201216561 11 12 122, 132, 152 13 131 14 15 • 16 17 接地面 介質基板 績入部 開口端 短路輻射部 短路點 耦合間距 幸虽射支路 信號源 天線 五、 本案若有化學式時，請揭示最能顯示發明特徵的化學 式： 無。 六、 發明說明： 【發明所屬之技術領域】 本發明係一種行動通訊裝置，特別是一種可應用於雙 寬頻頻帶操作之行動通訊裝置。 【先前技術】 隨著無線通訊的蓬勃發展，各式各樣的無線通訊技術 與產品不斷的推陳出新，通訊系統目前已由2G (Second Generation)進展到 3G (Third Generation)，接下來將更進一步 邁向 4G (Fourth Generation)。而 LTE (Long Term Evolution)在 4G通訊系統中扮演著舉足輕重的角色，因此為了因應 201216561 4G通訊系統的需求，行動通訊裝置中的天線將需於有限 的空間中涵蓋雙寬頻頻帶（約704〜960 MHz及1710〜2690 MHz)。在先前技術中，雖然已揭露使用耦合饋入來達成 天線較寬頻操作的技術，台灣專利公開號第200947802號“ 一種共面耗合式饋入多頻行動通訊裝置天線”即為一例。 然而先前技術之耦合饋入主要是利用電容性補償以及造成 更均勻之電流分佈來增加天線操作頻寬，但是饋入結構本 身並無法產生共振模態，因此仍然不足以在非常有限的空 間中達到涵蓋4G通訊系統的雙寬頻操作需求。 【發明内容】 為了解決上述問題，本發明提出一種雙寬頻行動通訊 裝置，其中的天線不但能有效利用耦合饋入的特點，並更 進一步利用饋入結構本身來增加共振模態，配合短路輻射 部以及輻射支路之共振模態，達成於縮小化的天線尺寸下 之雙寬頻操作。 本發明為一種雙寬頻行動通訊裝置，具有一接地面及 一天線，該天線鄰近該接地面，且該天線具有一第一操作 頻帶及一第二操作頻帶，該天線並至少包含：一介質基板 ，該介質基板鄰近該接地面；一饋入部，該饋入部位於該 介質基板上，且該饋入部之一端連接至一信號源，其另一 端為一開口端，該饋入部並於一第一特定頻率產生一共振 模態，且該第一特定頻率位於該第二操作頻帶内；一短路 輻射部，該短路輻射部至少部分區間位於該介質基板上，{S5 4 201216561 且該短路輻射部經由—短路點連接至該接地面， 短路點之另一端為一開口端，該 ；^ 之邱八°路輻射。卩郴近該開口端 。刀Η並與該饋人部具有—輕合間距，該短路201216561 11 12 122, 132, 152 13 131 14 15 • 16 17 Ground plane dielectric substrate entry section open end short-circuit radiating section short-circuit point coupling pitch. Fortunately, although the branch signal source antenna is used. 5. If there is a chemical formula in this case, please reveal the best. Chemical formula showing the characteristics of the invention: None. VI. Description of the Invention: [Technical Field] The present invention is a mobile communication device, and more particularly, a mobile communication device that can be applied to dual wide frequency band operation. [Prior Art] With the rapid development of wireless communication, various wireless communication technologies and products are constantly being updated. The communication system has now progressed from 2G (Second Generation) to 3G (Third Generation), and then it will go further. To 4G (Fourth Generation). LTE (Long Term Evolution) plays a pivotal role in the 4G communication system. Therefore, in order to meet the requirements of the 201216561 4G communication system, the antenna in the mobile communication device will need to cover the double broadband band in a limited space (about 704~960). MHz and 1710 to 2690 MHz). In the prior art, although a technique of using a coupling feed to achieve a wider frequency operation of an antenna has been disclosed, Taiwan Patent Publication No. 200947802 "A Coplanar Consumable Feeding Multi-Frequency Mobile Communication Device Antenna" is an example. However, prior art coupling feeds mainly use capacitive compensation and cause a more uniform current distribution to increase the antenna operating bandwidth, but the feed structure itself does not produce a resonant mode, so it is still not enough to achieve in a very limited space. Covers the dual broadband operation requirements of 4G communication systems. SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a dual broadband mobile communication device, in which the antenna not only can effectively utilize the characteristics of coupling feeding, but also further utilizes the feeding structure itself to increase the resonant mode and cooperate with the short-circuit radiating portion. And the resonant mode of the radiating branch, achieving double broadband operation under the reduced antenna size. The present invention is a dual-band mobile communication device having a ground plane and an antenna adjacent to the ground plane, and the antenna has a first operating frequency band and a second operating frequency band, and the antenna includes at least: a dielectric substrate The medium substrate is adjacent to the grounding surface; a feeding portion is located on the dielectric substrate, and one end of the feeding portion is connected to a signal source, and the other end is an open end, and the feeding portion is first The specific frequency generates a resonant mode, and the first specific frequency is located in the second operating frequency band; a short-circuiting radiating portion at least partially located on the dielectric substrate, {S5 4 201216561 and the short-circuit radiating portion is - The short-circuit point is connected to the ground plane, and the other end of the short-circuit point is an open end, which is radiated by the Qiu eight-way. Close to the open end. The knives have a light-to-pitch distance with the feed portion, and the short circuit
:=1間距，由該饋入部電容輕合激發，使該短路輕 身^於-第二特定頻率及一第三特定頻率分別產生一^ 极態’該第二特定鮮位於該第—操作頻㈣，且該第^ 特定頻率位於該第二操作頻帶内；及—輻射支路，二二 支路至少部分區間位於該介質基板上，且姉射支路 端連接至該饋人部，其另—端為—開口端，贿射支路於 -第四肢頻率產生—共振模態，增加天線操作頻寬。、 【實施方式】 …、為能更瞭解本發明之技術内容，特舉較佳具體實施例 况明如下。 請一併參考第1圖及第2圖。 第1圖為本發明第一實施例1之結構圖。第一實施例 1具有一接地面10及一天線17，該接地面10可為一筆記型 電腦液晶螢幕之金屬背板或一行動通訊裝置之系統接地面 。該天線17鄰近該接地面1〇，且該天線17具有一第一操作 頻帶21及一第二操作頻帶22，該天線17並至少包含：一介 質基板11，該介質基板Π鄰近該接地面1〇 ; 一饋入部I]， 該饋入部12位於該介質基板π上，且該饋入部12之一端連 接至一信號源16，其另一端為一開口端122，該饋入部12 201216561 之該開口端122寬度可大於2mm ，該饋入部12並於一第 一特定頻率產生一共振模態234，且該第一特定頻率位於 該第二操作頻帶22内，該饋入部12之長度可約為該第一特 定頻率之四分之一波長；一短路輻射部13，該短路輻射部 13至少部分區間位於該介質基板11上，且該短路輻射部13 經由一短路點131連接至該接地面10，相對於該短路點 131之另一端為一開口端132，該短路輻射部13鄰近該開 口端132之部分區間並與該饋入部12具有一耦合間距14， ^ 該耦合間距14可小於3mm，該短路輻射部13經由該耦合 間距14，由該饋入部12電容耦合激發，使該短路輻射部13 於一第二特定頻率及一第三特定頻率分別產生一共振模態 231、233，且該第二特定頻率位於該第一操作頻帶21内 ，而該第三特定頻率位於該第二操作頻帶22内，該短路輻 射部13之長度可約為該第二特定頻率之四分之一波長，亦 可至少為該饋入部12之長度的兩倍；及一輻射支路15，該 φ 輻射支路15至少部分區間位於該介質基板11上，且該輻射 支路15之一端連接至該饋入部12，其另一端為一開口端 152，該輻射支路15之該開口端152寬度可大於2mm ， 該輻射支路15可於一第四特定頻率產生一共振模態，而該 第四特定頻率可位於該第一操作頻帶21内亦可位於該第二 操作頻帶22内，亦或該輻射支路15可於第四特定頻率及第 五特定頻率分別產生一共振模態232、235，且該第四特 定頻率及第五特定頻率分別位於該第一操作頻帶21及該第 二操作頻帶内22，以增加天線操作頻寬。 6 201216561 第2圖為本發明第一實施例1之量測返回損失圖。於 第一實施例1中選擇下列尺寸來進行實驗：接地面10長度 約為260 mm，寬度約為200 mm ;介質基板η選用長度約為 70mm ’寬度約為14mm，厚度約為〇.4_之玻璃纖維基 板；饋入部12長度約為27 mm，其開口端122之寬度約為 4 mm ，另一端之寬度約為1 mm ;短路輻射部13之長度 約為95 mm，寬度約為1 mm ;輻射支路15之長度約為70 mm ’其開口端152寬度約為4 mm ，另一端之寬度約為 鲁 1 mm。由所得之實驗結果，在6 dB返回損失的定義之下 ，第一操作頻帶21足以涵蓋LTE700/GSM850/900 (約704〜 960 MHz)，第二操作頻帶 22 足以涵蓋 GSM1800/1900/UMTS/ LTE2300/2500(m0〜2690MHz)。因此，本發明雙寬頻行動 通訊裝置藉由天線Π之饋入部12、短路輻射部13以及輕射 支路15產生之共振模態231、232、233、234、235人 成二個寬頻的第—操作頻帶21及第二操作頻帶22，环、去 φ 4G通訊系統所需的雙寬頻操作需求。 第3圖為本發明第二實施例3之結構圖。與第—實扩 例1之最大差別在於該短路輻射部33及該輻射支路35之= 分區間係以沖壓或切割技術由金屬片製作而成。 ° 第4圖為本發明第三實施例4之結構圖。與第—實於 例1及第二實施例3之最大差別在於該短路輻射部们 輻射支路45之部分區間除了係以沖壓或切割技術由金屬^ 製作而成之外’更藉由彎折該短路輻射部43及兮輕射支路 201216561 45 ’以降低天線47整體高度。使用第2圖中第—實施例丄 之相3似尺寸，第三實施例4在天線整體尺寸為n… 一之下，可以達成4G通訊系統所需之雙寬頻操作需求 由於弟二實施例3及第三實施例4之操作原理盘第一 相同’藉由適度調整即可達到與第—實 似之結果，因此不再贅述。 仰 综上所述，本發明雙寬頻行動裝置之天線，兑— 可以藉由饋人部電餘合，有效激發短路㈣W兩㈣ 振模態（分別位於第-操作頻帶及第二操作頻帶）一 方面饋入部本身亦可產生一共振模態（位於第二操作頻帶 )，同時輻射支路可根據實際需求產生單一共振模 第-操作頻帶或是第二操作頻帶），亦可同時產生兩個此 振模態（分別於第-操作頻帶及第二操作頻帶）。藉由丄 述多個共㈣態，本發财縮小化的天線尺寸下，可達成 4G通訊系統令行動通訊裝置之雙寬頻操作需求（咖爾 GSM850/900 及 GSM1800/1900/UMTS/LTE2300/2500)。 综上所陳，本發明無論就目的、手段及功能，在在均 顯示其迥異於習知技術之特徵。惟需注意·，上述實施例僅 為例示性說明本發明之原理及其功效，而非用於限制本發 明之範圍。任何熟於此項技藝之人士均可在不違背本發; 之技術原理及精神下，對實施例作修改或變化。本發明權 201216561 利保護範圍應如後述之申請專利範圍所述。 【圖式簡單說明】 第1圖為本發明第一實施例之結構圖。 第2圖為本發明第一實施例之量測返回損失圖。 第3圖為本發明第二實施例之結構圖。 第4圖為本發明第三實施例之結構圖。:=1 spacing, the light is excited by the capacitance of the feeding portion, so that the short circuit is lightly generated, and the second specific frequency and the third specific frequency respectively generate a polarity state, wherein the second specific fresh is located in the first operating frequency (d), and the second specific frequency is located in the second operating frequency band; and - the radiation branch, at least part of the two-way branch is located on the dielectric substrate, and the transmitting branch end is connected to the feeding portion, and the other The end is the open end, the brix branch is generated at the fourth limb frequency-resonance mode, and the antenna operation bandwidth is increased. [Embodiment] In order to better understand the technical contents of the present invention, a preferred embodiment will be described below. Please refer to Figure 1 and Figure 2 together. Fig. 1 is a structural view showing a first embodiment of the present invention. The first embodiment 1 has a ground plane 10 and an antenna 17, which can be a metal backplane of a notebook computer LCD screen or a system ground plane of a mobile communication device. The antenna 17 is adjacent to the ground plane 1 , and the antenna 17 has a first operating band 21 and a second operating band 22 . The antenna 17 includes at least a dielectric substrate 11 adjacent to the ground plane 1 . a feeding portion I], the feeding portion 12 is located on the dielectric substrate π, and one end of the feeding portion 12 is connected to a signal source 16, and the other end is an open end 122, the opening of the feeding portion 12 201216561 The width of the feed portion 12 is greater than 2 mm. The feed portion 12 generates a resonant mode 234 at a first specific frequency, and the first specific frequency is located in the second operating frequency band 22. The length of the feed portion 12 can be approximately a quarter-wavelength of the first specific frequency; a short-circuiting radiating portion 13 at least partially located on the dielectric substrate 11, and the short-circuiting radiating portion 13 is connected to the ground plane 10 via a short-circuit point 131, The other end of the short-circuit point 131 is an open end 132. The short-circuit radiating portion 13 is adjacent to a portion of the open end 132 and has a coupling distance 14 with the feed portion 12, and the coupling pitch 14 can be less than 3 mm. Short-circuit radiation portion 13 The coupling pitch 14 is excited by the capacitive coupling of the feeding portion 12, so that the short-circuiting radiating portion 13 generates a resonant mode 231, 233 at a second specific frequency and a third specific frequency, respectively, and the second specific frequency is located. In the first operating frequency band 21, the third specific frequency is located in the second operating frequency band 22, and the length of the short-circuiting radiating portion 13 may be about a quarter of the wavelength of the second specific frequency, or at least Two times the length of the feeding portion 12; and a radiation branch 15, the φ radiation branch 15 is at least partially located on the dielectric substrate 11, and one end of the radiation branch 15 is connected to the feeding portion 12, and the other end thereof The open end 152 of the radiating branch 15 may have a width greater than 2 mm. The radiating branch 15 may generate a resonant mode at a fourth specific frequency, and the fourth specific frequency may be located at the first The operating band 21 may also be located in the second operating band 22, or the radiating branch 15 may generate a resonant mode 232, 235 at the fourth specific frequency and the fifth specific frequency, respectively, and the fourth specific frequency and Fifth specific frequency In the first operating frequency band 21 and 22 of the second operating band, to increase the operational bandwidth of the antenna. 6 201216561 FIG. 2 is a measurement return loss map of the first embodiment of the present invention. The experiment was carried out by selecting the following dimensions in the first embodiment: the ground plane 10 has a length of about 260 mm and a width of about 200 mm; the dielectric substrate η has a length of about 70 mm and a width of about 14 mm and a thickness of about 〇.4_ The glass fiber substrate; the feed portion 12 has a length of about 27 mm, the open end 122 has a width of about 4 mm, and the other end has a width of about 1 mm; the short-circuited radiation portion 13 has a length of about 95 mm and a width of about 1 mm. The length of the radiating branch 15 is about 70 mm 'the open end 152 has a width of about 4 mm and the other end has a width of about 1 mm. From the experimental results obtained, under the definition of 6 dB return loss, the first operating band 21 is sufficient to cover LTE700/GSM850/900 (about 704~960 MHz), and the second operating band 22 is sufficient to cover GSM1800/1900/UMTS/LTE2300. /2500 (m0~2690MHz). Therefore, the dual-band mobile communication device of the present invention generates the two resonant modes by the resonant modes 231, 232, 233, 234, and 235 generated by the feeding portion 12, the short-circuit radiating portion 13, and the light-emitting branch 15 of the antenna. The operating band 21 and the second operating band 22, the dual wideband operation requirements required for the ring and de-φG communication systems. Figure 3 is a block diagram showing a second embodiment of the present invention. The biggest difference from the first embodiment is that the short-circuit radiating portion 33 and the sub-section of the radiating branch 35 are made of a metal sheet by a stamping or cutting technique. Fig. 4 is a structural view showing a third embodiment of the present invention. The biggest difference from the first embodiment and the second embodiment 3 is that the portion of the short-circuiting radiation portion 45 of the radiation branch 45 is made of metal other than stamping or cutting technology. The short-circuit radiating portion 43 and the xenon light-transmitting branch 201216561 45' reduce the overall height of the antenna 47. Using the phase 3 of the first embodiment in FIG. 2, the third embodiment 4 can achieve the double broadband operation requirement required by the 4G communication system under the overall antenna size n... The operation principle of the third embodiment 4 is the same as the first one. The result can be achieved by moderate adjustment, and therefore will not be described again. As described above, the antenna of the dual broadband mobile device of the present invention can effectively excite short circuit (four) W two (four) mode modes by being fed by the power supply unit (in the first operation band and the second operation band, respectively). On the one hand, the feed portion itself can also generate a resonance mode (located in the second operating band), and the radiation branch can generate a single resonant mode first-operating frequency band or a second operating frequency band according to actual needs, or can simultaneously generate two One of these modes (in the first-operating band and the second operating band). By repeating a number of common (four) states, the 4G communication system can achieve the dual broadband operation requirements of mobile communication devices (Gal GSM850/900 and GSM1800/1900/UMTS/LTE2300/2500). ). In summary, the present invention, regardless of its purpose, means, and function, exhibits characteristics that are different from conventional techniques. It is to be noted that the above-described embodiments are merely illustrative of the principles of the invention and its advantages, and are not intended to limit the scope of the invention. Any person skilled in the art can make modifications or variations to the embodiments without departing from the spirit and spirit of the present invention. The scope of the present invention 201216561 The scope of protection should be as described in the patent application scope described later. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a structural view showing a first embodiment of the present invention. Figure 2 is a graph showing the measured return loss of the first embodiment of the present invention. Fig. 3 is a structural view showing a second embodiment of the present invention. Fig. 4 is a structural view showing a third embodiment of the present invention.
【主要元件符號說明】 1’ 3’4 :雙寬頻行動通訊裝置 10 :接地面 11 :介質基板 [2 :饋入部[Description of main component symbols] 1' 3'4 : Dual broadband mobile communication device 10 : Ground plane 11 : Dielectric substrate [2 : Feeding section
!52, 332, 352, 432, 452 :開口端 122, 132, 13, 33, 43 131, 331, 431 14, 34, 44 15, 35, 45 16 17, 37, 47 21 22 短路輻射部 短路點 耦合間距 輻射支路 信號源 天線 第一操作頻帶 第二操作頻帶 •共振模態 231，232, 233, 234, 235!52, 332, 352, 432, 452: Open end 122, 132, 13, 33, 43 131, 331, 431 14, 34, 44 15, 35, 45 16 17, 37, 47 21 22 Short-circuit radiating part short-circuit point Coupling pitch radiating branch signal source antenna first operating band second operating band • resonance modes 231, 232, 233, 234, 235