M420060 五、新型說明： 【新型所屬之技術領域】 本創作涉及通信設備領域’尤其涉及一種體積有限拉<滿 足各種通訊標準要求的多頻天線。 【先前技術】 隨著高科技通訊產業的蓬勃發展，移動式通訊應用越來越 廣泛，尤其4G通訊越來越普及，因此，對於移動通訊裝置例 如手機和筆記型電腦等的天線使用頻段需求越來越高。 然而隨著移動通訊的小型化發展，尤其是手機等通訊裝置 的小型化，使得其内置天線體積受限，又由於移動通訊裝置在 使用時經常會導致天線產生不同強度的共振偏移，這種共振頻 率偏移必須通過帶寬補償，即實際天線的帶寬需大於設計帶 寬，但是增加帶寬往往需要增加天線中輻射區域的面積，那麼 怎麼在有限的空間下製作多頻天線，以滿足各種通訊標準要 求’是本領域技術人員的所需解決的問題。 因此，急需一種體積小並可滿足各種通訊標準要求的多頻 印刷天線。 【新型内容】 本創作的目的在於針對上述現有技術的不足提供一種體 積有限並可滿足各種通訊標準要求的多頻天線。 為實現上述目的’本創作提供一種多頻天線，用於接收和 發射多個不同頻帶的電礤波信號，所述多頻天線包括基板及形 成於基板的正面上的導電層，所述導電層包括饋入端、位於饋 入端鄰側的接地端、沿饋入端向左後方廷伸並控制第一頻帶的 第一高頻部、沿饋入端向右後方延伸並控制第二頻帶的第二高 頻部以及沿饋入端向第二高頻部右後方彎折延伸並控制第三 3 M420060 頻帶和第四頻帶的低頻部，低頻部與第二高頻部之間形成第一 間隙，所述第一間隙呈L形。 如上所述，本創作的低頻部與高頻部之間具有L形的第一 間隙，所述第一間隙有效加寬了多頻天線中高頻的頻帶，使得 該多頻天線可滿足多種制式的通訊標準要求》 【實施方式】 為詳細說明本創作的技術内容、構造特徵、所實現目的及 效果’以下結合實施方式並配合附圖詳予說明。 參考第一圖和第二圖’本創作多頻天線，用於接收和發射 四個不同頻帶的電磁波信號，其包括基板（圓未示）及形成於基 板的正面上的導電層1，導電層1外覆蓋有一層黑色的覆蓋膜 (圖未示），基板的背部貼有背塑（圖未示）。 繼續參考第一圖和第二圖，所述導電層〗包括饋入端u、 位於饋入端11鄰側的接地端12和輻射部（圖中未標示），所述 輻射邛包括沿饋入端11向左後方延伸形成的第一高頻部2〇、 沿饋入端11向右後方延伸形成的第二高頻部31和低頻部32, 所述低頻部32彎折分佈在第二高頻部31的右後方並與第二高 頻部31之間形成第—間隙34，第—間隙34呈1形，第一高 頻部20控制第一頻帶’第二高頻部31㈣第二頻帶，低頻部 32控制第三頻帶和^鮮射部均為義層，接 地部12和饋入端u均為鍍金層。 八中所述第一頻帶的頻率範圍為185〇〜199〇MHz，第 =帶的頻率範_ 171G〜聊廳，第三頻帶的頻率範圍 894MHZ ’第四頻帶的頻率範圍為880〜960MHz。 具體地，繼續參考第—圖和第二圖，所述第二高頻部η —狀的矩形’第~~商頻部20的寬度大於低頻部32的寬 、等一 ' 二第_Ί尚頻部31的寬度大於第一高頻部20的寬度。粗短狀 —同頻部31有效加寬了多頻天線1〇〇中高頻的頻帶。 較佳者，繼續參考第一圖和第二圖，所述低頻部32的末 端向第二古此〜 臂3 、阿頸°卩31方向延伸形成與第二高頻部31相對的補償 補償臂33有效加寬了多頻天線丨〇〇中高頻的頻帶。 -、體地，參考第一圖和第二圖，所述補償臂33寬度是低 頻部32官_ " 見度的二倍。在本實施例中，低頻部32的寬度為 mm補償臂的寬度為3mm，誤差範圍為±01mm。 ^較佳者，參考第一圖和第二圖，所述第一高頻部2〇包括 =饋入端11向後延伸形成的第一高頻輻射臂21和沿第一高頻 輻射臂21向左彎折延伸形成的第二高頻輻射臂22，具體地， 第一尚頻輻射臂22向下垂直彎折延伸再向左彎折延伸並彎曲 弧形使得第二南頻輻射臂22與第一高頻輻射臂21之間形 成半弧形的第二間隙24。半弧形的第二間隙24有效加寬了多 頻天線中高頻的頻帶。 具體地，繼續參考第一圖和第二圖，所述第二高頻輻射臂 22的末端向右彎折延伸形成第三高頻輻射臂23，第二高頻輻 射臂22向下彎折後，第三高頻輻射臂23部分向右垂直彎折， 第二高頻輻射臂23有效加寬了多頻天線中高頻的頻帶。其 中，第二尚頻輻射臂23的寬度大於第二高頻輻射臂22。 參考第一圖和第二圖，工作時，高低頻段的信號從饋入端 11進入與饋入端U電連接的輻射部，通過第一高頻部2〇和 第二咼頻部31將高頻頻段信號（GSM171〇 GSM199〇頻段） 輻射開去，同時通過低頻部32將低頻頻段信號 (GSM824-GSM960頻段）輻射開去。 如上所述，本創作的低頻部32與第二高頻部31之間具有 L形的第一間隙34，所述第一間隙34有效加寬了多頻天線中 M420060 高頻的頻帶，使得該多頻天線可滿足多種制式的通訊標準要 求。 【圖式簡單說明】 第一圖係本創作多頻天線中導電層的立體示意圖。 第二圖係第一圖中所述導電層的俯視圖。 【主要元件符號說明】 導電層 1 饋入端 11 接地端 12 第一高頻部 20 第一高頻輻射臂 21 第二高頻輻射臂 22 第三高頻輻射臂 23 第二間隙 24 第二高頻部 31 低頻部 32 補償臂 33 第一間隙 34M420060 V. New description: [New technical field] This creation involves the field of communication equipment. In particular, it relates to a multi-frequency antenna that meets the requirements of various communication standards. [Prior Art] With the rapid development of the high-tech communication industry, mobile communication applications are becoming more and more widespread, especially 4G communication is becoming more and more popular. Therefore, the demand for frequency bands for antennas of mobile communication devices such as mobile phones and notebook computers is increasing. The higher it is. However, with the miniaturization of mobile communication, especially the miniaturization of communication devices such as mobile phones, the built-in antenna is limited in size, and the mobile communication device often causes the antenna to generate resonance intensities of different intensities when used. The resonance frequency offset must be compensated by the bandwidth, that is, the bandwidth of the actual antenna needs to be larger than the design bandwidth, but increasing the bandwidth often requires increasing the area of the radiation area in the antenna, so how to make a multi-frequency antenna in a limited space to meet various communication standard requirements. 'It is a problem to be solved by those skilled in the art. Therefore, there is an urgent need for a multi-frequency printed antenna that is small in size and can meet various communication standards. [New content] The purpose of this creation is to provide a multi-frequency antenna with limited volume and meeting various communication standards for the above-mentioned deficiencies of the prior art. To achieve the above object, the present invention provides a multi-frequency antenna for receiving and transmitting electrical chopping signals of a plurality of different frequency bands, the multi-frequency antenna comprising a substrate and a conductive layer formed on a front surface of the substrate, the conductive layer The utility model comprises a feeding end, a grounding end located on the adjacent side of the feeding end, a first high frequency part extending to the left rear along the feeding end and controlling the first frequency band, extending to the right rear side along the feeding end and controlling the second frequency band. a second high frequency portion and a low frequency portion extending along a right end of the second high frequency portion along the feed end and controlling a third 3 M420060 frequency band and a fourth frequency band, and a first gap formed between the low frequency portion and the second high frequency portion The first gap is L-shaped. As described above, the low frequency portion and the high frequency portion of the present invention have an L-shaped first gap, and the first gap effectively widens the frequency band of the high frequency in the multi-frequency antenna, so that the multi-frequency antenna can satisfy various modes. [Communication Standard Requirements] [Embodiment] The technical contents, structural features, achieved objects and effects of the present invention will be described in detail below with reference to the embodiments and the accompanying drawings. Referring to the first and second figures, the present multi-frequency antenna is used for receiving and transmitting electromagnetic wave signals of four different frequency bands, which comprises a substrate (circular not shown) and a conductive layer 1 formed on the front surface of the substrate, a conductive layer 1 is covered with a black cover film (not shown), and the back of the substrate is back-molded (not shown). With continued reference to the first and second figures, the conductive layer includes a feed end u, a ground end 12 on the adjacent side of the feed end 11 and a radiation portion (not shown), the radiation 邛 including the feed along The first high-frequency portion 2〇 extending from the end 11 to the left rear, the second high-frequency portion 31 and the low-frequency portion 32 extending rearward and backward along the feeding end 11, the low-frequency portion 32 is bent and distributed at the second highest A first gap 34 is formed between the right rear side of the frequency portion 31 and the second high frequency portion 31. The first gap 34 has a shape, and the first high frequency portion 20 controls the first frequency band 'the second high frequency portion 31 (four) second frequency band The low frequency portion 32 controls the third frequency band and the fresh light portion to be a layer, and the ground portion 12 and the feed end u are both gold plating layers. In the eighth, the frequency range of the first frequency band is 185 〇 199 〇 MHz, the frequency range of the first band _ 171G to the chat room, the frequency range of the third frequency band 894 MHz, and the frequency range of the fourth frequency band is 880 960 960 MHz. Specifically, with reference to the first and second figures, the width of the rectangular 'th to the commercial frequency unit 20 of the second high frequency portion η is larger than the width of the low frequency portion 32, and the like The width of the frequency portion 31 is larger than the width of the first high frequency portion 20. The thick and short-like-frequency portion 31 effectively widens the frequency band of the high-frequency antenna in the multi-frequency antenna. Preferably, with reference to the first and second figures, the end of the low frequency portion 32 extends in the direction of the second ancient arm 3 and the neck 31 to form a compensation compensating arm opposite to the second high frequency portion 31. 33 effectively widens the frequency band of the high frequency antenna in the multi-frequency antenna. - Body, referring to the first and second figures, the width of the compensating arm 33 is twice the width of the low frequency portion 32. In the present embodiment, the width of the low frequency portion 32 is the width of the mm compensation arm of 3 mm, and the error range is ±01 mm. Preferably, referring to the first figure and the second figure, the first high frequency portion 2 includes a first high frequency radiating arm 21 formed with the feed end 11 extending rearward and along the first high frequency radiating arm 21 The second high frequency radiating arm 22 formed by extending the left bend, specifically, the first frequency radiating arm 22 is bent downwardly and then bent to the left and curved to bend the second south frequency radiating arm 22 and the second A second arcuate second gap 24 is formed between the high frequency radiating arms 21. The semi-arc shaped second gap 24 effectively widens the frequency band of the high frequency in the multi-frequency antenna. Specifically, referring to the first figure and the second figure, the end of the second high frequency radiating arm 22 is bent to the right to form a third high frequency radiating arm 23, and the second high frequency radiating arm 22 is bent downward. The third high frequency radiating arm 23 is partially bent to the right, and the second high frequency radiating arm 23 effectively widens the frequency band of the high frequency in the multi-frequency antenna. The width of the second frequency-frequency radiating arm 23 is greater than that of the second high-frequency radiating arm 22. Referring to the first figure and the second figure, in operation, the signal of the high and low frequency bands enters the radiation portion electrically connected to the feed end U from the feed end 11 and is high through the first high frequency portion 2 and the second frequency portion 31. The frequency band signal (GSM 171 〇 GSM 199 band) is radiated, and the low frequency band signal (GSM 824-GSM 960 band) is radiated through the low frequency portion 32. As described above, the low frequency portion 32 of the present creation and the second high frequency portion 31 have an L-shaped first gap 34, which effectively widens the frequency band of the M420060 high frequency in the multi-frequency antenna, so that The multi-frequency antenna can meet the communication standard requirements of various standards. [Simple description of the diagram] The first figure is a three-dimensional diagram of the conductive layer in the multi-frequency antenna of the present invention. The second figure is a top view of the conductive layer in the first figure. [Main component symbol description] Conductive layer 1 Feed terminal 11 Ground terminal 12 First high frequency portion 20 First high frequency radiation arm 21 Second high frequency radiation arm 22 Third high frequency radiation arm 23 Second gap 24 Second high Frequency section 31 low frequency section 32 compensation arm 33 first gap 34