1353689 V * * 2011/6/23無劃線版替換頁 六、發明說明： 【發明所屬之技術領域】 • 本發明係關於一種金屬天線結構，特別是關於一種在 接地面（ground plane)具有饋入點（feed p〇int)並向曲型凹口 (curved groove)突出之倒 F 型金屬天線（rnetal inverted f antenna ; MIFA)。 【先前技術】 通訊技術由過去數十年的有線通訊進步至有效及方便 之無線通訊，而無線通訊裝置及其成果已隨處可見。天線 已經成為母個無線通訊系統中之主要建構基礎。在多數例 子t，天線並非内部系統設計之主要考量。然而，天線係 為一種使得射頻能量可於有線通訊線及空間之間轉變的單 裝置。因此，天線及電波傳遞（pr〇pagati〇n)係為影響無 •線通 5孔頻道（wireless communication channel)之穩健性及 品質的主要因素。 通常，一般螺旋型（helical)天線或直線型單極（iinear n^nopole)天線係作為可攜端之天線。螺旋型天線或直線型 單極天線具有全方向輻射之特性優點，為突出於裝置外之 形式’因此也較容易被外力所損壞。 稱為平面倒 F 型天線（pianar inverte(j ρ antenna; piFA) 之平面天線具有低剖面結構，係作為配置於行動通訊端内 之内部天線。一般平面倒F型天線（piFA)包含輻射元件、 同軸線及接地面。輻射元件透過同軸線饋入並且連接至接 地面，使達到阻抗匹配。一般平面倒F型天線（piFA)設計 必須根據輪射元件之寬度，加入輕射元件長度L及天線高 1353689 度之考量。平面倒F型天線（PIFA)具有如同方型微帶天線 (square - shaped micro — strip antenna)之功能，將輻射單元 長度減半以達到低剖面結構。再者，平面倒F型天線（piFA) 係為安裝於行動通訊端之内部天線，因此設計上更為美觀 並且可避免外力衝擊。 另外，天線之接地面在天線運作時扮演著重要角色。 使用印刷之倒F型天線的發展趨勢刺激了接地面的發展。 倒F型天線和接地面下之其本身形狀互相影響而形成電 場。只有在接地面無限大或遠大於單極本身尺寸時，其功 用如同完美的能量反射器般穩定。實際上，金屬層的尺寸 比的上單極的尺寸並當成偶極之其他部分。 、 而此為其最小化之限制。 更急需增進最小化之方法 入速率。 因為一般天線之最小化方式係基於二維結構之考量，1353689 V * * 2011/6/23 No-dash version replacement page VI. Description of the invention: [Technical field of the invention] The present invention relates to a metal antenna structure, and more particularly to a feed having a ground plane A p-type inverting antenna (MIFA) that protrudes into the curved groove and protrudes toward the curved groove. [Prior Art] Communication technology has evolved from wired communications over the past few decades to efficient and convenient wireless communications, and wireless communication devices and their results have become ubiquitous. The antenna has become the main building foundation in the parent wireless communication system. In most cases, the antenna is not a major consideration in internal system design. However, the antenna is a single device that allows RF energy to be converted between wired communication lines and space. Therefore, antenna and radio wave transmission (pr〇pagati〇n) are the main factors affecting the robustness and quality of the wireless communication channel. Generally, a general helical antenna or a linear monopole (iinear n^nopole) antenna is used as the antenna of the portable terminal. Spiral Antennas or Linear Monopole Antennas have the advantage of omnidirectional radiation, which is a form that protrudes beyond the device and is therefore more susceptible to damage by external forces. A planar antenna called a pianar inverte (j ρ antenna; piFA) has a low profile structure and is used as an internal antenna disposed in a mobile communication terminal. A general planar inverted F antenna (piFA) includes a radiating element, Coaxial axis and ground plane. The radiating element is fed through the coaxial line and connected to the ground plane to achieve impedance matching. The general planar inverted F antenna (piFA) design must be based on the width of the rotating component, the length of the light projecting element L and the antenna. Considering the height of 1353689 degrees, the planar inverted-F antenna (PIFA) has the function of a square-shaped micro-strip antenna, halving the length of the radiating element to achieve a low-profile structure. The F-type antenna (piFA) is an internal antenna mounted on the mobile communication end, so it is more beautiful in design and can avoid external impact. In addition, the ground plane of the antenna plays an important role in the operation of the antenna. The development trend of the antenna stimulates the development of the ground plane. The inverted F-type antenna and its own shape under the ground plane interact to form an electric field. When the ground plane is infinitely large or much larger than the size of the monopole itself, its function is as stable as a perfect energy reflector. In fact, the size of the metal layer is equal to the size of the upper monopole and becomes the other part of the dipole. The limitation of minimization. It is more urgent to increase the method input rate of minimization. Because the general method of minimizing the antenna is based on the consideration of two-dimensional structure.
隨著可攜式天線空間日益減少， 。亦需要考量增進使用空 發明内容】 種平面金屬天線。 種增加頻寬之F型金 本發明之一目的係在於提供一種 本發明之另一目的係在於提供一 屬天線。 種具有一饋入點 本發明之又一目的係在於提供— 4 1353689 ,.. 201丨/6/23無劃線版替換頁 向接地面内之曲型凹口中央突出之金屬天線結構。換句話 °兒曲型凹口有一開口以容納位於曲形凹口中央的饋入 點。 本發明之更一目的係在於提供一種包含輪射體之金屬 天線結構，上述輻射體包含曲形部分及矩形部份連接至接 地面’使增進金屬天線之效能。 本發明係揭露一種金屬天線結構，包含接地面、輻射 體及饋入點。上述輻射體包含曲形部分及矩形部份，藉由 曲形部分之第一端連接至接地面並且由接地面之接地點接 $ ’矩形部份連接至曲形部分之第二端。上述饋入點向内 突出於接地面内之曲形凹口之大略中央位置，並連接至輕 射體的曲形部分之第二端。其中接地面延伸至輻射體之矩 形部分。輻射體之矩形部分係與接地面平行。 上述金屬天線結構之厚度係從〇 3公釐…⑷至2公釐 (咖）。輕射體之矩形部份之長度係約為ι/4波長⑷。輕射 體之矩形部份之寬度係從1/2G至⑽波長⑷。輕射體之 曲形部份之最外圍圓之半徑係約為1/16波長⑻。上述輕 射體之曲形部份之中央中空圓之半徑係約為"Μ波細 減去轄射體之矩形部份之寬度。 上述曲形凹口之半徑大於輕射體之矩形部份之寬度。 =面，高度大於曲形凹σ之半徑。從連接至矩形部分第 端之端點至曲形凹口之長度大於轄射體之曲形部分最外 圍圓之半徑。 據下列|乂佳貫施例之詳細敘述與後附圖式，將可更 5 1353689 . < * ,,. 201丨/6/23無劃線版替換頁 快了解本發明所述之物件、特徵及優點。 【實施方式】 參考後附圖式，本發明將詳細地敘述較佳實施例。於 圖式中不同圖式中之相同或相似的元件係以相同元件符 唬表示。在以下敘述中，所包含的已知功能及結構將不再 詳述’以避免混淆本發明之主題。 第一圖係為本發明之平面倒F型金屬天線之橫向示意 圖。如第一圖所示，天線之輻射體元件係結合至接地金屬 面（ground metal plane)i〇之一端。代表天線效能之天線基 本特性包含阻抗（impedance)、電壓駐波比（v〇ltage standing wave ratio，VS WR)或駐波比（stan(jing wave ratio ; SWR)、 大小輪射場型圖（amplitude radiation patterns)、方向性 (directivity)、增益值（gain)、極化（p〇larizati〇n)及頻寬 (bandwidth) ° 為了達到有線或同軸（coaxial)傳輸線及天線之間最大 化的電力傳輸，天線之輸入阻抗與傳輸線之特性阻抗 (characteristic impedance)必須互相匹配（match)。傳輸線之 最大電壓及最小電壓之間的比例係定義為電麼駐波比 (VSWR)。電壓駐波比（VS WR)由反射及前進波之等級〇evel) 所導出，並且亦為天線端輸入阻抗與傳輸線之特性阻抗匹 配程度之指標。電壓駐波比（V S W R)增加係表示天線及傳輸 線之間的不匹配（mismatch)程度之增加。 參考第一圖’係顯示本發明之平面倒F型金屬天線之 橫向示意圖。天線結構包含一接地面1〇。一輕射體 6 1353689 2011/6/23無劃線版替換頁 (raditor)20，包含一曲形部分（cured shape p〇rti〇n)22 及一 矩形部份（rectangular P〇rti〇n)2卜輻射體20係藉由曲形部 分22之一第一端（firstend)23連接至接地面1〇，並且由接 地面10之接地點（ground p〇int)25接地。接地點25具有— 接地線，約略配置於輻射體20之邊緣。饋入點 point)30係配置於接地面1〇上之曲形凹口 32内。也就是 說，接地面10具有一朝向饋入點3〇之曲形凹口 32，以在 該凹口 32之大致中央位置容納饋入點3〇。應注意任何形 狀之凹口皆可應用。再者，饋入點3〇可作為同軸饋入 (coaxial feed)來實施。饋入點3〇的實施方式也可藉由置於 輻射體20的邊緣來達成。此外，輻射體2〇包含一曲形部 分22及-矩形部分21。饋人點3()係連接至曲形部分^ 之一第二端24。應注意接地面1〇係延伸至輻射體2〇之矩 形部分21。輕射體20之矩形部份21係與接地面1〇大致 平面輻射體於曲形部分及矩形部份之間的交界面具有 -凹口 (，e)。上述之平面金屬天線結構係適用於多於 頻率耗ϋ矩形部份21之開口端(。障叫係位於輻射 體20之矩形部份21之邊緣。 =依照所需而操作平面金屬天線，曲形部分Μ係配 置於接地面1〇及饋入點夕n她 頌點30之間’且饋入點30向内凸出於 面H)内之曲形凹口 32。矩形部份21係由曲形部分22 接：—端24延伸。接地面1〇係延伸至矩型部份2卜因此 接地面可提供一充足的平台與傳輸襄置（如基地 7 1353689 合 201丨/6/23無劃線版替換頁 ^者’當矩形部分21及曲形部分22連接至―般接地 時’可製成-完整的内部金屬天線。較佳地，饋入元 〇係垂直配置至_20,並向内凸出於接地面1〇内 =凹口 32之中央。然而，當以配置内部金屬天線之結 ^為基礎之接地情況改變時，亦可適當改變饋入元件、 2體及接地間之-些物理參數，俾使輻射元件分別轄射 =疋頻率之極化波（帅rlzedwaves)。並且，㈣元件可 以疋經過各種潤飾之有線或平面輻射元件。 上述金屬天線結構之厚度係從〇 3公复―）至2公爱 輕射體20之矩形部份21之長度係約為μ波長⑷。 /4波係表示天線長度為達到譜振之操 ===份21之寬度係從1/2。至"5。波· =體20之曲形部份22之最外圍圓之半徑係約為㈣波 ()。上仙射體20之曲形部份22之中央中空圓之半徑 糸約為1/16波長（λ)減去輕射體2〇之矩形部份2ι之寬产。 :是’本發明在此說明之個別實施例之目的’:用 以忒明本發明，並非用以限制本發明。 ，上述金屬天線結構之高度大於或等於幸昌射體2〇之矩 形部份21之寬度及輕射體之曲形部份22之中央中*圓之 半徑的總和。矩形部分21之開口端至轄射體2〇之：形部 2之中心的長度係大於矩形部份。之長度及輕射㈣ 之曲形部份22之中央中空圓之半徑的總和。上述金 結構之總長係大於輕射H 20之矩形部#21之長产及輕射 8 1353689As the space of portable antennas is decreasing, It is also necessary to consider the use of the invention. A planar metal antenna. F-type gold of increased bandwidth One of the objects of the present invention is to provide a generic antenna for providing a generic antenna. Having a feed point Another object of the present invention is to provide a metal antenna structure that protrudes from the center of the curved recess in the ground plane by providing - 4 1353689 , .. 201丨/6/23. In other words, the curved recess has an opening to accommodate the feed point in the center of the curved recess. A further object of the present invention is to provide a metal antenna structure including a projecting body including a curved portion and a rectangular portion connected to the ground to enhance the performance of the metal antenna. The invention discloses a metal antenna structure comprising a ground plane, a radiator and a feed point. The radiator includes a curved portion and a rectangular portion, and the first end of the curved portion is connected to the ground plane and the rectangular portion of the ground plane is connected to the second end of the curved portion. The feed point projects inwardly from a substantially central position of the curved recess in the ground plane and is coupled to the second end of the curved portion of the light projecting body. The ground plane extends to the rectangular portion of the radiator. The rectangular portion of the radiator is parallel to the ground plane. The thickness of the above metal antenna structure is from 〇 3 mm (4) to 2 mm (coffee). The length of the rectangular portion of the light project is approximately ι / 4 wavelength (4). The width of the rectangular portion of the light projecting body is from 1/2G to (10) wavelength (4). The radius of the outermost circle of the curved portion of the light project is about 1/16 wavelength (8). The radius of the central hollow circle of the curved portion of the above-mentioned light projecting body is about "chopping fine minus the width of the rectangular portion of the illuminating body. The radius of the curved recess is larger than the width of the rectangular portion of the light projecting body. = face, the height is larger than the radius of the curved concave σ. The length from the end point connected to the end of the rectangular portion to the curved notch is larger than the radius of the outermost circle of the curved portion of the apex. According to the following detailed description of the application example and the following figure, it will be possible to further understand the object described in the present invention by changing the page without a scribe line. Features and benefits. [Embodiment] The present invention will be described in detail with reference to the accompanying drawings. The same or similar elements in the different figures in the drawings are denoted by the same element symbols. In the following description, the known functions and structures are not described in detail to avoid obscuring the subject matter of the present invention. The first figure is a horizontal schematic view of a planar inverted F-type metal antenna of the present invention. As shown in the first figure, the radiator element of the antenna is coupled to one end of a ground metal plane i. The basic characteristics of the antenna representing the performance of the antenna include impedance, voltage standing wave ratio (VS WR) or standing wave ratio (stan (jing wave ratio; SWR), size and radiation pattern (amplitude radiation) Patterns, directivity, gain, polarization (p〇larizati〇n), and bandwidth ° To achieve maximum power transfer between wired or coaxial transmission lines and antennas, The input impedance of the antenna and the characteristic impedance of the transmission line must match each other. The ratio between the maximum voltage and the minimum voltage of the transmission line is defined as the electric standing wave ratio (VSWR). The voltage standing wave ratio (VS WR) ) derived from the level of reflection and forward wave 〇evel), and is also an indicator of the degree to which the input impedance of the antenna end matches the characteristic impedance of the transmission line. An increase in the voltage standing wave ratio (V S W R) indicates an increase in the degree of mismatch between the antenna and the transmission line. Referring to the first figure, a schematic transverse view of a planar inverted-F metal antenna of the present invention is shown. The antenna structure includes a ground plane 1〇. A light body 6 1353689 2011/6/23 unlined version of the raditor 20, including a curved shape (cured shape p〇rti〇n) 22 and a rectangular part (rectangular P〇rti〇n) The radiation body 20 is connected to the ground plane 1〇 by a first end 23 of the curved portion 22, and is grounded by a ground point 25 of the ground plane 10. The grounding point 25 has a grounding wire disposed approximately at the edge of the radiator 20. The feed point point 30 is disposed in the curved recess 32 on the ground plane 1〇. That is, the ground plane 10 has a curved recess 32 facing the feed point 3〇 to accommodate the feed point 3〇 at a substantially central position of the recess 32. It should be noted that any shape of the notch can be applied. Furthermore, the feed point 3〇 can be implemented as a coaxial feed. The embodiment of the feed point 3〇 can also be achieved by placing it on the edge of the radiator 20. Further, the radiator 2 includes a curved portion 22 and a rectangular portion 21. The feed point 3 () is connected to the second end 24 of the curved portion ^. It should be noted that the ground plane 1 is extended to the rectangular portion 21 of the radiator 2〇. The rectangular portion 21 of the light projecting body 20 has a recess (e) with the ground plane 1 〇 substantially planar radiator at the interface between the curved portion and the rectangular portion. The above planar metal antenna structure is suitable for the open end of the rectangular portion 21 which is more than the frequency consuming (the barrier is located at the edge of the rectangular portion 21 of the radiator 20) = the planar metal antenna is operated as required, curved Part of the tether is disposed on the ground plane 1〇 and the curved recess 32 between the feed point and the point 30 and the feed point 30 protrudes inwardly from the face H. The rectangular portion 21 is connected by a curved portion 22: the end 24 extends. The grounding surface 1 extends to the rectangular portion 2, so the grounding surface can provide a sufficient platform and transmission device (such as base 7 1353689 and 201丨/6/23 without scribe line replacement page ^'s when the rectangular portion 21 and the curved portion 22 is connected to the "normally grounded" - can be made - a complete internal metal antenna. Preferably, the feed element is vertically arranged to _20 and protrudes inwardly from the ground plane 1 = = The center of the notch 32. However, when the grounding condition based on the configuration of the internal metal antenna is changed, the physical parameters of the feeding element, the body and the ground can be appropriately changed, so that the radiating element is separately controlled. The polarized wave of the frequency = 疋 rl 帅 帅 帅 帅 帅 帅 帅 rl rl rl rl rl rl rl rl rl rl rl rl rl rl rl rl rl rl rl rl rl rl rl rl rl rl rl rl rl rl rl rl rl rl rl rl rl rl rl rl rl rl rl rl The length of the rectangular portion 21 of 20 is about μ wavelength (4). The /4 wave system indicates that the length of the antenna is the spectrum operation === the width of the portion 21 is from 1/2. To "5. The radius of the outermost circle of the curved portion 22 of the wave body = body 20 is approximately (four) waves (). The radius of the central hollow circle of the curved portion 22 of the upper projection 20 is about 1/16 wavelength (λ) minus the width of the rectangular portion 2 of the light emitter 2〇. The present invention is intended to be illustrative of the invention and is not intended to limit the invention. The height of the metal antenna structure is greater than or equal to the sum of the width of the rectangular portion 21 of the Xingchang projecting body 2 and the radius of the center circle of the curved portion 22 of the light projecting body. The open end of the rectangular portion 21 is to the rim 2: the length of the center of the portion 2 is greater than the rectangular portion. The sum of the lengths and the radius of the central hollow circle of the curved portion 22 of the light shot (4). The total length of the above gold structure is greater than the long-term production and light shot of the rectangular portion #21 of the light-emitting H 20 8 1353689
Of) ^ Λ Arr /6’23無劃線版替換頁 體20之曲形部份22之最外圍圓之半徑的總和。曲形凹口 32之半徑大於輻射體2〇之矩形部份21之寬度。甚者，曲 ^/凹32之直徑大於饋入點3〇之直徑，如此曲形凹口 32 即可谷納饋入點30。接地面1〇之高度大於曲形凹口 32之 半徑。從連接至曲形部份22之第一端23之端點，至曲形 凹口 32之長度大於輻射體20之曲形部份22之最外圍圓之 半徑。 第二圖係為本發明之平面倒F型金屬天線之縱向示意 圖。輻射體20可垂直放置以和傳輸裝置（如基地台）連接。 矩形部分21之位置應位於曲形部份22之上方。 第三圖係顯示金屬天線之駐波比（SWR)之示意圖。代 表天線力效之基本特性係為駐波比（SWR)。駐波比（SWR) 係由反射及前進波之等級（levd)所導出，並且亦為金屬天 線端輸入阻抗與傳輸線之特性阻抗匹配程度之指標。第三 圖中之位置4及5之相對應的頻率係分別為2 59496 GHz 及2.25823 GHz。因此，金屬天線之頻寬可大於34〇 MHz， 金屬天線之效能十分良好。 此外，考慮到短距無線傳輸裝置之輸出動力及接收敏 感度之標準值，倒F型金屬天線之多方向性能具有確實滿 足一般室内環境所需性能之增益值。 參考第四圖至第六圖，係根據本發明之實施例分別顯 示2.4、2_45及2.5〇112共振頻率（1^〇仙加忏叫1^11(^)下之 金屬天線輻射場型圖（radiation pattern)。第四圖係顯示H 平面㈣場型® ’並且㈣度州度時其增益值約為3.8〇 9 13^3689 rl"Ri·，二# τ 2011/6/23無劃線版替換頁 而其平均增益值為0.57 dBi。第五圖係顯示Η平面輻 射場型圖，並且於角度345度時其增益值約為4 〇2廿別， 而其平均增盈值為〇 8丨dBi。第六圖係顯示Η平面輻射場 尘圖’並且於角度339度時其增益值約為3.96 dBi，而其 平均増盃值為0.75 dBi。根據本發明之利用矩形與曲形輻 射元件所wf·及製造的金屬天線之輕射場型圖的量測結 果’發現可得到超過〇 dBi之良好增益值。本發明實施例 之金屬天線輜射場型圖具有相當進步之接收效能。 、、^發明之優點是提供一兼具接收縱向及橫向之極化電 、、、I力之倒F型金屬天線，其可被證明利於在對極化敏 感的室内環境令使用。 、本發明所述之平面隹j F型金屬天線可視為一種以平面 取代有線転射元件以增加頻寬之線性倒F型金屬天線。平 =倒F型金屬天線之第—項優點是，相較於伸縮式/棒狀/ 轰疋里天線’其可隱匿在手機内。第二項優點是，可降低 :回至使用者頭部之反向輻射量，降低所吸收之電磁波 AR) ’並增進天線之效能。第三項優點是，在水平及垂 ^之極化情況下皆有適度之高增益。在某些天線方向不固 北a ^射波在各方位出現之無線通訊環境中，這種特徵是 二用。在那些例子中，水平和垂直極化向量和是應考 慮的重要參數。 ^發明以較佳實施例說明如上，然其並非用以限定本 之專利權利範圍。其專利保護範圍當視後附之 I巳圍及其等同領域而定。凡熟悉此領域之技藝Of) ^ Λ Arr / 6'23 without scribe line replacement page The sum of the radii of the outermost circles of the curved portion 22 of the body 20. The radius of the curved recess 32 is larger than the width of the rectangular portion 21 of the radiator 2〇. Moreover, the diameter of the curved/concave 32 is larger than the diameter of the feed point 3〇, so that the curved recess 32 can feed the point 30. The height of the ground plane 1〇 is greater than the radius of the curved recess 32. From the end of the first end 23 connected to the curved portion 22, the length of the curved recess 32 is greater than the radius of the outermost circumference of the curved portion 22 of the radiator 20. The second figure is a longitudinal schematic view of a planar inverted-F metal antenna of the present invention. The radiator 20 can be placed vertically for connection to a transport device such as a base station. The position of the rectangular portion 21 should be located above the curved portion 22. The third figure shows a schematic diagram of the standing wave ratio (SWR) of the metal antenna. The basic characteristic of representative antenna power is the standing wave ratio (SWR). The standing wave ratio (SWR) is derived from the level of reflection and forward wave (levd) and is also an indicator of the degree of impedance matching between the input impedance of the metal antenna and the characteristic impedance of the transmission line. The corresponding frequencies at positions 4 and 5 in the third figure are 2 59496 GHz and 2.25823 GHz, respectively. Therefore, the metal antenna can have a bandwidth greater than 34 〇 MHz, and the performance of the metal antenna is very good. In addition, considering the output power of the short-range wireless transmission device and the standard value of the reception sensitivity, the multi-directional performance of the inverted-F metal antenna has a gain value that satisfies the performance required for the general indoor environment. Referring to the fourth to sixth figures, the radiation patterns of the metal antennas under the resonance frequencies of 2.4, 2_45, and 2.5〇112 are respectively displayed according to an embodiment of the present invention (1^〇仙加忏1^11(^) Radiation pattern). The fourth figure shows the H-plane (four) field type ® ' and (four) degree state its gain value is about 3.8〇9 13^3689 rl"Ri·,二# τ 2011/6/23 no-dash version Replace the page with an average gain of 0.57 dBi. The fifth graph shows the 辐射 plane radiation pattern, and its gain value is about 4 〇 2 at an angle of 345 degrees, and its average gain is 〇8丨. dBi. The sixth figure shows the Η plane radiation field dust pattern' and its gain value is about 3.96 dBi at an angle of 339 degrees, and its average cup value is 0.75 dBi. According to the present invention, rectangular and curved radiating elements are used. The measurement result of the light field pattern of the metal antenna manufactured by wf· and found that a good gain value exceeding 〇dBi can be obtained. The metal antenna field pattern of the embodiment of the present invention has a fairly improved receiving performance. The advantage is that it provides a polarized electricity that receives both vertical and horizontal directions, and F-type metal antenna, which can be proved to be advantageous for use in a polarization-sensitive indoor environment. The planar Fj F-type metal antenna of the present invention can be regarded as a plane replacing a wire-emitting element to increase the linearity of the bandwidth. Inverted F-type metal antenna. The first advantage of the flat-inverted F-type metal antenna is that it can be concealed in the mobile phone compared to the telescopic/rod/boom antenna. The second advantage is that it can be reduced: Returning the amount of reverse radiation to the user's head, reducing the absorbed electromagnetic wave AR) 'and improving the performance of the antenna. The third advantage is that there is a moderately high gain in both horizontal and vertical polarization. In some wireless antennas where the direction of the antenna is not fixed, the north a ^ wave appears in the wireless communication environment. In those examples, the sum of horizontal and vertical polarization vectors is an important parameter to consider. The invention is described above by way of a preferred embodiment, which is not intended to limit the scope of the patent. The scope of patent protection is subject to the scope of the attached I and its equivalent. Familiar with the skills of this field
2〇1職3無劃線版替換頁 ，所作之更動或潤飾， 之等效改變或設計，且 者，在不脫離本專利精神或範圍内 均屬於本發明所揭示精神下所完成 應包含在下述之申請專利範圍内。 【圖式簡單說明】 根據下列較佳實施例之詳細敘述與後附圖式，將可更 快了解本發明料之物件、特徵及優點。 第一圖係為本發明之平面倒F型金屬天線之橫向示意 第一圖係為本發明之平面倒F型金屬天線之縱向示意 第二圖係為根據本發明 第四圖係為根據本發明 場型圖（radiati〇n pattern)。 之駐波比（SWR)之示意圖。 之2.4 GHz共振頻率下之輻射 第五圖係為根據本發明之2 45 GHz共振頻 射場型圖。 下之輻 第 場型圖 八圖係為根據本發明之2.5 GHz共振頻率下之輻射 【主要元件符號說明】 10 · ·.接地面 20 · 21 · 23 · •輻射體 .矩形邹份 .曲形邹分 •第一端 .第二端 24 1353689 2011/6/23無劃線版替換頁 25 ·. 30 ·. 32 ·. •接地點 .饋入點 •曲形凹口 122〇1职3 has no stenciled replacement page, the modification or retouching, the equivalent change or design, and the spirit of the present invention shall be included in the spirit of the disclosure. Within the scope of the patent application. BRIEF DESCRIPTION OF THE DRAWINGS Objects, features, and advantages of the present invention will be more readily understood from the following detailed description of the preferred embodiments. The first figure is a horizontal schematic view of a planar inverted-F metal antenna of the present invention. The first diagram is a longitudinal schematic diagram of a planar inverted-F metal antenna of the present invention. The second diagram is based on the fourth aspect of the present invention. Field pattern (radiati〇n pattern). Schematic diagram of the standing wave ratio (SWR). Radiation at a resonant frequency of 2.4 GHz The fifth figure is a 2 45 GHz resonant frequency field pattern according to the present invention. The following figure is a radiation at a resonance frequency of 2.5 GHz according to the present invention. [Main component symbol description] 10 · ·. Ground plane 20 · 21 · 23 · • Radiator. Rectangular Zou. Curved Zou Di • First End. Second End 24 1353689 2011/6/23 No Line Replacement Page 25 ·. 30 ·. 32 ·. • Ground Point. Feed Point • Curved Notch 12