M307860 捌、新型說明 【新型所屬之技術領域】 本創作係有關於一種多頻天線之創作，特別是有關於 一種具有寄生元件及擴大接地面積的多頻天線之創作。 【先前技術】 隨著無線通訊技術的發展，現今市面上已經出現許多 • 提供無線通訊功能的電子裝置。而除了行動電話以及筆記 型電腦等行動通訊的產品之外，桌上型電腦也廣泛利用無 線通訊技術來傳遞資訊。同時，為了使這些電子裝置具有 無線通訊功能，先前技術已經揭露適用於這些電子裝置的 天線。在先前技術當中，這種電子裝置通常會外接如無線 網路卡等裝置，來作為傳輸無線訊號之用，但如此一來使 用者要使用無線網路通訊時，就要負擔一筆額外的費用來 購置無線網路卡。 ® 先前技術也揭露一種相關的天線。以下請參考圖1A關 於先前技術之天線90，其具有一輻射元件91、一連接元件 92以及一接地元件93。其中，連接元件92具有一第一端 921以及一第二端922 ;並且連接元件92之第一端921連 • 接至輻射元件91，第二端922連接至接地元件93。 接著，請參考圖1B關於依據先前技術之天線90所量 測之不同頻率之效能。如圖1B所顯示，在低頻 2.4GHz〜2.5GHz時，先前技術之天線90的效能約為50%， 5 M307860 在高頻5.15GHz〜5.85GHz時，先前技術之天線9〇的效能 則僅約為40%。 因此，本案發明人思及若能設計出一種具有比先前技 術更佳效能的天線，並且將此天線應用於桌上型電腦等電 子裝置上，如此即能節省建立無線通訊系統所需的成本。 【新型内容】 • 本創作之主要目的係在提供多頻天線及其應用，使得 该多頻天線能提升頻寬及輻射效率。 一為達成上述之目的，本創作提供一種多頻天線，其包 括幸田射兀件、接地元件、連接元件以及寄生元件。其中連 接讀包括第-端及第二端。接地元件包括第一平面、第 $平面及第三平面，並且第三平面分別與第一平面及第二 w面，直相連接，使得接地元件整體的截斷面實質略呈一 •由於接地元件呈現彎曲的形狀，、使得輻 線提升效能Γ面之間的高度增加，而使本創作之多頻天 此夕卜 面積，用以面的表面積大於第一平面的表 平面的末端 、天線的接地面積。本創作另外在第- 連接，以增加C，寄生元件與第一平面垂直相 日加夕頻天線的頻寬。 平面上，利用^作〇頻天線可直接或間接設置於一金屬 的接地面積，=；；+平面與金料面嵌合，以增加多頻天線 、進而增加多頻天線的頻寬。再者，第二平面 M307860 可以用螺絲或焊接等其他嵌合方式與金屬平面相結合。 再者’在本創作的實施例中，多頻天線可以設置於電 子設備的殼體上’利用電子設備的殼體做為多頻天線的接 地本貝施例也可以依照不同的需求增加或減少多頻天 線的數量或改變多頻天線的裝設位置。 由於本創作構造新穎，能提供產業上利用，且確有增 進功效，故依法申請新型專利。 ’【實施方式】 為讓本發明之上述和其他目的、特徵和優點能更明顯 易懂’下文特舉多頻天線之實施例與多頻天線應用於電子 裝置之實施例，並配合所附圖式，作詳細說明如下。 請先參考圖2A關於本創作之多頻天線10。如圖2A所 不’本創作之多頻天線1〇係為一種平板倒F型天線 (PIFA)〇多頻天線10包括輻射元件（radiating element) 21、接地元件（grounding element) 22、連接元件（connecting element) 23 以及寄生元件（parasitic element) 31。其中連 接元件23包括第一端231及第二端232。接地元件22包 括第一平面221、第二平面222及第三平面223，並且第三 平面223分別與第一平面221及第二平面222垂直相連 接’使得接地元件22整體的截斷面實質略呈一個匸字型的 立體結構。並且，第二平面222的表面積大於第一平面221 的表面積’用以增加多頻天線10的接地面積。輻射元件 21可為長條狀之金屬板，當電流饋入時，輻射元件21可 透過電流激發輻射能量。 7 M307860 如圖2A所示，連接元件23的第一端231電性連接輻 射元件21，並且第二端232電性連接接地元件22的第一 平面221。此外，第一端231與輻射元件21彼此垂直相連 接，並且第二端232與第一平面221彼此垂直相連接，以 使多頻天線10形成一立體化結構。並且由於接地元件22 的彎曲形狀，使得輻射元件21到第二平面222之間的高度 相較於圖1A之先前技術有所增加，而可使多頻天線10提 升輻射效率。連接元件23包括一饋入點（feeding point) φ 233，其係略外凸於連接元件23之第一端231。藉由饋入 點233，可將一饋入線（圖未示）電性連接至饋入點233， 以饋入電流，而使輻射元件21透過電流激發輻射能量，例 如接收或發射頻率約2.4GHz與5GHz的無線訊號。多頻天 線10另外在第一平面221的一末端設置寄生元件31，該 寄生元件31係與第一平面221垂直相連接。寄生元件31 可以增加多頻天線10的頻寬，其相關頻寬測量結果請參考 圖2B，圖2B顯示依據圖2A之多頻天線10在不同頻率之 φ 電壓駐波比（VSWR)變化。 此外，本創作之多頻天線10可設置在一電子裝置之殼 體上，而擴大多頻天線10的接地面積，以使得多頻天線 10提升效能。為了比較多頻天線10設置在電子裝置之殼 體上所產生之天線效能差異，以下特列舉兩個相關實施例 分別比較說明。 首先，請參考圖3A，圖3A係本創作之多頻天線10未 直接設置於電子裝置之殼體之金屬平面41上之示意圖。在 本實施例中，多頻天線10並未直接與金屬平面41相連接， 8 M307860 而是利用其第二平面222與一中間層（例如—塑膠平面4 相連接，塑膠平面42再與金屬平面41相連接，其相連接 的方式可以用螺絲或是其他方式結合。惟需注咅^是，。 3A只是示意本創作之多頻天線1〇並未直接與金屬平面二 相連接，因此多頻天線10透過塑膠平面42的連接方式也 可以其他間接連接方式來代替。圖3 B顯示此種間接^接 方式之多頻天線10的效能。如圖3 B所示，在本實施例 中’多頻天線10在低頻2.4GHz〜2.5GHz時的效能約為 φ ’在高頻5.15GHz〜5.85GHz時的效能約為40%。相較 於圖1B之先前技術之天線90，本創作之多頻天線1〇間接 連接至金屬平面41時的效能略優於先前技術之天線90的 效能。 接著，請參考圖4A，圖4A係本創作之多頻天線直接 設置於金屬平面41上之示意圖。在本實施例中，多頻天線 10係直接設置於一金屬平面41上，並利用第二平面222 與金屬平面41嵌合以擴大多頻天線1〇的接地面積，進而 φ 增加多頻天線1〇的頻寬。此處需注意的是，第二平面222 可以用螺絲或焊接專方式與金屬平面41結合，本創作並不 限制其必須利用嵌合方式。圖4 B顯示此種直接連接方式 之多頻天線10的效能。如圖4 B所示，多頻天線10在低 頻2.4GHz〜2.5GHz時的效能約為約60%，在高頻 5.15GHz〜5.85GHz時的欵能約為5〇%。相較於圖1B之先 前技術之天線90以及圖3b中多頻天線10間接與金屬平面 41連接時的效能，本發明之多頻天線1〇與金屬平面41直 接接觸所測得的效能明顯地優於先前技術之多頻天線90 M307860 及多頻天線10與金屬平面41間接接觸的效能。 接著，請參考本創作之多頻天線1〇應用於電子裝置之 貫施例。請參考圖5及圖6關於本創作之多頻天線1 〇設置 於電子裝置50之殼體51的實施例。在此實施例中，電子 裝置50為一桌上型電腦，但本創作並不以此為限。如圖5 及圖6所示，多頻天線10係利用第二平面222嵌合於殼體 51上，而把殼體51當作是多頻天線1〇接地端的一部分， 以擴大多頻天線10的接地面積，因而增加效能。M307860 捌, new description [New technical field] This creation is about the creation of a multi-frequency antenna, especially for the creation of a multi-frequency antenna with parasitic components and an enlarged ground contact area. [Prior Art] With the development of wireless communication technology, many electronic devices that provide wireless communication functions have appeared on the market today. In addition to mobile phones and mobile communication products such as notebook computers, desktop computers also use wireless communication technology to transmit information. Meanwhile, in order to make these electronic devices have wireless communication functions, the prior art has disclosed antennas suitable for these electronic devices. In the prior art, such an electronic device usually externally connects to a device such as a wireless network card for transmitting a wireless signal, but when the user wants to use the wireless network communication, an extra charge is incurred. Purchase a wireless network card. ® The prior art also discloses a related antenna. Referring now to Figure 1A, prior art antenna 90 has a radiating element 91, a connecting element 92 and a grounding element 93. The connecting member 92 has a first end 921 and a second end 922; and the first end 921 of the connecting member 92 is connected to the radiating element 91, and the second end 922 is connected to the grounding member 93. Next, please refer to FIG. 1B for the performance of the different frequencies measured by the antenna 90 of the prior art. As shown in FIG. 1B, the performance of the prior art antenna 90 is about 50% at a low frequency of 2.4 GHz to 2.5 GHz, and the performance of the prior art antenna 9 仅 is only about 5 M307860 at a high frequency of 5.15 GHz to 5.85 GHz. It is 40%. Therefore, the inventor of the present invention thought that if an antenna having better performance than the prior art can be designed and applied to an electronic device such as a desktop computer, the cost required for establishing a wireless communication system can be saved. [New Content] • The main purpose of this creation is to provide a multi-frequency antenna and its application, so that the multi-frequency antenna can improve bandwidth and radiation efficiency. To achieve the above objectives, the present invention provides a multi-frequency antenna comprising a Koda firing element, a grounding element, a connecting element, and a parasitic element. The connected reading includes a first end and a second end. The grounding element includes a first plane, a 0.00th plane, and a third plane, and the third plane is directly connected to the first plane and the second w plane, respectively, such that the overall cross section of the grounding element is substantially slightly. The curved shape increases the height between the raised surfaces of the spokes, so that the multi-frequency area of the present creation is larger than the end of the surface of the first plane and the grounding area of the antenna. . This creation is additionally in the first-connection to increase the bandwidth of the C-parasitic antenna and the parasitic element perpendicular to the first plane. On the plane, the antenna can be directly or indirectly placed on the grounding area of a metal, and the + plane is fitted with the gold surface to increase the multi-frequency antenna and increase the bandwidth of the multi-frequency antenna. Furthermore, the second plane M307860 can be combined with the metal plane by other fitting means such as screws or welding. Furthermore, in the embodiment of the present invention, the multi-frequency antenna can be disposed on the housing of the electronic device. The housing of the electronic device can be used as the grounding of the multi-frequency antenna. The embodiment can also be increased or decreased according to different requirements. The number of multi-frequency antennas or the location of the multi-frequency antenna is changed. Due to the novel construction of this creation, it can provide industrial use, and it has improved efficiency. Therefore, it applies for a new type of patent according to law. [Embodiment] The above and other objects, features and advantages of the present invention will become more apparent and <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; The formula is described in detail below. Please refer to FIG. 2A for the multi-frequency antenna 10 of the present invention. As shown in FIG. 2A, the multi-frequency antenna 1 is a flat inverted-F antenna (PIFA). The multi-frequency antenna 10 includes a radiating element 21, a grounding element 22, and a connecting element ( Connecting element) 23 and a parasitic element 31. The connecting member 23 includes a first end 231 and a second end 232. The grounding element 22 includes a first plane 221, a second plane 222, and a third plane 223, and the third plane 223 is perpendicularly connected to the first plane 221 and the second plane 222, respectively, such that the overall cross section of the grounding element 22 is substantially A three-dimensional structure of a 匸 shape. Moreover, the surface area of the second plane 222 is larger than the surface area of the first plane 221 to increase the ground contact area of the multi-frequency antenna 10. The radiating element 21 may be a strip-shaped metal plate that radiates radiant energy through a current when current is fed. 7 M307860 As shown in FIG. 2A, the first end 231 of the connecting element 23 is electrically connected to the radiating element 21, and the second end 232 is electrically connected to the first plane 221 of the grounding element 22. Further, the first end 231 and the radiating element 21 are vertically connected to each other, and the second end 232 and the first plane 221 are perpendicularly connected to each other to form the multi-frequency antenna 10 to form a three-dimensional structure. And because of the curved shape of the grounding member 22, the height between the radiating element 21 and the second plane 222 is increased compared to the prior art of Fig. 1A, and the multi-frequency antenna 10 can be made to increase the radiation efficiency. The connecting element 23 comprises a feeding point φ 233 which is slightly convex to the first end 231 of the connecting element 23. By feeding point 233, a feed line (not shown) can be electrically connected to the feed point 233 to feed current, and the radiating element 21 can be used to excite the radiant energy through the current, for example, the receiving or transmitting frequency is about 2.4 GHz. With 5GHz wireless signal. The multi-frequency antenna 10 is additionally provided with a parasitic element 31 at one end of the first plane 221, which is connected perpendicularly to the first plane 221. The parasitic element 31 can increase the bandwidth of the multi-frequency antenna 10. For the correlation bandwidth measurement result, please refer to FIG. 2B. FIG. 2B shows the φ voltage standing wave ratio (VSWR) variation of the multi-frequency antenna 10 according to FIG. 2A at different frequencies. In addition, the multi-frequency antenna 10 of the present invention can be disposed on a casing of an electronic device to expand the grounding area of the multi-frequency antenna 10, so that the multi-frequency antenna 10 can improve performance. In order to compare the differences in antenna performance of the multi-frequency antenna 10 disposed on the casing of the electronic device, the following two comparative examples are respectively described. First, please refer to FIG. 3A. FIG. 3A is a schematic diagram of the multi-frequency antenna 10 of the present invention not directly disposed on the metal plane 41 of the housing of the electronic device. In this embodiment, the multi-frequency antenna 10 is not directly connected to the metal plane 41, but the second plane 222 is connected to an intermediate layer (for example, the plastic plane 4, and the plastic plane 42 is further connected to the metal plane). 41 phase connection, the way of connecting can be combined by screws or other means. Only need to note ^ is, 3A is just to illustrate the creation of the multi-frequency antenna 1〇 is not directly connected to the metal plane two, so multi-frequency The connection manner of the antenna 10 through the plastic plane 42 can also be replaced by other indirect connection methods. Figure 3B shows the performance of the multi-frequency antenna 10 of the indirect connection mode. As shown in Fig. 3B, in the present embodiment, The performance of the frequency antenna 10 at a low frequency of 2.4 GHz to 2.5 GHz is about φ 'the performance at a high frequency of 5.15 GHz to 5.85 GHz is about 40%. Compared with the antenna 90 of the prior art of FIG. 1B, the multi-frequency of the present creation The performance of the antenna 1〇 indirectly connected to the metal plane 41 is slightly better than that of the prior art antenna 90. Next, please refer to FIG. 4A, which is a schematic diagram of the multi-frequency antenna of the present invention directly disposed on the metal plane 41. In this embodiment, multi-frequency The antenna 10 is directly disposed on a metal plane 41, and is mated with the metal plane 41 by the second plane 222 to expand the grounding area of the multi-frequency antenna 1 ,, thereby increasing the bandwidth of the multi-frequency antenna 1 。. It is noted that the second plane 222 can be joined to the metal plane 41 by screws or soldering. This creation does not limit the need to utilize the mating means. Figure 4B shows the performance of the multi-frequency antenna 10 of this direct connection. As shown in FIG. 4B, the multi-frequency antenna 10 has a performance of about 60% at a low frequency of 2.4 GHz to 2.5 GHz, and a power of about 5% at a high frequency of 5.15 GHz to 5.85 GHz. Compared with FIG. 1B. The performance of the prior art antenna 90 and the multi-frequency antenna 10 of FIG. 3b being indirectly connected to the metal plane 41, the measured performance of the multi-frequency antenna 1〇 of the present invention in direct contact with the metal plane 41 is significantly superior to the prior art. The effectiveness of the multi-frequency antenna 90 M307860 and the multi-frequency antenna 10 in indirect contact with the metal plane 41. Next, please refer to the multi-frequency antenna 1 of the present invention for application in an electronic device. Please refer to FIG. 5 and FIG. Multi-frequency antenna 1 〇 set in electronic equipment An embodiment of the housing 51 of the embodiment 50. In this embodiment, the electronic device 50 is a desktop computer, but the present invention is not limited thereto. As shown in FIG. 5 and FIG. 6, the multi-frequency antenna 10 is utilized. The second plane 222 is fitted to the housing 51, and the housing 51 is considered to be part of the grounding end of the multi-frequency antenna 1 to enlarge the grounding area of the multi-frequency antenna 10, thereby increasing the efficiency.
如圖5及圖6所示’本創作之多頻天線1〇可以依昭情 況，設置於殼體51的前方（如圖5所示）或是上方（如圖 6所不）。此外’殼體51上可以再用其他的裝置構造（圖 未不）來覆蓋多頻天線U)。再者，本實施例也可以依昭不 =1❹或減少多頻天線1〇的數量或改變多頻i線 10的狀位置’因此本創作並不以圖5及圖6所示之多頻 天線10的數量及裝設位置為限。圖7A至圖7C與圖8八至 圖8C士即顯示依據圖5之實施例，本創作之多頻天線 低頻:夺與咼頻時x-z、z_y與x_y平面之輻射場型。 最後，請參考圖9係本創作之電子裝置％ 示意圖。如圖9所示，當多頻天飨 糸、，先方塊 後，本創作可利用-條;二在，上之 饋入電流至“點233) 夕献線丨G(例如 η 、無綠虎核組52，以藉由盔妗 心虎权組52來處理多鼓線1()之崎 ，由…缘 訊號。如此-來’電子裝置50就可；由：:或接收 收或者傳送無線訊號到其他的震置、天線10接 通訊的目的。 回不h以達到無線 M307860 “上所陳，本創作無論就目的、手段及功效，在在均 顯示其迥異於習知技術之特徵，懇請貴審查委員明察， 早日賜准專利’俾嘉惠社會’實感德便。惟應注意的是， 上述諸多實施例僅係為了便於說明而舉例而已，本創作所 主張之權利範圍自應以申請專利範圍所述為準，而非僅限 於上述實施例。 【圖式簡單說明】 _ 圖1 A係先前技術之天線立體圖。 圖1B係依據圖1A，顯示其在不同頻率之效能。 圖2A係本創作之多頻天線立體圖 圖2B係依據圖2A，顯不其在不同頻率之電壓駐波比變化。 圖3A係本創作之多頻天線未直接設置於金屬平面上之示 意圖。 圖3 B係依據圖3A，顯示其在不同頻率之效能。 春圖4A係本創作之多頻天線直接設置於金屬平面上之示意 圖。 圖4B係依據圖4A，顯示其在不同頻率之效能 圖5係本創作之多頻天線設置於電子裂置之殼體前方之示 意圖。 圖6係本創作之多頻天線％^ $ 7和人琛叹置於電子裝置之殼體上方 意圖。 圖7Α、圖7Β與圖7C，#佑摅岡ς ^ U 你依據圖5之實施例，顯示其在低 頻日守Χ·Ζ、Z-y與χ-y平面之輻射場型。 M307860 圖8A、圖8B與圖8C，係依據圖5之實施例，顯示其在高 頻時x_z、z-y與x-y平面之輻射場型。 圖9係本創作之電子裝置之系統方塊示意圖。 【元件代表符號說明】As shown in Fig. 5 and Fig. 6, the multi-frequency antenna 1 of the present invention can be disposed in front of the casing 51 (as shown in Fig. 5) or above (as shown in Fig. 6). Further, other device configurations (not shown) may be used on the housing 51 to cover the multi-frequency antenna U). Furthermore, the present embodiment can also reduce the number of multi-frequency antennas 1〇 or change the position of the multi-frequency i-line 10 by using the number of multi-frequency antennas 1'. Therefore, the multi-frequency antenna shown in FIG. 5 and FIG. 6 is not used in this creation. The number of 10 and the installation location are limited. 7A to 7C and Figs. 8-8 to 8C show the multi-frequency antenna of the present invention. The low frequency: the radiation pattern of the x-z, z_y and x_y planes when the frequency is captured. Finally, please refer to FIG. 9 which is a schematic diagram of the electronic device % of the present creation. As shown in Figure 9, when multi-frequency antennas, after the first block, the creation can use - strip; second, the feed current to "point 233" 夕 丨 line 丨 G (such as η, no green tiger The core group 52 is configured to process the multi-drum line 1() by the helmet and the heart group 52. The electronic device 50 can be used to: receive or transmit wireless signals by: Go to other shocks, antenna 10 to communicate the purpose. Back to no h to reach the wireless M307860 "On the Chen, this creation, regardless of the purpose, means and efficacy, are showing their characteristics different from the conventional technology, please expensive The reviewer clearly observed that the patent “俾嘉惠社会” was granted as soon as possible. However, it should be noted that the above-mentioned many examples are for illustrative purposes only, and the scope of rights claimed in this creation is from the scope of patent application. The above description is not limited to the above embodiment. [Simplified illustration of the drawing] _ Figure 1A is a perspective view of the antenna of the prior art. Figure 1B shows its performance at different frequencies according to Figure 1A. The multi-frequency antenna stereogram is shown in Figure 2A according to Figure 2A. Figure 3A is a schematic diagram of the multi-frequency antenna of the present invention not directly disposed on the metal plane. Figure 3B shows its performance at different frequencies according to Figure 3A. Figure 4B shows the performance of the multi-frequency antenna at different frequencies according to Figure 4A. Figure 6 is the original multi-frequency antenna %^ $7 and the sigh placed above the casing of the electronic device. Figure 7Α, Figure 7Β and Figure 7C, #佑摅冈ς ^ U You implemented according to Figure 5. For example, it shows the radiation pattern of the low frequency Χ·Χ, Zy and χ-y planes. M307860 Fig. 8A, Fig. 8B and Fig. 8C show the x_z, zy at high frequency according to the embodiment of Fig. 5. The radiation field pattern with the xy plane. Figure 9 is a block diagram of the system of the electronic device of the present invention.
先前技術之天線90 連接元件92 第一端921 多頻天線10 接地元件22 第二平面222 連接元件23 第二端232 寄生元件31 塑膠平面42 殼體51 輻射元件91 接地元件93 第二端922 輻射元件21 第一平面221 第三平面223 第一端231 饋入點233 金屬平面41 電子裝置50 無線訊號模組52 12Prior art antenna 90 connection element 92 first end 921 multi-frequency antenna 10 ground element 22 second plane 222 connection element 23 second end 232 parasitic element 31 plastic plane 42 housing 51 radiating element 91 ground element 93 second end 922 radiation Element 21 First plane 221 Third plane 223 First end 231 Feed point 233 Metal plane 41 Electronic device 50 Wireless signal module 52 12