201042817 六、發明說明： 【發明所屬之技街領域】 本發明係關於一種行動通訊裝 降低天線所受到之接妯_ 疋種具有 又y之接地面影響且增加 行動通訊裝置。 η 呆作頻見之 【先前技術】 » 、隨著㈣通訊技術與市場的快速發展，帶動 通訊產品應用越來越廣泛，行動通訊裝置已成為人們不 :或缺的通訊媒介。目前常見的行動通訊裝置類型有手 機、個人數位助理和筆記型電腦，其所採用的系統接地 面尺;寸大小不同’因而對應的天線設計也不盡相同。例 如筆冗型電腦相較於手機而言，其系統接地面尺寸遠大 於手機的系統接地面’因此若將手機之天線直接應用於 筆記型電腦當中，天線必需重新調整或設計，其所耗費 的研發成本將增加。例如美國專利us Β2 ‘Folded Dual-Band Antenna Appamus (折疊雙頻天線裝 置）’’’其揭示一種應用於手機之天線設計，然而若將此 天線直接應用於筆記型電腦中，將需要重新調整天線參 數，增加研發成本。 > 【發明内容】 為了解決上述之問題，本發明提出一種行動通訊裝 置，其可將原本應用於手機之天線設計，直接應用於筆 201042817 記型電腦之中，此時天線特性受 影:可以降低’因此在不用改變天線尺寸=面: 口用於手機時之特性近似'並具有增力: 原无天踝知作頻寬之效能。 本發明之行動通訊裝置，包含：一接地面、一 及一槽縫。該天線位於該接地面之一邊緣 、 位於該接地面，盥該天t 曰、’、’， 口端及-h, 相重4,該槽縫具有一開 、 末知，該開口端位於該接地面之一邊緣严，祐 鄰近該天線，該末端則朝向該接地面㈣ ^ 縫於一特定頻㈣成共振，增加該天線於該 = 操作頻寬。 行疋頻羊之 在本發明之行動通訊裝置中，由於該天線鄰近該槽 由空間中的電場或是接地面上之表面電流提 二此里給该槽縫，使得該槽縫可以激發在該特定頻率之 —近似四分之一波長之共振模態，形成一寄生模態以增 天線之操作頻寬。另外，由於該槽孔所激發之寄二 模態使得該接地面上之表面電流主要環繞在該槽縫周 圍其他區間之表面電流分佈則大幅降低，因此^接地 面對於該天線特性的影響也可以大幅降低。 【實施方式】 第1圖為本發明之行動通訊裝置之第—實施例i 、、、。構圖，包含.一接地面1 0，該接地面1 〇可以為一筆 液晶螢幕之支撐金屬背板；一天線U，位於 201042817 ===緣處;及一槽缝12，位於該接地面ι〇, 二以、122 :相重®，該槽缝具有-開口端121及 HH，：鄰二H 121位於該接地面之-邊緣處 內铜由 '天線U’該末端122則朝向該接地面10 衫壤n縫12於—特定頻㈣成共振，增加 該天線11於該特定頻率之操作頻寬。201042817 VI. Description of the invention: [Technical street field to which the invention pertains] The present invention relates to a mobile communication device that reduces the exposure of the antenna, and has the influence of the ground plane and increases the mobile communication device. η stays in the air [previous technology] » With (4) the rapid development of communication technology and market, driving the application of communication products more and more, mobile communication devices have become a communication medium that people do not lack. Currently, the types of mobile communication devices commonly used are mobile phones, personal digital assistants, and notebook computers, which employ a system grounding scale; the size of the inch is different, and thus the corresponding antenna design is also different. For example, compared with mobile phones, the size of the system ground plane is much larger than the system ground plane of the mobile phone. Therefore, if the antenna of the mobile phone is directly applied to the notebook computer, the antenna must be re-adjusted or designed. R&D costs will increase. For example, the US patent us Β 2 'Folded Dual-Band Antenna Appamus'' discloses a antenna design for mobile phones. However, if this antenna is directly applied to a notebook computer, the antenna will need to be re-adjusted. Parameters, increase research and development costs. < SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a mobile communication device, which can be directly applied to the antenna design of a mobile phone, and is directly applied to the pen 201042817 type computer, and the antenna characteristics are affected at this time: Reduced 'so there is no need to change the size of the antenna = face: the characteristics of the mouth when used in mobile phones are similar' and have the power to increase: the original has no effect on the bandwidth. The mobile communication device of the present invention comprises: a ground plane, a slot and a slot. The antenna is located at one edge of the ground plane, on the ground plane, and the day t 曰, ', ', the mouth end and the -h, the weight 4, the slot has an open, a short end, the open end is located at the One edge of the ground plane is strict, adjacent to the antenna, the end is toward the ground plane (four) ^ is stitched to a specific frequency (four) to resonate, and the antenna is increased in the operation bandwidth. In the mobile communication device of the present invention, since the antenna is adjacent to the slot, the electric field in the space or the surface current on the ground plane is lifted to the slot, so that the slot can be excited. The resonant mode of a particular frequency - approximately a quarter wavelength - forms a parasitic mode to increase the operating bandwidth of the antenna. In addition, since the two modes of the slot excited by the slot cause the surface current on the ground plane to be mainly around the other sections around the slot, the current distribution is greatly reduced, so that the influence of the ground plane on the antenna characteristics can also be significantly reduce. [Embodiment] FIG. 1 is a first embodiment of the mobile communication device of the present invention. The composition includes a ground plane 10, the ground plane 1 〇 can be a support metal back plate of a liquid crystal screen; an antenna U at the edge of 201042817 ===; and a slot 12 at the ground plane ι〇 , II, 122: phase weight®, the slot has an open end 121 and HH, and the neighboring two H 121 is located at the edge of the ground plane. The copper is connected to the ground plane 10 by the 'antenna U'. The smear 12 is resonated at a specific frequency (four) to increase the operating bandwidth of the antenna 11 at the particular frequency.
=2圖為本發明之行動通訊裝置之第二實施例2 :圖.其結構基本上與第一實施例相同，惟該天線 1為-又頻天線，該天線21具有—天線饋人點川， 该天線饋入點2H電氣連接至一訊號源仏2 is a second embodiment 2 of the mobile communication device of the present invention: the structure is basically the same as that of the first embodiment, except that the antenna 1 is a frequency-repetitive antenna, and the antenna 21 has an antenna feeding point. , the antenna feed point 2H is electrically connected to a signal source
弟3圖為第二實施例之返回損失圖，其中橫軸代表 f乍頻率’縱軸代表返回損失。在第二實施例中，考慮 葦記型電腦液晶螢幕支#金㈣㈣接地面環境，選擇 接地面1〇之長度約為260 mm、寬度約為200 mm ;天 線21，其體積為5〇χ8χ3咖3 ;槽縫22，其長度為乃 寬度為2 mm’並經過―次彎折以接少在接地面上 所佔之面積’且槽缝22之長度接近则顚z之四分之 :波長。由實驗結果可知，在6dB返回損失定義下， 第二實施例之第一操作頻帶31及第二操作頻帶32可分 別涵蓋GSM850/900 (824〜960 MHz)頻帶及Figure 3 is a return loss map of the second embodiment, in which the horizontal axis represents the f 乍 frequency and the vertical axis represents the return loss. In the second embodiment, considering the environment of the grounding surface of the 金 型 computer LCD screen #金(四)(4), the length of the grounding surface 1 选择 is about 260 mm and the width is about 200 mm; the antenna 21 has a volume of 5 〇χ 8 χ 3 coffee 3; slot 22, the length of which is 2 mm' in width and through the "secondary bending to reduce the area occupied on the grounding surface" and the length of the slot 22 is close to the quarter of 顚z: wavelength. It can be seen from the experimental results that under the definition of 6 dB return loss, the first operating band 31 and the second operating band 32 of the second embodiment can cover the GSM850/900 (824~960 MHz) band and
Gs^n800/1900/UM丁s (171〇〜217〇 mhz)頻帶。在此須 注思到當第二實施例未具有槽縫22時，天線21之特性 受到接地面10之影響較大，由第3圖之結果可以看出 201042817 第-操作頻帶33位於約900 ΜΗζ，其頻寬大幅下降， :法涵蓋GS腿〇/_頻帶’而第二操作頻帶％則大 之料頻率增加天線之操作確貫能在 為二發明之行動通訊裝置之第三實施例4 :;=，其中槽縫42具有至少二次彎折，以減小槽缝 在接地面上所佔的面積，其他結構與第—實_ ΟGs^n800/1900/UM Ding s (171〇~217〇 mhz) band. It should be noted here that when the second embodiment does not have the slot 22, the characteristics of the antenna 21 are greatly affected by the ground plane 10. As can be seen from the result of FIG. 3, the first operating band 33 of 201042817 is located at approximately 900 ΜΗζ. The bandwidth is greatly reduced, the method covers the GS leg 〇 / _ band ' while the second operating band % is large, and the frequency of the antenna is increased. The operation of the antenna can be achieved in the third embodiment of the mobile communication device of the second invention: ; =, wherein the slot 42 has at least two bends to reduce the area occupied by the slot on the ground plane, and other structures and the first - actual _ Ο
:似’弟二實施例因此亦能獲得與第一實施例近似的結 呆0 弟5圖為本發明之行動通訊裝置之第四實施例^ 結構圖，其中槽縫52寬度不等t 見及小寺見，以減小槽缝52所需 的長度，其他結構與第一實施例相似；此時，第四實施 例亦能獲得與第一實施例近似的結果。 第6 ®為本發明之行動通訊裝置之第五實施例6 結構圖，其中槽縫62具有至少—支路63，可於至卜 率形成共振’並增加天線於至少—特定頻率的操 作頻見’其他結構與第—實施例相似；此時，第五實施 例亦能獲#與第一實施例近似的結果。 以上說明令所述之實施例僅為說明本發明之原理 八力效而非限制本發明。因此，習於此技術之人士 可在不違背本發明之精神對上述實施例進行修改及變 化。本發明之權利範圍應如後述之中請專利範圍所列。 201042817 【圖式簡單說明】 第1圖為本發明之行動通訊裝置第一實施例結構圖。 =2圖為本發明之行動通訊裝置第二實施例結構圖。 第3圖為本發明之行動通訊裝置第二實施例之返回損失 圖。 第4圖為本發明之行動通訊裝置第三實施例結構圖。 =5圖為本發明之行動通訊裝置第四實施例結構圖。 第6圖為本發明之行動通訊裝置第五實施例結構圖。 【主要元件符號說明】 1 .本發明之行動通訊裝置第一實施例 2 •本發明之行動通訊裝置第二實施例 4 •本發明之行動通訊裝置第三實施例 5 .本發明之行動通訊裝置第四實施例 6 •本發明之行動通訊裝置第五實施例 10 :接地面 101 .接地面之一邊緣 11 :天線 12, 22, 42, 52, 62 :槽縫 121, 221, 421, 521, 621 :槽縫之開口端 122, 222, 422, 522, 622 :槽縫之末端 21 :雙頻天線 211 :雙頻天線饋入點 23 :訊號源 201042817 31 ••第 二 貝 施例之第一 操 作 頻 帶 32 :第 二 實 施例之第二 操 作 頻 帶 33 :第 二 實 施例未具有 槽 缝 之 第- -操 作頻 帶 34 :第 二 實 施例未具有 槽 缝 之 % 二 --操 作頻 帶 63 :槽 缝 之 一支路The embodiment of the second embodiment of the mobile communication device of the present invention is similar to the embodiment of the present invention. The slot 52 has different widths. The small temple is seen to reduce the length required for the slit 52, and other structures are similar to those of the first embodiment; at this time, the fourth embodiment can also obtain results similar to those of the first embodiment. 6th is a structural diagram of a fifth embodiment of the mobile communication device of the present invention, wherein the slot 62 has at least a branch 63 which can form a resonance at the arrival rate and increase the operation frequency of the antenna at least at a specific frequency. The other structure is similar to the first embodiment; at this time, the fifth embodiment can also obtain the result similar to that of the first embodiment. The above described embodiments are merely illustrative of the principles of the invention and are not limiting of the invention. Therefore, those skilled in the art can modify and change the above embodiments without departing from the spirit of the invention. The scope of the invention should be as set forth in the scope of the patents described below. 201042817 [Simplified description of the drawings] Fig. 1 is a structural view showing a first embodiment of the mobile communication device of the present invention. Fig. 2 is a structural view showing a second embodiment of the mobile communication device of the present invention. Figure 3 is a diagram showing the return loss of the second embodiment of the mobile communication device of the present invention. Figure 4 is a structural view showing a third embodiment of the mobile communication device of the present invention. Fig. 5 is a structural diagram showing a fourth embodiment of the mobile communication device of the present invention. Figure 6 is a block diagram showing a fifth embodiment of the mobile communication device of the present invention. [Main component symbol description] 1. Mobile communication device of the present invention First embodiment 2: Mobile communication device of the present invention Second embodiment 4: Mobile communication device of the present invention Third embodiment 5. Mobile communication device of the present invention Fourth Embodiment 6: Mobile communication device of the present invention Fifth Embodiment 10: Ground plane 101. One edge of the ground plane 11: Antennas 12, 22, 42, 52, 62: slots 121, 221, 421, 521, 621: open end of slot slot 122, 222, 422, 522, 622: end of slot 21: dual-band antenna 211: dual-frequency antenna feed point 23: signal source 201042817 31 • first second embodiment Operating band 32: second operating band 33 of the second embodiment: second embodiment without slotting - operating band 34: second embodiment without slot % 2 - operating band 63: slot One road