200908445 請揭示最能顯示發明特徵的化 八、本案若有化學式時 學式： 九、發明說明： 【發明所屬之技術領域】 特別是一種具有多頻 本發明係為一種行動通訊天線 操作之單極槽孔天線。 【先前技術】 隨著無線通訊的快速發展，在無線通訊產品中 線扮演的角色更加重要。尤盆， ,. ^兀再在輕、溥、短、小的趨勢 天線的厚度將影響一個產品的價值，而此類具 有内臧j天線之無線通訊產品巾又大多以平板天線為主 。然而廷類的手持式行動裝置平板天線之高度大約需要 、mm 再加上機殼及其他相關元件，往往使得手持 式行動裝置整體的厚度不易低於⑴以下。因此這類 的天線設計在應關薄形的手持式行動裂置，如薄形手 機（:手機厚度10晒左右或更小），將會面臨天線高 度過高的問題，進而無法迎合手機薄形化的趨勢。因此 具有平面印刷式特性的天線設計將可提供一種適合應 用於薄形化手持式行動裝置的可能，而印刷槽孔天線即 符/、γ一種設計。然而傳統的槽孔天線其結構為二分之 一波長共振，將導致其在應用於手持式行動裝置（如手 200908445 機）時，面臨天線尺寸較大的問 計如美國專利·，_9號“具;單=== 孔天線師 andS1_ennawithSin_ 二分之一波長共振之槽孔天線。此類的槽孔: =其：需之共振波長較長，勢必將佔據較大的接地 因此較不適合應用於手持式行動通訊裝置内。 = 文善上述問題，我們提出—種四分之—波長共振的 早極槽孔天線設計，補可將天線直騎财介質 二 =製程成本丄同時可將天線之厚度降至最低：使 裝置内。 4 &、小的手持式行動 【發明内容】 ^上所述，本發明之目的在於提供—種具有多頻相 作之單極槽孔天線，以符合 ， 何口曰别仃動通訊設備的需求。 本發明係包括··一介質基板；一接地面；一第 二：第二單極槽孔；及一饋入微帶線。該介質基 有-第-表面及-相對於該第—表面之第二表面， ^無線通訊裝置之系統電路板；該接地面位於該介質 二板之第-表面上；該第一與第二單極槽孔皆位於該接 地面上’用於分別產生一第一（較低）與-第二（較 南）操作頻帶’並皆具有-起始端及—末端，該起始端 位於該接地面之-邊緣，該末端則朝向該接地面之内部 延伸；該饋人微帶線位於該介質基板之第二表面上，其 200908445 開口端穿過該第一單極槽孔與該第二單極槽孔，並與該 饋入微帶線之訊號端分別位於該第一單極槽孔與該第一 單極槽孔之兩側。 【實施方式】 第1圖為本發明單極槽孔天線一實施例，包括. 一介質基板10，具有一第一表面及一相對於該第一表面 之第二表面，為一無線通訊裝置之系統電路板；一接地 面11，位於該介質基板10之第一表面上；—帛一單極槽 孔12，位於該接地面丨丨上，用於產生一第一（較低 作頻帶，具有一起始端121及一末端122，該起始端 121位於該接地面之一邊緣lu ，該末端122則朝向該 接地面U之内部延伸；一第二單極槽孔13，位於該接^ 面11上，與該第一單極槽孔12大致平行，用於產生一第 二（較高）操作頻帶，具有一起始端131及一末端 132，該起始端位131於該接地面之一邊緣^ ，該末 端132則朝向該接地面丨丨之内部延伸，而該第一單極槽 孔12長度大於該第二單極槽孔13 ;及一饋入微帶線μ， 位於該介質基板10之第二表面上，其開口端142穿過該 第一單極槽孔12與該第二單極槽孔13，並與該饋入微帶 線14之訊號端141分別位於該第一單極槽孔口與該第二 早極槽孔13之兩側，而該饋入饋入微帶線14為一直線 狀。 200908445 第2圖為本發明天線之—實施例的返回損失實驗 量測結果圖，在本實施例中，該接地面u之長度約為 100mm、寬度約為40mm ;該第一單極槽孔12用來激發 該天線第-（較低）操作頻帶21，其寬度約為5麵，而 由於介質基板之介電效應將使得其長度可小於四分之一 波長共振’·該第二單極槽孔13之寬度約為5_，其長度 f小於四分之一波長共振，並用來激發該天線第二（較 鬲）操作頻帶22。由實際量測所得到的實驗結果，在返 回才貝失小於6dB的定義下，天線阻抗頻寬可涵蓋無線行200908445 Please reveal the best way to show the characteristics of the invention. 8. If there is a chemical formula in this case: 9. Description of the invention: [Technical field of invention] In particular, a multi-frequency invention is a unipolar operation of a mobile communication antenna. Slot antenna. [Prior Art] With the rapid development of wireless communication, the role played by the wireless communication product line is more important.尤盆, ,. 兀 兀 兀 兀 兀 兀 兀 兀 兀 兀 兀 兀 兀 兀 兀 兀 兀 兀 兀 兀 兀 兀 兀 兀 兀 兀 兀 兀 兀 兀 兀 兀 兀 兀 兀 兀 兀 兀 兀 兀 兀 兀 兀 兀 兀 兀 兀However, the height of the handheld mobile device panel antenna of the Ting type is about MM, plus the casing and other related components, which tends to make the overall thickness of the handheld mobile device not less than (1). Therefore, such antennas are designed to be thin and hand-held, such as thin mobile phones (the thickness of the mobile phone is about 10 or less), which will face the problem of too high antenna height, which will not be able to cater to the thin shape of the mobile phone. Trends. Therefore, an antenna design with planar printing characteristics will provide a possibility to be used for thinning handheld mobile devices, and a printed slot antenna is a design of /, γ. However, the traditional slot antenna is constructed with a half-wave resonance, which will result in a larger antenna size when applied to a handheld mobile device (such as the hand 200908445). For example, US Patent No. _9 Single === Hole Antenna Division andS1_ennawithSin_ One-wavelength resonant slot antenna. This type of slot: =: It requires a longer resonant wavelength, which is bound to occupy a larger ground and is therefore less suitable for handheld use. In the mobile communication device. = Wenshan above, we propose a four-minute-wavelength resonance early-polar slot antenna design, which can make the antenna directly ride the media 2 = process cost 丄 while reducing the thickness of the antenna To the lowest: in the device. 4 &, small handheld action [invention] The above description, the object of the present invention is to provide a multi-frequency phase-connected monopole slot antenna to meet, what The invention relates to a need for a communication device. The invention comprises: a dielectric substrate; a ground plane; a second: a second monopole slot; and a feed microstrip line. The dielectric substrate has a - surface and - relative to the first a second surface of the surface, a system board of the wireless communication device; the ground plane is located on the first surface of the second plate of the medium; the first and second monopole slots are located on the ground plane for respectively generating a first (lower) and a second (shorter south) operating band 'both having a start end and an end end, the start end being located at an edge of the ground plane, the end extending toward the inside of the ground plane; The feed microstrip line is located on the second surface of the dielectric substrate, and the open end of the 200908445 passes through the first monopole slot and the second monopole slot, and is located at the signal end of the feed microstrip line The first monopole slot and the two sides of the first monopole slot. [Embodiment] FIG. 1 is an embodiment of a monopole slot antenna according to the present invention, including: a dielectric substrate 10 having a first surface And a second circuit surface of the first surface is a system circuit board of a wireless communication device; a grounding surface 11 is located on the first surface of the dielectric substrate 10; and a monopole slot 12 is located at the On the ground plane, used to generate a first (lower frequency) The strip has a starting end 121 and an end 122. The starting end 121 is located at one edge lu of the grounding surface, and the end 122 extends toward the inside of the grounding surface U. A second monopole slot 13 is located at the strip. The surface 11 is substantially parallel to the first monopole slot 12 for generating a second (higher) operating frequency band having a starting end 131 and an end 132, the starting end position 131 being on one of the ground planes The end 132 extends toward the inside of the ground plane ,, and the first monopole slot 12 has a length greater than the second monopole slot 13; and a feed microstrip line μ is located on the dielectric substrate 10. On the second surface, the open end 142 passes through the first monopole slot 12 and the second monopole slot 13 , and the signal end 141 of the feed microstrip line 14 is located in the first monopole slot. The port and the second early pole slot 13 are both sides, and the feed feeding microstrip line 14 is linear. 200908445 FIG. 2 is a diagram showing experimental results of return loss of an antenna according to an embodiment of the present invention. In this embodiment, the ground plane u has a length of about 100 mm and a width of about 40 mm; and the first monopole slot 12 Used to excite the antenna's - (lower) operating band 21, which has a width of about 5 planes, and due to the dielectric effect of the dielectric substrate, its length can be less than a quarter wavelength resonance '· the second monopole slot The aperture 13 has a width of about 5 mm, a length f that is less than a quarter wavelength resonance, and is used to excite the antenna (secondary) operating band 22 of the antenna. The experimental results obtained by actual measurement, under the definition of returning less than 6dB, the antenna impedance bandwidth can cover wireless lines.
動通訊系統 GSM850 、GSM900 、DCS、PCS、UMTS 及WLAN之六頻操作需求。 第3 A圖為本發明天線之一實施例於900 MHz之 輻射場型圖。由量測結果來看，天線第一（較低）操作 頻帶21之輻射場型與傳統内藏式平板天線共振於同一頻 率時的輻射場型相似。第3B圖、第3C圖及第3D圖為本 發明天線一貫施例於1800、2050和2450 MHz之輻射場型 圖 。由量測結果可知，天線第二（較高）操作頻帶22内不 同頻率之輕射場型具有一相似特性，也就是說頻帶内之 場型變化不大，相對穩定。 第4A圖及第4B圖為本發明天線之一實施例於天線 第一（較低）操作頻帶21及天線第二（較高）操作頻帶 22内之增益與輻射效率圖。由所得之結果，在GSM850 頻帶内其天線增益41大致從-〇.2dBi變化至l.OdBi，而輻 200908445 射效率42則大致從45%變化至65% :在GSM_頻帶内 ，天線增益4丨大致介於0.8^4^，而輻射效率42則大 致介於58〜65% ;在、似及觀巧頻帶内其天線 增益43大致介於3>1〜4.7dBi，㈣射效率44則大致介於 65〜85% ;在wlAN頻帶内其天線增益幻皆大於 ，而輻射效率44則皆大於65%。以上說明了該天線之輻 射特性是適合於行動通訊裝置之應用需求。 …第5圖、第6圖及第7圖分別為本發明天線之第一 第一及弟二其他實施例結構圖。本發明天線第一其他 實施例之第一單極槽孔52具有一次彎折使該單極槽孔天 線可適用於-寬度較小的手機内，同時該饋人微帶線％ 亦具有一次彎折來調整天線之阻抗匹配；本發明天線第 二其他實施例之饋入微帶線64具有3次彎折，使得其大 致形成一步階式形狀；本發明天線第三其他實施例之接 地面相對於該饋入微帶線開口端之區間75具有一彎折， 使得該接地面71及該饋入微帶線14均大致形成一倒^形 狀。第5〜7圖之三個其他實施例均可以達成與本發明說 明中第1圖之實施例相似之多頻操作特性。 以上說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。 200908445 【圖式簡單說明】 第1圖為本發明之一實施例之上視圖。 第2圖為本發明之一實施例的返回損失量測結果圖。 第3 A圖為本發明之一實施例於900 MHz之輻射場型圖 〇 第3B圖為本發明之一實施例於18〇〇 MHz之輻射場型圖 〇 第3C圖為本發明之一實施例於2〇5〇 mhz之輻射場型圖 〇 第3D圖為本發明之一實施例於2450 MHz之輻射場型圖 〇 第4A圖為本發明之一實施例於天線第一（較低）操作 頻帶之增益與輻射效率圖。 第4B圖為本發明之一實施例於天線第二（較高）操作 頻帶之增益與輻射效率圖。 第5圖為本發明之第一其他實施例結構圖。 第6圖為本發明之第二其他實施例結構圖。 第7圖為本發明之第三其他實施例結構圖。 12 200908445 【主要元件符號說明】 10 :介質基板 11、 71 :接地面 111 、711 :接地面之一邊緣 12、 52 :第一單極槽孔 121 、521 :第一單極槽孔之起始端 122 、522 :第一單極槽孔之末端 13 :第二單極槽孔 ( 131 ••第二單極槽孔之起始端 132 :第二單極槽孔之末端 14 、54 、64 :饋入微帶線 141 、541、641 :饋入微帶線之訊號端 142 、542、642 :饋入微帶線之開口端 21 :天線第一（較低）操作頻帶 22 :天線第二（較高）操作頻帶 41、 43 :天線增益 \ ' 42、 44 :天線輻射效率 75 :接地面相對於饋入微帶線開口端之區間 13Dynamic communication system Six-frequency operation requirements for GSM850, GSM900, DCS, PCS, UMTS and WLAN. Figure 3A is a radiation pattern of an embodiment of an antenna of the present invention at 900 MHz. From the measurement results, the radiation pattern of the first (lower) operating band 21 of the antenna is similar to that of the conventional built-in panel antenna at the same frequency. Fig. 3B, Fig. 3C and Fig. 3D are radiation pattern diagrams of the antennas of the present invention consistently applied at 1800, 2050 and 2450 MHz. It can be seen from the measurement results that the light field type of different frequencies in the second (higher) operating frequency band 22 of the antenna has a similar characteristic, that is, the field pattern in the frequency band does not change much and is relatively stable. 4A and 4B are gain and radiation efficiency diagrams of one embodiment of the antenna of the present invention in the first (lower) operating band 21 of the antenna and the second (higher) operating band 22 of the antenna. As a result, the antenna gain 41 varies from -〇.2dBi to l.OdBi in the GSM850 band, while the radiation 200908445 radiation efficiency 42 changes from approximately 45% to 65%: in the GSM_band, the antenna gain is 4丨 is roughly between 0.8^4^, and the radiation efficiency 42 is roughly between 58 and 65%. The antenna gain 43 is approximately 3>1~4.7dBi in the similar and apparent frequency bands, and (4) the radiation efficiency is approximately It is between 65 and 85%; its antenna gain is greater than the illusion in the wlAN band, and the radiation efficiency 44 is greater than 65%. The above illustrates that the radiating characteristics of the antenna are suitable for the application needs of the mobile communication device. Fig. 5, Fig. 6, and Fig. 7 are structural views of the first and second embodiments of the antenna of the present invention, respectively. The first monopole slot 52 of the first embodiment of the antenna of the present invention has a single bend so that the monopole slot antenna can be applied to a mobile phone having a small width, and the donor microstrip line % also has a bend. Folding to adjust the impedance matching of the antenna; the feeding microstrip line 64 of the second embodiment of the antenna of the present invention has three bends so that it substantially forms a one-step shape; the grounding surface of the third other embodiment of the antenna of the present invention is opposite to the The section 75 fed into the open end of the microstrip line has a bend such that the ground plane 71 and the feed microstrip line 14 both form a substantially inverted shape. The three other embodiments of Figs. 5 to 7 can achieve multi-frequency operation characteristics similar to those of the first embodiment of the present invention. The embodiments described in the above description are merely illustrative of the principles and functions 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. 200908445 [Simplified Schematic Description] Fig. 1 is a top view of an embodiment of the present invention. Fig. 2 is a graph showing the results of return loss measurement according to an embodiment of the present invention. 3A is a radiation field pattern at 900 MHz according to an embodiment of the present invention. FIG. 3B is a radiation field pattern of an embodiment of the present invention at 18 〇〇 MHz. FIG. 3C is an implementation of the present invention. Example of a radiation field pattern of 2〇5〇mhz 〇 3D is a radiation field pattern of an embodiment of the invention at 2450 MHz. FIG. 4A is an embodiment of the invention at the antenna first (lower) Gain and radiation efficiency plots for the operating band. Figure 4B is a graph of gain and radiation efficiency for the second (higher) operating frequency band of an antenna in accordance with one embodiment of the present invention. Figure 5 is a structural view of a first other embodiment of the present invention. Figure 6 is a structural view of a second other embodiment of the present invention. Figure 7 is a structural view of a third other embodiment of the present invention. 12 200908445 [Description of main component symbols] 10: dielectric substrate 11, 71: ground planes 111, 711: one edge of the ground plane 12, 52: first monopole slot 121, 521: the starting end of the first monopole slot 122, 522: the end of the first monopole slot 13: the second monopole slot (131 • the beginning end of the second monopole slot 132: the end of the second monopole slot 14 , 54 , 64 : feed Into the microstrip line 141, 541, 641: the signal end 142, 542, 642 fed into the microstrip line: the open end 21 fed into the microstrip line: the antenna first (lower) operating band 22: the second (higher) operation of the antenna Band 41, 43: Antenna gain \ '42, 44: Antenna radiation efficiency 75: Ground plane relative to the opening end of the microstrip line