201019528 九、發明說明： 【發明所屬之技術領域】 本發明係關於一種内藏式耦合槊寬頻天線，特別是適 合應用在無線通訊產品上的内藏式寬頻天線。 【先前技術】 隨著無線通訊的發展，無線網路的應用越來越廣泛， 因此天線的性能便成為影響產品價值的重要關鍵之一。目 則習用於無線通訊產品的天線大都僅能雙頻或多頻操作於 單一網路，例如無線區域網路（WLAN )，相關之先前技 術包括台灣新型專利公告第562,26〇號“多頻印刷式單極天 線”，其揭示一種利用筆記型電腦液晶螢幕内建的接地面 ’在該接地面上設計天線的例子，不過該天線雖適用於 2.4 01^(2.4〜2.484 0112)、5 01^〔包含5.2 0出(5.15〜5.35〇1^) ❺及5.8 GHz (5.725~5.875 GHz)〕雙頻帶操作之無線區域網路系 統，但其低頻頻寬僅勉強包含2.4 GHz之頻帶，使得天線量 產時製作可允許誤差低’同時該天線設計缺乏全球微波存 取互通（WiMAX)網路之通訊功能，因而無法達成雙網之 操作。為解決此一問題，我們提出一種内藏式耦合型寬頻 天線的創新設計，本發明天線可以產生一低頻共振頻帶與 南頻共振頻帶並結合出一約4 GHz之寬頻操作頻寬，輕 易地涵蓋目前無線區域網路（WLAN )所需之2.4GHz頻帶 (2.4〜2.484GHz )及 5GHz 頻帶〔包含5.2GHz頻帶（515 〜5.35 GHz )及5.8 GHz頻帶（5.725〜5.875 GHz )〕之操作需求 201019528 ’同時亦滿足全球微波存取互通網路（WiMAX)所需之 2.5〇出頻帶（2.5~2.69(}11〇、35(^頻帶（33〜38=) 及5GHz頻帶（5.25~5.85GHz )之操作需求，且本發=天 線使用一耦合式機制，兼具縮小化之優點，適合内藏應用 在無線通訊產品上，達成縮小化且寬頻操作之通訊功能。 Ο ❹ 【發明内容】 如上所述，本發明之目的在於提供一種内藏式轉合型 寬頻天線的創新設計，而本發明天線之一實施例，可以產 生一低頻共振頻帶與一高頻共振頻帶並結合出一約 之寬頻操作頻寬’輕易地涵蓋目前無線區域網路所需之 24GHz及5GHz頻帶之操作需求，同時亦滿足全球微波存 取互通網路所需之2.5GHz、35咖及5服頻帶之操作需 求，且本發明天線使用一輕合式機制，兼具縮小化之優點 ，適合内藏應用在無線通訊產品上，達成縮小化且寬頻操 作之通訊功能。本發明天線包含：一接地面具有一上方 邊緣，而在該接地面之上方邊緣處具有一接地點及一短路 $ ; -輻射部，大致位於該接地面之上方邊緣處，包含： 第-子金屬部，具有—侧邊靠近於該接地面之上方邊緣 處’且在該側邊上具有一饋入點；一第二子金屬部，靠近 該第一子金屬部而不相連接；一搞合間隙，介於該第一子 金屬部與該第二子金屬部之間，而該間隙之最小寬度小於 5軸；及-短路金屬部’具有_起始端與一末端而該起 始端連接至該第二子金屬部同時該末端連接至該接地面 .201019528 之短路點；及-饋入傳輸線，用以傳輸訊號，包含： 心導線，連接至該第-子金屬部之饋人點；及―外 導體，連接至該接地面之接地點；同時該輕射部由^ 蝕刻技術形成於一介質基板上。 / 在本項設計中，我們可以藉由適當地調整該第一子金 屬部之長度與寬度（總和一般大於8mm)，產生—高頻丘 振頻帶；而藉由適當地調整該第二子金屬部之長度盘寬产 (總和-般大於12聰）及該短路金屬部之長度與寬度（ς 和-般大於6mm) ’產生一低頻共振頻帶；再適當地調整 該第一子金屬部之饋入點與該接地面之距離（―般小於3 mm)，並適當地調整該第一子金屬部與該第二子金屬 耦合間隙之寬度（一般小於5mm)，可以得到良好之阻抗 f配，且結合該低頻共振頻帶與該高頻共振頻帶進而師 -約4GHz之寬頻操作頻寬，輕易地涵蓋目前無線區：網 路，需之2.4GHz頻帶及5GHz頻帶之操作需求，亦滿足全 球微波存取互通網路所需之25GHz頻帶、35GHz頻帶及5 GHaZ頻帶之操作需求，而本發明天線使用一搞合式機制， 即是該第一子金屬部除了用以產生一高頻共振頻帶同時 藉，該耦合間隙將能量轉合至該第二子金屬部與該短路金 P用以產生一低頻共振頻帶，如此共用一子金屬部而 使得高頻與低頻共振頻帶均能被激發，讓原本需以相異之 屬卩產生共振頻帶而必須增加天線整體尺寸之缺點獲得 σ因而兼具縮小化之優點，適合内藏應用在並線通1 產品上’達成縮小化且寬頻操作之通訊功I ^通訊 9 201019528 、 【實施方式】 參考第1圖，本發明之一種内藏式耦合型寬頻天線一 實施例1包括：一接地面13，具有一上方邊緣131 ,而在 該接地面之上方邊緣131處具有一接地點132及一短路點 133 ; —輻射部14，大致位於該接地面之上方邊緣處131 ，包含·一第一子金屬部15，具有一側邊151靠近於該接 地面之上方邊緣131處，且在該側邊上151具有一饋入點 ❹ I52 ; 一第二子金屬部π，靠近該第一子金屬部15而不相 連接；一耦合間隙d，介於該第一子金屬部15與該第二子 金屬部16之間，而該間隙d之最小寬度小於5mm;及一短 路金屬部17，具有一起始端171與一末端172，而該起始 知171連接至該第二子金屬部16，同時該末端172連接至 該接地面之短路點133 ;及一饋入傳輸線18，用以傳輸訊 號，包含：-中心導線181，連接至該第一子金屬部之饋 人點152 ;及-外層接地導體182，連接至該接地面之接 髎地點132。在本實施例！中，該第一子金屬部如以產生 一高頻共振頻帶22，而該第一子金屬部15藉由該耦合間隙 d將能1耦合至該第二子金屬部16與該短路金屬部口，用 以產生一低頻共振頻帶21 ;同時該輻射部14由印刷或蝕刻 技術形成於-介質基板19上；由以上配置方式可以得到良 好之阻抗匹配，而結合該低頻共振頻帶21與該高頻丘振^ 帶22可獲得一約4GHz之寬頻操作頻寬，輕易地涵蓋目 無線區域網路所需之2.4舰及5GHz頻帶之操作需求，= 時亦滿足全球微波存取互通網路所需之2.5 GHz、3.5 GHz及 201019528 5GHz頻帶之操作需求，且本發明天線使用-麵合式機制 ，兼具縮小化之優點’適用於無線通訊產品上，達成縮小 化且寬頻操作之通訊功能。 © ❹ 第2圖為本發明天線一實施例1的返回損失實驗量測 結果；在實施例1巾，我們選擇該接地面13之長度為3〇〇 mm、寬度為260mm ;該輻射部14之長度為23mm、寬度 為8胃；該第一子金屬部b之長度為8mm、寬度為6.5mm ，而該饋入點152與該接地面之上方邊緣131之距離為 1.5mm ;該第二子金屬部16之長度為65_、寬度為&巧 mm ;該短路金屬部17之長度為8mm、寬度為81^;而該 第一子金屬部15與該第二子金屬部16之間隙寬度d為〇5 mm ;該饋入傳輸線18為一同軸傳輸線；該介質基板”為 一厚度為0.4 mm之玻璃纖維基板(FR4)。由所得實驗結果， 在返回損失小於l〇dB的定義下，其可產生一低頻共振頻 帶21與一高頻共振頻帶22進而合成一約4GHz之寬頻操作 頻寬’輕易地涵蓋目前無線區域網路所需之2 4 GHz及5 GHz頻帶之操作需求’同時亦滿足全球微波存取互通網路 所需之2.5 GHz、3.5 GHz及5 GHz頻帶之操作需求。而本發 明天線一實施例1於寬頻操作頻帶内之天線增益約為16〜 4.3dBi ’滿足無線區域網路與全球微波存取互通網路系統 之操作需求。 第3圖為本發明天線一實施例1在χ_Ζ 、y_z平面（ 垂直面）及x-y平面（水平面；假設地面平行於x_y平面 )於2500 MHz的天線輻射場型量測結果；第4圖為本發明 11 201019528 天線一實施例1在X_z 、y_Z平面（垂直面）及x_y平面 (水平面；假設地面平行於X_y平面）於35〇〇 MHz的天線 輻射％型1測結果；第5圖為本發明天線一實施例1在 x_z 、y_z平面（垂直面）及x-y平面（水平面）於5500 ❹201019528 IX. Description of the Invention: [Technical Field] The present invention relates to a built-in coupled broadband antenna, and more particularly to a built-in broadband antenna suitable for use in wireless communication products. [Prior Art] With the development of wireless communication, the application of wireless networks is more and more extensive, so the performance of the antenna becomes one of the important keys affecting the value of the product. Most of the antennas used in wireless communication products can only operate on a single network, such as wireless local area network (WLAN), with dual-frequency or multi-frequency. The related prior art includes Taiwan's new patent announcement No. 562, 26 “ "Multi-frequency A printed monopole antenna, which discloses an example of designing an antenna on the ground plane using a built-in ground plane of a notebook computer LCD screen, although the antenna is suitable for 2.4 01^(2.4~2.484 0112), 5 01 ^[Includes 5.2 0 out (5.15~5.35〇1^) ❺ and 5.8 GHz (5.725~5.875 GHz)] dual-band wireless local area network system, but its low-frequency bandwidth only barely includes the 2.4 GHz band, making the antenna The production allows for low error tolerances. At the same time, the antenna design lacks the communication function of the Worldwide Interoperability for Microwave Access (WiMAX) network, and thus the operation of the dual network cannot be achieved. In order to solve this problem, we propose an innovative design of a built-in coupled wideband antenna. The antenna of the present invention can generate a low frequency resonant frequency band and a south frequency resonant frequency band and combine a broadband operating bandwidth of about 4 GHz, which is easily covered. Operational requirements for the 2.4 GHz band (2.4 to 2.484 GHz) and the 5 GHz band (including the 5.2 GHz band (515 to 5.35 GHz) and the 5.8 GHz band (5.725 to 5.875 GHz) required for the wireless local area network (WLAN) 201019528 ' It also satisfies the 2.5-band output band (2.5~2.69 (}11〇, 35(^-band (33~38=) and 5GHz band (5.25~5.85GHz) required by the Worldwide Microwave Access Interworking Network (WiMAX) Demand, and the present invention = antenna uses a coupling mechanism, which has the advantages of downsizing, and is suitable for built-in applications in wireless communication products, achieving communication functions of downsizing and wide-band operation. ❹ ❹ [Summary] It is an object of the present invention to provide an innovative design of a built-in type of wideband antenna, and an embodiment of the antenna of the present invention can generate a low frequency resonant frequency band and a high frequency resonant frequency band and combine The wideband operating bandwidth 'easily covers the operational requirements of the 24 GHz and 5 GHz bands required for current wireless local area networks, while also meeting the operational requirements of the 2.5 GHz, 35 café and 5 service bands required by the global microwave access network. Moreover, the antenna of the present invention uses a light-weight mechanism and has the advantages of downsizing, and is suitable for a built-in application in a wireless communication product, and achieves a communication function of downsizing and wide-band operation. The antenna of the present invention comprises: a ground mask having an upper edge, And a grounding point and a short circuit at the upper edge of the grounding surface; a radiation portion substantially at an upper edge of the grounding surface, comprising: a first sub-metal portion having a side adjacent to the ground surface a top edge and having a feed point on the side; a second sub-metal portion adjacent to the first sub-metal portion without being connected; a fit gap, between the first sub-metal portion and the Between the second sub-metal portions, and the minimum width of the gap is less than 5 axes; and - the short-circuit metal portion ' has a start end and an end end and the start end is connected to the second sub-metal portion while the end is connected a short circuit point of the ground plane .201019528; and a feed transmission line for transmitting a signal, comprising: a core wire connected to a feed point of the first-sub-metal portion; and an outer conductor connected to the ground plane Location; at the same time, the light shot is formed by a etching technique on a dielectric substrate. / In this design, we can produce by appropriately adjusting the length and width of the first sub-metal (the sum is generally greater than 8 mm). - a high frequency hill-vibration band; and by appropriately adjusting the length of the second sub-metal portion, the width (total is generally greater than 12 Cong) and the length and width of the short-circuited metal portion (ς and - generally greater than 6 mm) Generating a low frequency resonance frequency band; appropriately adjusting the distance between the feeding point of the first sub-metal portion and the ground plane ("typically less than 3 mm"), and appropriately adjusting the first sub-metal portion and the second sub-metal The width of the coupling gap (generally less than 5mm) can obtain a good impedance f, and combines the low frequency resonant frequency band with the high frequency resonant frequency band and then the wide operating bandwidth of about 4 GHz, easily covering the current wireless zone: network , need 2.4GHz The operation requirements of the band and the 5 GHz band also meet the operational requirements of the 25 GHz band, the 35 GHz band, and the 5 GHaZ band required by the global microwave access interworking network, and the antenna of the present invention uses a fitting mechanism, that is, the first sub-metal In addition to generating a high frequency resonant frequency band, the coupling gap transfers energy to the second sub metal portion and the short circuit gold P for generating a low frequency resonant frequency band, thus sharing a sub-metal portion and making the high frequency Both the low-frequency resonant frequency band and the low-frequency resonant frequency band can be excited, so that it is necessary to obtain a resonance frequency band by a different genus, and it is necessary to increase the overall size of the antenna to obtain σ, thereby achieving the advantages of downsizing, and is suitable for the built-in application on the parallel line 1 product. 'Communication work that achieves downsizing and wideband operation I ^Communication 9 201019528, [Embodiment] Referring to FIG. 1 , a built-in coupling type broadband antenna according to the present invention includes a ground plane 13 having an upper portion The edge 131 has a grounding point 132 and a shorting point 133 at the upper edge 131 of the grounding surface; the radiating portion 14 is located substantially at the upper edge 131 of the grounding surface. The first sub-metal portion 15 has a side 151 adjacent to the upper edge 131 of the ground plane, and has a feed point ❹ I52 on the side 151; a second sub-metal π, close to The first sub-metal portion 15 is not connected; a coupling gap d is between the first sub-metal portion 15 and the second sub-metal portion 16, and the minimum width of the gap d is less than 5 mm; and a short circuit The metal portion 17 has a starting end 171 and an end 172, and the starting end 171 is connected to the second sub-metal portion 16, and the end 172 is connected to the short-circuit point 133 of the ground plane; and a feed transmission line 18, For transmitting signals, comprising: a center conductor 181 connected to the feed point 152 of the first sub-metal portion; and an outer ground conductor 182 connected to the junction location 132 of the ground plane. In this embodiment! The first sub-metal portion is configured to generate a high-frequency resonance band 22, and the first sub-metal portion 15 is coupled to the second sub-metal portion 16 and the short-circuit metal portion by the coupling gap d. For generating a low frequency resonance frequency band 21; at the same time, the radiation portion 14 is formed on the dielectric substrate 19 by printing or etching technology; by the above arrangement, good impedance matching can be obtained, and the low frequency resonance frequency band 21 is combined with the high frequency. Qiu Zhen^ Band 22 can obtain a broadband operating bandwidth of about 4 GHz, easily covering the operation requirements of the 2.4- and 5 GHz bands required for the wireless local area network, and also meeting the requirements of the global microwave access network. The operational requirements of the 2.5 GHz, 3.5 GHz, and 201019528 5 GHz bands, and the antenna-face-to-face mechanism of the present invention have the advantages of downsizing, which is suitable for wireless communication products, and achieves a reduced-width and wide-band operation communication function. © Fig. 2 is a measurement result of the return loss of the antenna of the first embodiment of the present invention; in the towel of the first embodiment, we select the length of the ground plane 13 to be 3 mm and a width of 260 mm; The length is 23 mm and the width is 8 stomachs; the length of the first sub-metal portion b is 8 mm and the width is 6.5 mm, and the distance between the feeding point 152 and the upper edge 131 of the grounding surface is 1.5 mm; The metal portion 16 has a length of 65 mm and a width of &mm; the short metal portion 17 has a length of 8 mm and a width of 81; and the gap width d between the first sub-metal portion 15 and the second sub-metal portion 16 〇5 mm; the feed transmission line 18 is a coaxial transmission line; the dielectric substrate is a glass fiber substrate (FR4) having a thickness of 0.4 mm. From the experimental results obtained, under the definition that the return loss is less than l〇dB, A low frequency resonant frequency band 21 and a high frequency resonant frequency band 22 can be generated to form a broadband operating bandwidth of about 4 GHz, which easily covers the operational requirements of the 24 GHz and 5 GHz bands required for current wireless local area networks. 2.5 GHz, 3.5 GHz, and 5 GHz required for global microwave access networks The operation requirement of the band is 1. The antenna gain of the antenna of the embodiment 1 in the broadband operating band is about 16~4.3dBi 'satisfying the operation requirements of the wireless local area network and the global microwave access interworking network system. The antenna of the present invention has an antenna radiation field measurement result at 2500 MHz in the χ_Ζ, y_z plane (vertical plane) and the xy plane (horizontal plane; assuming the ground is parallel to the x_y plane); FIG. 4 is the 11 201019528 antenna of the present invention. An embodiment 1 is an antenna radiation type 1 measurement at 35 〇〇 MHz in the X_z, y_Z plane (vertical plane) and the x_y plane (horizontal plane; assuming the ground is parallel to the X_y plane); FIG. 5 is an embodiment of the antenna of the present invention. 1 at x500, y_z plane (vertical plane) and xy plane (horizontal plane) at 5500 ❹
MHz的天線輻射場型量測結果。由量測結果可知，天線的 主極化輻射均呈現垂直極化（¾)特性，且在x-y平面（水 平面）產生大致為全向性輻射之場型，滿足無線區域網路 系統之操作需求，同時在x_y平面（水平面）之垂直極化 (¾)分量與水平極化（Εφ)分量相近，則具有抵抗複雜環境 所產生之夕重路控衷減之功能，符合實際應用之需求。 第6圖為本發明天線之第一其他實施例結構圖·本實 施例6與實施例丨之不同在於：該第—子金屬部沾之形狀 為一多邊形，由此樣式之設計，可以縣天狀高頻共振 頻帶22之頻率分佈，同時亦能具有良好之阻抗匹配，因此 可產生-低頻共振頻帶21與—高頻共振頻帶22，進而合成 寬頻之#作頻寬’涵蓋目前無線區域網路與全球微波 取=通網路讀作需求，適合内藏應用在無線通訊產品上 ，達成寬頻操作之通訊功能。 圖為本發明天線之第二其他實施例結構圖；本實 =實施例,之不同在於:該第二子金屬部76之^ 頻帶21之此樣式之設計，可以調整天線之低頻共振 =之頻率分佈，同時亦能具有良好之阻抗匹：The antenna radiation field measurement results of MHz. It can be seen from the measurement results that the main polarized radiation of the antenna exhibits vertical polarization (3⁄4) characteristics, and generates a field of substantially omnidirectional radiation in the xy plane (horizontal plane), which satisfies the operational requirements of the wireless local area network system. At the same time, the vertical polarization (3⁄4) component and the horizontal polarization (Εφ) component in the x_y plane (horizontal plane) are similar to the horizontal polarization (Εφ) component, which has the function of resisting the complex environment, and meets the requirements of practical applications. Figure 6 is a structural view of the first embodiment of the antenna of the present invention. The difference between the embodiment 6 and the embodiment is that the shape of the first sub-metal portion is a polygon, and the design of the pattern can be used for the county. The frequency distribution of the high-frequency resonance frequency band 22 can also have good impedance matching, so that the low-frequency resonance frequency band 21 and the high-frequency resonance frequency band 22 can be generated, and the wide-band frequency bandwidth can be synthesized to cover the current wireless local area network. It is compatible with the global microwave access network, and is suitable for built-in applications in wireless communication products to achieve broadband communication functions. The figure is a structural diagram of the second embodiment of the antenna of the present invention; the actual embodiment is different in that: the design of the band 21 of the second sub-metal portion 76 can adjust the frequency of the low frequency resonance of the antenna. Distribution, but also has a good impedance:
一寬頻之㈣寬，涵蓋目前無線區域網路與全球IS 12 201019528 取互通網路之操作需求，適合内藏應用在無線通訊產品上 ’達成寬頻操作之通訊功能。 第8圖為本發明天線之第三其他實施例結構圖；本實 施例8與實施例1之不同在於：該接地面83、該輻射部84 均由:刷或姓刻技術形成於一介質基板的上，由此配置方 式之叹计，可達成一體成形之製程增加天線製作上之方 ❺ t !·生與實用性’同時亦能具有良好之阻抗匹配，因此可產 生。低頻共振頻帶21與一高頻共振頻帶22，進而產生一寬 頻麵作頻寬以涵蓋目前無線區域網路與全球微波存取互通 網路之操作需求，適合内藏應用在無線通訊產品上，達成 寬頻操作之通訊功能。 第9圖為本發明天線之第四其他實施例結構圖；本實 施例9與實施例χ之不同在於：該接地面％、該輕射部94 ”屬片冲壓或切割製作而成由此配置方式之設計亦 ❹能簡易地實現天線之製程，同時亦能具有良好之阻抗匹配 因此可產生一低頻共振頻帶21與一高頻共振頻帶22，進 而產生-寬頻操作頻寬以涵蓋目前無線區域網路與全球微 波存取互通網路之操作需求，適合内藏應用在無線通訊產 品上，達成寬頻操作之通訊功能。 以上說明中所述之實施例僅為說明本發明之原理及其 =效’而非限制本發明。因此，習於此技術之人士可在不 运旁本發月之精神對上述實施例進行修改及變化，本發明 之權利範圍應如後述之申請專利範圍所列。 13 201019528 ' 【圖式簡單說明】 第1圖為本發明天線一實施例結構圖。 第2圖為本發明天線一實施例之返回損失實驗量測結果。 第3圖為本發明天線一實施例之輻射場型於頻率2500 MHz 之量測結果。 第4圖為本發明天線一實施例之輻射場型於頻率3500 MHz 之量測結果。 ® 第5圖為本發明天線一實施例之輻射場型於頻率5500 MHz 之量測結果。 第6圖為本發明天線之第一其他實施例結構圖。 第7圖為本發明天線之第二其他實施例結構圖。 第8圖為本發明天線之第三其他實施例結構圖。 第9圖為本發明天線之第四其他實施例結構圖。 【主要元件符號說明】 Q 1 :本發明天線一實施例 13 :接地面或接地金屬貼片 131 :接地面之上方邊緣 132 :接地點 133 :短路點 14 :輻射部 15 :第一子金屬部 151 :第一子金屬部之一侧邊 152 :饋入點 14 201019528 " 16:第二子金屬部 17 :短路金屬部 171 :短路金屬部之起始端 172 :短路金屬部之末端 18 :饋入傳輸線 181 :中心導線 182 :外層接地導體 级19 :介質基板 d :耦合間隙(第一子金屬部與第二子金屬部之間距) 21 :天線之低頻共振頻帶 22 :天線之局頻共振頻帶 6:本發明天線之第一其他實施例 65 :第一子金屬部 ® 651 :第一子金屬部之一側邊 652 :饋入點 7:本發明夫線之第二其他實施例 76 :第二子金屬部 8:本發明天線之第三其他實施例 83 :接地面或接地金屬貼片 831 :接地面之上方邊緣 15 201019528 832 :接地點 833 :短路點 84 :輻射部 89 :介質基板 9:本發明天線之第四其他實施例 93 :接地面或接地金屬貼片 931 :接地面之上方邊緣 932 :接地點 933 :短路點 94 ··輻射部A wide (four) wide, covering the current wireless local area network and the global IS 12 201019528 to access the interoperability network operation requirements, suitable for embedded applications in wireless communication products to achieve broadband operation of communication functions. Figure 8 is a structural view of a third embodiment of the antenna of the present invention; the eighth embodiment is different from the first embodiment in that the grounding surface 83 and the radiating portion 84 are formed by a brush or a surname technique on a dielectric substrate. On the other hand, the sigh of this configuration can achieve an integrated process to increase the antenna fabrication. The life and practicality can also have good impedance matching, so it can be generated. The low frequency resonance frequency band 21 and a high frequency resonance frequency band 22, thereby generating a wide frequency plane as a bandwidth to cover the operation requirements of the current wireless local area network and the global microwave access interworking network, and are suitable for the built-in application in the wireless communication product. Communication function for broadband operation. Figure 9 is a structural view of a fourth embodiment of the antenna of the present invention; the present embodiment 9 differs from the embodiment in that the ground plane % and the light-emitting portion 94 are formed by stamping or cutting. The design of the method can also easily realize the process of the antenna, and also has good impedance matching, so that a low frequency resonance frequency band 21 and a high frequency resonance frequency band 22 can be generated, thereby generating a broadband operating bandwidth to cover the current wireless area network. The operational requirements of the road and the global microwave access interworking network are suitable for the built-in application on the wireless communication product to achieve the communication function of the broadband operation. The embodiments described in the above description are only for explaining the principle of the invention and its effect. The present invention is not limited thereto, and thus, those skilled in the art can modify and change the above embodiments without departing from the spirit of the present invention. The scope of the present invention should be as set forth in the appended claims. 13 201019528 BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a structural view showing an embodiment of an antenna according to the present invention. Fig. 2 is a result of an experimental measurement of return loss of an antenna according to an embodiment of the present invention. The measurement results of the radiation field type of the antenna of the present invention at a frequency of 2500 MHz are shown in Fig. 4. Fig. 4 is a measurement result of the radiation field type of the antenna of the present invention at a frequency of 3500 MHz. The radiation field type of the antenna is measured at a frequency of 5500 MHz. Fig. 6 is a structural view of the first embodiment of the antenna of the present invention. Fig. 7 is a structural view of the second embodiment of the antenna of the present invention. Figure 8 is a structural view of a third embodiment of the antenna of the present invention. Figure 9 is a structural view of a fourth embodiment of the antenna of the present invention. [Description of main components] Q 1 : Antenna of the present invention: Embodiment 13: Ground plane Or grounding metal patch 131: upper edge 132 of the grounding surface: grounding point 133: shorting point 14: radiating portion 15: first sub-metal portion 151: one side of the first sub-metal portion 152: feeding point 14 201019528 " 16: second sub-metal portion 17: short-circuit metal portion 171: short-circuit metal portion start end 172: short-circuit metal portion end 18: feed-in transmission line 181: center conductor 182: outer layer ground conductor level 19: dielectric substrate d: coupling Clearance Distance from the second sub-metal portion) 21: Low frequency resonance band of the antenna 22: Local frequency resonance band of the antenna 6: First other embodiment 65 of the antenna of the present invention: First sub-metal part 651: First sub-metal part One side 652: feed point 7: second other embodiment 76 of the invention: second sub-metal part 8: third embodiment 83 of the antenna of the invention: ground plane or grounded metal patch 831: Upper edge of ground plane 15 201019528 832 : Ground point 833 : Short circuit point 84 : Radiation part 89 : Dielectric substrate 9 : Fourth embodiment 93 of the antenna of the invention : Ground plane or grounded metal patch 931 : Upper edge of the ground plane 932: Grounding point 933: Short-circuit point 94 · Radiation
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