1353688 j , 九、發明說明： 【發明所屬之技術領域】 本發明係為一種多頻行動通訊裝置天線，特別是一種 使用共面耦合式饋入之行動通訊裝置天線，適合應用於 GSM850/900/1800/1900/UMTS 多頻之操作。 【先前技術】 由於無線通訊科技快速蓬勃發展，所衍生的無線通訊 馨技術以及產品也越來越多樣化。目前傳統手機天線多半以 倒F形天線或單極天線為主要設計類型，而此類天線所激 • 發的最低共振模態主要為四分之一波長共振模態。加上天 . 線特別於低頻900MHz時需要較長的有效輻射共振路徑， 因此多半會將天線輻射共振路徑使用蜿蜒或是多次彎折之 設計方式來降低天線佔據之空間，使得天線能夠内藏於行 動通訊裝置之内部。如台灣專利公告號第Π45,451號“倒F 型天線”，其主要揭示一種使用四分之一波長共振之内藏 •式手機天線即為一例。但是使用蜿蜒或多次彎折等設計技 巧相對的會造成天線的操作頻寬縮減，而使得天線並不容 易達成目前無線廣域網路（WWAN, Wireless Wide Area Network) GSM850/900/1800/1900/UMTS五頻頻段之多頻操作。1353688 j , IX. Description of the invention: [Technical field of the invention] The present invention is a multi-frequency mobile communication device antenna, in particular, a mobile communication device antenna using a coplanar coupled feed, suitable for use in GSM850/900/ 1800/1900/UMTS multi-frequency operation. [Prior Art] Due to the rapid development of wireless communication technology, the wireless communication technology and products derived from it have become more and more diverse. At present, most of the traditional mobile phone antennas are mainly inverted F-shaped antennas or monopole antennas, and the lowest resonant mode excited by such antennas is mainly a quarter-wave resonant mode. In addition, the line requires a long effective radiation resonance path especially at a low frequency of 900 MHz. Therefore, the antenna radiation resonance path is often used in a 蜿蜒 or multiple bend design to reduce the space occupied by the antenna, so that the antenna can be built in. Inside the mobile communication device. For example, Taiwan Patent Publication No. 45,451 “Inverted F-type Antenna” mainly discloses a built-in mobile phone antenna using quarter-wave resonance. However, the design technique of using 蜿蜒 or multiple bends will cause the operation bandwidth of the antenna to be reduced, and the antenna is not easy to reach the current wireless wide area network (WWAN) GSM850/900/1800/1900/ Multi-frequency operation of the UMTS five-frequency band.
在本發明中我們提出一種適用於行動通訊裝置的多頻 天線設計’其天線操作頻寬在低頻頻段可涵蓋GSM85〇/9〇〇 (824〜960 MHz) ’在南頻頻段則可涵蓋GSM18〇〇/19〇〇/UMTS (㈣〜2Π0ΜΗΖ)之通訊頻帶的μ ,而此天線設計主要以 6 1353688 創新的共面耦合式饋入技術取代傳統的直接饋入方式， ^經^適當調整使得天線之八分之—波長共振模態（第一 /、振杈態）可以有效被激發並具有不錯的阻抗匹配，可藉 ^降低天線之共振路徑長度’進而使得天㈣積能夠有效 、广咸同犄本°又5十天線結構簡單易於使用姓刻、印刷或射 出成形技術形成於介f基板上，使得製作成本得以降低。 故本發明天線適合應用於行動通訊裝置中。 【發明内容】 如上所述’本發明之目的在於提供—種行動通訊裝置 天線’其不僅可以涵蓋GSM85〇/9_8〇〇/i9〇〇/u廳多頻頻帶 之操作’同時天線適合内藏於行動通訊裝置内部，因此本 發明天線相當適合應用於手機等行動通訊裝置。In the present invention, we propose a multi-frequency antenna design suitable for mobile communication devices. 'The antenna operation bandwidth can cover GSM85〇/9〇〇(824~960 MHz) in the low frequency band. 'In the south frequency band, it can cover GSM18〇. 〇 / 19 〇〇 / UMTS ((4) ~ 2 Π 0 ΜΗΖ) communication band μ, and this antenna design mainly replaces the traditional direct feed mode with 6 1353688 innovative coplanar coupled feed technology, ^ appropriately adjusted to make the antenna The eighth-wavelength resonance mode (first /, vibrating state) can be effectively excited and has a good impedance matching, which can reduce the resonant path length of the antenna, which makes the sky (four) product effective, wide and salty The 又 又 又 5 天线 天线 antenna structure is simple and easy to use on the substrate, the printing or injection molding technology is formed on the substrate, so that the manufacturing cost can be reduced. Therefore, the antenna of the present invention is suitable for use in a mobile communication device. SUMMARY OF THE INVENTION As described above, 'the object of the present invention is to provide a mobile communication device antenna' which can cover not only the operation of the GSM85〇/9_8〇〇/i9〇〇/u hall multi-frequency band, but also the antenna is suitable for being embedded in The antenna of the present invention is quite suitable for use in a mobile communication device such as a mobile phone.
本發明天線，包含：一電路板；一接地面，位於該電 上表面上，具有一邊緣，且該邊緣位於該電路板内 部丄使該電路板具有—無接地面區間，同時該無接地面區 間罪近該電路板之一邊緣處；及一天線元件，包含：一介 質基板’位於該電路板之無接地面區間之該邊緣處，且大 致垂直該電路板，同時該介質基板全部位於該電路板之同 -側；-輻射金棒位於該介質基板之一表面上，其係 以蝕刻、印刷或射出成形技術形成於該介質基板上· 饋入金棒位於該介質基板之一表面上，且與該輕射金 屬部同-表面’係㈣刻、印刷或射出成形技術形成於該 介質基板上，包含··一第一金屬元件，其一端電氣連接： 7 1353688 該輕射金屬部；—裳-厶凰；# ^ 板益接地… 端經由位於該電路 ，:^地面_之—饋人金屬連接線電氣連接至-訊號源 '弟二金屬元件並與該第一金屬元件之間具有一特定間 距’戎特定區間一妒雨I ^ 入旦. _ 奴而要小於2mm，以提供足夠之電容耦 及知路金屬兀件，其一端電氣連接至該第一金屬 2屈、1另—端經由位於該電路板之無接地面區間之一短路 孟屬連接線短路至兮接士 故八居4 3接地面上述之饋人金屬連接線及短 至連接線係以蝕刻或印刷技術形成於該電路板上。 政在本項發明天線中，我們採用耦合式饋入機制能有效 ;=第：共振模態(八分之一共振模態）的實部= : 並調整饋入金屬部之尺寸來增加電容性，藉此降 低第-共振模態之電感性’使得第—共振模態頻率附近另 外增加了-個輸入阻抗之虛部零點，再調整短路金屬元件 尺寸使第一共振模態具有良好的阻抗匹配，使其操作 頻寬足以滿足無線廣域網路所規定之GSM85〇/9〇〇 (824〜960 廳)之兩個頻段。同時利用該輻射金屬部之兩個相近長度 之輪射金屬片有效激發第二共振模態（較長路徑之四分之 一波長共振模態）及第三共振模態（較短路徑之四分之一 波長共振模態）合成一寬頻頻段涵蓋gsm18〇〇/i9〇〇_ts (1710〜2170MHz)之三個頻段。 【實施方式】 第1圖為本發明天線—實施例i之結構圖，包含·— 電路板11，一接地面〗2，位於該電路板n之一表面上，具 8 工353688 $邊緣121，且該邊、緣121位於該電路板^内部，使該 电路板11具有一益接地面ρ·ρ弓 …接也面£間111，同時該無接地面區間 二11罪近該電路板u之—邊緣處；及及—天線元和包 ;· -介質基板13!，位於該電路㈣之—無接地面區間 以邊緣處，且大致垂直該電路㈣，同時該介質基 板⑶全部位於該電路㈣之同一側；一輕射金屬部⑶ ::該介質基板之一表面132 i，其係以蝕刻、印刷或 射出成形技術形成於該介質基板131 i ;及—饋入金屬部 134 ，位於該介質基板之―矣 / 表面132上，且與該輕射金屬 :人所表面，係以蝕刻、印刷或射出成形技術形成於 該”貝基板131上，包含一第一金屬元件135，直-端 電氣連接至純射金屬部133 ; 一第二金屬元件136，其 一端經由位於該電路板〗〗無接地面區間之一饋入金屬 連接線14電氣連接至一訊號源16，該第二金屬元件136並 與該第：金屬元件135之間具有一特定間距137 ;及一短 路金屬元件138，其一端電氣連接至該第一金屬元件136 ，另一端經由位於該電路板丨丨之無接地面區間ηι之一短 路金屬連接線15短路至該接地面12。上述之 線Μ及短路金屬連接線15係以钱刻或印刷技術形成於該電 路板11上。 第2圖為本發明天線實施例j的返回損失量測結果。 在實施例1巾簡下収寸進行實驗H電路板η長度 約為！〇7職、寬度約& 4〇醜；接地面12長度約為刚麵 9 1353688 約為4〇m:;天線元件13，包含：―介質基板i3i 、又〜38mm、寬度約為8麵；一輕射金屬部⑶較長丘 振路徨約為38mm (約為900MHz之八分之—波長）、： 短共振路徑約為34mm且其寬度均約為〇5咖； 如存 03 弟金屬70件135長度約為l〇mm、 足度約為！麵；一第二金屬元件136長度約為15_ 4 度約為ι_;及一短路金屬元件138長度約為i2mm、寬 度約為〇.5mm ’該第二金屬元件136並與該第一金屬元件 上35之間具有一特定間距137約為0.5随。由所得實驗結 ^ ’在6dB返回損失的定義下，其第_共振模㈣足以涵 盖GS，_0兩個通訊頻帶’而第二共振模態22及第三共 振模態23合成一寬頻頻段足以涵蓋GSM1800/1900及umts 二個通訊頻帶。 第3圖、第4圖、第5圖、第6圖及第7圖為本發明 天線一實施例1分別於859、925 、1795、1920以及2045 MHz之2維輻射場型圖，而其頻率點下之天線最大增益分 別為 1.03、1.21、3.24、1.79 及3.83 dBi。由所得之結果， 本發明天線在低頻操作頻帶或高頻操作頻帶皆能符合行動 通訊產品的使用需求。 第8圖為本發明天線一其他實施例8之結構圖，包含 •一電路板11 ; 一接地面12，位於該電路板丨】之一表面上 ’具有一邊緣121 ，且該邊緣121位於該電路板内部， 使該電路板11具有一無接地面區間ln ，同時該無接地面 1353688 區間111靠近該電路板n之一邊緣處；及及一天線元件13 i包含：一介質基板831，位於該電路fell之一無接地面 區間111之該邊緣處，且大致垂直該電路板丨丨，同時該介 質基板831橫跨該電路板丨丨之兩側；一輻射金屬部133 ，The antenna of the present invention comprises: a circuit board; a grounding surface on the electrical upper surface, having an edge, and the edge is located inside the circuit board, so that the circuit board has a non-grounding surface interval, and the groundless surface The sin is near an edge of the circuit board; and an antenna element includes: a dielectric substrate 'located at the edge of the ungrounded surface of the circuit board and substantially perpendicular to the circuit board, and the dielectric substrate is entirely located at the edge The same side of the circuit board; the radiation gold rod is located on a surface of the dielectric substrate, which is formed on the dielectric substrate by etching, printing or injection molding technology. The feeding gold rod is located on one surface of the dielectric substrate, and The light-emitting metal portion is formed on the dielectric substrate by a patterning, printing or injection molding technique, comprising: a first metal component, one end of which is electrically connected: 7 1353688 the light metal portion;厶凰;# ^ 板益接地... The end is electrically connected to the signal source's two metal components and to the first metal component via the circuit, the ^^ ground_ There is a specific spacing '戎 specific interval a rain I ^ into the den. _ slave is less than 2mm to provide enough capacitive coupling and know the metal element, one end of which is electrically connected to the first metal 2, 1 The other end is short-circuited to one of the grounding surfaces of the circuit board by short-circuiting to the connection line of the occupant's eight-home ground plane and short to the connection line for etching or printing technology. Formed on the circuit board. In the antenna of the present invention, we can use a coupled feed mechanism to be effective; = the real part of the: resonant mode (one-eighth resonance mode) = : and adjust the size of the feed metal to increase the capacitance Thereby, the inductance of the first-resonance mode is lowered, so that the imaginary zero point of the input impedance is additionally added in the vicinity of the first resonance mode frequency, and then the size of the short-circuited metal component is adjusted to make the first resonance mode have good impedance matching. The operating bandwidth is sufficient to meet the two bands of GSM85〇/9〇〇 (824~960) specified by the wireless wide area network. At the same time, the two resonant lengths of the radiating metal portion are used to effectively excite the second resonant mode (the fourth-wavelength resonant mode of the longer path) and the third resonant mode (four points of the shorter path). One wavelength resonant mode) synthesizes a wide frequency band covering three frequency bands of gsm18〇〇/i9〇〇_ts (1710~2170MHz). [Embodiment] FIG. 1 is a structural diagram of an antenna according to an embodiment of the present invention, including a circuit board 11, a ground plane 2, located on one surface of the circuit board n, having an operation of 353,688 $ edge 121, And the edge and the edge 121 are located inside the circuit board ^, so that the circuit board 11 has a benefit ground plane ρ·ρ bow... and also the surface 111, and the ground plane interval is not close to the circuit board. - at the edge; and - antenna element and package; - dielectric substrate 13!, located in the circuit (4) - no ground plane interval at the edge, and substantially perpendicular to the circuit (four), while the dielectric substrate (3) is all located in the circuit (four) a light-emitting metal portion (3): a surface 132i of the dielectric substrate formed on the dielectric substrate 131i by etching, printing or injection molding technology; and a feeding metal portion 134 located in the medium On the "矣/surface 132 of the substrate, and on the surface of the light-emitting metal: human, formed on the "before substrate 131" by etching, printing or injection molding, comprising a first metal component 135, straight-end electrical Connected to the pure metal portion 133; a second metal member 136 One end of the second metal element 136 is electrically connected to a signal source 16 via a metal connection line 14 at one of the ground planes of the circuit board. The second metal element 136 has a specific spacing 137 from the metal element 135. And a short-circuited metal component 138, one end of which is electrically connected to the first metal component 136, and the other end of which is short-circuited to the ground plane 12 via a short-circuited metal connection line 15 located in a non-ground plane section η of the circuit board. The wire 短路 and the short-circuit metal connecting wire 15 are formed on the circuit board 11 by a credit or printing technique. Fig. 2 is a result of the return loss measurement of the antenna embodiment j of the present invention. Carrying out the experiment H circuit board η length is about! 〇 7 jobs, width about & 4 〇 ug; the ground plane 12 length is about 9 1353688 about 4 〇 m:; antenna element 13, including: - dielectric substrate i3i, It is ~38mm and has a width of about 8 faces; a light-emitting metal part (3) has a long-thir ring vibration of about 38mm (about 900MHz - wavelength), and the short resonance path is about 34mm and its width is about 〇 5 coffee; such as deposit 03 brother metal 70 pieces 135 length a length of about 15 mm is about ι_; and a short metal element 138 is about i2 mm in length and about 〇5 mm in width. The component 136 has a specific spacing 137 of about 0.5 between the first metal component 35 and the first metal component 35. From the obtained experimental junction, the _th resonance mode (four) is sufficient to cover GS, _0 under the definition of 6 dB return loss. The communication band 'and the second resonant mode 22 and the third resonant mode 23 are combined to form a wide frequency band sufficient to cover the two communication bands of GSM1800/1900 and umts. 3, 4, 5, 6, and 7 are two-dimensional radiation pattern diagrams of an embodiment 1 of the antenna of the present invention at 859, 925, 1795, 1920, and 2045 MHz, respectively, and the frequency thereof. The maximum gain of the antennas under the points is 1.03, 1.21, 3.24, 1.79 and 3.83 dBi, respectively. As a result of the above, the antenna of the present invention can meet the use requirements of mobile communication products in the low frequency operation band or the high frequency operation band. Figure 8 is a structural view of another embodiment 8 of the antenna of the present invention, comprising: a circuit board 11; a ground plane 12 on one surface of the circuit board ??? having an edge 121, and the edge 121 is located at the edge Inside the circuit board, the circuit board 11 has a groundless surface interval ln, and the ungrounded surface 1353688 section 111 is adjacent to an edge of the circuit board n; and an antenna element 13 i includes: a dielectric substrate 831 located at One of the circuits has no edge portion 111 of the ground plane, and is substantially perpendicular to the circuit board, while the dielectric substrate 831 spans both sides of the circuit board; a radiating metal portion 133,
位於該介質基板之一表面132上，其係以姓刻、印刷或射 出成形技術形成於該介質基板131上；及一饋入金屬部 834 ’位於5亥介質基板之一表面132上且與該輕射金屬 部133同一表面，係以姓刻、印刷或射出成形技術形成於 該，質基板131上，包含：一第一金屬元件835，其一端 電氣連接至該輕射金屬部133 ; 第二金屬元件136，其 一端經由位於該電路板丨丨無接地面區間ηι之一饋入金屬 連接線84電氣連接至—訊號源16，該第二金屬元件⑼並 與該第-金屬元件835之間具有一特定間距137 ;及一短 路金屬元件838，其一端電氣連接至該第-金屬元件136 ，另一端經由位於該電路板丨〗之無接地面區間ηι之一短 路金屬連接㈣短路域接地面12。上叙饋人金屬連接 線84及短路金屬連接線85仙㈣或印刷技術形成於今電 路板II上。實施例8亦能獲得與實施例〗近似的結果f符 合行動通訊產品的使用需求。 以上說明令所述之實施例僅為說明本發明之原理及其 =’而非限制本發明。，f於此技術之人士可再^ 适月本=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申請專利範圍所列。 1353688Located on a surface 132 of the dielectric substrate, which is formed on the dielectric substrate 131 by a surname, printing or injection molding technique; and a feed metal portion 834' is located on a surface 132 of the 5H dielectric substrate and The light-emitting metal portion 133 is formed on the same surface by a surname, printing or injection molding technique, and comprises: a first metal member 835 having one end electrically connected to the light-emitting metal portion 133; One end of the metal component 136 is electrically connected to the signal source 16 via a metal connection line 84 located in the ungrounded area η of the circuit board, and the second metal component (9) is interposed between the second metal component (9) and the first metal component 835. Having a specific spacing 137; and a shorting metal component 838 having one end electrically connected to the first metal component 136 and the other end shorting the metal connection (4) short-circuit ground plane via one of the ground planes ηι located in the circuit board 12. The upper-speaker metal connection line 84 and the short-circuit metal connection line 85 (4) or printing technology are formed on the current circuit board II. The result of Example 8 which is similar to the embodiment can also be obtained to meet the usage requirements of the mobile communication product. The above description of the embodiments is merely illustrative of the principles of the invention and its <RTIgt; Modifications and changes to the above embodiments may be made by those skilled in the art. The scope of the invention should be as set forth in the appended claims. 1353688
【圖式簡單說明 第1圖為本發明 第2圖為本發明 第3圖為本發明 第4圖為本發明 第5圖為本發明 第6圖為本發明 第7圖為本發明 第8圖為本發明 貫驗量測曲線 之轄射場型圖 之輻射場型圖 之輻射場型圖 之輻射場型圖 之輻射場型圖 天線一實施例結構圖。 天線一實施例之返回損失 天線一貫施例於859 MHz 天線一實施例於925 MHz 天線一實施例於1795 MHz 天線一實施例於1920 MHz 天線一實施例於2045 MHz 天線一其他實施例結構圖 【主要元件符號說明】 1 本發明天線一實施例 11 電路板 111 電珞板之一無接地面區間 12 接地面 121 接地面之一邊緣 13, 83 天線元件 131,831 介質基板 132 介質基板之一表面 133 輻射金屬部 134,834 饋入金屬部 135, 835 第一金屬元件 136 第·一金屬件 137 特定間距 12 1353688 138,838 :短路金屬元件 14, 84 :饋入金屬連接線 15, 85 :短路金屬連接線 16 .訊號源 21 :第一共振模態 22 :第二共振模態 23 :第三共振模態 8 :本發明天線一其他實施例 13BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a second view of the present invention, a fourth view of the present invention, a fourth view of the present invention, a fifth view of the present invention, a sixth view of the present invention, a seventh view of the present invention, and a sixth view of the present invention. It is a structural diagram of an embodiment of a radiation field pattern antenna of a radiation field pattern of a radiation field pattern of a radiation field pattern of a radiation field pattern of a radiation field pattern of the invention. Antennas of an embodiment of the return loss antenna consistently applied to the 859 MHz antenna one embodiment at 925 MHz antenna one embodiment at 1795 MHz antenna one embodiment at 1920 MHz antenna one embodiment at 2045 MHz antenna one other embodiment structure diagram [ DESCRIPTION OF THE EMBODIMENT OF THE EMBODIMENT 1 The antenna of the present invention is an embodiment 11 circuit board 111 one of the electrical rafts has no ground plane section 12 ground plane 121 one edge of the ground plane 13, 83 antenna elements 131, 831 dielectric substrate 132 one surface of the dielectric substrate 133 radiation The metal portion 134, 834 is fed into the metal portion 135, 835, the first metal member 136, the first metal member 137, the specific spacing 12 1353688 138, 838: the short-circuited metal component 14, 84: the feed metal connection line 15, 85: the short-circuit metal connection line 16. Source 21: first resonant mode 22: second resonant mode 23: third resonant mode 8: antenna of the present invention - other embodiment 13