1327791 九、發明說明： 【發明所屬之技術領域】 本發明係有關於一種天線，特別是有關於一種適用於 手機裝置之内藏式多頻天線。 【先前技術】 由於廣域無線網路（WWAN，Wireless Wide Area Network)技 術的蓬勃發展，今日人們已能夠透過手機裝置隨時隨地的 •與想要聯繫的人進行通話。然而由於全球不同國家常採用 不同的廣域無線網路系統來傳遞訊號，因此全球存在著多 種廣域無線網路通訊標準，如全球行動通訊系統（Global System for Mobile Communication,美規 GSM 850，824 〜894 MHz and歐規GSM900, 880〜960 MHz)、數位通訊系統（DCS， Digital Communication System，1710 〜1880 MHz)以及個人通訊服 務系統（PCS，Personal Communication System，1850 ~ 1990 MHz)等 φ 。所以使用者往往必須因為國家或地域的不同而更換不同 手機，這使得手機使用的便利性受到了相當大限制。 單一手機同時具備多種廣域無線網路系統操作功能已 成為必然之趨勢，然而若要在單一手機内配置多天線系統 ，其必須克服電磁干擾以及高天線製作成本等問題。因此 若能設法設計出具有同時涵蓋多個操作頻帶特性之單一天 線實為較佳之問題解決方案。先前相關美國專利第6727854 號“平面倒 F 形天線（planar inverted-F antenna)’’，其揭示一 種可雙頻操作之手機天線設計，該天線僅能達成涵蓋歐規 1327791 GSM900系統以及DCS系統之頻寬需求，且該天線結構較 為複雜。而台灣發明專利號第1222769號"可雙頻操作之低 姿式單偶極天線"，其揭示一種可雙頻操作之手機天線， 該天線雖然結構較為簡單，但其也僅能涵蓋GSM9〇〇系統 以及DCS系統之操作頻帶。為解決這些問題，我們提出一 種適用於手機裝置之創新内藏式多頻天線設計，本發明天1327791 IX. Description of the Invention: [Technical Field] The present invention relates to an antenna, and more particularly to a built-in multi-frequency antenna suitable for use in a mobile phone device. [Prior Art] Due to the rapid development of Wide Area Wireless Network (WWAN) technology, people have been able to talk to people who want to contact anytime, anywhere via a mobile device. However, because different countries in the world often use different wide-area wireless network systems to transmit signals, there are various wide-area wireless network communication standards, such as Global System for Mobile Communication (US GSM 850, 824). ~894 MHz and European standard GSM900, 880~960 MHz), digital communication system (DCS, Digital Communication System, 1710 ~ 1880 MHz) and personal communication service system (PCS, Personal Communication System, 1850 ~ 1990 MHz) and so on. Therefore, users often have to change different mobile phones because of different countries or regions, which makes the convenience of using mobile phones considerably limited. It is inevitable that a single mobile phone has multiple wide-area wireless network system operation functions. However, if multiple antenna systems are to be deployed in a single mobile phone, it must overcome electromagnetic interference and high antenna production costs. Therefore, it would be better to try to design a single day line with multiple operating band characteristics. Prior to the "planar inverted-F antenna" of the US Pat. No. 6,727,854, which discloses a dual-frequency operation of a mobile phone antenna design that can only achieve a European standard 1327791 GSM900 system and a DCS system. The bandwidth requirement, and the antenna structure is more complicated. Taiwan Patent No. 1222769 "a dual-frequency operation of the low-profile single dipole antenna", which discloses a dual-frequency operation of the mobile phone antenna, although the antenna The structure is relatively simple, but it can only cover the operating band of the GSM9〇〇 system and the DCS system. To solve these problems, we propose an innovative built-in multi-frequency antenna design suitable for mobile phone devices.
線可以達成同時涵蓋GSM850 、GSM900 、DCS以及PCS 行動通訊系統操作之頻寬需求。同時本發明天線除了可多 頻操作、結構簡單以及製作成本低以外，其更可以在維持 頻寬特性的情況下，以多次彎折的方式來達成縮小化的目 的，因此其相當適合應用内藏於各種手機裝置。 【發明内容】 本發明之目的在於提供一種適用於手機裝置之創新内 式多頻天線設計，其除了具備可縮小化的優點外，更可 ^達成多頻帶操作，同時本發明天線結構簡單、製作成本 低，相當適合應用内藏於各種手機裝置。 本^天線之-實施例！，包含：一接地面以及一輕 接地面，形狀大致為—㈣ 及—相對於該上方邊绫之丁士鱼 上万違緣以 ::兩=該輕射部，係、由印刷或_之方式形成於 。該輕射=ί:ί:·: 一11射金屬線以及-饋入金屬部 該韓射金屬線之&點》別電氣連接於該兩短路點， 射金屬線之長度接近該天線較低共振模態中心頻率之 6 間形成-封閉迴路了2數次彎折’與該接地面上方邊緣 圍之區域内，包含：=入金屬部’位於該封閉迴路所包 饋入金屬片，大I.貝入金屬片以及一饋入金屬線。該 置附近。該饋入金屬緣，甘所匕圍之Q域的中心位 ’另一浐细 、” /、一端電氣連接於該饋入金屬片 而朝向5亥接地面之上太、喜接女a μ ^丄 兩短路點之間，且該另—端==向延伸，线位於該 ί^為該天線之訊號饋入點。 射金屬當調整該饋八金屬部_ 作頻嫌夕入t 波迴圈共振模態以及一較高操 ':圈共振模態，也因為使用輕合饋入的方式 、，仔遠半波迴圈共振模態以及該全波迴圈共振模態均得 以產生較佳之阻抗頻寬。 實驗結果顯示，本發明之一實施例i能同時涵蓋行動 通訊系統GSM850、GSM900、Dcs與pcs之系統頻寬， 且本發明天線之輻射場型、增益與輻射效率也均相當符合 行動無線通訊之實際應用需求。 配合下列圖式、實施例之詳細說明及申請專利範圍， 將上述本發明之其他目的與優點詳述於後。 【實施方式】 第1圖為本發明天線之一實施例1結構圖，包含：— 接地面11以及一輻射部12。該接地面丨〗，形狀大致為一矩 形，具有一上方邊緣111以及一相對於該上方邊緣U1之 1327791 緣m附近並具有兩短路點 -介質二?輻Γ12,係由印刷或姓刻之方式形成於 r入今上，包含：一輻射金屬線13以及-=屬多該輻射金屬線13,其兩端點⑶、132分 長於該兩短路點113、114，該輕射金屬線13之 又接近該天線較低共振模態2丨中心頻率之二分之 並具有複數_人相，與該接地面上方邊緣11 ^ 封閉迴路133。該餹入+麗卹1y1 t 風 包圍之區域内，包含·==於該封閉迴路133所 饋入i屬片15以及一饋入金屬線 。該饋入金屬片15，大致位於該封閉迴路133所包圍之 區域的中心位置附近。該饋入金屬線16，其一端162電氣 連接於該饋入金屬片15,另一端161朝向該接地面之上方 邊緣U1方向延伸，大致位於該兩短路點113、114之間 ，且該另一端161為該天線之訊號饋入點。 本發明天線主要是藉由適當調整該饋入金屬部ΐ4與該 輻射金屬線13之間能量耦合的方法，使該封閉迴路13\'能 成功的被激發出一較低操作頻帶之半波迴圈共振模態21以 及一較高操作頻帶之全波迴圈共振模態22，也因為使用耦 合饋入的方式，使得該共振模態21以及該共振模態22得以 產生較佳之阻抗頻寬。該較低操作頻帶之共振模態以能滿 足涵蓋行動通訊系統GSM850(824-894 MHz)與GSM900 (890-960 MHz)之頻寬需求，而該較高操作頻帶之共振模 態22能同時滿足涵蓋行動通訊系統DCS(171(M88〇 幻 與PCS(1850-1990 MHz)之頻寬需求。本發明天線同時具備 丄327791 優點，因而相 了可多頻操作、結構簡單以及製作成本低的 當適合内藏應用於各種手機裝置。 Μ Ϊ^ —實施例1 ，本實施例選擇下列尺寸進行實驗量測: 錢地面η長度為9〇咖、寬度為60mm ;該轄射部12係 以印刷之方式形成於一介質基板 ’、 貝丞极1Z1之表面上；該介質基 分1平仃該上方邊緣111方向之長度為60_，其垂直 丨邊緣U1方向之寬度為2〇麵；該輻射金屬線13之 見度為o.5mm，總路徑長度約為182_ ;該兩短路點ιΐ3 ;1H間之距㈣為1〇驅；該饋入金屬片15之總長度為 、總寬度為14麵；該饋入金屬線16之長度為斗腿 、見度為1.5 mm。如第2圖所示，由所得的測試結果，縱 軸表不返回損失，橫軸表示操作頻率，在返回損失小於6 dB的定義下，該較低操作頻帶之共振模態21能滿足涵罢行 動通訊系統 gSM85G(824_894 MHz)與 GSM则（請_96〇 MHz)之頻寬需求’而該較高操作頻帶之共振模態也能 同時滿足涵蓋行動通訊系統dcs(171〇188〇mHz)與 PCS(1850-1990 MHz)之頻寬需求。 第3圖與第4圖分別為本發明天線—實施例丨分別於 _MHz肖刪驗之實驗量_射場翻1所得之結 果’本發明天線無論低頻操作頻帶與高頻操作頻帶之輕射 場型在水平面（x_y平面）均具有全向性（_⑻加 特性:因而其相當能滿騎動通訊系統之實際應用需求。 第5圖為本發明天線一實施例1之較低操作頻帶天線 9 I32//yi =效率圖。左邊縱軸表示天線增益，右邊縱軸 ί=Μ=Γ率’横料轉作料；由所得之結果， 在讀㈣與嶋_頻帶内，天線增益曲線51分佈於 -1.0〜l.OdBii間’天線輕射效率曲線52分佈於5〇%〜_之 間滿足行動通訊系統實際操作之增益與效率需求。 描/si 為本發明天線—實施例1之較高操作頻帶天線 增益圖與簡效率圖。左邊縱歸示天線增益，右邊縱轴The line can meet the bandwidth requirements of both GSM850, GSM900, DCS and PCS mobile communication systems. At the same time, in addition to multi-frequency operation, simple structure and low manufacturing cost, the antenna of the present invention can achieve the purpose of downsizing in a plurality of bending manners while maintaining the bandwidth characteristic, so it is quite suitable for application. Hidden in various mobile phone devices. SUMMARY OF THE INVENTION An object of the present invention is to provide an innovative internal multi-frequency antenna design suitable for a mobile phone device. In addition to the advantages of downsizing, the invention can achieve multi-band operation, and the antenna structure of the present invention is simple and fabricated. Low cost, quite suitable for applications built in a variety of mobile phone devices. This ^ antenna - the embodiment! , including: a ground plane and a light ground plane, the shape is roughly - (four) and - relative to the upper side of the squid tens of thousands of violations to:: two = the light shot, the system, by printing or _ The way is formed. The light shot = ί: ί: ·: an 11-shot metal wire and - fed into the metal portion of the Korean metal wire & point is not electrically connected to the two short-circuit points, the length of the metal wire is close to the antenna lower The resonance mode modal center frequency is formed between 6 and the closed loop has 2 times of bending and the area around the upper edge of the ground plane includes: = the metal part is located in the closed loop and is fed into the metal piece, the large I .Bein the metal piece and a feeding metal wire. It is near this setting. The feeding metal edge, the center of the Q domain of the 匕 匕 ' ' 浐 浐 浐 浐 浐 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q丄 between the two short-circuit points, and the other end == direction extension, the line is located at the signal feeding point of the antenna. The metal is adjusted when the feeding of the metal part _ Resonance mode and a higher operation ': circle resonance mode, also because of the use of light and feed, the far half-wave loop resonance mode and the full-wave loop resonance mode can produce better impedance The experimental results show that one embodiment of the present invention can cover the system bandwidth of the mobile communication systems GSM850, GSM900, Dcs and pcs, and the radiation field, gain and radiation efficiency of the antenna of the invention are also in line with the action. The actual application requirements of the wireless communication. The other objects and advantages of the present invention will be described in detail below with reference to the following drawings, detailed description of the embodiments, and the scope of the claims. Example 1 structure diagram, including: - Ground 11 and a radiating portion 12. The grounding surface is substantially rectangular in shape, having an upper edge 111 and a vicinity of a margin of 1327791 at the edge of the upper edge U1 and having two short-circuit points - a medium two? Formed by printing or surname, comprising: a radiating metal line 13 and -= are the radiating metal lines 13, and the two ends (3) and 132 are longer than the two short-circuit points 113, 114. The light-emitting metal line 13 is closer to the lower resonance mode of the antenna, and the second frequency is two-half and has a complex _ human phase, and the upper edge of the ground plane 11 ^ closes the loop 133. The smashing + sleeving 1 y1 t wind In the enclosed area, the === is fed into the closed circuit 133 and the feed metal wire 15 is fed. The feed metal piece 15 is located substantially near the center of the area surrounded by the closed circuit 133. The feeding wire 16 has one end 162 electrically connected to the feeding metal piece 15 and the other end 161 extending toward the upper edge U1 of the grounding surface, substantially between the two short-circuit points 113, 114, and the other end 161 is the signal feeding point of the antenna. The invention The antenna is mainly caused by appropriately adjusting the energy coupling between the feeding metal portion ΐ4 and the radiating metal line 13, so that the closed loop 13\' can be successfully excited to a half-wave loop resonance of a lower operating frequency band. The modality 21 and the full-wave loop resonance mode 22 of a higher operating frequency band also allow the resonant mode 21 and the resonant mode 22 to produce a better impedance bandwidth because of the coupling feed. The resonant mode of the low operating band is sufficient to meet the bandwidth requirements of the mobile communication system GSM850 (824-894 MHz) and GSM900 (890-960 MHz), and the resonant mode 22 of the higher operating band can simultaneously satisfy the coverage action Communication system DCS (171 (M88 illusion and PCS (1850-1990 MHz) bandwidth requirements. The antenna of the invention has the advantages of 丄327791 at the same time, so that it can be multi-frequency operated, simple in structure and low in production cost, and is suitable for use in various mobile phone devices.实施 — ^ - Example 1, this embodiment selects the following dimensions for experimental measurement: the length of the money floor η is 9 〇 coffee, the width is 60 mm; the radiant part 12 is formed by printing on a dielectric substrate ', shell On the surface of the drain 1Z1; the length of the medium base 1 is 60_ in the direction of the upper edge 111, and the width in the direction of the vertical edge U1 is 2〇; the visibility of the radiation metal line is 0.5 mm. The total path length is about 182 _; the two short circuit points ι ΐ 3; the distance between 1H (four) is 1 〇 drive; the total length of the feed metal piece 15 is 14 faces; the length of the feed metal wire 16 is bucket Legs and visibility are 1.5 mm. As shown in Fig. 2, from the obtained test results, the vertical axis indicates no loss, and the horizontal axis indicates the operating frequency. Under the definition that the return loss is less than 6 dB, the resonant mode 21 of the lower operating band can satisfy the culvert. The mobile communication system gSM85G (824_894 MHz) and the GSM (please _96〇MHz) bandwidth requirements' and the resonant mode of the higher operating band can also meet the coverage of the mobile communication system dcs (171〇188〇mHz) The bandwidth requirement of PCS (1850-1990 MHz). Fig. 3 and Fig. 4 are respectively the results of the antenna of the present invention - the 实验 肖 删 删 实验 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ In the horizontal plane (x_y plane), it has omnidirectionality (_(8) plus characteristic: thus it is quite capable of full application of the riding communication system. Fig. 5 is a lower operating band antenna 9 I32/ of the antenna of the first embodiment of the present invention. /yi = efficiency graph. The left vertical axis represents the antenna gain, and the right vertical axis ί = Μ = Γ rate 'transverse material conversion material; from the results obtained, in the read (four) and 嶋 _ bands, the antenna gain curve 51 is distributed at -1.0~ l.OdBii 'antenna light efficiency curve 52 is distributed between 5〇%~_ to meet the gain and efficiency requirements of the actual operation of the mobile communication system. The si/si is the antenna of the invention - the higher operating band antenna gain of the embodiment 1 Figure and simplified efficiency diagram. The left side of the vertical return antenna gain, the right vertical axis
表丁天線輻射效率，橫軸表示操作頻率；由所得之結果’ 在DCS與PCS頻帶内，天線增益曲線61分佈於L9〜健i 之間’天線輻射效率曲線62分佈於85%〜娜之間能滿足 行動通訊系統實際操狀增益與效率需求。 第圖為本發明天線之第—其他實施例結構圖。該第 一其他實施例雖然其饋入金屬線16之形狀與該實施例1有 所差異’但其也能有效的與該饋人金屬片75電氣連接。因 此該第-其他實施例也能達成同時涵蓋行動通訊系統 GSM850、GSM9〇〇 、DCS與pcs之系統頻寬，而達成單 一天線多頻操作之實際應用需求。 第8圖為本發明天線之第二其他實施例結構圖。該第 一其他實施例將該輻射部81經由大致平行之二彎折線812 、813作二次彎折，並將其印刷或蝕刻之方式形成於一介 質塊811之表面上，如此可以大幅減少天線整體所佔用之 U體積，而達到縮小化的目的。由於本發明天線的阻抗變 化穩定性高，所以雖然該第二其他實施例經過二次彎折， 但其亦能獲得與該實施例1差異不大之阻抗頻寬與輻射特 1327791 性。因此該第二其他實施例除了能同時涵蓋行動通訊系統 GSM850、GSM900、⑽與pcs之系統頻寬以外其天 線體積的縮小化’使得該第二其他實施例更能符合内藏應 用於各種手機褒置内之實際需求。 第9圖為本發明天線之第二其他實施例之返回損失實 驗量測結果。參考第9目’該第二其他實施例選擇下列尺 寸進行貝驗里測.该接地面丨丨長度為9〇 _、寬度為 mm，該輻射部81係以印刷之方式形成於一介質塊811之 表面上；該介質塊811平行該上方邊緣1U方向之長度為 6〇mm，其垂直該上方邊緣1U方向之寬度為= i 方邊緣111至該彎折線812之距離），其垂直該接地面u 方向之高度為8mm(該該彎折線812至該彎折線813之距 離），遙輻射金屬線13之寬度為〇.5 mm，總路徑長度約為 186mm ;該兩短路點113、114間之距離d為1〇而^ ;該 饋入金屬片15平面展開之總長度為24mm、總寬度為15 mm，該饋入金屬線16之長度為4]11111、寬度為 第9圖所示，由所得的測試結果，縱軸表示返回損失，橫 軸表示操作頻率’在返回損失小於6 dB的定義下，該第二 其他實施例之較低操作頻帶之共振模態91能滿足涵蓋行動 通訊系統 GSM 850(824-894 MHz)與 GSM900 (890-960 MHz)之頻寬扃求，而该弟二其他實施例之較高操作頻帶 之共振模態92也能同時滿足涵蓋行動通訊系統DcS(171〇 -1880 MHz)與 PCS(185(M990 MHz)之頻寬需求。 综合上述的說明，本發明天線具有結構簡單、製作成 1327791 本低、可多頻帶操作特性以及可縮小化的優點，功能明確 ，因此本發明天線甚具高度產業應用價值，足以符合發明 之範疇。 在上述說明中所敘述之實施例僅為說明本發明裝置之 原理及其功效，而非限制本發明。因此，習於此技術之人 士可在不違背本發明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。 【圖式簡單說明】 第1圖為本發明之手機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測量圖。 第3圖為本發明天線一實施例操作於89〇 mhz之實驗測量 輻射場型圖。 第4圖為本發明天線一實施例操作於185〇 “Hz之實驗測量 幸虽射場型圖。 第5圖為本發明天線一實施例之較低操作頻帶天線增益與 輻射效率圖。 苐6圖為本發明天線一實施例之較高操作頻帶天線增益與 輻射效率圖。 第7圖為本發明天線第一其他實施例結構圖。 第8圖為本發明天線第二其他實施例結構圖。 第9圖為本發明天線第二其他實施例之返回損失實驗 圖。 12The radiation efficiency of the antenna, the horizontal axis represents the operating frequency; the result is 'in the DCS and PCS bands, the antenna gain curve 61 is distributed between L9 and jiani'. The antenna radiation efficiency curve 62 is distributed between 85% and Na. It can meet the actual operating gain and efficiency requirements of mobile communication systems. The figure is a block diagram of another embodiment of the antenna of the present invention. The first other embodiment, although the shape of the feed metal wire 16 is different from that of the embodiment 1, is also effective in electrically connecting the feed metal piece 75. Therefore, the first and other embodiments can also achieve the system bandwidth covering the mobile communication systems GSM850, GSM9〇〇, DCS and pcs, and achieve the practical application requirements of the single antenna multi-frequency operation. Figure 8 is a structural view of a second other embodiment of the antenna of the present invention. In the first other embodiment, the radiating portion 81 is bent twice by the substantially parallel two bending lines 812 and 813, and is printed or etched on the surface of a dielectric block 811, so that the antenna can be greatly reduced. The U volume occupied by the whole is reduced. Since the impedance variation stability of the antenna of the present invention is high, although the second other embodiment is subjected to the secondary bending, it is also possible to obtain the impedance bandwidth and the radiation characteristic 1327791 which are not significantly different from the first embodiment. Therefore, the second other embodiment can reduce the size of the antenna in addition to the system bandwidth of the mobile communication systems GSM850, GSM900, (10) and pcs, so that the second other embodiment is more suitable for use in various mobile phones. The actual demand within the set. Figure 9 is a graph showing the return loss test results of the second embodiment of the antenna of the present invention. Referring to the ninth item, the second other embodiment selects the following dimensions for the Bayesian test. The ground plane has a length of 9 〇 and a width of mm, and the radiating portion 81 is formed in a dielectric block 811 by printing. The length of the dielectric block 811 parallel to the upper edge 1U is 6〇mm, and the width of the upper edge 1U is perpendicular to the distance from the i-side edge 111 to the bending line 812, and the ground plane is perpendicular to the ground plane The height of the u direction is 8 mm (the distance between the bending line 812 and the bending line 813), the width of the remote radiating metal line 13 is 〇.5 mm, and the total path length is about 186 mm; between the two short-circuit points 113, 114 The distance d is 1 〇 and ^; the total length of the planar feeding of the feeding metal piece 15 is 24 mm, the total width is 15 mm, the length of the feeding metal wire 16 is 4] 11111, and the width is shown in FIG. The resulting test results show that the vertical axis represents the return loss and the horizontal axis represents the operating frequency 'under the definition that the return loss is less than 6 dB. The resonant mode 91 of the lower operating band of the second other embodiment can satisfy the coverage of the mobile communication system GSM. 850 (824-894 MHz) and GSM900 (890-960 MHz) bandwidth The resonance mode 92 of the higher operating band of the other embodiments of the second embodiment can also satisfy the bandwidth requirement of the mobile communication system DcS (171〇-1880 MHz) and PCS (185 (M990 MHz). The antenna of the present invention has the advantages of simple structure, low cost, multi-band operation characteristics, and downsizing, and has a clear function. Therefore, the antenna of the present invention has a high industrial application value and is sufficient to meet the scope of the invention. The embodiments described in the above description are merely illustrative of the principles of the present invention and its functions, and are not intended to limit the scope of the invention. The invention may be modified and changed without departing from the spirit of the invention. The scope of the present invention should be as described in the following claims. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a structural view of an embodiment of a mobile phone antenna of the present invention. FIG. 2 is a return loss experiment of an antenna according to an embodiment of the present invention. Figure 3 is an experimental measurement radiation pattern of an antenna according to an embodiment of the present invention operating at 89 〇 mhz. Figure 4 is an embodiment of an antenna according to the present invention. 185 〇 "Experimental measurement of Hz, although the field pattern. Figure 5 is a diagram showing the lower operating band antenna gain and radiation efficiency of an antenna according to an embodiment of the present invention. Figure 6 is a diagram showing a higher operating band of an antenna according to an embodiment of the present invention. Figure 7 is a structural view of a first embodiment of the antenna of the present invention. Figure 8 is a structural view of a second embodiment of the antenna of the present invention. Figure 9 is a second embodiment of the antenna of the present invention. Return to the loss experiment diagram. 12
【主要元件符號說明】 I 本發明之手機天線一實施例 II 接地面 111接地面之上方邊緣 112 接地面之下方邊緣 113，114短路點 12 輻射部 121 介質基板 13 輕射金屬線 131，132輻射金屬線之端點 133 該輻射金屬線與該接地 閉迴路 面上方邊緣間 形成之封 134 該封閉迴路包圍之區域 M, 74饋入金屬部 15, 75饋入金屬片 151，751饋入金屬片之上方邊緣 152, 752饋入金屬片之下方邊緣 16 饋入金屬線 謂金屬線之起始端（訊號饋入端 162饋人金屬線之末端（電氣連接端） 21，9i本發明天線較低操作頻帶之一共振模熊 22, 92本發明天線較高操作頻帶之一共振模： 51本發明天隸低操相帶之 52 本發明天線較低操作頻帶之夭I 只▼之天線輻射效率曲線 13 61 本發明天線較高操作頻帶之天線增益曲線 62 本發明天線較高操作頻帶之天線輕射效率曲線 81 具有二次彎折之輻射部 811 介質塊 812, 813 彎折線 d 本發明天線該兩短路點間之距離[Description of main component symbols] I. Embodiment II of the mobile phone antenna of the present invention II The upper edge 112 of the ground plane of the ground plane 111 The lower edge of the ground plane 113, 114 Short-circuit point 12 Radiation part 121 Medium substrate 13 Light-emitting metal line 131, 132 radiation The end point 133 of the metal wire and the seal 134 formed between the radiating metal line and the upper edge of the ground closed circuit surface. The area M, 74 surrounded by the closed circuit is fed into the metal portion 15, 75 is fed into the metal piece 151, and the 751 is fed into the metal piece. The upper edge 152, 752 feeds the lower edge 16 of the metal piece and feeds the metal wire as the starting end of the metal wire (the signal feeding end 162 feeds the end of the metal wire (electrical connection end) 21, 9i the lower operation of the antenna of the present invention One of the frequency bands, the resonant mode bear 22, 92, one of the higher operating frequency bands of the antenna of the present invention, the resonant mode: 51, the invention is low in the operating band, 52 of the lower operating band of the antenna of the invention, and the antenna radiation efficiency curve 13 The antenna gain curve of the antenna of the present invention has a higher operating frequency band. The antenna light-emission efficiency curve 81 of the antenna of the present invention has a second bending radiation portion 811. The dielectric block 812, 813 Bending line d The distance between the two short-circuit points of the antenna of the present invention