499781 五、發明說明（1) 近年來’由於通訊業的發達，加上國人教育水準的普 及/、生活品質的提升’手機天線的輕射量對人體所造成的 影響漸漸受到重視，因而，坊間充斥著各種具有降低天線 幸畐射量對^傷害的配件。但是，這些配件附加於手機上 也僅僅只是治標的方法’同時增加天線的體積；唯有天線 本身具有較小的背向輕射(朝使用者之方向）方可達到治 本。所以’本發明天線之一大目標係減少背向輕射，期能 避免人體吸收過多的電磁波而造成未知的傷害。 此外，由料類祕電·品有爐積小發展的趨 因此’輕薄短小的天線才符合無線電器發展的趨勢， 更因為輕薄短小的天線能使電器產品的整體體積不至於過 大，使得產品具有小巧玲_外觀，進而加強了消費者的 購買慾’也才能使該無線電器產品更具有市場競爭力。本 發明天線_彎曲-平面單偶極天線，使其高度大幅降 低，具有低姿式的優點；此外，我們發現再將其中一端連 接至天，接地面’可使得天線的背向輕射降低，所以她 於-般單偶極天線’本發明天線有助於使使用者吸收到較 少的電磁波能量。此種具有低背向輕射的特性，有可能是 因為由於本發明天線的接地面亦可視為手機接地面的一個 延伸，而使得天線的背向輻射得以降低。 本發明天線之-實施例！請參考第J圖，其中天線配 置於垂直接地面16 ’該接地面可視為行動通訊手機之接 也面而本务a月天線包括：一短路折彎輕身于金屬片，其共 i張尺度適用中' m * 事A \m W 再* f裝 經濟部中央標準局員工消費合作社印製 499781 A7 B7 五、發明說明（2) 振長度接赌作_的1/4波長，且其频近似—倒口形， 包含-短路金屬面10、一水平金屬面u及一垂直金屬面 I、2 ; -饋人金屬片13，與垂直金屬面12接近平行或平行， 並以電容麵合方式激發短路折雜射金屬^ —镇入 14，穿透水平接地面15上之―小孔，並連接饋入金屬木片 13至§fl號端，一天線接地面15。 本發明天線的實作量測結果分別於第2 i 4圖中說 明，=線高度為15mm，僅約為_的中心操作頻率的波 長’遠小於-般單偶極天線所需的O K中心操作 長，而天線體積们2 X 10 X 15麵3，並且能夠含罢⑽ 頻段所須求的頻寬[見圖2，天線的操作頻寬為伽碰 (1694-1880 MHz)’1:2.5電壓駐波比或73dB返回損失阻 抗頻寬之定義]。圖3為1800 MHz操作頻率之輕射場型量 測結果。由x-y平面的場型圖可以看出朝_χ (使用者頭部） 方向的輻射場量較朝+x (遠離使用者頭部)方向小了約⑺ dB’另外於χ-ζ平面的場型圖可以看出類似的結果，因此， 本發明天線明顯具有背向輻射的降，有助於避免使用者 吸收過多的電磁波能量而造成傷害。而此Dcs頻帶中的天 線增亞量測結果如第4圖所示，本發明天線具有不錯的天 線增益。 曰 第5圖所示為本發明天線之其他實施例結構圖；在圖 5中，短路金屬面標示為50，水平與垂直金屬面分別標示 為51與52，而水平與垂直金屬面的夾角標示為57。為了 氏張尺度適用中國國家標準（CNS) A4規格（210x2^7公釐： 請 先 閱 讀 背 意4 事· 項1 S裝 寫 I 本 頁 訂 經濟部中央標準局員工消費合作社印製 五 發明說明（3) 調整匹配與操作頻率， 三角形或其崎_狀^^面52之雜和為矩形、 屬面5丨或垂直金屬面52 =匹配。此外，亦可在水平金 狹縫，用⑽職_·^^餘嫌的槽孔或 和奶。饋入金屬片二I，配，如圖5之槽孔511 屬片軚不為53，可為矩形、圓形、三角形 I、他近似形狀，l舰配。饋人探針為54，而天線 接地面與垂直(手機)接地面則分別標示為％與56。 以上所敘述之實施例僅為說明本發明之原理及其功 效’而非_本發明；凡其絲麟本發騎揭示之精神 下所完成之修改及變化，均應包含在後述之申請專利^ 内。 ^ 請 先 閱 讀 背 意 事 項 再 填 奘 寫衣 本 I 頁 ----- 經濟部中央標準局員工消費合作社印製 本紙張尺度適用中國國家標準（CNS) A4規格（210x297公釐） 499781 A7 B7 五、發明說明（4) [圖式簡單說明] 第1圖為本發明天線之一實施例結構圖。 第2圖為本發明天線返回損失量測結果。 第3圖為本發明天線於1800MHz的輻射場型量測結果。 第4圖為本發明天線於DCS頻帶内增益的量測結果。 第5圖為本發明天線之其他實施例結構圖。 (請先閱讀背面之注意事項再填寫本頁) 經濟部中央標準局員工消費合作社印製 本紙張尺度適用中國國家標準（CNS) A4規格（210x297公釐） /δ 1 Α7 Β7 五、發明說明（5) [元件符號說明] 1 :具有低背向輻射的低姿式單偶極手機天線一實施例 1〇 ·短路金屬面 π:水平金屬面 12 :垂直金屬面 U :饋入金屬片 W :饋入探針 15 ·天線接地面 π:垂直接地面或行動通訊手機接地面 17 :水平金屬面與垂直金屬面的夾角 5:具有低背向輻射的低姿式單偶極手機天線其他實施例 50 :短路金屬面 51 :水平金屬面 511 :水平金屬面上的狹縫 52 :垂直金屬面 521 ··垂直金屬面上的槽孔 經濟部中央標準局員工消費合作社印製 53 :饋入金屬片 54 :饋入探針 55 ·天線接地面 56:垂直接地面或行動通訊手機接地面 57 :水平金屬面與垂直金屬面的爽角 W細中國國家_499781 V. Description of the invention (1) In recent years, 'the development of the communications industry, coupled with the popularization of the education level of Chinese people, and the improvement of the quality of life', the impact of the light emission of mobile phone antennas on the human body has gradually received attention. It is full of various accessories that can reduce the damage of the antenna's radiation. However, the addition of these accessories to the mobile phone is only a method to cure the symptoms. At the same time, it increases the volume of the antenna; only the antenna itself has a small back light (toward the user) to achieve the cure. Therefore, one of the big goals of the antenna of the present invention is to reduce back light emission, in order to prevent the human body from absorbing excessive electromagnetic waves and causing unknown damage. In addition, due to the trend of the development of materials and products, the light and thin antennas are in line with the development trend of radios, and the light and short antennas can make the overall volume of electrical products not too large, making the products have Xiao Qiaoling's appearance, which further strengthened the consumer's desire to buy, can also make this radio product more competitive in the market. The antenna of the present invention is a curved-planar single dipole antenna, which greatly reduces its height and has the advantage of a low posture. In addition, we have found that connecting one end to the sky again, the ground plane can reduce the back light of the antenna. So she is like a single dipole antenna. The antenna of the present invention helps the user to absorb less electromagnetic wave energy. This kind of low back light emission may be because the ground plane of the antenna of the present invention can also be regarded as an extension of the ground plane of the mobile phone, so that the antenna's back radiation is reduced. Embodiment of the antenna of the present invention! Please refer to Figure J, where the antenna is arranged on the vertical ground plane 16 'This ground plane can be regarded as the interface of the mobile communication mobile phone. The antenna of this service includes: a short-circuit bending light weight on a metal sheet, which has a total of i dimensions Applicable 'm * event A \ m W then * f installed by the Consumer Standards Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs, printed 499781 A7 B7 V. Description of the invention (2) The vibration length is 1/4 of the wavelength, and its frequency is approximately -Inverted shape, including-short-circuited metal surface 10, a horizontal metal surface u and a vertical metal surface I, 2;-feeding a metal sheet 13, which is nearly parallel or parallel to the vertical metal surface 12, and is excited in a capacitive plane Short-circuited diffusive metal ^-ball 14 penetrates a small hole in the horizontal ground plane 15 and connects the feed metal chip 13 to §fl end, an antenna ground plane 15. The actual measurement results of the antenna of the present invention are illustrated in Figures 2 and 4 respectively. = The line height is 15mm, and the wavelength of the center operating frequency, which is only about _, is much smaller than the OK center operation required for a normal dipole antenna. Long, and the antenna volume is 2 X 10 X 15 sides 3, and can include the required bandwidth of the strike band [see Figure 2, the operating bandwidth of the antenna is Gamma (1694-1880 MHz) ': 1: 2.5 voltage Definition of standing wave ratio or 73dB return loss impedance bandwidth]. Figure 3 shows the light field measurement results at an operating frequency of 1800 MHz. From the field pattern of the xy plane, it can be seen that the radiation field in the direction of _χ (user's head) is smaller than the direction of + x (away from the user's head) by about ⑺ dB 'and the field in the χ-ζ plane. Similar results can be seen in the type diagram. Therefore, the antenna of the present invention obviously has a drop in back radiation, which helps to prevent the user from absorbing excessive electromagnetic wave energy and causing harm. The antenna sub-measurement results in this DCS band are shown in Fig. 4. The antenna of the present invention has a good antenna gain. Figure 5 shows the structure of another embodiment of the antenna of the present invention; in Figure 5, the short-circuited metal surface is labeled 50, the horizontal and vertical metal surfaces are labeled 51 and 52, and the angle between the horizontal and vertical metal surfaces is labeled For 57. For the Zhang scale, the Chinese National Standard (CNS) A4 specification (210x2 ^ 7 mm is used: Please read the intent 4 things · item 1 S writing I. This page is printed by the Central Bureau of Standards of the Ministry of Economic Affairs and the Consumer Cooperatives printed five invention instructions (3) Adjust the frequency of matching and operation. The sum of the triangle or its 崎 -shaped ^^ face 52 is rectangular, the subordinate face 5 丨 or the vertical metal face 52 = matching. In addition, you can also use the _ · ^^ Slots or milk that I suspect. Feed the metal piece two I, match, as shown in the slot 511 of Figure 5 is not a piece of 53, it can be rectangular, circular, triangular I, his approximate shape, l Ship configuration. The feeding probe is 54, and the antenna ground plane and the vertical (mobile phone) ground plane are marked as% and 56. The embodiments described above are only to illustrate the principle of the present invention and its effects. The present invention; all modifications and changes made under the spirit revealed by its silk hair, should be included in the patent application ^ described below. ^ Please read the intent and then fill out the page I of the clothing --- -Printed by the Consumer Cooperatives of the Central Bureau of Standards of the Ministry of Economic Affairs Home Standard (CNS) A4 specification (210x297 mm) 499781 A7 B7 V. Description of the invention (4) [Simplified diagram] Figure 1 is a structural diagram of an embodiment of the antenna of the present invention. Figure 2 is the return of the antenna of the present invention Loss measurement results. Figure 3 is the radiation field measurement results of the antenna of the present invention at 1800 MHz. Figure 4 is the measurement results of the antenna of the present invention in the DCS frequency band. Figure 5 is another embodiment of the antenna of the present invention. (Please read the notes on the back before filling out this page) Printed by the Central Consumers Bureau of the Ministry of Economic Affairs, Consumer Cooperatives This paper is printed in accordance with China National Standard (CNS) A4 (210x297 mm) / δ 1 Α7 Β7 V. Description of the invention (5) [Explanation of component symbols] 1: Low-profile single-dipole mobile phone antenna with low back radiation Example 1 · Short circuit metal surface π: Horizontal metal surface 12: Vertical metal surface U: Feed metal Sheet W: Feed probe 15Antenna ground plane π: Vertical ground plane or mobile phone ground plane 17: Angle between horizontal metal plane and vertical metal plane 5: Low attitude single dipole mobile phone antenna with low back radiation Other embodiment 50: short circuit Metal surface 51: Horizontal metal surface 511: Slots on horizontal metal surface 52: Vertical metal surface 521 Slotted holes on vertical metal surface Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs 53: Feeding metal sheet 54: Feeding Access probe 55 · antenna ground plane 56: vertical ground plane or mobile phone ground plane 57: cool angle between horizontal metal plane and vertical metal plane W China _