200840146 九、發明說明： 【發明所屬之技術領域】 本發明係為一種槽孔天線，特B括撼 ..^^ ? 付別疋一種雙饋入多頻 早極槽孔天線，適合應用於行動通訊產品上。 【先前技術】 "、隨者無線通訊科技的快速發展，衍生出相當多的技 術以及i σσ，使得热線通訊已經漸漸融入現今人類的生 _活田中’在現今產品中其天線元件性能的優劣將決定通 訊產品訊號傳輸與接收品質的好壞。台灣專利公告號第 ^57/740唬“供雙頻帶通信裝置用之雙頻帶内部天線，，， 其揭示一種適用於行動通訊裝置之雙頻帶倒F形天線設 =，但该天線設計使用一單饋入，於實際應用時必須電 氣連接到一頻率切換電路（diplexer)，藉由此切換電路分 離出兩個不同之饋入訊號，再將各自的訊號連接至其後 • 端射頻晶片模組。但是此切換電路需佔去系統電路板上 邛分的空間，也會消耗部分功率使得輻射功率下降。 為有效解決此問題，我們提出一種具有雙饋入之多 頻單極槽孔天線，利用其雙饋入之間具有高隔離度的特 性，本天線設計不需於天線饋入端後加入一切換電路， 即可直接將饋入線路連接至後端的射頻晶片模組，同時 本天線設計的有效操作頻寬亦可以涵蓋多個通訊頻帶之 規格要求。此雙饋入之設計方式可以省去該切換電路在 系統電路板上所佔的空間，進而降低整體的研發成本與 6 200840146 : 時間，同時可以減少天線功率的損粍，進而提高天線整 體的輻射功率。 【發明内容】200840146 IX. Description of the invention: [Technical field of the invention] The present invention is a slot antenna, which is specially designed to be used in a multi-frequency early-polar slot antenna. Communication products. [Prior technology] ", the rapid development of wireless communication technology, derived from a considerable number of technologies and i σσ, so that hotline communication has gradually integrated into the human life of today's human _ live Tanaka's performance of its antenna components in today's products The pros and cons will determine the quality of the communication product transmission and reception quality. Taiwan Patent Publication No. 57/740" "Double-band internal antenna for dual-band communication devices, which discloses a dual-band inverted-F antenna configuration for mobile communication devices, but the antenna design uses a single The feed must be electrically connected to a frequency divider circuit in the actual application, whereby the switching circuit separates two different feed signals and then connects the respective signals to the rear RF chip module. However, this switching circuit takes up the space allocated on the system board, and also consumes part of the power to reduce the radiated power. To effectively solve this problem, we propose a multi-frequency single-pole slot antenna with dual feed, using it The high-isolation feature between the double feeds, the antenna design does not need to add a switching circuit after the antenna feeding end, and the feeding circuit can be directly connected to the RF chip module at the back end, and the antenna design is effective. The operating bandwidth can also cover the specifications of multiple communication bands. This dual feed design can save the space occupied by the switching circuit on the system board. Thereby reducing the overall development costs and 6200840146: time, while reducing the power loss expendable antenna, thereby improving the overall radiation power of the antenna of the invention, the content of [].
如上所述，本發明之目的在於提供一種具有雙饋入的 多頻單極槽孔天線。本項發明包含：—介質基板·一接 地面，位於該介質基板上，具有一第一側邊與一第二側 邊，且該第二側邊與該第一侧邊相鄰或是相對；一第一 單極槽孔，位於該接地面上，具有一開路端與一終端， 該開路端位於該接地面之第一側邊，而該終端則朝向該 接地面之内部㈣；-第二單極槽孔，位於該接地面之 上，並與該第一單極槽孔大致平行，且其長度小於該第 一單極槽孔之長度，具有—開路端與—終端，該開路端 位於該接地面之第-側邊，而該終端則朝向該接地面之 内部延伸；一第三單極槽孔，位於該接地面上，盆長产 小於該第二單極槽孔之長度，具有—開路端與端 =路端位於該接地面之第二侧邊，而該終端則朝向該 ΓΓ部延伸’·—第—饋人信號線，用於激發該第 -第二操作頻帶，且該第欠=:弟^作頻帶與 至-第-信號源;及二線之一端電氣連接 單極槽孔，產生一第㈣激發該第三 之-端電氣連接至―第二信號源。 〜線 在本項& 中’藉由單極槽孔可共振出接近四分之 7 200840146 一波長的共振模態，與共振於二分之一波長的傳統槽孔 相比，其所需尺寸較小並能有較大的操作頻寬。並且利 用一饋入信號線同時激發兩個長度接近的單極槽孔，使 其產生兩個相鄰的共振頻帶合成一寬頻的（較低）操作 模態，而另一饋入信號線激發一長度較短的單極槽孔即 可得到一寬頻的（較高）操作模態。另外，兩個饋入信 號各自所激發的單極槽孔其擺放位置大致為相互垂直， 口此兩個饋入彳5號源對於彼此的干擾大幅降低，使得兩 個饋入信號源間能有高隔離度（小於·15dB)的表現。因 此本天線。又。十可以達成適用於GSM850 (824〜894 GHz) / GSM900 (890 ~ 960 MHz) / DCS (1710 ~ 1880 MHz) / PCS (1850 ~ 1990 MHz)/UMTS(⑺Q〜217隨z)頻帶之操作，同時本天 線結構簡單、料㈣，且可直接印刷或㈣於介質基 板上，具有節省製造成本之優點。 【實施方式】 ^麥考第1圖為本發明之單極槽孔天線一實施例1 ， 天線1匕έ •一介質基板11、——接地面12、一第一澤 =孔13 :「第二單極槽孔14、一第三單極槽孔b、一 二妬='號線16及一第二饋入信號線17。其中該介質 ::ι為：行動通訊裝置之系統電路板，而該接地面12 地面二二1^的方式形成於該介f基板11上。又該接 第一侧邊121及一第二側邊⑵，且該第 ^ 共該弟一側邊121相對。該第一單極槽孔13 200840146 位於該接地面u上，具有一開路端與終端，該開 於該接地面12之第—側邊121，而該終端則朝向該接地 面12之㈣延伸。㈣第二單極射U4㈣ 上，並與㈣-單極槽孔13大致平行， =As described above, it is an object of the present invention to provide a multi-frequency monopole slot antenna having dual feed. The present invention comprises: a dielectric substrate, a ground plane, on the dielectric substrate, having a first side and a second side, and the second side is adjacent or opposite to the first side; a first monopole slot, located on the ground plane, having an open end and a terminal, the open end being located at a first side of the ground plane, and the terminal facing the interior of the ground plane (4); a monopole slot, located above the ground plane, substantially parallel to the first monopole slot, and having a length less than a length of the first monopole slot, having an open end and a terminal, the open end being located a first side of the ground plane, wherein the terminal extends toward the interior of the ground plane; a third monopole slot is located on the ground plane, and the length of the pot is less than the length of the second monopole slot - an open end and a terminal = a road end is located on a second side of the ground plane, and the terminal extends a '--feeder signal line toward the crotch portion for exciting the first-second operation band, and the The first owe =: the brother ^ for the frequency band and to - the - signal source; and one of the two lines of electrical connection monopole Holes, (iv) generating a first excitation of the third - terminal electrically connected to - a second signal source. The ~ line in this item & 'resonates out nearly four-quarters with a single-pole slot. 200840146 One-wavelength resonant mode, compared to the conventional slot that resonates to one-half of the wavelength. Smaller and can have a larger operating bandwidth. And using a feed signal line to simultaneously excite two single-pole slots of similar length, so that two adjacent resonant frequency bands are combined to form a wide (lower) operating mode, and the other feeding signal line is excited by one. A shorter (longer) operating mode can be obtained with a shorter length of monopole slot. In addition, the single-pole slots excited by the two feed signals are arranged substantially perpendicular to each other, and the interference of the two feed-in sources 5 to each other is greatly reduced, so that the two feed signals can be mutually High performance (less than ·15dB) performance. Therefore this antenna. also. Ten can achieve the operation of GSM850 (824~894 GHz) / GSM900 (890 ~ 960 MHz) / DCS (1710 ~ 1880 MHz) / PCS (1850 ~ 1990 MHz) / UMTS ((7) Q ~ 217 with z) band, The antenna has the advantages of simple structure, material (4), and can be directly printed or (4) on the dielectric substrate, which has the advantages of saving manufacturing cost. [Embodiment] FIG. 1 is a first-pole slot antenna according to the first embodiment of the present invention, an antenna 1 一 a dielectric substrate 11, a ground plane 12, a first screen = hole 13: a second monopole slot 14, a third monopole slot b, a second 妒 = 'number line 16 and a second feed signal line 17. The medium:: ι is: the system board of the mobile communication device, The grounding surface 12 is formed on the ground surface of the substrate 11. The first side 121 and the second side (2) are connected to each other, and the first side 121 is opposite. The first monopole slot 13 200840146 is located on the ground plane u, has an open end and a terminal, and is open to the first side 121 of the ground plane 12, and the terminal extends toward the (four) of the ground plane 12. (d) The second unipolar shot U4 (4) is substantially parallel to the (4)-monopole slot 13
:單極槽孔13之長度，具有-開路端與終端，該開：： :=接地面12之第一側邊121，而該終端則朝向該接 地面12之内部延伸。該第三單極槽孔㈣位於該接地面 12上，其長度小於該第二單極槽㈣之長度，具 路端與終端，該開路端位於該接地面n邊122 > 而該終端則朝向該接地面之内部延伸，另外該第三單極 槽孔15具有至少-次f折使其在該接地面12所佔面積減 ^第—饋人信號線16用於激發該第—單極槽孔13與 第一單極槽孔14，產生一第一操作頻帶21與一第二操作 頻帶22，且該第-饋人信號線16之—端電氣連接至一第 ^入信㈣⑹。而該第二饋人信號㈣用於激發該 第三單極槽孔15，產生一第三操作頻帶23，且該第二饋 入信，線17之-端電氣連接至—第二饋人信號源⑺。 第2圖為本發明天線一實施例丨之反射係數、 Sr)及隔離度（Su)量測結果。在本實施例！中，其接地 面11之長度約為100mm、寬度約為6〇_，天線位於接 地面11之上方區間，其所佔面積約為6〇><14_2，主要 包含一第一單極槽孔13、一第二單極槽孔14及一第三單 極槽孔15，且本天線設計係以印刷或蝕刻技術與接地面 11同時形成於一厚度為0.8 mm的FR4介質基板1〇之上； 9 200840146The length of the monopole slot 13 has an open end and a terminal, the opening::: = the first side 121 of the ground plane 12, and the terminal extends toward the interior of the ground 12. The third monopole slot (4) is located on the ground plane 12, and has a length smaller than the length of the second monopole slot (4), having a road end and a terminal, the open end being located at the ground plane n side 122 > and the terminal Extending toward the interior of the ground plane, the third monopole slot 15 has at least a f-fold to reduce the area occupied by the ground plane 12 - the feed signal line 16 is used to excite the first monopole The slot 13 and the first monopole slot 14 generate a first operating band 21 and a second operating band 22, and the end of the first-feeder signal line 16 is electrically connected to an input signal (4) (6). The second feed signal (4) is used to excite the third monopole slot 15 to generate a third operating band 23, and the second feed signal, the end of the line 17 is electrically connected to the second feed source. (7). Fig. 2 is a measurement result of reflection coefficient, Sr) and isolation (Su) of an antenna according to an embodiment of the present invention. In this embodiment! The ground plane 11 has a length of about 100 mm and a width of about 6 〇. The antenna is located above the ground plane 11 and occupies an area of about 6 〇><14_2, and mainly includes a first unipolar slot. a hole 13 , a second monopole slot 14 and a third monopole slot 15 , and the antenna design is formed on the FR4 dielectric substrate having a thickness of 0.8 mm simultaneously with the ground plane 11 by printing or etching techniques. On; 9 200840146
該第一單極槽孔13之長度約為49mm、寬度約為2mm ; 該第二單極槽孔14之長度約為43mm、寬度約為; 该第三單極槽孔15之長度約為17mm、寬度約為 本實施例1具有三個共振模態：一第一操作頻帶21、一 第二操作頻帶22及一第三操作頻帶23。該第一操作頻帶 21與該第二操作頻帶22合成一寬頻頻帶，約有 (795〜l〇45MHZ)的操作頻寬，可以同時涵蓋GSM85〇及 GSM900頻帶，且在需求頻帶（824〜96〇MHz)内的返回損 ，皆有高於6 dB的表現；而該第三操作頻帶23之操作頻 寬約有475MHZ(1700〜2175MHZ) ’可以同時涵蓋⑽頻 帶、PCS頻帶及UMTS頻帶，在所需的頻帶範圍（⑺〇〜 2170MHz)内的返回損失值亦皆高於6dB的純。另外在 隔離度24方面，其隔離度在所需頻帶範圍内均小於 dB ’已能夠符合實際應用要求。 3圖及第4圖各為本發明天線-實施例1於860 MHz與925MHZ之輕射場型圖。由所得之結果，天線第 ^桑作頻帶21與第二操作頻帶22之輕射場型與傳統内藏 式平板天線共振於相同頻率時的輻射場型相似 5 圖到第7圖分別為本發明天線一實施例】於1795 测顺及2045麻之輻射場型圖。由所得之結果，天 線第二％作頻帶23内不同頻率於 並適合於行動通訊裝置之應類似’ 第8 ®及第9 ®分別為本發明天 例及第二其他實施例。第—實施例8和實施例 200840146 .結構大致上均相同，唯第一實施例8之第-單極槽孔83 •及第二單極槽孔84經由至少一次彎折而形成一倒[形。 而第二實施例9亦和實施例1的整體結構大致上相同， 唯其第三單極槽孔95之開路端位於該接地面12之第二侧 邊，且該第二側邊922與該第一側邊121相鄰， 又該第三單極槽孔95大致為-倒L形。上述說明的兩個 其他實施例8、9皆可順利激發出三個共振模態，並能 ⑩夠達到與實施例1相似的操作特性。 以上β兒明中所述之實施例僅為說明本發明之原理及 功效，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 發明之權利範圍如後述之申請專利範圍所列。 【圖式簡單說明】 第1圖為本發明天線一實施例結構圖。 鲁第2圖為本發明天線之一實施例之反射係數（心1、s22)及 隔離度（S2〇量測結果。 第3圖為本發明天線一實施例於86〇ΜΉζ之輻射場型圖。 第4圖為本發明天線一實施例於925 之輻射場型圖。 第5圖為本發明天線一實施例於1795 mjjz之輻射場型圖。 第6圖為本發明天線一實施例於192〇 mhz之輻射場型圖。 第7圖為本發明天線一實施例於2〇45 mhz之輻射場型圖。 第8圖為本發明天線第一其他實施例結構圖。 第9圖為本發明天線第二其他實施例結構圖。 11 200840146The first monopole slot 13 has a length of about 49 mm and a width of about 2 mm; the second monopole slot 14 has a length of about 43 mm and a width of about; the third monopole slot 15 has a length of about 17 mm. The width of the first embodiment has three resonant modes: a first operating band 21, a second operating band 22, and a third operating band 23. The first operating frequency band 21 and the second operating frequency band 22 are combined into a broadband frequency band, and have an operating bandwidth of (795~1〇45MHZ), which can cover both the GSM85〇 and GSM900 bands, and in the required frequency band (824~96〇) The return loss in MHz) has a performance higher than 6 dB; and the operating bandwidth of the third operating band 23 is about 475 MHz (1700 to 2175 MHz), which can cover both the (10) band, the PCS band, and the UMTS band. The return loss values in the required frequency range ((7) 〇 ~ 2170 MHz) are also higher than 6 dB pure. In addition, in terms of isolation 24, the isolation is less than dB' in the required frequency band, which can meet the requirements of practical applications. 3 and 4 are each a light field pattern of the antenna of the present invention - Example 1 at 860 MHz and 925 MHz. As a result of the obtained, the radiation field patterns of the antennas of the antenna band 21 and the second operating band 22 are similar to those of the conventional built-in panel antenna at the same frequency. 5 to 7 are antennas of the present invention, respectively. An embodiment is shown in 1795 for the radiation pattern of the 2045 hemp. As a result of the results, the second % of the antenna is used for different frequencies in the frequency band 23 and is suitable for the mobile communication device. The 8th and 9th, respectively, are the invention and the second embodiment. - Embodiment 8 and Embodiment 200840146. The structures are substantially the same, except that the first-monopole slot 83 of the first embodiment 8 and the second monopole slot 84 are formed by at least one bending. . The second embodiment 9 is substantially the same as the overall structure of the first embodiment, except that the open end of the third monopole slot 95 is located at the second side of the ground plane 12, and the second side 922 and the The first side 121 is adjacent to each other, and the third monopole slot 95 is substantially inverted-L-shaped. Both of the other embodiments 8 and 9 described above can smoothly excite three resonance modes and can achieve similar operational characteristics as in the first embodiment. The embodiments described above are merely illustrative of the principles and effects of the invention and are not intended to limit the invention. Therefore, those skilled in the art can make modifications and changes to the above embodiments without departing from the spirit of the invention. The scope of the invention is set forth in the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a structural view showing an embodiment of an antenna according to the present invention. Lu 2 is a reflection coefficient (heart 1, s22) and isolation (S2 〇 measurement result of one embodiment of the antenna of the present invention. FIG. 3 is a radiation pattern diagram of an antenna of the present invention at 86 为本. Figure 4 is a radiation pattern diagram of an antenna according to an embodiment of the present invention at 925. Figure 5 is a radiation pattern diagram of an antenna according to an embodiment of the present invention at 1795 mjjz. Figure 6 is an embodiment of an antenna according to the present invention at 192. Radiation pattern of 〇mhz. Fig. 7 is a radiation pattern diagram of an antenna according to an embodiment of the present invention at 2〇45 mhz. Fig. 8 is a structural view of the first embodiment of the antenna of the present invention. A structural diagram of the second embodiment of the antenna. 11 200840146
【主要元件符號說明】 I :本發明天線一實施例 11 :介質基板 12 :行動通訊裝置之系統接地面 121 :系統接地面之第一侧邊 122 :系統接地面之第二側邊 13 :第一單極槽孔 14 :第二單極槽孔 15 ••第三單極槽孔 16 :第一饋入信號線 161 :第一信號源 17 :第二饋入信號線 171 :第二信號源 21 :第一操作頻帶（反射係數 Sll 量測結果） 22 :第二操作頻帶（反射係數 Sll 量測結果） 23 :第三操作頻帶（反射係數 S22 量測結果） 24 :隔離度（反射係數S2i量測結果） 83 :第一單極槽孔 84 :第二單極槽孔 922 :系統接地面之第二側邊 95 :第三單極槽孔 12[Main component symbol description] I: Antenna of the present invention: Embodiment 11: dielectric substrate 12: system ground plane 121 of the mobile communication device: first side 122 of the system ground plane: second side 13 of the system ground plane: a single pole slot 14: a second monopole slot 15 • a third monopole slot 16: a first feed signal line 161: a first signal source 17: a second feed signal line 171: a second source 21 : First operation band (reflection coefficient S11 measurement result) 22 : Second operation band (reflection coefficient S11 measurement result) 23 : Third operation band (reflection coefficient S22 measurement result) 24 : Isolation degree (reflection coefficient S2i Measurement result) 83: first monopole slot 84: second monopole slot 922: second side of system ground plane 95: third monopole slot 12