M397043 五、新型說明： 【新型所屬之技術領域】 本創作係關於一種天線之設計，特別是關於―種piFA天線以 及迴圈天線所組成之多頻道之夭線結構改良。 【先前技術】 近年來’隨著科技的進步錢通訊產品的軸發產，使得行 動電話制費性電子產品已逐漸普及，^且行動電㈣功能也從 傳統的單純敝以及接收電話延伸至今日可以上糊覽網頁以及 收發電子信件。 而現今的行鱗話體積絲越小，棚此使得行動電話的天 線隨著體積馳小崎藏於行純話之t ;此外，現有的天線技 術也從傳統的單頻天線發展至多頻天線。 為使天線的微小化技術更上層樓，近年來更發展出倒F形天 線(Planar Inverted_F Antenna，piFA)的架構，使天線的操作長 度能夠從-般共振頻率辭波長（λ/2)賴到1/4波長，所以能 大中田降低天線的面積。再加上平面天線本身具有低高度⑽ profile)的獅’因而能達聰藏天線(hidde_t_a)的目的。 在中華民國專利公告第_236號專利案中揭示了 一種多 頻倒F形天線’包括—幅射元件、接地元件及—饋人元件。該幅 射兀件係由-共用幅射元件、—高頻幅射元件及_低頻幅射元件 組成’該向頻幅射元件與低頻幅射元件間形成有一几形開槽。該 M397043 接地元件係與該共用幅射元件一側邊電性連結；該饋入元件具有 一與該高頻幅射元件一側電性連結之帶狀體。該接地元件上具有 一接地端，該接地端一側彎折延伸一倒L形接地片。該倒L形接 地片一端與共用幅射元件電性連結，使該倒L形接地片電性連結 在接地端與饋入元件之間。該倒L形接地片引起的環路表面電流 可增加此天線工作頻率的頻寬，使得此天線能夠在多頻率下得到 覓頻效果，進而提昇頻寬的利用率；因此本發明之多頻倒F形天 線可適合使用於智慧型手機類的行動通訊設備。 另外，在中華民國專利公告號第1293215號之一種雙頻倒f 形天線，其包含：一接地面，一具有彎折結構之不對稱τ形金屬 臂，位於該接地面之該上方邊緣附近；一短路金屬臂，其形狀大 致為一倒L形，用以將該不對稱了形金屬臂電氣連接至該地面； 及一饋入同軸傳輸線，用以傳輸訊號。本發明天線可藉由彎折結 構達成尺寸縮小，適合内藏於通訊產品中，並涵蓋無線區域網路 (WLAN . Wireless Local Area Network)2.4GHz(2. 4-2· 484GHz)及 5GHz(5. 15-5. 35, 5· 725-5. 875GHz)頻帶的頻寬要求。 然而，上述所揭示之專利案中，其僅僅是利用倒F形天線達 到提昇頻寬的效果，而且在使用上必需結合於印刷電路板以進行 接地，因此在使用上仍有待改良。 由此可見，習知的天線所衍生之問題及不足，實非—良善之 設計者，而亟待加以改良。 本案創作人鑑於上述天線所衍生的各項問題及不足，乃亟思 、終於成功研發完 力以改良_ ’並經多年苦^孤t旨潛心研究後 成本件多顺之m結構改良。 【新型内容】 本創作之-目的岐提供-❹頻狀天觀構改良，將 天線與迴圈天線、組成多頻道之天線，以達到多頻段之特性。 本創作之另-目的即是提供一種多頻段之天線結構改良，藉 本創作將接地端與第二輻射端結合，以改良傳統必須結合於印 刷電路板進行接地所造成的不便。 可達成上述創作目的之多頻段之天線結構改良，包括一第一 轄射端以及-第二_射端H射職由pifa天線與迴圈天線 所7成，且第一辕射端具有一第一頻段、一第二頻段以及一第三 頻段，並在該迴圈天線之一預定位置形成有一饋入點，其中，第 一幸虽射端係為接地端。 經由本創作所採用之技術手段，由於本創作係由p肌天線與 迴圈天線顺成之㈣道天線，耻，在使用上可以具多頻道之 特性，且本創作之接地端無需接合於電路板上進行接地，因此產 品在應用端上會有較多擺放位置之選擇。 【實施方式】 為使責審查委員方便瞭解本創作之其他特徵内容與優點， 及其所達成之功效能夠更為顯現，雜本創作配合關，詳細說M397043 V. New description: [New technical field] This creation is about the design of an antenna, especially the multi-channel squall structure improvement of the piFA antenna and the loop antenna. [Prior Art] In recent years, with the advancement of technology, the axis of money communication products has been produced, making mobile phone-made electronic products more and more popular, and the mobile power (4) function has also been extended from the traditional simple and receiving telephones. You can paste the web page and send and receive e-mails. The smaller the volume of the current scales, the more the mobile phone's antennas are hidden in the pure language. In addition, the existing antenna technology has evolved from traditional single-frequency antennas to multi-frequency antennas. In order to make the antenna miniaturization technology go up to the next level, in recent years, the architecture of the Planar Inverted_F Antenna (piFA) has been developed, so that the operating length of the antenna can be determined from the wavelength of the ordinary resonant frequency (λ/2). 1/4 wavelength, so you can reduce the area of the antenna. In addition, the lion of the planar antenna itself has a low height (10) profile and thus can achieve the purpose of the Hidden_t_a antenna. A multi-frequency inverted-F antenna [includes] a radiating element, a grounding element, and a feeding element is disclosed in the Patent Publication No. 236 of the Republic of China. The radiating element is composed of a common radiating element, a high frequency radiating element and a low frequency radiating element. A plurality of slots are formed between the frequency radiating element and the low frequency radiating element. The M397043 grounding component is electrically connected to one side of the common radiating element; the feeding component has a strip body electrically connected to one side of the high frequency radiating element. The grounding element has a grounding end, and the grounding end is bent to extend an inverted L-shaped grounding piece. One end of the inverted L-shaped grounding piece is electrically connected to the common radiating element, and the inverted L-shaped grounding piece is electrically connected between the grounding end and the feeding element. The loop surface current caused by the inverted L-shaped grounding strip can increase the bandwidth of the operating frequency of the antenna, so that the antenna can obtain the frequency-frequency effect at multiple frequencies, thereby improving the utilization of the bandwidth; therefore, the multi-frequency of the present invention The F-shaped antenna can be used in mobile communication devices for smart phones. In addition, a dual-frequency inverted f-shaped antenna of the Republic of China Patent Publication No. 1293215 includes: a ground plane, an asymmetric τ-shaped metal arm having a bent structure, located near the upper edge of the ground plane; a shorted metal arm having a substantially inverted L shape for electrically connecting the asymmetric metal arm to the ground; and a feed into the coaxial transmission line for transmitting signals. The antenna of the present invention can be reduced in size by a bent structure, and is suitable for being embedded in a communication product, and covers a wireless local area network (WLAN. Wireless Local Area Network) 2.4 GHz (2.4-2 484 GHz) and 5 GHz (5) 15-5. 35, 5· 725-5. 875 GHz) Bandwidth requirements for the band. However, in the above-mentioned patents, it is only an effect of using an inverted-F antenna to achieve a lifting bandwidth, and it is necessary to be bonded to a printed circuit board for grounding in use, and therefore there is still room for improvement in use. It can be seen that the problems and deficiencies derived from the conventional antennas are not the designers of the good, but need to be improved. In view of the problems and deficiencies arising from the above-mentioned antennas, the creators of this case were the ones who finally succeeded in research and development to improve _ ’ and after many years of painstaking research, the cost structure was improved. [New Content] The purpose of this creation is to provide a multi-band antenna with an antenna and a loop antenna to form a multi-channel antenna. Another object of the present invention is to provide a multi-band antenna structure improvement by combining the grounding end with the second radiating end to improve the inconvenience caused by the conventional connection to the printed circuit board for grounding. The antenna structure improvement of the multi-band which can achieve the above-mentioned creation purpose includes a first apex end and a second _ shot end, which is composed of a pifa antenna and a loop antenna, and the first spoke end has a first a frequency band, a second frequency band and a third frequency band, and a feed point is formed at a predetermined position of the loop antenna, wherein the first end is the ground end. Through the technical means adopted by this creation, since the creation is made up of a p-muscle antenna and a loop antenna, the antenna can be multi-channel in use, and the ground end of the creation does not need to be connected to the circuit. The board is grounded, so the product has more options for placement on the application side. [Embodiment] In order to make the review committee easy to understand the other features and advantages of this creation, and the effect achieved by it, it can be more obvious.