網卡内收發無線信號使用。 m 【發明内容】 針對上述問題，有必要提供一種適於安裳在無線網卡内使用的多 頻天線。 一種多頻天線，包括一用於收發高頻信號的第一天線部及一用於 收發低頻信號且與該第-天線部連接的第二天線部，其中該第一天線 部包括依次連接的一第一主輻射部、一用於調節高頻共振頻率的第一 曲折部及-第-連接部，該第一主輻射部、第一曲折部及第一連接部 均為位於同一平面内的片體；該第二天線部包括依次連接的一第二連 201034292 祕頻共振鮮的第二鱗部及—第二球射部，該 .連接部連接，且該第二連接部、第二曲折部及第 -主輪射觸齡第—天_設置。 外丨及弟 在細目比，本發9職的錢鱗蝴練騎構，使| 網頻段上都具有較佳的輻雜能，⑽要的 較 小’可以方便地裝設在現有的無線網卡内供無線上網使用。1較 【實施方式】 ❹請參閱圖1，本發明的較佳實施例提供-多頻天線·，該多頻天 線100採用金屬等導體材料形成的薄板製成，其包括一第一天線㈣ =天線部2〇。其中該第一天線部1〇用於收發較高頻率的無線 L π*第一天線部2〇用於收發較低頻率的無線信號。 該第-天線部ίο包括依次連接的—第—主輻射部12、—第一曲 ^ Μ…第-連接部16及一第—饋人部18。該第一主輻射部η 為一矩形片體’其具有兩條相互平行的較長邊緣m、⑵及兩條料 ❹較長邊緣m鼓雜短邊緣⑵m。該第—主輻射部u的邊緣 121與邊緣124相交形成的一角125與該第一曲折部14連接。 該第-曲折部14為-具有往復曲折形狀的片體，其整體設於該第 一主輪射部12的邊緣12卜側，且與該第—主姉部12位於同一平 面内。該第-曲折部14的-端與該第一主轄射部12的上述角部125 相連’其另-端則在鄰近該第-主輕射部u的邊緣m的一側往復曲 折延伸若干次後與該第-連接部16連接。該第一曲折部14曲折延伸 的具體方式是從該角部125開始，首先沿第一主輕射部12上座該第一 5 201034292 曲折部Μ鄰近的邊緣121平行的方向延伸形成一大致相當於該邊緣 121長度的曲折段後折回，再沿與該邊緣m平行的方向延伸形成一 較短鱗段後再度折回，再沿與該邊緣121平行的方向延伸一更短長 度後第三次折延伸戦—最㈣折段作為其末端，並在該末端側 面與，亥第-連接部16連接。該第一曲折部14同側的每一段邊緣均處 於同-條直線上，使該第一曲折部14的整體輪廟呈現為一以上述第一 f輻射部的邊緣m為底邊，以該第一曲折部14與該第一連接部16 •連接處為頂點的三角形，亦即從第一連接部16經過第一曲折部μ至 第-主輪射部12形鑛寬結構。在實際製造過財，該第一曲折部 14的曲折段數量可以調整。 接在連接°M6為一矩形片體’其與該第—主轄射部12分別連 H 部14上姆的_，且位於該第—线射部及第 二：w所在的平面内。該第一連接部16 _端與該第一 1出的以末_錢接，域财端_面 -镇入㈣相互㈣連接。該第命部 1 ::主_12、第__14及該第_連：二 平面垂直的方向延伸，可用^=14及該第—連接部賴在的 - ±柄“加％ 逆钱P22、—第二曲折部24、一第 ㈣：二Γ饋入部28。該第二連接部22為-矩形片體， 與該第-墙部12、第—曲折部14及該第_連接部16均位於同— 201034292 I面内。該第二連接部22設置在鄕，射部i2的邊_ 一侧， 其一端垂直地連接到該第一連接部16的—側，然後沿與 部⑽緣m平行的方向延伸至其長度超__主輻射部2 與上述邊緣m垂直的另一邊緣122，其另一端與該第二曲折部 接0 該第二曲折部24為-具有曲折形狀的片體，其設置於該第一主輕 射部12的邊緣122 —侧’且位於與該第—主鋪部η、第一曲^ ❹14及該第-連接部16所在的平面垂直並與該邊緣122平行的另一平 面内。該第二曲折部14 一端與該第二連接部22延伸至超出該邊緣⑵ 的-端垂直連接，然後往復曲折多次形成等寬的方波形曲折結構。並 具體曲折方式是首先沿與該第一主輻射部12、第一曲折部Μ、該第一 連接部：16及該第二連接部22所在的平面垂直的方向延伸—定距離， 再沿與該第-主輻射部12、第—崎部14、該第一連接部％及該第 二連接部22所麵平面轉財向延伸—定雜後折回，然後再次沿 ❹上述垂直方向延相來，直至其長度與上料—次延伸的距離相近； 這樣即可構成-個方形的曲折段(圖未標）。該曲折段的末端可以再次 依照水準延伸·垂直延伸-水準延伸折回後垂直延伸水準延伸的順序 反復曲折多次，從而形成多個方形曲折段，且每段垂直延伸的距離彼. 此相等或減，每段水準延伸的距離彼此也相等或相近，使該第二曲 折部24整體呈現等寬的方波形結構。該等曲折段的數量可根據實際需 要加以調整。該第二曲折部24的末端按照上述方法垂直延伸一長度與 上述多個麟段减相近的㈣段(圖未標），通賴延伸段與該第二 7 201034292 主輻射部26連接。 該第二主輻射部26為一矩形片體，其設置於該第一主輻射部12 的邊緣123 —側，位於一與該第一主輻射部12、第一曲折部、第一連 接邠16及該第二連接部22所在平面及該第二曲折部24所在平面均垂 直的平面内，其延伸方向與該邊緣123平行，亦即與邊緣121及第一 連接4 22均平行。該第二主輕射部％的一邊緣長度與上述的該第二 曲折邛24末、延伸段的長度相等，該邊緣垂直地連接到該延伸段的侧 ❹面’使該第二主輻射部％與該第二曲折部％連接，並使二者處於相 互垂直的平面内。 該第二饋人部28為-矩形片體，其設置於該第—主輻射部以的 邊緣124 -侧，位於與該第二曲折部％所在平面平行的另—平面内， 其延伸方向與該邊緣124平行。該第二饋入部28的一端垂直地連接到 該第二主輕射部26的一角，使該第二饋入部28的一端垂直地連接到 該第一主輕射部26 ’並使二者處於相互垂直的平面内。該第二饋入部 28可用於連接無線網卡巾的其他電路，與上述的第—饋人部μ配合， 使該天線1〇〇接入完整的信號回路。 由以上結構特徵可以看出，該第二天線部2时的第二連接部2、 第曲折# 24、第二主輻射部26及第二饋人部28依次垂直地連接， 使^第二天線部2〇圍繞在第一天線部1〇四周而形成一個不完全的方 這樣，該多頻天線⑽的外部輪廓湖潔，可以給安 請參閱圖2 ’該多頻天線的結構使其可以安裝在—個長方 8 201034292 狀的安裝基體200上。安裝時只要將上述第一主輕射部22、第一曲折 部24、第-連接部16及第二連接部22均貼合於安裝基體的頂面， 第-饋入部18、第二曲折部22、第二主輪射部26及該第二饋入部28 分別貼合於安裝基體2〇〇的四侧面，即可使該多頻天線1〇〇的所有 部分均完全貼合在安裝基體2〇〇上，整體輪廓仍為規則的長方體，沒 有任何凸出、_等破壞輪廓酬性的部分^這樣就可以使該多頻天 線100的所有部分都獲得妥善的支揮和保護，且能夠更加方便地拿 _取、移動及安裝，且安裝時需要的裝設空間較小。 請參閱圖3 ’該多頻天線100安裝在該安裝基體1〇〇上之後，即 可連同該安裝基體200 -同安裝到-現有的無線網卡3⑻内。該無線 網卡300外部輪廓及内部空間均為長方體狀，故該多頻天線1〇〇及該 女裝基體200可以方便地容納於其内部。該多頻天線通過其第一 饋入部18及第二饋入部28與該無線網卡300的内部電路(圖未示)連 接，然後經由無線網卡300的USB介面301連接到一現有的電腦(圖 ©未示)’該電腦即可通過該多頻天線100收發無線信號以進行無線上網。 在該多頻天線100使用時，該第一天線部10主要用於收發高頻信 號。其由第一連接部16、第一曲折部14至第一主輻射部12具有漸寬 結構，可以有效地增加其高頻段的工作頻寬，而該第一曲折部14的彎 曲結構則可以用於調節高頻段的共振至使用所需的頻段。該第二天線 部20主要用於收發低頻信號’其第二饋入部28、第二主輻射部26及 第二曲折部24環繞在第一天線部的三個侧面，有助於形成低頻段 所需的共振長度，該第二曲折部24的彎曲結構則可以用於調節低頻段 9 201034292 的共振至使用所需的頻段。 實驗證明，該多頻天線100在包含DCS1800、PCS1900、UMTS2100 等多個可供無線上網使用的高頻頻段的1710MHz_22〇〇MHz頻寬範圍 内的平均輻射效率為76%左右，反射損耗小於_5分貝(dB);在包含 GSM850、EGSM900等多個可供無線上網使用的低頻頻段的 824MHz-960MHz頻寬範圍内平均輻射效率為54%左右，反射損耗小 於-3分貝(dB)，均能夠滿足3.5G無線網卡對天線性能的要求。 ❹ 乡不、上所述’本發明提供的多頻天線100在多個無線上網頻段上都 具有較佳的輻射性能，且結構簡單，需要的裝設空間較小，可以方便 地裝设在現有的無線網卡内供無線上網使用。 細上所述’本發明符合發明專利要件，爰依法提出專利申請。惟， 以上所述者僅為本發明之較佳實施例，本發明之範圍並不以上述實施 例為限’舉凡麟本紐藝之人士援依本發明之精神所狀等效修飾 或變化，皆應涵蓋於以下申請專利範圍内。 ❹【圖式簡單說明】 圖1為本發明多頻天線較佳實施例的立體圖。 圖2為圖1所稀乡頻天線安餘錄基社的示意圖。 圖3為圖1所示够頻天線裝設在無線網卡巾的示意圖。 【主要元件符號說明】 多頻天線 100 第一天線部 10 第一主輻射部 12 較長邊緣 121 、 123 較短邊緣 122、124 角部 125 201034292 第一曲折部 14 第一連接部 16 第一饋入部 18 第二天線部 20 第二連接部 22 第二曲折部 24 第二主輻射部 26 第二饋入部 28 安裝基體 200 無線網卡 300201034292 VI. Description of the Invention: [Technical Field of the Invention] A multi-frequency antenna suitable for a wireless network card The present invention relates to a multi-frequency antenna, and more particularly to an antenna. [Prior Art] With the development of technology, wireless network cards have become more and more widely used in the field of audio. As long as the existing computer is connected to the wireless network card through the connection device of the USB fabric, the wireless Internet access can be prepared, and the county is extremely large. A wireless device such as a radio transmitter is similar to a wireless network card. The antenna is also required to use an antenna as a main wireless signal transmitting and receiving unit. Compared with mobile phone antennas, antennas used in wireless network cards generally require higher frequency characteristics, and are often required to meet the needs of multiple frequency bands. The existing multi-frequency antenna generally has a relatively complicated structure and a large volume, and needs to be installed in a wire position suitable for Wei and tactile health to obtain a better burst effect. However, the wireless network card is generally small in size, and its (10) touch space is limited, and it is difficult to provide a relatively wide mounting position suitable for transmitting and receiving wireless signals. Therefore, most of the existing multi-frequency antennas are difficult to install directly in the wireless network card to send and receive wireless signals. m SUMMARY OF THE INVENTION In view of the above problems, it is necessary to provide a multi-frequency antenna suitable for use in a wireless network card. A multi-frequency antenna includes a first antenna portion for transmitting and receiving a high frequency signal and a second antenna portion for transmitting and receiving a low frequency signal and connected to the first antenna portion, wherein the first antenna portion includes a first main radiating portion, a first meandering portion for adjusting a high frequency resonant frequency, and a first connecting portion, wherein the first main radiating portion, the first meandering portion and the first connecting portion are all located on a same plane The second antenna portion includes a second scalar portion and a second spherical portion that are sequentially connected to each other in a second connection 201034292, and the connection portion is connected, and the second connection portion is The second zigzag portion and the first-main wheel shot contact age-day_set. In the case of the nephew and the younger brother, the money scales of the 9th position of the hairdressing exercise, so that the | network band has better spoke energy, (10) the smaller 'can be easily installed in the existing wireless network card It is available for wireless internet access. 1 [Embodiment] Referring to FIG. 1, a preferred embodiment of the present invention provides a multi-frequency antenna 100. The multi-frequency antenna 100 is formed of a thin plate formed of a conductor material such as metal, and includes a first antenna (4). = Antenna section 2〇. The first antenna unit 1 is configured to transmit and receive a higher frequency wireless L π* first antenna unit 2 for transmitting and receiving a lower frequency wireless signal. The first antenna portion ίο includes a first main radiating portion 12, a first curved portion, a first connecting portion 16, and a first feeding portion 18. The first main radiating portion η is a rectangular sheet body having two long edges m, (2) parallel to each other, and two long edges m, a short edge (2) m. An angle 125 formed by the intersection of the edge 121 of the first main radiating portion u and the edge 124 is connected to the first meandering portion 14. The first meandering portion 14 is a sheet having a reciprocating meandering shape, and is integrally provided on the side of the edge 12 of the first main wheel portion 12, and is located in the same plane as the first main portion 12. The end of the first meandering portion 14 is connected to the corner portion 125 of the first main illuminating portion 12, and the other end thereof is reciprocally extended on the side adjacent to the edge m of the first main illuminating portion u. After that, it is connected to the first connecting portion 16. The specific manner of extending the first meandering portion 14 is to start from the corner portion 125, and firstly extends along a direction parallel to the edge of the first main light-emitting portion 12 of the first 5 201034292. The meandering section of the length of the edge 121 is folded back, and then extends in a direction parallel to the edge m to form a shorter scale segment and then folded back, and then extends a shorter length in a direction parallel to the edge 121 and then extends for a third time. The 戦-most (four) folded section has its end, and is connected to the Heid-connecting portion 16 on the side of the end. Each edge of the same side of the first meandering portion 14 is on the same straight line, so that the whole wheel temple of the first meandering portion 14 is represented by an edge m of the first f-radiation portion as a bottom edge. The first meandering portion 14 and the first connecting portion 16 are connected at a apex triangle, that is, from the first connecting portion 16 through the first meandering portion μ to the first main portion of the first rotating portion 12. In actual production, the number of the zigzag segments of the first meandering portion 14 can be adjusted. Connected to the junction M6 is a rectangular sheet body _ which is connected to the first main radiant portion 12 with the _ of the H portion 14 and located in the plane of the first line portion and the second: w. The first connection portion 16 _ end is connected to the first one by the last _ money, and the domain _ surface - the town (4) is connected to each other (four). The first part of the first part: 1: main _12, the first __14 and the _ _ lian: the two planes extend in the vertical direction, and can be used as ^=14 and the - -handle of the first connecting portion "plus % inverse money P22, a second meandering portion 24, a fourth (fourth): two-turn feeding portion 28. The second connecting portion 22 is a rectangular piece, and the first wall portion 12, the first meandering portion 14, and the first connecting portion 16 are both Located in the same plane as 201034292. The second connecting portion 22 is disposed on the side _ side of the illuminating portion i2, one end of which is perpendicularly connected to the side of the first connecting portion 16, and then along the edge of the portion (10) The parallel direction extends to the other edge 122 whose length exceeds the main radiation portion 2 and is perpendicular to the edge m, and the other end thereof is connected to the second meander portion. The second meander portion 24 is a sheet having a meander shape. The edge of the first main light-emitting portion 12 is disposed on the side of the first main light-emitting portion 12 and is located perpendicular to the plane of the first main paving portion n, the first curved portion 14, and the first connecting portion 16, and is adjacent to the edge 122. In another plane parallel to the other, one end of the second meandering portion 14 is perpendicularly connected to the end of the second connecting portion 22 beyond the edge (2), and then reciprocated and folded repeatedly. The square-width meandering structure of equal width, and the specific meandering manner is first in a direction perpendicular to a plane in which the first main radiating portion 12, the first meandering portion Μ, the first connecting portion: 16 and the second connecting portion 22 are located Extending-fixing distance, and extending along the plane of the first main radiating portion 12, the first-sakis portion 14, the first connecting portion%, and the second connecting portion 22, and then folding back, and then again Extending along the vertical direction of the ❹ until its length is close to the distance of the feeding-sub-extending; thus, a square zigzag segment (not shown) can be formed. The end of the zigzag segment can be extended again according to the level and vertical The order of extension of the vertical extension level after the extension-level extension is repeatedly bent and folded a plurality of times to form a plurality of square meandering segments, and each of the vertically extending distances is equal to or equal to each other, and the distances of each of the horizontal extensions are equal or close to each other. The second meandering portion 24 as a whole has a square wave structure of equal width. The number of the meandering segments can be adjusted according to actual needs. The end of the second meandering portion 24 extends vertically by a length according to the above method. The plurality of phase-reduced sub-phases (four segments) (not shown) are connected to the second 7 201034292 main radiating portion 26. The second main radiating portion 26 is a rectangular piece, which is disposed in the first The edge 123 of the main radiating portion 12 is located on the plane of the first main radiating portion 12, the first meandering portion, the first connecting port 16 and the second connecting portion 22, and the plane of the second bent portion 24. In a plane that is perpendicular to each other, the extending direction is parallel to the edge 123, that is, parallel to the edge 121 and the first connection 4 22. The edge length of the second main light-emitting portion is the same as the second zigzag 24 described above. Finally, the length of the extension is equal, and the edge is perpendicularly connected to the side face of the extension' such that the second main radiation portion % is connected to the second meander portion and the two are in mutually perpendicular planes. The second feeding portion 28 is a rectangular piece body disposed on the edge 124 side of the first main radiation portion, located in another plane parallel to the plane of the second meandering portion, and extending in the same direction The edges 124 are parallel. One end of the second feeding portion 28 is perpendicularly connected to a corner of the second main light-emitting portion 26, such that one end of the second feeding portion 28 is perpendicularly connected to the first main light-emitting portion 26' and the two are In a plane perpendicular to each other. The second feeding portion 28 can be used to connect other circuits of the wireless card towel, and cooperate with the first feeding portion μ to connect the antenna 1 to the complete signal loop. It can be seen from the above structural features that the second connecting portion 2, the second meandering portion #24, the second main radiating portion 26, and the second feeding portion 28 are sequentially connected vertically in the second antenna portion 2, so that the second The antenna portion 2 is formed around the first antenna portion 1 to form an incomplete side. The outer contour of the multi-frequency antenna (10) is clean and can be referred to the structure of the multi-frequency antenna. It can be mounted on a rectangular base 10 201034292-like mounting base 200. The first main light-emitting portion 22, the first meandering portion 24, the first connecting portion 16, and the second connecting portion 22 are attached to the top surface of the mounting base, the first feeding portion 18 and the second curved portion. 22, the second main wheel portion 26 and the second feeding portion 28 are respectively attached to the four sides of the mounting base 2, so that all portions of the multi-frequency antenna 1〇〇 are completely attached to the mounting base 2 On the raft, the overall outline is still a regular cuboid, without any embossing, _, etc., which defeats the contours, so that all parts of the multi-frequency antenna 100 can be properly supported and protected, and can be more It is convenient to take, move and install, and the installation space required for installation is small. Referring to Fig. 3, the multi-frequency antenna 100 is mounted on the mounting base 1 and can be mounted together with the mounting base 200 into the existing wireless network card 3 (8). The outer contour and the inner space of the wireless network card 300 are cuboidal, so that the multi-frequency antenna 1 and the women's base 200 can be conveniently accommodated therein. The multi-frequency antenna is connected to an internal circuit (not shown) of the wireless network card 300 through the first feeding portion 18 and the second feeding portion 28, and then connected to an existing computer via the USB interface 301 of the wireless network card 300 (FIG. © Not shown) 'The computer can send and receive wireless signals through the multi-frequency antenna 100 for wireless Internet access. When the multi-frequency antenna 100 is in use, the first antenna unit 10 is mainly used for transmitting and receiving high frequency signals. The first connecting portion 16 and the first bent portion 14 to the first main radiating portion 12 have a widening structure, which can effectively increase the working bandwidth of the high frequency band, and the curved structure of the first bent portion 14 can be used. Adjust the resonance of the high frequency band to the frequency band required for use. The second antenna portion 20 is mainly used for transmitting and receiving low frequency signals. The second feeding portion 28, the second main radiating portion 26 and the second meandering portion 24 surround the three sides of the first antenna portion, contributing to low formation. The required resonant length of the frequency band, the curved structure of the second meandering portion 24 can be used to adjust the resonance of the low frequency band 9 201034292 to the frequency band required for use. The experiment proves that the multi-frequency antenna 100 has an average radiation efficiency of about 76% in a range of 1710 MHz_22 〇〇 MHz including a DCS1800, a PCS1900, a UMTS2100 and the like, and a high frequency band for wireless Internet access, and the reflection loss is less than _5. Decibel (dB); in the 824MHz-960MHz bandwidth range including GSM850, EGSM900 and other low-frequency bands for wireless Internet access, the average radiation efficiency is about 54%, and the reflection loss is less than -3 decibels (dB). 3.5G wireless network card requirements for antenna performance.乡 乡 乡 , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , The wireless network card is used for wireless Internet access. The above description is in accordance with the invention patent requirements, and the patent application is filed according to law. However, the above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited to the above-described embodiments, and the person of the present invention is equivalently modified or changed according to the spirit of the present invention. All should be covered by the following patent application. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a preferred embodiment of a multi-frequency antenna of the present invention. FIG. 2 is a schematic diagram of the rare rural frequency antenna of the FIG. 1 . FIG. 3 is a schematic diagram of the frequency-capable antenna shown in FIG. 1 installed on a wireless network card towel. [Description of main component symbols] Multi-frequency antenna 100 First antenna section 10 First main radiating section 12 Long edge 121, 123 Short edge 122, 124 Corner 125 201034292 First meandering portion 14 First connecting portion 16 First Feeding portion 18 second antenna portion 20 second connecting portion 22 second meandering portion 24 second main radiating portion 26 second feeding portion 28 mounting base 200 wireless network card 300
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