M399455 五、新型說明： 1 ! 【新型所屬之技術領域】 ί ! | 本創作係有關一種多頻天線結構，特別是一種可提供多種 共振模態之天線結構者。 Γ 【先前技術】 卜 ，. I 現今，無線通訊技術已應用於許多電子產品，如手機、筆 丨· 記型電腦、個人數位助理（PDA)、GPS衛星導航系統、電子 j 書閱讀器（E-bookreader)等。通常，為了美觀考量，會採用 隱藏式天線’如微帶天線、平面倒F型天線、平面螺旋天線等， 而將天線置於電子裝置之殼體内。 ί | 但，現今電子產品訴求輕薄之設計與多樣化的功能。因 I 此’如何於殼體有限的内部空間中，容納天線及繁複的電子構 | 件，是隱藏式天線設計的重要考量。尤其，無線通訊技術可能 I ® 使用不同的操作頻帶。舉例而言’無線區域網路(Wireless Local I - WLANk !EEE802.11n標準使用的工作頻段為 2.4〜2.4835GHz與5.150〜5.850GHz。若能以單一天線提供多 種共振模態，而滿足不同的操作頻段，將可有效利用有限的殼 體内部空間。M399455 V. New description: 1 ! [New technology field] ί ! | This creation is about a multi-frequency antenna structure, especially an antenna structure that can provide multiple resonant modes. Γ 【Prior Art】 Bu,. I Today, wireless communication technology has been applied to many electronic products, such as mobile phones, notebooks, personal computers (PDAs), GPS satellite navigation systems, electronic j-book readers (E -bookreader) and so on. Generally, for aesthetic reasons, a hidden antenna such as a microstrip antenna, a planar inverted F antenna, a planar spiral antenna, or the like is used, and the antenna is placed in the casing of the electronic device. ί | However, today's electronic products appeal to thin design and versatile features. Because of this, how to accommodate antennas and complicated electronic components in the limited internal space of the housing is an important consideration in the design of hidden antennas. In particular, wireless communication technologies may use different operating bands for I ® . For example, 'Wireless Local Area Network (Wireless Local I - WLANk! EEE802.11n standard operating frequency band is 2.4~2.4835GHz and 5.150~5.850GHz. If a single antenna can provide multiple resonant modes, it can meet different operations. The frequency band will make effective use of the limited internal space of the housing.
I ! 目此，如何在雜__計彡種共減態之天線 ，進而 ； 使天線之操作頻段符合無線通訊之需求，是天線設計時的重要 3 課題。 【新型内容】 有鑑於此’本創作之目的在於提供一種多頻天線結構。 本創作之多頻天線結構包含：接地部 地部，接收外部饋入訊號；第一輻射體，; ;;饋入段，相鄰於接 電連接饋入段，激發 項天線⑺構之第-共振模態，第二轄射體，激發多頻天線結I! In this case, how to make the antennas of the total attenuation in the hybrid __, and to make the operating frequency band of the antenna meet the requirements of wireless communication, is an important topic in antenna design. [New content] In view of this, the purpose of this creation is to provide a multi-frequency antenna structure. The multi-frequency antenna structure of the present invention comprises: a grounding part receiving an external feed signal; a first radiator;;; a feeding section adjacent to the power connection feeding section, and an excitation item antenna (7) Resonance mode, second directional emitter, excited multi-frequency antenna junction
迴路段，由第一匹配段延伸而電連接至第三匹配段之側邊。 較佳地，第一輻射體由垂直連接且同向彎折之三輻射段組 成，而與饋入段形成第一路徑。第一路徑用以激發第一共振模 態及第三共振模態。第一路徑之長度為第一共振模態的四分之 一波長及第三共振模態的二分之一波長。據此，提供三種共振 模態。 較佳地，多頻天線結構更包含第三輻射體，電連接饋入 端，由一輻射段組成，與饋入段形成第三路徑，而激發第四共 振模態。據此，提供四種共振模態。 本創作藉由迴路段設計，使得天線可延伸多個輕射體，進 4 M399455 而提供多個共振模態，滿足多種頻段需求。 有關本創作之較佳實施例及其功效，茲配合圖式說明如 後。 【實施方式】 以下舉出具體實施例以詳細說明本創作之内容，並以圖式 作為輔助說明。說明中提及之符號係參照圖式符號。 本創作提出之多頻天線結構由金屬構成，實質上可為印刷 電路板之導電層；或可為金屬件，例如以沖壓方式製成之金屬 件0 請參閱第1圖所示’係為本創作第一實施例之多頻天線結 構（以下間稱天線），包含接地部1、饋入段2、第一輕射體 3、第二輻射體4、匹配部5及迴路段6。 參閱第1圖所示，饋入段2相鄰於接地部1，用以接收外 部之饋入訊號。第一輻射體3電連接饋入段2，用以激發天線 之第一共振模態。第二輻射體4用以激發天線之第二共振模 態。 參閱第1囷所示’匹配部5電連接於饋入段2與第二輻射 體4之間。匹配部5包含第一匹配段5丨、第二匹配段52及第 二匹配段53。第一匹配段51電連接饋入段2 ,朝第一輻射體 3之反方向延伸。第二匹配段52電連接於第一匹配段51與接 5 M399455 地部1之間。第三匹配段53電連接第二匹配段52與第二輻射 體4之間。迴路段6由第一匹配段51延伸而電連接至第三匹 配段53之側邊。 於此，饋入段2之一端為饋入點21，用以電連接至外部 信號饋線（未示於圖中）之正端；而饋入段2之另一端電連接 至第一匹配段51。外部信號饋線之負端則電連接至接地部1。 據此’無線通訊機可透過外部信號饋線饋入信號至天線，而透 過天線將信號輻射出去。 並且，迴路段6與第二匹配段52及第三匹配段53形成二 條路徑’使電流自迴路段6與第一匹配段51間之連接處，經 其中一路徑流至第二輻射體4之末端，再透過另一路徑流至接 地部1，據此激發天線之第二共振模態。 請參閱第2圖所示，係為本創作第二實施例之示意圖。如 第一實施例之多頻天線結構，其中，第一輻射體3由垂直連接 且同向彎折之三輻射段組成，而與饋入段2形成第一路徑71。 第一路徑71用以激發天線之第一共振模態及第三共振模態。 並且，第一路徑71之長度為第一共振模態的四分之一波長及 第三共振模態的二分之一波長。 第二輻射體4由垂直連接且同向彎折之二輻射段組成，與 饋入段2及匹配部5形成第二路徑72，而激發天線之第二共 振模態。 6 M399455 請參閱第3圖所示，係為本創作第三實施例之示意圖。如 第-實施例之夕頻天線結構，更包含第三輕射體8，電連接於 饋入& 2並與饋入段2形成第王路徑？3,而激發天線之第四 共振模態。於此，第三輻射體8由-輻射段組成。且，第—輻 射體3與第三輻射體8電連接饋入段2之同一側邊。 於此’藉由調整第一輻射體3、第二輕射體4及第三輕射 . 豸8之寬度，_雖天狀阻抗，使天線之輻紐率達到最 佳化。 請參閱第4圖所示，係為本創作第三實施例之回饋損失 (ReturnLoss)圖。可見透過第一路徑71，激發天線之第一共 振模態A與第二共振模態c ;透過第二路徑72，激發天線之 第一共振模態B，透過第三路徑，激發天線之第四共振模態D。 於此’回綱失在.下’本實蝴之錢天線結構可涵蓋 850MHz至920MHz及L58GHz至2 22GHz的頻寬範圍。其藉 由第一路控之第三共振模態C增加第二共振模態B及第四共 振模態D的頻率涵蓋範圍。 综上所述’本創作提出之多頻天線結構經由迴路段6的設 计，使得天線可延伸多個輻射體，進而達到提供多個共振模態 之目的。 雖然本創作的技術内容已經以較佳實施例揭露如上，然其 並非用以限定本創作，任何熟習此技藝者，在不脫離本創作之 7 M399455 精神所作些許之更動與潤飾，皆應涵蓋於本劍作的範綠内 此本創作之保護範圍當視後附之申請專利範圍所界定者為準因 【圖式簡單說明】 第1圖為本創作第一實施例之示意圖。 第2圖為本創作第二實施例之示意圖。 第3圖為本創作第三實施例之示意圖。 第4圖為本創作第三實施例之回饋損失圖。 【主要元件符號說明】 1 :接地部 21 :饋入點 51 :第一匹配段 53 ·•第三匹配段 72 :第二路徑 B:第二共振模態 D:第四共振模態 2 :饋入段 3:第一輻射體 4 :第二輻射體 5 :匹配部 52 :第二匹配段 6 :迴路段 71 :第一路徑 73 ··第三路徑 8 :第三輻射體 A:第一共振模態 C:第三共振模態The loop segment extends from the first matching segment and is electrically connected to the side of the third matching segment. Preferably, the first radiator is composed of three radiating sections which are vertically connected and which are bent in the same direction, and form a first path with the feeding section. The first path is for exciting the first resonant mode and the third resonant mode. The length of the first path is one quarter of the wavelength of the first resonant mode and one half of the wavelength of the third resonant mode. Accordingly, three resonance modes are provided. Preferably, the multi-frequency antenna structure further comprises a third radiator electrically connected to the feed end, consisting of a radiating section, forming a third path with the feeding section, and exciting the fourth resonant mode. Accordingly, four resonance modes are provided. The design of the loop segment allows the antenna to extend multiple light emitters, and the 4 M399455 provides multiple resonant modes to meet multiple frequency requirements. The preferred embodiment of the present invention and its effects are described in conjunction with the drawings. [Embodiment] Hereinafter, specific embodiments will be described in detail to explain the contents of the present invention, and the drawings are used as an explanation. The symbols mentioned in the description refer to the schema symbols. The multi-frequency antenna structure proposed by the present invention is made of metal and can be substantially a conductive layer of a printed circuit board; or can be a metal part, for example, a metal part made by stamping. See FIG. The multi-frequency antenna structure (hereinafter referred to as an antenna) of the first embodiment is created, and includes a grounding portion 1, a feeding portion 2, a first light projecting body 3, a second radiator 4, a matching portion 5, and a loop portion 6. Referring to Figure 1, the feed section 2 is adjacent to the grounding portion 1 for receiving an external feed signal. The first radiator 3 is electrically connected to the feed section 2 for exciting the first resonance mode of the antenna. The second radiator 4 is used to excite the second resonant mode of the antenna. Referring to Fig. 1, the matching portion 5 is electrically connected between the feeding portion 2 and the second radiator 4. The matching section 5 includes a first matching section 5丨, a second matching section 52, and a second matching section 53. The first matching section 51 is electrically connected to the feed section 2 and extends in the opposite direction of the first radiator 3. The second matching segment 52 is electrically connected between the first matching segment 51 and the ground portion 1 of the M399455. The third matching section 53 is electrically connected between the second matching section 52 and the second radiator 4. The circuit segment 6 extends from the first matching segment 51 and is electrically connected to the side of the third matching segment 53. Here, one end of the feeding section 2 is a feeding point 21 for electrically connecting to a positive end of an external signal feeding line (not shown); and the other end of the feeding section 2 is electrically connected to the first matching section 51. . The negative terminal of the external signal feeder is electrically connected to the ground portion 1. According to this, the wireless communication device can feed the signal to the antenna through the external signal feeder, and radiate the signal through the antenna. Moreover, the loop segment 6 forms a second path with the second matching segment 52 and the third matching segment 53 to make a current from the junction between the loop segment 6 and the first matching segment 51, and flows to the second radiator 4 via one of the paths. The end, through another path, flows to the ground portion 1, thereby exciting the second resonant mode of the antenna. Please refer to FIG. 2, which is a schematic diagram of the second embodiment of the present creation. The multi-frequency antenna structure of the first embodiment, wherein the first radiator 3 is composed of three radiating sections which are vertically connected and which are bent in the same direction, and forms a first path 71 with the feeding section 2. The first path 71 is used to excite the first resonant mode and the third resonant mode of the antenna. Further, the length of the first path 71 is a quarter wavelength of the first resonance mode and a half wavelength of the third resonance mode. The second radiator 4 is composed of two radiating sections which are vertically connected and which are bent in the same direction, form a second path 72 with the feeding section 2 and the matching section 5, and excite the second resonant mode of the antenna. 6 M399455 Please refer to FIG. 3, which is a schematic diagram of a third embodiment of the present creation. The antenna antenna structure of the first embodiment further includes a third light emitter 8, electrically connected to the feed & 2 and forming a king path with the feed section 2? 3, while exciting the fourth resonant mode of the antenna. Here, the third radiator 8 consists of a radiation segment. Further, the first radiator 3 and the third radiator 8 are electrically connected to the same side of the feeding section 2. Here, by adjusting the widths of the first radiator 3, the second light projecting body 4, and the third light projecting 豸8, the antenna impedance is optimized even though the antenna impedance is _. Referring to Fig. 4, it is a returnLoss diagram of the third embodiment of the present invention. It can be seen that the first resonant mode A and the second resonant mode c of the antenna are excited through the first path 71; the first resonant mode B of the antenna is excited through the second path 72, and the fourth path is excited, and the fourth antenna is excited. Resonance mode D. The antenna structure of the real money can cover the bandwidth range of 850MHz to 920MHz and L58GHz to 2 22GHz. It increases the frequency coverage of the second resonant mode B and the fourth resonant mode D by the third resonant mode C of the first path. In summary, the multi-frequency antenna structure proposed by the present invention is designed via the loop section 6, so that the antenna can extend a plurality of radiators, thereby achieving the purpose of providing a plurality of resonance modes. Although the technical content of the present invention has been disclosed above in the preferred embodiment, it is not intended to limit the creation, and any skill and refinement made by those skilled in the art without departing from the spirit of 7 M399455 should be covered. The scope of protection of this creation by Fan Jian in this sword is subject to the definition of the patent application scope attached to it. [Simple description of the drawing] Figure 1 is a schematic diagram of the first embodiment of the creation. Figure 2 is a schematic view of the second embodiment of the creation. Figure 3 is a schematic view of a third embodiment of the creation. Fig. 4 is a diagram showing the feedback loss of the third embodiment of the present invention. [Main component symbol description] 1 : Grounding portion 21 : Feeding point 51 : First matching segment 53 • Third matching segment 72 : Second path B: Second resonant mode D: Fourth resonant mode 2 : Feed Ingress 3: First radiator 4: Second radiator 5: Matching portion 52: Second matching segment 6: Circuit segment 71: First path 73 · Third path 8: Third radiator A: First resonance Modal C: third resonant mode