1293515 九、發明說明： ·*· 【發明所屬之技術領域】 本發明係關於一種天線，特別係關於一種可增加天線 的操作頻帶寬度，俾使其可應用於較多國家或地區頻帶之 +面偶極天線。 【先前技術】 _ 無線傳輸的蓬勃發展帶來各種不同應用於多頻傳輸 的產品與技術，以致於許多新產品具有甩無線傳輸的性 月b ’以便滿足消費者之需求。而天線，是在無線傳輸系統 中用來發射與接收電磁波能量的重要元件，若是沒有了天 線，則無線傳輸系統將會無法發射與接收資料。 因此，天線的角色在無線傳輸來說，是不可或缺的一 環。選用適當的天線除了有助於搭配産品的外型以及提升 傳輸特性外，還可以更進一步降低產品成本。由於目前在 • 各種不同的應用産品中，所使用的天線設計方法與製作材 質也不盡相同’另外’針對每二個國家對所需要的使用頻 1 帶不同’在設計天線時亦要相當的考量，目前較通用的對 .於頻帶的規範有1EEE 802.11、以及目前最熱門的藍牙通訊 (802· 15.1)等等，其中藍牙工作於2.4GHz頻帶，802.11又 分為802.11a以及802.11b分別是針對5GHz頻帶以及 2.4GHz頻帶作定義。 習知的一種雙頻雙偶極天線，如圖丨所示，係包括兩 矩形之輻射金屬片11及12與一同軸傳輸線13。輻射金屬 1293515 ，片11及12具有相對應的饋入點111及121與倒L形狹縫 :112及122，饋入點111及121係分別與同軸傳輸線13電 一 連接。倒L形狹縫112及122係將矩形輻射金屬片11及 12區隔為一高頻模態及一低頻模態，高頻模態係涵蓋 5.15GHz至5.35GHz，而低頻模態係涵蓋2.4GHz至 2.484GHz 〇 然而，每個國家都有不同的開放的頻帶，尤其是IEEE 802.11a，其組件必須適應不同的頻帶範圍，例如在歐洲便 * 需要以高頻帶（5.47〜5.725GHz)支持1W的輸出，才能使 用歐洲的所有頻道。 承上所述，習知的偶極天線，其頻帶寬度只能涵蓋某 一部份的範圍，因此在不同的國家對頻帶的需求下會對產 品的使用範圍有所限制，使得偶極天線之應用產品無法應 用在每個不同的國家區域。 因此，如何增加偶極天線的操作頻帶寬度，俾使偶極 φ 天線之應用產品能符合更多國家區域的需求，實屬當前偶 極天線之重要課題之一。 【發明内容】 有鑑於上述課題，本發明之目的為提供一種能增加操 作頻帶寬度且可同時應用於兩個不同頻帶之平面偶極天 線。 緣是，為達上述目的，依本發明之平面偶極天線，其 係包括一第一輻射體、一第二輻射體及一導電元件。第一 1293515 ::體係具有至少兩第一頻率輻射部 第-長度二接部，其中第-頻率輕射部具有-二長度與二第外，第二頻率輻射部具有-第 係由第-電性工：「頻率輕射部及第二頻率輕射部 罢^ 楼°卩之一側延設，且第二頻率軒鈕却 置於兩第一頻率輻射部之間； r田、。糸权 第-頻率輻射部、至少：…糸具有至少兩 連接部，n一一-弟率輻射部、及一第二電性 ^ 1射部具有—第一長度與一第-寬产， 弟一頻率輻射部具有—第 ς 輕射部及第二頻率輻射心三/ —寬度4 一頻率 手^射部係於第一輻射體之延設方向之 自第二電性連接部之—側延設，且第二頻率 二曾㈣❹於兩第—頻率輻射部之間；導電元件係具有 一¥電體及-接地導體，導電體及接地導體係分別 電性連接部及第二輕連接部電祕，其找第-長度係 W第—長度之—倍至三倍之間，該第二寬度係大於等 於該第一寬度之兩倍。 · 承上所述，因依本發明之于面偶極天線係利用第一頻 率輻射部及第二頻率輻射部：以達到雙頻的效果，且依照 第一輻射體及第二輻射體的構造及設置位置，以達到寬頻 的效果，因此可增加所涵蓋的頻帶範圍使得應用產品可使 用於更多的國家。 【實施方式】 以下將參照相關圖式，說明依本發明較佳實施例之平 1293515 '面偶極天線，其中相同的元件將以相同的參照符號加以說 明。 請參照圖2所示’依本發明較佳實施例之平面偶極天 線3，包括一第一輻射體31、一第二輻射體32及一導電 元件33。 第-輻射體31係具有至少兩第一頻率轄射部3ιι、至 少兩第二頻率迪部312、及—第―電性連接部313，在 本實施例中’第-頻率輻射部311及第二頻率輻射部312 係呈矩形之形狀。 第-頻率輕射部311具有一第一長度如鱼一第一寬 度=二:Γ射部312具有一第二長度似與-第 二：：其中，第一寬度dl2係介於第二寬度d22的 第一長度dll的三分之一至 第一頻率輻射部31〗及第二頻率 :性連接部313之一側延設，;° =身 置於第一頻率輻射部31]之間：頻革^射部312裔 ^第二輻射體32係具有與第一#射辦h j 第—頻率輻射部3n、 田、—相同之至少 第二電性逹接部323 頻率輕射部312、及 及第二頻率轄射部312二T列中’第-頻率輻射部3】 射部3〗〗及第二頻率’=、-輻射體31之第一頻率車 二輻射體32之第一“P 312同係呈矩形之形狀。 第步貝羊輪射部川亦具有第-長度 係三之間’在本實施例中，第-寬度仍 係弟-見度似的二分之―，另外，第二 之間 1293515 、與第'一寬度dl2，且第二輻射體32之第二頻率輻射部312 - 亦具有第二長度d21與第二寬度d22。 . 在本實施例中，第二輻射體之第一頻率輻射部311及 第二頻率輻射部312係於第一輻射體31之延設方向之反 方向上，而自第二電性連接部323 —侧延設，且第二頻率 輻射部312係設置於第一頻率輻射部311之間。 導電元件33係具有一導電體331及一接地導體332， 導電體331及接地導體332係分別與第一電性連接部313 > 及第二電性連接部323電連接，在本實施例中，導電體331 係與第一電性連接部313電連接，接地導體332係與第二 電性連接部323電連接，另外，導電體331亦可與第二電 性連接部323電連接，接地導體332係與第一電性連接部 313電連接，另外，於本實施例中，導電元件33係可為一 同軸傳輸線，其中，導電體331係相當於同軸傳輸線之中 心導線，而接地導體332係相當於同軸傳輸線之接地導 | 體。然而，導電元件33與第一輻射體31及第二輻射體32 之連接方式，係可依所應用之產品形狀而改變，只需依據 導電體331及接地導體332係分別與第一電性連接部313 及第二電性連接部323電連接之原則即可。 另外，在本實施例中，第一電性連接部313更包含一 第一饋入點41，而第二電性連接部323更包含一第二饋入 點42，導電元件33之導電體331及中心導體332係分別 與第一饋入點41及第二饋入點42電連接。 在本實施例中，平面偶極天線3之第一輻射體31及 1293515 ，弟一輕射體32係可如圖3所示，係可以金屬薄片製作， 、 亦可利用印刷或是蝕刻技術設置於一介質基板40上，介 _ 質基板40之材質係可為Bismaleimide-triazine，BT樹脂或 玻璃纖維強化環氧樹脂（Fiberglass reinforced epoxy resin，FR4 )製成之印刷電路板，亦可為以聚醯亞胺 (Polyimide )製成之可撓性薄片基板（Flexible film substrate) ’甚至可整合於電路的一部份，以減少所佔據的 空間。另外，亦可設置於一殼體上（圖中未顯示），其係 ® 可利用蒸鍍（Evaporation deposition)或其他技術設置於 平面偶極天線3所應用之產品之殼體表面。 另外，請參照圖4所示，其中，縱軸表示電壓靜態駐 波比（VSWR )，橫軸代表頻率（Frequency )。依照電壓靜 態駐波比小於1.5的定義下，在本實施例中，第一頻率輻 射部311係於頻率2.4GHz至2.5GHz之間操作，而第二頻 率輻射部312係於頻率4.9GHz至6GHz之間操作，然而， φ 一般而言，大多數對於電壓靜態駐波比可接受的定義約為 2，因此，若以電壓靜態駐波比小於2的定義，則本實施 1 * ^ ，例之平面偶極天線3係可操作於更大的頻帶範圍。 綜上戶斤述，因本發明之平面偶極天線係利用第一頻率 輻射部及第>頻率輻射部，以達到雙頻的效果，且依照第 一輻射體及第二輻射體的構造及設置位置，以達到寬頻的 效果，因此β增加所涵蓋的頻帶範圍，以成為一寬頻天 線，使得本發明平面偶極天線之應用產品可使用於更多的 國家或地麁。 1293515 、以上所述僅為舉例性，而非為限制性者。任何未脫離 - 本發明之精神與範疇，而對其進行之等效修改或變更，均 - 應包含於後附之申請專利範圍中。 【圖式簡單說明】 圖1為顯示習知偶極天線之示意圖； 圖2為顯示依本發明較佳實施例之平面偶極天線之示 意圖， > 圖3為顯示依本發明較佳實施例之設置於介質基板上 之平面偶極天線之示意圖；以及 圖4為顯示依本發明較佳實施例之平面偶極天線之使 用頻帶範圍之量測圖。 元件符號說明： 11 > 12 韓射金屬片 111 ^ 121 饋入點 112 、 122 倒L形狹縫 13 同軸傳輸線 3 平面偶極天線 31 第一輻射體 311 第一頻率輻射部 312 第二頻率輻射部 313 第一電性連接部 32 第二輻射體 12 第二電性連接部 導電元件 導電體 接地導體 介質基板 第一饋入點 第二饋入點 第一長度 第一寬度 第二長度 第二寬度 131293515 IX. Description of the invention: ·*· [Technical field to which the invention pertains] The present invention relates to an antenna, and more particularly to an operation that can increase the operating bandwidth of an antenna so that it can be applied to + or more frequency bands of a country or region. Dipole antenna. [Prior Art] _ The rapid development of wireless transmission brings a variety of products and technologies for multi-frequency transmission, so that many new products have a wireless transmission performance to meet the needs of consumers. The antenna is an important component used to transmit and receive electromagnetic energy in a wireless transmission system. If there is no antenna, the wireless transmission system will not be able to transmit and receive data. Therefore, the role of the antenna is an indispensable part of wireless transmission. In addition to helping to match the appearance of the product and improving the transmission characteristics, the selection of an appropriate antenna can further reduce the cost of the product. Because the antenna design method and the material used in the various applications are different, 'other' is different for each of the two countries. It is also different when designing the antenna. Considering the current general-purpose pair, the specifications of the frequency band are 1EEE 802.11, and the most popular Bluetooth communication (802·15.1), etc., in which Bluetooth operates in the 2.4GHz band, and 802.11 is divided into 802.11a and 802.11b respectively. The definition is for the 5 GHz band and the 2.4 GHz band. A dual-frequency dual dipole antenna, as shown in the figure, comprises two rectangular radiating metal sheets 11 and 12 and a coaxial transmission line 13. Radiation metal 1293515, sheets 11 and 12 have corresponding feed points 111 and 121 and inverted L-shaped slits: 112 and 122, and feed points 111 and 121 are electrically connected to coaxial transmission line 13, respectively. The inverted L-shaped slits 112 and 122 partition the rectangular radiating metal sheets 11 and 12 into a high frequency mode and a low frequency mode, the high frequency mode covers 5.15 GHz to 5.35 GHz, and the low frequency mode covers 2.4 GHz to 2.484 GHz. However, each country has a different open frequency band, especially IEEE 802.11a, and its components must adapt to different frequency bands. For example, in Europe, it is necessary to support 1W output in the high frequency band (5.47~5.725GHz). Use all channels in Europe. As mentioned above, the conventional dipole antenna can only cover a certain range of bandwidth. Therefore, the demand for the frequency band in different countries limits the range of use of the product, so that the dipole antenna Applications cannot be applied in every different country area. Therefore, how to increase the operating bandwidth of the dipole antenna and make the application of the dipole φ antenna meet the needs of more countries and regions is one of the important topics of the current dipole antenna. SUMMARY OF THE INVENTION In view of the above problems, it is an object of the present invention to provide a planar dipole antenna that can increase the operating bandwidth and can be applied to two different frequency bands simultaneously. In order to achieve the above object, a planar dipole antenna according to the present invention comprises a first radiator, a second radiator and a conductive member. The first 1293515: system has at least two first frequency radiating portions of the first length of the second portion, wherein the first-frequency light-emitting portion has - two lengths and two outer portions, and the second frequency radiating portion has - the first system is from the first Sex work: "The frequency light-emitting part and the second-frequency light-emitting part are located on one side of the building, and the second frequency is placed between the two first-frequency radiation parts; r Tian, . The first-frequency radiating portion, at least: ... has at least two connecting portions, the n-th-thirteen-radiation portion, and a second electrical-emitting portion have a first length and a first-wide yield, and a frequency The radiating portion has a first light-emitting portion and a second frequency radiating core three--width 4, and the frequency-handling portion is extended from the side of the second electrical connecting portion in the extending direction of the first radiating body, And the second frequency is (four) between the two first-frequency radiating portions; the conductive element has a power body and a grounding conductor, and the electrical and grounding conductors respectively have an electrical connection portion and a second light connection portion. It finds between - times and three times the length-length of the first length system W, and the second width is greater than or equal to the first width According to the above, the surface dipole antenna according to the present invention utilizes the first frequency radiating portion and the second frequency radiating portion to achieve the effect of dual frequency, and according to the first radiator and the second radiation. The structure of the body and the position of the body to achieve the effect of wide frequency, so that the range of the frequency band covered can be increased so that the application product can be used in more countries. [Embodiment] Hereinafter, a preferred embodiment according to the present invention will be described with reference to the related drawings. For example, the same elements will be described with the same reference symbols. Please refer to FIG. 2 for a planar dipole antenna 3 according to a preferred embodiment of the present invention, including a first radiator. 31. A second radiator 32 and a conductive element 33. The first radiator 31 has at least two first frequency modulating portions 3 ιι, at least two second frequency DD portions 312, and a first electrical connection portion 313. In the present embodiment, the 'first-frequency radiating portion 311 and the second frequency radiating portion 312 have a rectangular shape. The first-frequency light-emitting portion 311 has a first length such as a fish-first width=two: the radiating portion 312 Has a second length like - second:: wherein the first width dl2 is one third of the first length dll of the second width d22 to the first frequency radiating portion 31 and the second frequency: one side of the sexual connecting portion 313 , ° = between the first frequency radiation portion 31]: the frequency of the radiation portion 312, the second radiator 32 has the same as the first #射办 hj first-frequency radiation portion 3n, Tian, At least the second electrical splicing portion 323, the frequency light-emitting portion 312, and the second frequency modulating portion 312, in the second and second columns, the 'first-frequency radiating portion 3', the third portion, and the second frequency '=, - The first "P 312 of the first frequency of the radiator 32 of the radiator 31 has a rectangular shape. The first step of the Bayer's round shot is also between the first and the third lengths 'in this embodiment, the first-width is still the younger-likeness--two points, and the second between 1293515 and the first' A width dl2, and the second frequency radiating portion 312- of the second radiator 32 also has a second length d21 and a second width d22. In this embodiment, the first frequency radiating portion 311 and the second frequency radiating portion 312 of the second radiator are in the opposite direction of the extending direction of the first radiator 31, and from the second electrical connecting portion 323. The second frequency radiating portion 312 is disposed between the first frequency radiating portions 311. The conductive element 33 has a conductor 331 and a ground conductor 332. The conductor 331 and the ground conductor 332 are electrically connected to the first electrical connection portion 313 > and the second electrical connection portion 323, respectively, in this embodiment. The electric conductor 331 is electrically connected to the first electrical connection portion 313, and the ground conductor 332 is electrically connected to the second electrical connection portion 323. The electric conductor 331 can also be electrically connected to the second electrical connection portion 323 and grounded. The conductor 332 is electrically connected to the first electrical connection portion 313. In addition, in the embodiment, the conductive element 33 can be a coaxial transmission line, wherein the conductor 331 is equivalent to the center conductor of the coaxial transmission line, and the ground conductor 332 It is equivalent to the grounding conductor of the coaxial transmission line. However, the manner of connecting the conductive element 33 to the first radiator 31 and the second radiator 32 may be changed according to the shape of the product to be applied, and only the first electrical connection is required according to the conductor 331 and the ground conductor 332. The principle that the portion 313 and the second electrical connection portion 323 are electrically connected may be used. In addition, in the embodiment, the first electrical connection portion 313 further includes a first feed point 41, and the second electrical connection portion 323 further includes a second feed point 42 and the electrical conductor 331 of the conductive element 33. And the center conductor 332 is electrically connected to the first feed point 41 and the second feed point 42 respectively. In this embodiment, the first radiator 31 and 1293515 of the planar dipole antenna 3, and the light emitter 32 can be made of a metal foil as shown in FIG. 3, or can be set by using printing or etching techniques. On a dielectric substrate 40, the material of the dielectric substrate 40 may be a printed circuit board made of Bismaleimide-triazine, BT resin or Fiberglass reinforced epoxy resin (FR4), or may be aggregated. The flexible film substrate made of Polyimide can even be integrated into a part of the circuit to reduce the space occupied. Alternatively, it may be disposed on a casing (not shown) which may be disposed on the surface of the casing of the product to which the planar dipole antenna 3 is applied by evaporation deposition or other techniques. In addition, please refer to FIG. 4, in which the vertical axis represents the voltage static standing wave ratio (VSWR) and the horizontal axis represents the frequency (Frequency). According to the definition that the voltage static standing wave ratio is less than 1.5, in the present embodiment, the first frequency radiating portion 311 operates between frequencies of 2.4 GHz to 2.5 GHz, and the second frequency radiating portion 312 is tied to frequencies of 4.9 GHz to 6 GHz. Operation between, however, φ In general, most of the acceptable definitions for voltage static standing wave ratio is about 2, therefore, if the voltage static standing wave ratio is less than 2, then this implementation 1 * ^, for example The planar dipole antenna 3 is operable over a larger frequency band. As described above, the planar dipole antenna of the present invention utilizes the first frequency radiating portion and the > frequency radiating portion to achieve the effect of dual frequency, and according to the structure of the first radiator and the second radiator. The position is set to achieve the effect of wide frequency, so β increases the frequency band range covered to become a broadband antenna, so that the application product of the planar dipole antenna of the present invention can be used for more countries or regions. 1293515 The above description is for illustrative purposes only and is not a limitation. Any equivalent modifications or alterations of the spirit and scope of the present invention are intended to be included in the scope of the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing a conventional dipole antenna; FIG. 2 is a schematic view showing a planar dipole antenna according to a preferred embodiment of the present invention, and FIG. 3 is a view showing a preferred embodiment of the present invention. A schematic diagram of a planar dipole antenna disposed on a dielectric substrate; and FIG. 4 is a measurement diagram showing a frequency band of use of a planar dipole antenna in accordance with a preferred embodiment of the present invention. Description of component symbols: 11 > 12 Hanzo metal plate 111 ^ 121 Feeding point 112, 122 Inverted L-shaped slit 13 Coaxial transmission line 3 Planar dipole antenna 31 First radiator 311 First frequency radiating portion 312 Second frequency radiation Portion 313 first electrical connection portion 32 second radiator 12 second electrical connection portion conductive element conductor ground conductor dielectric substrate first feed point second feed point first length first width second length second width 13