M308517 八、新型說明： 【新型所屬之技術領域】 本創作涉及一種天線，尤其涉及一種組裝於手機等消費性電子產 品内部之三頻隱藏式天線。 【先前技術】 隨著當今移動通訊技術的迅速發展，手機的使用愈加普及，手機 的设計日漸要求輕薄精巧，因此，手機的天線結構由以往的外露於手 機外的螺旋式天線而發展出一種隱藏於手機内部的隱藏式天線。 習知技術提供的隱藏式天線多為單頻天線或雙頻天線。現在於手 機通訊領域之通訊系統電磁波訊號包括GSM900、DCS18〇〇及 PCS1900。然，習知單頻天線多適用於GSM9〇〇通訊系統之電磁波訊 號，或適用於GSM900及DCS 1800通訊系統之電磁波訊號，無法同時 適用於電磁波訊號為PCS1900之通訊系統，故，習知天線於三頻通訊 頻率不足之限制不能滿足當前手機之發展需要。 又，習知天線增益值較小不適用手機於遠距離訊號傳送及接收。 【新型内容】 本創作目的係針對上述習知技術之缺陷，提供一種三頻隱藏式天 線，可擴展天線通訊頻率至第三頻率，當其組裝於手機内時，使得手 钱收發訊號的頻f範圍增寬，同時可以使得手機的增益值增加，適用 5 M308517 於更遠距離的訊號收發。本創作三頻隱藏式天線包括天線本體，於天 線本體上形成有第一溝槽及第二溝槽，以形成第一分支與第二分支， 並在第一分支上設有饋入點，而第二分支上則設有接地點，且兩溝槽 之路徑長度並略為相等。 如上所述’本創作三頻隱藏式天線係借由天線本體來收發低頻電 磁波訊號（GSM900)，於本創作上開設的兩個溝槽，其中第一溝槽用 以收發南頻電磁波訊號（DCS1800)，由於兩溝槽之路徑長度略等，使 第二溝槽與第一溝槽可相互形成共振匹配，從而使得兩溝槽在收發電 磁波時共振，使得天線可收發的高頻電磁波的頻帶範圍增寬、增益值 增加，而可收發兩個不同頻寬的高頻電磁波（DCS18〇〇、 從而令隱藏式天線可收發三頻電磁波訊號者。 【實施方式】 為詳細說明本創作之技術内容、構造特徵、所達成的目的功效， 以下茲列舉實施例並配合圖式詳予說明。 請參閱第-圖，本創作王頻隱藏式天線卿係可採用橫向延伸之 矩形金屬板或軟性電路板製成’本實施例係採用矩形金屬板，其中， 該三頻隱献天線包括天線本體⑼，於天線切⑻上形成有第 -溝槽1G及第二溝槽2G，以形成第—分支3G與第二分支务兹藉由 第-溝槽H)、第：賴2〇將第—分支3()及第：分支4()於天線本體 6 M308517 6〇上間隔開。並在第一分支30上設有饋入點33，而第二分支40上則 設有接地點43 ’且兩溝槽1Q、2Q之路徑長度並略為相等。 第溝夺曰1 (H系開槽天線，包括位於三頻隱藏式天、線刚左側下 部並橫向延伸之橫向左溝槽12、自該橫向左溝槽12左端豎直向上延 伸之縱向左賴11及自雜向左溝槽12右端豎直向上延伸之縱向左 内槽13。橫向左溝槽12右端與縱向左_ 13下端連通，縱向左内槽 13上端封閉’縱向左溝槽u與三頻隱藏式天線觀之上邊緣齊平， 係為-開π端而與外界連通，即第—溝槽1〇為—端開口之開槽天線。 縱向左溝槽11長度、橫向左溝槽12長度及縱向左哺13之和大致等 於高頻電磁波四分之-波長，與高頻電磁波麵從而收發高頻通訊之 電磁波訊號。 第分支30位於第一溝槽10之外側，包括位於第一溝槽1〇之橫 向左溝槽I2下方之橫向左分支Μ及位於左溝槽⑴之縱向左溝槽n 左侧之縱向左分支32 ’縱向左分支32頂端為自由端，驗向左分支 32頂端與三麵藏式天線1〇〇上端齊平。饋入點％言曼置於縱向左分 支32之頂端，以與手機内部天線電路之訊號饋入源連接。 第二溝槽20亦為開槽天線，與第一溝槽1〇對稱且設置於本創作 二頻fe藏式天線100右側，包括位於三頻隱藏式天線1〇〇右側下部並 橫向延伸之橫向右溝槽22、自雜向右溝槽22右端豎直向上延伸之 M308517 縱向右溝槽2i及自橫向右溝槽η左端豎直向上延伸之縱向右内槽 23。橫向右溝槽20左端與縱向右内槽21下端連通，縱向右内槽u 上端封閉’、縱向右溝槽21與三頻隱藏式天線1〇〇之上邊緣齊平，係第 • 一溝槽20為^一端開口之開槽天線。 第二分支4〇位於第二溝槽2〇之外側，包括位於第二溝槽2〇之橫 向右溝槽22下方之橫向右分支41及位於第二溝槽2〇之縱向右溝槽 修21右侧之縱向右分支42，縱向右分支42頂端為自由端，該縱向右分 支42頂端與三頻隱藏式天線100上端齊平。接地點μ言免置於縱向右 刀支42之頂端上，連接至手機内部天線電路之接地端。 天線本體60係於矩形金屬板上開設第一溝槽1〇及第二溝槽如 而形成，第一分支30與第二分支40分別藉由第一溝槽1〇及第二溝槽 2〇於天線本體60上間隔開。天線本體6〇之電氣長度為低頻電磁波二 鲁分之一波長，與低頻電磁波諧振從而收發低頻通訊之電磁波訊號。 本創作二頻Ik藏式天線100用於通訊時，第一溝槽與高頻電磁 波諧振而收發DCS1800通訊系統之電磁波訊號，而當第二溝槽如於 第一溝槽10收發電磁波訊號時與第二溝槽2〇共振匹配，使得本創作 可收發電磁波訊號的高頻頻帶範圍增寬、增益值增加，從而可收發兩 個不同頻寬的高頻電磁波（DCS18O0、PCS1900)。 综上所述，本創作三頻隱藏式天線係藉由天線本體6〇來收發低頻 8 M308517 電磁波訊號，於本創作上·的兩個溝槽，其中第1槽用以收發 DCS1_通訊純之電磁波訊號，#第二溝槽與第1槽形成共振， 從而使得兩賴在收發電磁㈣共振，使得天線可收發的電磁波的高 •頻頻帶範圍增寬、增益值增加，進而可收發兩個不同頻寬的高頻電磁 -波（DCS1_、PCS1_)。而兩溝槽的設計可因應實際需要而做相互 替代，饋入點及接地點只需對稱的設置於本創作上即可。另本創作二 Φ頻隱藏式天線結構簡單，可採用金屬板或軟性電路板一體成型，便於 製造，同時方便組裝於手機内部。 【圖式簡單說明】 第一圖係本創作三頻隱藏式天線之示意圖。 【主要元件符號說明】 三頻隱藏式天線 100 第一溝槽 10 縱向左溝槽 11 橫向左溝槽 12 縱向左内槽 13 第二溝槽 20 縱向右溝槽 21 橫向右溝槽 22 縱向右内槽 23 第一分支 30 橫向左分支 31 縱向左分支 32 饋入點 33 第二分支 40 橫向右分支 41 縱向右分支 42 M308517 60 接地點 43 天線本體M308517 VIII. New Description: [New Technology Field] This creation relates to an antenna, and more particularly to a tri-band hidden antenna assembled in a consumer electronic product such as a mobile phone. [Prior Art] With the rapid development of mobile communication technology, the use of mobile phones has become more and more popular, and the design of mobile phones has become increasingly demanding. Therefore, the antenna structure of mobile phones has developed a spiral antenna that has been exposed outside the mobile phone. A hidden antenna hidden inside the phone. The hidden antennas provided by the prior art are mostly single frequency antennas or dual frequency antennas. The electromagnetic wave signals of communication systems currently in the field of mobile communication include GSM900, DCS18 and PCS1900. However, the conventional single-frequency antenna is more suitable for the electromagnetic wave signal of the GSM9〇〇 communication system, or the electromagnetic wave signal suitable for the GSM900 and DCS 1800 communication system, and cannot be applied to the communication system of the electromagnetic wave signal PCS1900 at the same time. Therefore, the conventional antenna is The limitation of the frequency of tri-band communication cannot meet the development needs of current mobile phones. Moreover, the conventional antenna gain value is small and does not apply to the long-distance signal transmission and reception of the mobile phone. [New content] The purpose of this creation is to provide a tri-band hidden antenna that can expand the antenna communication frequency to the third frequency when it is assembled in the mobile phone, so that the frequency of the money transmission and reception signal is f The range is widened, and the gain value of the mobile phone can be increased at the same time, and the 5 M308517 can be used for transmitting and receiving signals at a longer distance. The present invention has a three-frequency hidden antenna including an antenna body, and a first trench and a second trench are formed on the antenna body to form a first branch and a second branch, and a feeding point is provided on the first branch, and The second branch is provided with a grounding point, and the paths of the two grooves are slightly equal in length. As described above, the original three-frequency hidden antenna transmits and receives low-frequency electromagnetic wave signals (GSM900) through the antenna body, and two trenches are created in the present invention, wherein the first trench is used for transmitting and receiving south frequency electromagnetic wave signals (DCS1800). Because the path lengths of the two trenches are slightly equal, the second trench and the first trench can form a resonance matching with each other, so that the two trenches resonate when transmitting and receiving electromagnetic waves, so that the frequency band of the high-frequency electromagnetic wave that the antenna can transmit and receive The widening and gain value increase, and two high-frequency electromagnetic waves of different bandwidths can be transmitted and received (DCS18〇〇, so that the hidden antenna can transmit and receive three-frequency electromagnetic wave signals. [Embodiment] To explain the technical content of the creation in detail, The structural features and the achieved effects are listed below with reference to the embodiments and the drawings. Please refer to the figure--, the creation of the king-frequency hidden antenna can be used to extend the rectangular metal plate or flexible circuit board. In this embodiment, a rectangular metal plate is used, wherein the tri-band hidden antenna includes an antenna body (9), and a first groove 1G and a second are formed on the antenna cut (8). The trench 2G is formed to form the first branch 3G and the second branch by the first trench H), the first branch 3 () and the first branch 4 () to the antenna body 6 M308517 6 The cockroaches are spaced apart. A feed point 33 is provided on the first branch 30, and a ground point 43' is provided on the second branch 40 and the path lengths of the two trenches 1Q, 2Q are slightly equal. The first groove is 1 (H series slotted antenna, including a horizontal left groove 12 located on the left side of the tri-band hidden sky, the left side of the line and extending laterally, and a vertical left line extending vertically from the left end of the horizontal left groove 12 11 and a longitudinal left inner groove 13 extending vertically upward from the right end of the left groove 12. The right end of the horizontal left groove 12 communicates with the lower left 133 lower end, and the upper left end of the longitudinal left inner groove 13 is closed 'longitually left groove u and three The upper edge of the frequency concealed antenna is flush, and is connected to the outside by the opening of the π end, that is, the first groove 1 is a slotted antenna with an open end. The length of the left left groove 11 and the horizontal left groove 12 The sum of the length and the longitudinal left feed 13 is substantially equal to the high frequency electromagnetic wave quarter-wavelength, and the high frequency electromagnetic wave surface transmits and receives the electromagnetic wave signal of the high frequency communication. The first branch 30 is located on the outer side of the first trench 10, including the first trench The lateral left branch 下方 below the lateral left groove I2 of the groove 1 纵向 and the longitudinal left branch 32 ′ at the left side of the left vertical groove n of the left groove (1) are the free ends, and the top of the left branch 32 is the inspection. It is flush with the upper end of the three-sided Tibetan antenna. The second trench 20 is also a slotted antenna, which is symmetric with the first trench and is disposed in the original two-frequency fe The right side of the antenna 100 includes a lateral right groove 22 located at the lower right side of the triax concealed antenna 1 并 and extending laterally, and a M308517 longitudinal right groove 2i extending from the right end of the right-to-right groove 22 and extending from the horizontal right a longitudinal right inner groove 23 extending vertically upward from the left end of the groove η. The left end of the horizontal right groove 20 communicates with the lower end of the longitudinal right inner groove 21, the upper right end of the longitudinal right inner groove u is closed, the longitudinal right groove 21 and the tri-frequency hidden antenna The upper edge of 1〇〇 is flush, and the first groove 20 is a slotted antenna with one end open. The second branch 4〇 is located on the outer side of the second groove 2〇, including the lateral direction of the second groove 2〇 a lateral right branch 41 below the right groove 22 and a longitudinal right branch 42 on the right side of the longitudinal right groove repair 21 of the second groove 2, the top end of the longitudinal right branch 42 is a free end, and the top right side of the longitudinal right branch 42 is three The upper end of the frequency concealed antenna 100 is flush. The grounding point is free from vertical The top end of the right knife holder 42 is connected to the ground end of the internal antenna circuit of the mobile phone. The antenna body 60 is formed by forming a first trench 1 and a second trench on the rectangular metal plate, and the first branch 30 and the second branch are formed. The branch 40 is spaced apart from the antenna body 60 by the first trench 1 〇 and the second trench 2, respectively. The electrical length of the antenna body 6 is one wavelength of the low frequency electromagnetic wave, and is resonant with the low frequency electromagnetic wave to transmit and receive the low frequency. Electromagnetic wave signal of communication. When the second-frequency Ik Tibetan antenna 100 is used for communication, the first groove resonates with the high-frequency electromagnetic wave to transmit and receive the electromagnetic wave signal of the DCS1800 communication system, and when the second groove is like the first groove 10 When the electromagnetic wave signal is transmitted and received, the second groove 2〇 is resonantly matched, so that the high frequency band range of the electromagnetic wave signal can be transmitted and received, and the gain value is increased, so that two high frequency electromagnetic waves of different bandwidths can be transmitted and received (DCS18O0, PCS1900). . In summary, the created three-frequency hidden antenna transmits and receives the low-frequency 8 M308517 electromagnetic wave signal through the antenna body 6〇. In the two grooves of the creation, the first slot is used for transmitting and receiving DCS1_ communication pure The electromagnetic wave signal, the second groove forms a resonance with the first groove, so that the two electrodes transmit and receive electromagnetic (four) resonance, so that the high frequency band range of the electromagnetic wave that the antenna can transmit and receive is widened, the gain value is increased, and two different signals can be transmitted and received. Bandwidth high frequency electromagnetic-wave (DCS1_, PCS1_). The design of the two grooves can be replaced by each other according to actual needs, and the feeding point and the grounding point need only be symmetrically arranged on the creation. In addition, the creation of the Φ frequency concealed antenna is simple in structure, and can be integrally formed by using a metal plate or a flexible circuit board, which is convenient for manufacturing and convenient to be assembled inside the mobile phone. [Simple description of the figure] The first picture is a schematic diagram of the created three-frequency hidden antenna. [Main component symbol description] Tri-band hidden antenna 100 First groove 10 Longitudinal left groove 11 Horizontal left groove 12 Longitudinal left inner groove 13 Second groove 20 Longitudinal right groove 21 Horizontal right groove 22 Longitudinal right inside Slot 23 First branch 30 Lateral left branch 31 Longitudinal left branch 32 Feed point 33 Second branch 40 Lateral right branch 41 Longitudinal right branch 42 M308517 60 Ground point 43 Antenna body