【27】 下面將結合本發明實施例中之附圖，對本發明實施例中之技術方案進行清楚、完整地描述，顯然，所描述之實施例僅僅是本發明一部分實施例，而不是全部之實施例。基於本發明中之實施例，所屬領域具有通常知識者於沒有做出創造性勞動前提下所獲得之所有其他實施例，均屬於本發明保護之範圍。 【28】 需要說明之是，當一個元件被稱為“電連接”另一個元件，它可直接於另一個元件上或者亦可存在居中之元件。當一個元件被認為是“電連接”另一個元件，它可是接觸連接，例如，可是導線連接之方式，亦可是非接觸式連接，例如，可是非接觸式耦合之方式。 【29】 除非另有定義，本文所使用之所有之技術與科學術語與屬於所屬領域具有通常知識者通常理解之含義相同。本文中於本發明之說明書中所使用之術語僅是為描述具體之實施例之目不是旨在於限制本發明。本文所使用之術語“及/或”包括一個或多個相關之所列項目的任意之與所有之組合。 【30】 下面結合附圖，對本發明之一些實施方式作詳細說明。於不衝突之情況下，下述之實施例及實施例中之特徵可相互組合。 【31】 請參閱圖1，本發明較佳實施方式提供一種天線結構100，其應用於行動電話、個人數位助理等無線通訊裝置200中，用以發射、接收無線電波以傳遞、交換無線訊號。 【32】 該無線通訊裝置200還包括殼體21。所述殼體21可為所述無線通訊裝置200之外觀件。所述殼體21包括背板211及框體212。所述框體212及背板211可是一體成型。所述框體212環繞所述背板211之周緣設置，以與所述背板211共同圍成一容置空間213（請參閱圖5）。所述容置空間213用以容置所述無線通訊裝置200之基板、處理單元等電子元件或電路模組於其內。所述殼體21還包括第一端部214及第二端部215。於本實施例中，所述第一端部214為所述無線通訊裝置200之底部，其靠近所述無線通訊裝置200之通用序列匯流排（Universal Serial Bus，USB）介面模組（圖未示）設置。所述第二端部215為所述無線通訊裝置200之頂部，其靠近所述無線通訊裝置200之攝像頭模組（圖未示）設置。另外，所述第一端部214背離所述容置空間213之表面形成有一凹槽23，以於所述第一端部214之位置形成一承載部25。所述承載部25與所述背板211共同形成一臺階狀結構。於本實施例中，所述承載部25包括第一表面251及第二表面252。其中，所述承載部25對應所述背板211之部分為所述第一表面251。所述承載部25對應所述邊框212之部分為所述第二表面252。 【33】 請一併參閱圖2，所述天線結構100包括第一天線11、第二天線13及第三天線15。於本實施例中，所述第一天線11及第二天線13設置於所述第一端部214，且兩者間隔設置。所述第三天線15設置於所述第二端部215，且與所述第一天線11及第二天線13均間隔設置。 【34】 具體地，於本實施例中，所述天線結構100中之第一天線11設置於所述無線通訊裝置200之右下角，即所述第一端部214之右側。所述第二天線13設置於所述無線通訊裝置200之左下角，即所述第一端部214之左側。所述第三天線15設置於所述無線通訊裝置200之頂部，即所述第二端部215之中部位置。當然，可理解之是，所述第一天線11、第二天線13及第三天線15之位置不局限於上述所述，其還可根據具體情況進行相應調整，僅需保證所述第一天線11與所述第二天線13設置於所述無線通訊裝置200之底部，即第一端部214，所述第三天線15設置於所述無線通訊裝置200之頂部，即第二端部215即可。 【35】 請一併參閱圖3，所述無線通訊裝置200還包括射頻收發模組27。所述第一天線11、第二天線13以及第三天線15均與所述射頻收發模組27電連接，以與所述射頻收發模組27進行通訊，進而實現無線訊號之接收及發射。 【36】 請一併參閱圖4及圖5，於本實施例中，所述第一天線11設置於所述承載部25上。所述第一天線11包括第一饋入點110、第一輻射部111、第二輻射部112以及第一接地點113。所述第一饋入點110設置於所述第一表面251，且與所述射頻收發模組27之訊號饋入點（圖未示）電連接，用以為所述第一天線11饋入電流訊號。所述第一輻射部111為一副天線。所述第一輻射部111為一曲折狀片體，其整體佈設於所述第一表面251及第二表面252。所述第一輻射部111包括依次連接之第一輻射段114、第二輻射段115、第三輻射段116、第四輻射段117、第五輻射段118、第六輻射段119及第七輻射段120。所述第一輻射段114大致呈矩形條狀，其佈設於所述第一表面251且電連接至所述第一饋入點110。所述第二輻射段115大致呈矩形條狀，其佈設於所述第一表面251。所述第二輻射段115之一端垂直連接至所述第一輻射段114遠離所述第一饋入點110之一端，並沿靠近所述第二表面252之方向延伸。 【37】 所述第三輻射段116大致呈矩形條狀，其佈設於所述第二表面252。所述第三輻射段116之一端垂直連接至所述第二輻射段115遠離所述第一輻射段114之一端，並沿平行所述第一輻射段114且靠近所述第一饋入點110之方向延伸。於本實施例中，所述第一輻射段114與所述第三輻射段116設置於所述第二輻射段115之同一側。所述第一輻射段114、所述第二輻射段115與所述第三輻射段116共同形成大致呈U型之結構。於本實施例中，所述第一輻射段114之長度大於所述第三輻射段116之長度。 【38】 所述第四輻射段117大致呈矩形條狀，其佈設於所述第一表面251。所述第四輻射段117之一端垂直連接至所述第三輻射段116遠離所述第二輻射段115之一端，並沿平行所述第二輻射段115且靠近所述第一輻射段114之方向延伸。於本實施例中，所述第四輻射段117之長度小於所述第二輻射段115之長度。 【39】 所述第五輻射段118大致呈矩形條狀，其佈設於所述第一表面251。所述第五輻射段118之一端垂直連接至所述第四輻射段117遠離所述第三輻射段116之一端，並沿平行所述第一輻射段114且靠近所述第二輻射段115之方向延伸。於本實施例中，所述第五輻射段118之長度小於所述第三輻射段116之長度。 【40】 所述第六輻射段119大致呈矩形條狀，其佈設於所述第一表面251。所述第六輻射段119之一端垂直連接至所述第五輻射段118遠離所述第四輻射段117之一端，並沿平行所述第二輻射段115且靠近所述第一輻射段114之方向延伸。於本實施例中，所述第六輻射段119之長度小於所述第四輻射段117之長度。 【41】 所述第七輻射段120大致呈矩形條狀，其一端垂直連接至所述第六輻射段119遠離所述第五輻射段118之一端，並沿平行所述第一輻射段114且遠離所述第二輻射段115之方向延伸。於本實施例中，所述第七輻射段120之長度大於所述第三輻射段116之長度，但小於所述第一輻射段114之長度。另外，所述第一輻射段114、第三輻射段116、第四輻射段117、第五輻射段118、第六輻射段119以及第七輻射段120均設置於所述第二輻射段115之同一側。 【42】 所述第二輻射部112為一主天線。所述第二輻射部112之整體長度小於所述第一輻射部111之長度。所述第二輻射部112包括第一輻射臂121及第二輻射臂122。所述第一輻射臂121佈設於所述第一表面251上。所述第一輻射臂121之一端弧形過渡連接至所述第一饋入點110遠離所述第一輻射段114之一側，且沿遠離所述第一輻射段114且靠近所述第二表面252之方向延伸。所述第二輻射臂122大致呈弧形片狀，且佈設於所述第二表面252上。所述第二輻射臂122之一端弧形過渡連接至所述第一輻射臂121遠離所述第一饋入點110之一端，並沿靠近所述第三輻射段116之方向延伸。於本實施例中，所述第一輻射臂121之長度小於所述第二輻射臂122之長度。 【43】 所述第一接地點113設置於所述第一輻射部111上。具體地，所述第一接地點113設置於所述第一輻射段114靠近所述第一輻射臂121之一端。所述第一接地點113與所述射頻收發模組27之接地點（圖未示）電連接，且電連接至所述第一輻射部111，進而為所述第一天線11提供接地。 【44】 可理解，當電流自所述第一饋入點110饋入後，所述電流將依次流經所述第一輻射段114、第二輻射段115、第三輻射段116、第四輻射段117、第五輻射段118、第六輻射段119及第七輻射段120，並藉由所述第一接地點113接地，進而使得所述第一輻射部111僅接收第一頻段之訊號。另外，流入所述第一饋入點110之電流還將流經所述第一輻射臂121及第二輻射臂122，進而使得所述第二輻射部112可接收及發射一第二頻段之訊號。於本實施例中，所述第一頻段為一低頻段，其頻率範圍為729-960MHz。所述第二頻段為一高頻段，其頻率範圍為2300-2700MHz。 【45】 請一併參閱圖5，所述第二天線13設置於所述承載部25上，且與所述第一天線11間隔設置。所述第二天線13為一主天線。於本實施例中，所述第二天線13包括第二饋入點130、第二接地點131、第一延伸部132以及第二延伸部133。所述第二饋入點130設置於所述第一表面251。所述第二饋入點130設置於所述第一饋入點110遠離所述第一接地點113之一側，且與所述第一饋入點110間隔設置。所述第二饋入點130用以與所述射頻收發模組27之訊號饋入點電連接，以為所述第二天線13饋入電流訊號。所述第二接地點131設置於所述第一表面251上，且位於所述第一饋入點110與所述第二饋入點130之間。所述第二接地點131用於與所述射頻收發模組27之接地點電連接，以為所述第二天線13提供接地。 【46】 所述第一延伸部132大致呈矩形片狀，且佈設於所述第一表面251上。所述第一延伸部132垂直連接至所述第二饋入點130及第二接地點131之一端，且沿平行所述第二輻射段114且靠近所述第三輻射段115之方向延伸。於本實施例中，所述第一延伸部132之寬度大於所述第二輻射段115之寬度。 【47】 所述第二延伸部133包括依次連接之第一延伸段134、第二延伸段135、第三延伸段136以及第四延伸段137。所述第一延伸段134大致呈矩形條狀，其佈設於所述第一表面251。所述第一延伸段134之一端垂直連接至所述第二饋入點130遠離所述第二接地點131之一側，並沿平行所述第一延伸部132且遠離所述第一輻射段114及第二輻射段115之方向延伸。所述第二延伸段135大致呈弧形片狀，其佈設於所述第一表面251。所述第二延伸段135之一端弧形連接至所述第一延伸段134遠離所述第二饋入點130之一端，並沿平行所述第一輻射段114且靠近所述第二輻射段115之方向延伸。 【48】 所述第三延伸段136大致呈直條狀，其佈設於所述第一表面251。所述第三延伸段136之一端垂直連接至所述第二延伸段135遠離所述第一延伸段134之一端，並沿平行所述第二輻射段115且靠近所述第二表面252之方向延伸。所述第四輻射段137大致呈弧形片狀，其佈設於所述第二表面252。所述第四輻射段137之一端垂直連接至所述第三延伸段136遠離所述第二延伸段135之一端，並沿平行所述第二延伸段135且遠離所述第三輻射段116之方向延伸。 【49】 於本實施例中，所述第二延伸部133之整體長度大於所述第一延伸部132之整體長度。當電流自所述第二饋入點130饋入後，所述電流將流經所述第一延伸部132，進而使得所述第一延伸部132可接收及發射第三頻段之訊號。另外，流入所述第二饋入點130之電流還將依次流經所述第二延伸部133之第一延伸段134、第二延伸段135、第三延伸段136以及第四延伸段137，並藉由所述第二饋入點130接地，進而使得所述第二延伸部133可接收及發射第四頻段之訊號。於本實施例中，所述第三頻段為一中頻段，其頻率範圍為1710-2170MHz。所述第四頻段為一低頻段，其頻率範圍為824-894MHz。 【50】 請一併參閱圖6，所述第三天線15為一副天線，其設置於所述容置空間213內。所述容置空間213包括底壁217及環繞所述底壁217設置之周壁219。所述第三天線15整體佈設於所述底壁217上，並延伸至所述周壁219。所述第三天線15包括第三饋入點150、第三接地點151、第一耦合部152及第二耦合部153。所述第三饋入點150設置於所述底壁217上，且與所述射頻收發模組27之訊號饋入點電連接，用以為所述第三天線15饋入電流訊號。所述第三接地點151設置於所述底壁217上，且與所述第三饋入點150間隔設置。所述第三接地點151與所述射頻收發模組27之接地點電連接，用以為所述第三天線15提供接地。 【51】 所述第一耦合部152包括第一耦合臂154、第二耦合臂155、第三耦合臂156、第四耦合臂157、第五耦合臂158以及第六耦合臂159。所述第一耦合臂154大致呈矩形條狀，其一端電連接至所述第三饋入點150。所述第二耦合臂155大致呈矩形條狀，其佈設于所述容置空間213之底壁217上。所述第二耦合臂155之一端垂直連接至所述第一耦合臂154遠離所述第三饋入點150之一端，並沿靠近所述容置空間213之周壁219之方向延伸。 【52】 所述第三耦合臂156大致呈矩形條狀，其佈設于所述容置空間213之底壁217上。所述第三耦合臂156之一端垂直連接至所述第二耦合臂155遠離所述第一耦合臂154之一端，並沿平行所述第一耦合臂154且遠離所述第三接地點151之方向延伸，直至越過所述第三饋入點150。於本實施例中，所述第三耦合臂156之長度大於所述第一耦合臂154之長度。所述第四耦合臂157大致呈矩形條狀，其佈設于所述容置空間213之周壁219上。所述第四耦合臂157之一端弧形過渡連接至所述第三耦合臂156遠離所述第二耦合臂155之一端，並延伸至所述所述周壁219。 【53】 所述第五耦合臂158及第六耦合臂159均設置於所述容置空間213之周壁219。所述第五耦合臂158及第六耦合臂159均呈矩形條狀。所述第五耦合臂158及第六耦合臂159之一端均垂直連接至所述第四耦合臂157遠離所述第三耦合臂156之一端，並分別沿兩個相反之方向延伸。於本實施例中，所述第五耦合臂158與所述第六耦合臂159之長度相當，且位於同一直線上，進而與所述第四耦合臂157共同構成大致呈T型之結構。 【54】 所述第二耦合部153整體佈設于所述容置空間213之底壁217上。所述第二耦合部153包括依次連接之第一耦合段160、第二耦合段161及第三耦合段162。所述第一耦合段160大致呈矩形條狀，其佈設于所述容置空間213之底壁217上。所述第一耦合段160之一端電連接至所述第三接地點151，且沿遠離所述第一耦合臂154之方向延伸。所述第二耦合段161大致呈矩形條狀，其一端垂直連接至所述所述第一耦合段160遠離所述第三接地點151之一端，並沿平行所述第二耦合臂155且靠近所述容置空間213之周壁219之方向延伸。所述第三耦合段162大致呈矩形條狀，其一端垂直連接至所述第二耦合段161遠離所述第一耦合段160之一端，並沿平行所述第一耦合段160且靠近所述第一耦合部152之方向延伸，直至垂直連接至所述第二耦合臂155與所述第三耦合臂156之連接處。 【55】 於本實施例中，所述第一耦合部152之整體長度大於所述第二耦合部153之整體長度。當電流自所述第三饋入點150饋入後，所述電流將流經所述第一耦合臂154、第二耦合臂155、第三耦合臂156、第四耦合臂157以及第六耦合臂159，進而使得所述第一耦合部152僅接收第五頻段之訊號。另外，流入所述第三饋入點150之電流還將流經所述第一耦合臂154、第二耦合臂155、第三耦合臂156、第四耦合臂157以及第五耦合臂158，進而使得所述第一耦合部152僅接收第六頻段之訊號。於本實施例中，所述第五頻段為一中頻段，所述第六頻段為一高頻段。所述第五頻段及第六頻段之頻率範圍為1805-2690MHz。 【56】 圖7為上述天線結構100中第一天線11之S參數（散射參數）曲線圖。圖8為上述天線結構100中第二天線13之S參數（散射參數）曲線圖。圖9為上述天線結構100中第三天線15之S參數（散射參數）曲線圖。顯然，由上述圖7至圖9可知，該天線結構100具有較佳之頻寬，且滿足天線設計要求。 【57】 圖10為上述天線結構100中第一天線11之輻射效率曲線圖。圖11為上述天線結構100中第二天線13之輻射效率曲線圖。圖12為上述天線結構100中第三天線15之輻射效率曲線圖。顯然，由上述圖10至圖12可知，當該天線結構100可工作於多個通訊系統，且均具有較佳之輻射效率，滿足一般天線之設計要求。 【58】 請一併參閱下附表1，為所述天線結構100工作於各頻率時之包絡相關係數（ECC）值。顯然，當所述天線結構100工作於各頻段時，其均具有較低之包絡相關係數ECC。 【59】 表1 天線結構100之包絡相關係數（ECC）值
【60】 顯然，由於所述天線結構100中每一個天線均設置有單獨之訊號饋入點，例如第一天線11設置有第一饋入點110，第二天線13設置有第二饋入點130，第三天線15設置有第三饋入點150。如此，該三個天線相互之間不會干擾，且每一個天線均可工作於至少兩個頻段，進而使得所述天線結構100具有較寬之頻寬，可有效兼顧長期演進技術升級版(LTE-Advanced)之載波聚合(CA，Carrier Aggregation)功能，且具有較低之包絡相關係數（ECC）。再者，與習知之天線相比，該天線結構100僅需設計三支天線，便可達到寬頻設計，如此無需佔用所述無線通訊裝置200過多有限之空間，且使得其天線設計更具靈活性。 【61】 可理解，所述天線結構100中之第一天線11中之第二輻射部112及第二天線13均為主天線，如此可用以接收及發射相應頻段之訊號，例如所述第一天線11中之第二輻射部112及第二天線13可至少工作於第二頻段（2300-2700MHz）、第三頻段（1710-2170MHz）以及第四頻段（824-894MHz），即所述第一天線11中之第二輻射部112及第二天線13可共同涵蓋至低、中、高頻，並具有較寬頻寬。另外，所述天線結構100中之第三天線15為副天線，且所述第一天線11中之第一輻射部111亦承擔副天線之功能，用以接收相應頻段之訊號，例如所述第一天線11中之第一輻射部111及第三天線15可至少工作於第一頻段（729-960MHz）、第五頻段以及第六頻段（1805-2690MHz），即所述第一天線11中之第一輻射部111及第三天線15亦可共同涵蓋至低、中、高頻，並具有較寬頻寬。 【62】 以上所述，僅為本發明的較佳實施例，並非是對本發明作任何形式上的限定。另外，本領域技術人員還可在本發明精神內做其它變化，當然，這些依據本發明精神所做的變化，都應包含在本發明所要求保護的範圍之內。The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of them are implemented. example. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without the creative work are all within the scope of the present invention. [28] It should be noted that when an element is referred to as being "electrically connected" to another element, it can be directed to the other element. When an element is considered to be "electrically connected" to another element, it can be a contact connection, for example, a wire connection or a non-contact connection, for example, a non-contact coupling. [29] Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the art. The terminology used in the description of the invention herein is for the purpose of describing the particular embodiments. The term "and/or" used herein includes any and all combinations of one or more of the associated listed items. [30] Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The features of the embodiments and examples described below may be combined with each other without conflict. Referring to FIG. 1 , a preferred embodiment of the present invention provides an antenna structure 100 for use in a wireless communication device 200 such as a mobile phone or a personal digital assistant for transmitting and receiving radio waves to transmit and exchange wireless signals. [32] The wireless communication device 200 further includes a housing 21. The housing 21 can be an appearance of the wireless communication device 200. The housing 21 includes a back plate 211 and a frame 212. The frame 212 and the back plate 211 may be integrally formed. The frame 212 is disposed around the periphery of the back plate 211 to define an accommodating space 213 together with the back plate 211 (please refer to FIG. 5 ). The accommodating space 213 is configured to receive an electronic component or a circuit module of a substrate, a processing unit, and the like of the wireless communication device 200. The housing 21 further includes a first end 214 and a second end 215. In the embodiment, the first end portion 214 is the bottom of the wireless communication device 200, and is adjacent to the universal serial bus (USB) interface module of the wireless communication device 200 (not shown) ) Settings. The second end portion 215 is a top portion of the wireless communication device 200 and is disposed adjacent to a camera module (not shown) of the wireless communication device 200. In addition, a groove 23 is formed on the surface of the first end portion 214 away from the accommodating space 213 to form a bearing portion 25 at the position of the first end portion 214. The carrying portion 25 and the backing plate 211 together form a stepped structure. In the embodiment, the carrying portion 25 includes a first surface 251 and a second surface 252. The portion of the carrying portion 25 corresponding to the back plate 211 is the first surface 251. The portion of the bearing portion 25 corresponding to the frame 212 is the second surface 252. Referring to FIG. 2 together, the antenna structure 100 includes a first antenna 11, a second antenna 13, and a third antenna 15. In this embodiment, the first antenna 11 and the second antenna 13 are disposed at the first end portion 214, and are spaced apart from each other. The third antenna 15 is disposed at the second end portion 215 and is spaced apart from the first antenna 11 and the second antenna 13 . Specifically, in the embodiment, the first antenna 11 in the antenna structure 100 is disposed at a lower right corner of the wireless communication device 200, that is, a right side of the first end portion 214. The second antenna 13 is disposed at a lower left corner of the wireless communication device 200, that is, to the left of the first end portion 214. The third antenna 15 is disposed at the top of the wireless communication device 200, that is, at a position intermediate the second end portion 215. Of course, it can be understood that the positions of the first antenna 11, the second antenna 13, and the third antenna 15 are not limited to the foregoing, and may be adjusted accordingly according to specific situations, and only need to ensure the foregoing An antenna 11 and the second antenna 13 are disposed at the bottom of the wireless communication device 200, that is, the first end portion 214, and the third antenna 15 is disposed at the top of the wireless communication device 200, that is, the second End 215 is sufficient. [35] Please refer to FIG. 3 together, the wireless communication device 200 further includes a radio frequency transceiver module 27. The first antenna 11, the second antenna 13, and the third antenna 15 are electrically connected to the radio frequency transceiver module 27 to communicate with the radio frequency transceiver module 27, thereby implementing wireless signal reception and transmission. . [36] Please refer to FIG. 4 and FIG. 5 together. In this embodiment, the first antenna 11 is disposed on the carrying portion 25. The first antenna 11 includes a first feed point 110, a first radiating portion 111, a second radiating portion 112, and a first grounding point 113. The first feed point 110 is disposed on the first surface 251 and electrically connected to a signal feeding point (not shown) of the radio frequency transceiver module 27 for feeding the first antenna 11 Current signal. The first radiating portion 111 is a pair of antennas. The first radiating portion 111 is a meander-shaped sheet, and is disposed on the first surface 251 and the second surface 252 as a whole. The first radiating portion 111 includes a first radiating section 114, a second radiating section 115, a third radiating section 116, a fourth radiating section 117, a fifth radiating section 118, a sixth radiating section 119, and a seventh radiating radiation which are sequentially connected. Segment 120. The first radiating section 114 has a substantially rectangular strip shape and is disposed on the first surface 251 and electrically connected to the first feeding point 110. The second radiating section 115 has a substantially rectangular strip shape and is disposed on the first surface 251. One end of the second radiating section 115 is vertically connected to the first radiating section 114 away from one end of the first feeding point 110 and extends in a direction close to the second surface 252. The third radiating section 116 has a substantially rectangular strip shape and is disposed on the second surface 252. One end of the third radiating section 116 is vertically connected to the second radiating section 115 away from one end of the first radiating section 114, and is parallel to the first radiating section 114 and close to the first feeding point 110 The direction extends. In this embodiment, the first radiating section 114 and the third radiating section 116 are disposed on the same side of the second radiating section 115. The first radiating section 114, the second radiating section 115 and the third radiating section 116 together form a substantially U-shaped structure. In this embodiment, the length of the first radiating section 114 is greater than the length of the third radiating section 116. The fourth radiating section 117 has a substantially rectangular strip shape and is disposed on the first surface 251. One end of the fourth radiating section 117 is perpendicularly connected to the third radiating section 116 away from one end of the second radiating section 115, and is parallel to the second radiating section 115 and adjacent to the first radiating section 114 The direction extends. In this embodiment, the length of the fourth radiating section 117 is smaller than the length of the second radiating section 115. The fifth radiating section 118 has a substantially rectangular strip shape and is disposed on the first surface 251 . One end of the fifth radiating section 118 is vertically connected to the fourth radiating section 117 away from one end of the third radiating section 116, and is parallel to the first radiating section 114 and close to the second radiating section 115. The direction extends. In this embodiment, the length of the fifth radiating section 118 is smaller than the length of the third radiating section 116. The sixth radiating section 119 is substantially rectangular in shape and is disposed on the first surface 251. One end of the sixth radiating section 119 is perpendicularly connected to the fifth radiating section 118 away from one end of the fourth radiating section 117, and is parallel to the second radiating section 115 and adjacent to the first radiating section 114. The direction extends. In this embodiment, the length of the sixth radiating section 119 is smaller than the length of the fourth radiating section 117. The seventh radiant section 120 has a substantially rectangular strip shape, one end of which is perpendicularly connected to the sixth radiant section 119 away from one end of the fifth radiant section 118, and is parallel to the first radiant section 114 and Extending away from the direction of the second radiant section 115. In this embodiment, the length of the seventh radiating section 120 is greater than the length of the third radiating section 116, but smaller than the length of the first radiating section 114. In addition, the first radiating section 114, the third radiating section 116, the fourth radiating section 117, the fifth radiating section 118, the sixth radiating section 119, and the seventh radiating section 120 are all disposed in the second radiating section 115. The same side. [42] The second radiating portion 112 is a main antenna. The overall length of the second radiating portion 112 is smaller than the length of the first radiating portion 111. The second radiating portion 112 includes a first radiating arm 121 and a second radiating arm 122. The first radiating arm 121 is disposed on the first surface 251. One end of the first radiating arm 121 is arcuately connected to the first feeding point 110 away from the side of the first radiating section 114, and is away from the first radiating section 114 and close to the second The surface 252 extends in the direction. The second radiating arm 122 is substantially in the shape of an arc and is disposed on the second surface 252. One end of the second radiating arm 122 is arcuately connected to the first radiating arm 121 away from one end of the first feeding point 110 and extends in a direction close to the third radiating section 116. In this embodiment, the length of the first radiating arm 121 is smaller than the length of the second radiating arm 122. [43] The first grounding point 113 is disposed on the first radiating portion 111. Specifically, the first grounding point 113 is disposed at one end of the first radiating section 114 near the first radiating arm 121. The first grounding point 113 is electrically connected to a grounding point (not shown) of the radio frequency transceiver module 27, and is electrically connected to the first radiating portion 111, thereby providing grounding for the first antenna 11. [44] It can be understood that when a current is fed from the first feed point 110, the current will sequentially flow through the first radiant section 114, the second radiant section 115, the third radiant section 116, and the fourth. The radiant section 117, the fifth radiant section 118, the sixth radiant section 119, and the seventh radiant section 120 are grounded by the first grounding point 113, so that the first radiating section 111 receives only the signal of the first frequency band. . In addition, the current flowing into the first feeding point 110 will also flow through the first radiating arm 121 and the second radiating arm 122, so that the second radiating portion 112 can receive and transmit a signal of the second frequency band. . In this embodiment, the first frequency band is a low frequency band, and the frequency range is 729-960 MHz. The second frequency band is a high frequency band, and the frequency range is 2300-2700 MHz. Referring to FIG. 5 , the second antenna 13 is disposed on the carrying portion 25 and spaced apart from the first antenna 11 . The second antenna 13 is a main antenna. In this embodiment, the second antenna 13 includes a second feed point 130, a second ground point 131, a first extension 132, and a second extension 133. The second feed point 130 is disposed on the first surface 251. The second feeding point 130 is disposed at a side of the first feeding point 110 away from the first grounding point 113 and spaced apart from the first feeding point 110. The second feed point 130 is electrically connected to the signal feed point of the radio frequency transceiver module 27 to feed the current signal to the second antenna 13 . The second grounding point 131 is disposed on the first surface 251 and between the first feeding point 110 and the second feeding point 130. The second grounding point 131 is electrically connected to a grounding point of the radio frequency transceiver module 27 to provide grounding for the second antenna 13. The first extending portion 132 is substantially in the shape of a rectangular plate and is disposed on the first surface 251. The first extending portion 132 is perpendicularly connected to one end of the second feeding point 130 and the second grounding point 131 and extends in a direction parallel to the second radiating section 114 and adjacent to the third radiating section 115. In this embodiment, the width of the first extending portion 132 is greater than the width of the second radiating portion 115. The second extension portion 133 includes a first extension section 134, a second extension section 135, a third extension section 136, and a fourth extension section 137 that are sequentially connected. The first extension 134 has a substantially rectangular strip shape and is disposed on the first surface 251 . One end of the first extension 134 is vertically connected to one side of the second feed point 130 away from the second ground point 131, and is parallel to the first extension 132 and away from the first radiant section The direction of 114 and the second radiating section 115 extends. The second extension 135 is substantially in the shape of an arc and is disposed on the first surface 251 . One end of the second extension 135 is arcuately connected to one end of the first extension 134 away from the second feed point 130, and is parallel to the first radiant section 114 and adjacent to the second radiant section Extends in the direction of 115. The third extension 136 is substantially straight and disposed on the first surface 251 . One end of the third extension 136 is perpendicularly connected to one end of the second extension 135 away from the first extension 134 and in a direction parallel to the second radiant section 115 and adjacent to the second surface 252 extend. The fourth radiating section 137 is substantially in the shape of an arc and is disposed on the second surface 252. One end of the fourth radiating section 137 is perpendicularly connected to one end of the third extending section 136 away from the second extending section 135, and is parallel to the second extending section 135 and away from the third radiating section 116. The direction extends. In this embodiment, the overall length of the second extension portion 133 is greater than the overall length of the first extension portion 132. When a current is fed from the second feed point 130, the current will flow through the first extension 132, thereby allowing the first extension 132 to receive and transmit a signal of the third frequency band. In addition, the current flowing into the second feed point 130 will also flow through the first extension 134, the second extension 135, the third extension 136, and the fourth extension 137 of the second extension 133 in sequence. And the second feeding point 130 is grounded, so that the second extending portion 133 can receive and transmit the signal of the fourth frequency band. In this embodiment, the third frequency band is a medium frequency band, and the frequency range is 1710-2170 MHz. The fourth frequency band is a low frequency band and has a frequency range of 824-894 MHz. [00] Please refer to FIG. 6 , the third antenna 15 is a pair of antennas disposed in the accommodating space 213 . The accommodating space 213 includes a bottom wall 217 and a peripheral wall 219 disposed around the bottom wall 217 . The third antenna 15 is entirely disposed on the bottom wall 217 and extends to the peripheral wall 219. The third antenna 15 includes a third feed point 150 , a third ground point 151 , a first coupling portion 152 , and a second coupling portion 153 . The third feeding point 150 is disposed on the bottom wall 217 and electrically connected to the signal feeding point of the RF transceiver module 27 for feeding a current signal to the third antenna 15 . The third grounding point 151 is disposed on the bottom wall 217 and spaced apart from the third feeding point 150. The third grounding point 151 is electrically connected to the grounding point of the radio frequency transceiver module 27 to provide grounding for the third antenna 15. The first coupling portion 152 includes a first coupling arm 154, a second coupling arm 155, a third coupling arm 156, a fourth coupling arm 157, a fifth coupling arm 158, and a sixth coupling arm 159. The first coupling arm 154 has a substantially rectangular strip shape, and one end thereof is electrically connected to the third feeding point 150. The second coupling arm 155 is substantially in the shape of a strip, and is disposed on the bottom wall 217 of the accommodating space 213. One end of the second coupling arm 155 is vertically connected to one end of the first coupling arm 154 away from the third feeding point 150 and extends in a direction close to the peripheral wall 219 of the accommodating space 213. The third coupling arm 156 has a substantially rectangular strip shape and is disposed on the bottom wall 217 of the accommodating space 213. One end of the third coupling arm 156 is perpendicularly connected to the second coupling arm 155 away from one end of the first coupling arm 154, and is parallel to the first coupling arm 154 and away from the third grounding point 151 The direction extends until the third feed point 150 is crossed. In this embodiment, the length of the third coupling arm 156 is greater than the length of the first coupling arm 154. The fourth coupling arm 157 is substantially in the shape of a strip, and is disposed on the peripheral wall 219 of the accommodating space 213. One end of the fourth coupling arm 157 is arcuately connected to the third coupling arm 156 away from one end of the second coupling arm 155 and extends to the peripheral wall 219. The fifth coupling arm 158 and the sixth coupling arm 159 are both disposed on the peripheral wall 219 of the accommodating space 213. The fifth coupling arm 158 and the sixth coupling arm 159 are each in a rectangular strip shape. One ends of the fifth coupling arm 158 and the sixth coupling arm 159 are vertically connected to one end of the fourth coupling arm 157 away from the third coupling arm 156, and respectively extend in two opposite directions. In this embodiment, the fifth coupling arm 158 and the sixth coupling arm 159 have the same length and are located on the same straight line, and further form a substantially T-shaped structure together with the fourth coupling arm 157. The second coupling portion 153 is disposed on the bottom wall 217 of the accommodating space 213 as a whole. The second coupling portion 153 includes a first coupling segment 160, a second coupling segment 161, and a third coupling segment 162 that are sequentially connected. The first coupling section 160 has a substantially rectangular strip shape and is disposed on the bottom wall 217 of the accommodating space 213. One end of the first coupling section 160 is electrically connected to the third grounding point 151 and extends in a direction away from the first coupling arm 154. The second coupling section 161 has a substantially rectangular strip shape, one end of which is perpendicularly connected to one end of the first coupling section 160 away from the third grounding point 151, and is parallel to the second coupling arm 155 and close to The peripheral wall 219 of the accommodating space 213 extends in a direction. The third coupling section 162 has a substantially rectangular strip shape, one end of which is perpendicularly connected to the second coupling section 161 away from one end of the first coupling section 160, and is parallel to the first coupling section 160 and adjacent to the The direction of the first coupling portion 152 extends until it is vertically connected to the junction of the second coupling arm 155 and the third coupling arm 156. In the embodiment, the overall length of the first coupling portion 152 is greater than the overall length of the second coupling portion 153. When current is fed from the third feed point 150, the current will flow through the first coupling arm 154, the second coupling arm 155, the third coupling arm 156, the fourth coupling arm 157, and the sixth coupling. The arm 159, in turn, causes the first coupling portion 152 to receive only the signal of the fifth frequency band. In addition, the current flowing into the third feed point 150 will also flow through the first coupling arm 154, the second coupling arm 155, the third coupling arm 156, the fourth coupling arm 157, and the fifth coupling arm 158, thereby The first coupling unit 152 is caused to receive only the signal of the sixth frequency band. In this embodiment, the fifth frequency band is a medium frequency band, and the sixth frequency band is a high frequency band. The frequency ranges of the fifth frequency band and the sixth frequency band are 1805-2690 MHz. FIG. 7 is a graph of S parameters (scattering parameters) of the first antenna 11 in the antenna structure 100 described above. FIG. 8 is a graph of S parameters (scattering parameters) of the second antenna 13 in the antenna structure 100 described above. FIG. 9 is a graph of S parameters (scattering parameters) of the third antenna 15 in the antenna structure 100 described above. Obviously, as can be seen from FIG. 7 to FIG. 9 above, the antenna structure 100 has a better bandwidth and satisfies the antenna design requirements. FIG. 10 is a graph showing the radiation efficiency of the first antenna 11 in the antenna structure 100 described above. FIG. 11 is a graph showing the radiation efficiency of the second antenna 13 in the antenna structure 100 described above. FIG. 12 is a graph showing the radiation efficiency of the third antenna 15 in the antenna structure 100 described above. Obviously, it can be seen from the above FIG. 10 to FIG. 12 that when the antenna structure 100 can operate in a plurality of communication systems, both of them have better radiation efficiency and meet the design requirements of general antennas. [58] Please refer to Table 1 below for the envelope correlation coefficient (ECC) value of the antenna structure 100 operating at each frequency. Obviously, when the antenna structure 100 operates in each frequency band, it has a lower envelope correlation coefficient ECC. [59] Table 1 Envelope correlation coefficient (ECC) values of antenna structure 100 [60] Obviously, since each antenna in the antenna structure 100 is provided with a separate signal feeding point, for example, the first antenna 11 is provided with a first feeding point 110, and the second antenna 13 is provided with a second feeding. At point 130, the third antenna 15 is provided with a third feed point 150. In this way, the three antennas do not interfere with each other, and each antenna can operate in at least two frequency bands, thereby enabling the antenna structure 100 to have a wide bandwidth, which can effectively balance the long-term evolution technology upgrade version (LTE). -Advanced) Carrier Aggregation (CA) function with a lower Envelope Correlation Coefficient (ECC). Moreover, compared with the conventional antenna, the antenna structure 100 only needs to design three antennas, so that the broadband design can be achieved, so that the space of the wireless communication device 200 is not required to be occupied, and the antenna design is more flexible. . It can be understood that the second radiating portion 112 and the second antenna 13 of the first antenna 11 in the antenna structure 100 are both main antennas, so that the signals of the corresponding frequency bands can be received and transmitted, for example, The second radiating portion 112 and the second antenna 13 of the first antenna 11 can operate at least in the second frequency band (2300-2700 MHz), the third frequency band (1710-2170 MHz), and the fourth frequency band (824-894 MHz), that is, The second radiating portion 112 and the second antenna 13 of the first antenna 11 can collectively cover low, medium, and high frequencies, and have a wide bandwidth. In addition, the third antenna 15 in the antenna structure 100 is a secondary antenna, and the first radiating portion 111 of the first antenna 11 also functions as a secondary antenna for receiving signals of corresponding frequency bands, for example, The first radiating portion 111 and the third antenna 15 of the first antenna 11 can operate at least in the first frequency band (729-960 MHz), the fifth frequency band, and the sixth frequency band (1805-2690 MHz), that is, the first antenna. The first radiating portion 111 and the third antenna 15 of 11 may also collectively cover low, medium, and high frequencies, and have a wide bandwidth. The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way. In addition, those skilled in the art can make other changes in the spirit of the present invention. Of course, the changes made in accordance with the spirit of the present invention should be included in the scope of the present invention.