1307565 97.12.09第95131652號專利說明書、申請專利範圍修正本 八、3若有化學式時，請揭示最能顯示發明特徵的化 九、發明說明： 【發明所屬之技術領域】 本發明係為一種行動通訊天線，特別是一種具有多 頻I呆作之内藏式婉蜒迴圈天線。 【先前技術】1307565 97.12.09 Patent Specification No. 95131652, and the scope of application for patent modification. If there is a chemical formula, please disclose the best indication of the characteristics of the invention. 9. Description of the Invention: The present invention is an action Communication antenna, especially a built-in loop antenna with multi-frequency I. [Prior Art]
近年來隨著行動通訊的快速發展，應用於行動裝置 之内藏式天線已被要求能具有多頻操作的特性，為了達 成多頻操作’許多倒F形天線（PIFA，pianar lnverted_FIn recent years, with the rapid development of mobile communication, built-in antennas for mobile devices have been required to have multi-frequency operation characteristics in order to achieve multi-frequency operation. Many inverted F-shaped antennas (PIFA, pianar lnverted_F
Antenna)結構已被研究設計並實際應用於行動電話等無 線通訊產品上。，然而這類多頻操作的倒F形天線所激發 出來的共振模態都是屬於非平衡式模態，相較於自我平 衡式結構的激發模態，這類非平衡式結構的激發模態會 導致在系統接地面上有較大的表面激發電流，因此當有 損介質（如人的手和頭等）#近手機時，天線特性會有 較大程度的變差是可以被預期的。為了達成自我平衡結 構的特性’許多設計過的全波長迴圈天線亦被研究並實 際地應用於行動f糾。相關f用天線之設計如美國專 利US6,958,737 f虎“應用於行動設備並具有降低sar (Specific absorption rate)值之迴圈天線（L〇〇p 如把腿 F〇r a 1307565 97.12.09第95131652號專利說明書、中請專利範圍修正本The Antenna structure has been researched and applied to wireless communication products such as mobile phones. However, the resonant modes excited by the inverted-F antenna of such multi-frequency operation belong to the unbalanced mode, and the excited mode of such unbalanced structure is compared with the excited mode of the self-balanced structure. It will result in a large surface excitation current on the system ground plane, so when there is damage to the medium (such as human hands and heads) # near the mobile phone, the antenna characteristics will be greatly deteriorated can be expected. In order to achieve the characteristics of a self-balancing structure, many designed full-wavelength loop antennas have also been studied and practically applied to action f correction. The design of the related f antenna is as described in US Patent No. 6,958,737. The tiger is applied to mobile devices and has a loop antenna that reduces the sar (Specific absorption rate) value (L〇〇p such as the leg F〇ra 1307565 97.12.09, 95131652) Patent specification, revision of patent scope
Mobile Terminal Capable of Reducing Specific Absorption Rate)” 和美 國專利US6,236,368號“應用於通信設備之迴圈天線裝配 技術（Loop Antenna Assembly For Telecommunication Devices)，，， 其均揭示一種迴圈天線設計。然上述專利之迴圈天線只 具有單頻操作之特性，無法滿足目前行動通訊設備的需 求。因而，本發明係為一種具多頻操作之蜿蜒迴圈天線 ，藉由適當的蜿蜒迴圈輻射體可以調整共振模態之頻率 比，進而達成多頻操作之目的。 發明内容】 如上所述，本發明之目的在於提供一種具有多頻操 作之内藏式蜿蜒迴圈天線，以符合目前行動通訊設備的 需求。 而本發明係包括：一系統接地面；一迴圈輻射金屬 片；一短路金屬片；及一饋入信號組件。該迴圈輻射金 屬片具有-起始端及-末端，位於該系統接地面之上， 並包含一第一輻射部、一第二輻射部及一第三輻射部； =短路金屬片之-端電氣連接至該迴圈輻射金屬片之末 另端電氣連接至s亥系統接地面；該饋入信號組件 ^含-饋人信號源及-馈人金屬片，並位於該系統接地 面與該迴圈輻射金屬片之間，用以傳輪訊號。 片t本項設計中，該第一韓射部為-長直狀之金屬細 其-端為該迴圈輕射金屬片之起始端。該第二輕射 …、為-長直狀之金屬細片’與該第一輻射部左右對稱 1307565 37.⑽第35131652财利說明書、 位於該迴圈輻射金屬月 為該迴圈輻射金屬片之末端。节該第二輕射部之-端 片婉越而成’並具有公部卜金屬細 ? ^ ^ M . 。知及末端，該起始端連接 至。亥第輻射部相對於該迴圈^ Μ 4山Μ 士山丄 、圏‘射金屬片之起始端的另 一知，而该末端大致朝遠離 彳Μ # 4f ^ ^ /夂始鳊的方向以蜿蜒的方 式延伸，並連接至該第二轄 片之末端的另-端。…相對於該迴圈輻射金屬 【實施方式】 第1圖為本發明之内藏式蜿蜒迴圈天線一實施例 ’匕括.一糸統接地面10; -迴圈輻射金屬片11，罝有 一起始端m及-末端112 ’位於該系統接地面1〇之上 ’並包含-第-輻射部12、—第二輻射部13及—第三輕 射部14 ’該第—輕射部12為—長直狀之金屬細片，盆一 端為該迴圈輻射金屬片Μ起始端⑴，該第二輕射部 13，亦為一長直狀之金屬細片，與該第一輻射部u左右 對稱位於該迴圈幸畐射金屬片11之兩邊，且該第二輕射13 之一端為該迴圈輻射金屬片11之末端112，而該第三輕 射部14由—均句金屬細片婉蜒而成，並具有-起始= 141及一末端142，該起始端141連接至該第一輻射邱 12相對於該迴，射金屬片11之起始端111的另—端° 121 ，而該末端142大致朝相反於該起始端141的方向 以蜿蜒的方式延伸，並連接至該第二輻射部13相對於該 迴圈輻射金屬片11之末端U2的另一端131 ，· 一短路金 1307565 97.12.09第9S131652號專利說明書、中請專利範面修正本 屬片15，其一端電氣連接至該迴圈輻射金屬片π之末端 112 ，而另一端電氣連接至該系統接地面1〇，該短路金 屬片15為一直條狀之金屬片體，並具有一均勻線寬；及 一饋入信號組件，位於該系統接地面與該迴圈輻射金 屬片11之間，包含一饋入信號源16及一饋入金屬片17， 而該饋入金屬片17—端電氣連接至該迴圈輻射金屬片u 之起始端111 ，其另一端連接至該饋入信號源16，該饋 入金屬片17並具有一均勻線寬。 第2圖為一傳統迴圈天線之上視圖，該傳統迴圈天 線其共振模態（半波長模態、全波長模態及u波長模 態）之頻率比大致為1:2:3。 第3圖為本發明天線之一實施例的返回損失實驗 量測結果圖。在本實施例中，該系統接地面1〇之長度約 為100 mm、寬度約為45 mm ;該迴圈輻射金屬片u之長度 大致為178_，接近900MHz之半波長。而藉由適當二 蜿蜒該迴圈輻射金屬片U ’該蜿蜒迴圈天線的第三共振 模態33 (1.5波長模態）可以被調整至非常靠近該第二共 振模態32(全波長模態），進而於高頻帶形成寬頻操作 。由實際量測所得到的實驗結果，S返回損失小於73 dB的定義下’天線阻抗頻寬可涵蓋無線行動通訊系統"Mobile Terminal Capable of Reducing Specific Absorption Rate" and US Patent No. 6,236,368, "Loop Antenna Assembly For Telecommunication Devices", both of which disclose a loop antenna design. However, the loop antenna of the above patent has only the characteristics of single frequency operation, and cannot meet the requirements of current mobile communication equipment. Therefore, the present invention is a multi-frequency operation of a loop antenna, and the frequency ratio of the resonant mode can be adjusted by a suitable loop radiator to achieve multi-frequency operation. SUMMARY OF THE INVENTION As described above, it is an object of the present invention to provide a built-in loop antenna having a multi-frequency operation to meet the needs of current mobile communication devices. The present invention comprises: a system ground plane; a loop of radiating metal; a shorted metal strip; and a feed signal component. The loop radiation metal piece has a start end and a - end, is located above the ground plane of the system, and includes a first radiating portion, a second radiating portion and a third radiating portion; The other end connected to the loop radiating metal piece is electrically connected to the grounding surface of the shai system; the feed signal component includes a feed source and a feed metal piece, and is located at the ground plane of the system and the loop Between the radiating metal sheets, used to transmit the signal. In the design of the sheet t, the first Korean portion is a long straight metal thin end and the end is the starting end of the loop light metal sheet. The second light-emitting... is a long straight metal piece' symmetrical with the first radiating portion 1307565 37. (10) No. 35131652, the radiation metal on the loop is the radiation metal sheet of the loop End. The second light-emitting part of the section is formed by the end of the film, and has a public metal, fine metal ^ ^ M . Knowing the end, the starting end is connected to. The other part of the beginning of the radiant part of the radiant part of the 亥 Μ Μ Μ 士 射 射 射 射 射 射 射 射 射 射 射 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 The 蜿蜒 is extended and connected to the other end of the end of the second arbitrage. Radiation metal with respect to the loop [Embodiment] FIG. 1 is an embodiment of a built-in loop antenna of the present invention, which includes a system of ground planes 10; a loop of radiating metal sheets 11 An initial end m and a - end 112' are located above the ground plane 1' of the system and include a -th-radiation portion 12, a second radiating portion 13, and a third light-emitting portion 14' a long straight metal piece, the end of the basin is the starting end (1) of the metal sheet 辐射, and the second light-emitting portion 13 is also a long straight metal piece, and the first radiation portion u The symmetry is located on both sides of the looping metal sheet 11, and one end of the second light beam 13 is the end 112 of the loop radiating metal sheet 11, and the third light-emitting portion 14 is made of a uniform metal sheet婉蜒 formed with - start = 141 and an end 142, the starting end 141 is connected to the other end of the first radiation 12 relative to the back, the starting end 111 of the metal sheet 11 The end 142 extends substantially in a meandering direction opposite to the starting end 141 and is coupled to the second radiating portion 13 relative to the loop The other end 131 of the end U2 of the radiant metal sheet 11, a short circuit gold 1307565 97.12.09 Patent No. 9S131652, the patent specification face modification, the genus 15 is electrically connected to one end of the radiant metal piece π The end 112 is electrically connected to the ground plane 1 该 of the system, the short metal strip 15 is a strip-shaped metal sheet body and has a uniform line width; and a feed signal component is located at the ground plane of the system The loop radiating metal sheets 11 includes a feed signal source 16 and a feed metal sheet 17, and the feed metal sheet 17 is electrically connected to the start end 111 of the loop radiation metal sheet u. The other end is connected to the feed signal source 16, which feeds into the metal sheet 17 and has a uniform line width. Figure 2 is a top view of a conventional loop antenna with a frequency ratio of approximately 1:2:3 in its resonant mode (half-wavelength mode, full-wavelength mode, and u-wavelength mode). Fig. 3 is a graph showing the results of the return loss test of an embodiment of the antenna of the present invention. In this embodiment, the system ground plane 1〇 has a length of about 100 mm and a width of about 45 mm; the length of the loop radiating metal sheet u is approximately 178 mm, which is close to half a wavelength of 900 MHz. The third resonant mode 33 (1.5 wavelength mode) of the loop antenna can be adjusted to be very close to the second resonant mode 32 (full wavelength) by appropriately twirling the metal strip U' Mode), which in turn forms a wide frequency operation in the high frequency band. The experimental results obtained from actual measurements, S return loss is less than 73 dB under the definition of 'antenna impedance bandwidth can cover wireless mobile communication systems
GSM (890〜％0 MHz)、DCS (1710〜1880 MHz)及 PCS (1850〜1990)之三頻操作需求。 第4圖為本發明之内藏式蜿蜒迴圈天線的第一其 他實施例平面展開圖，其中該迴圈輻射金屬片n之第^ 1307565 97.12.09第95131652號專利說明書、申請專利範圍修正本 輻射部44由一不均勻金屬細片蜿蜒而成。第5圖為本發 明之内藏式蜿蜒迴圈天線的第二其他實施例平面展開圖 ，其中該短路金屬片55及饋入金屬片57為不均勻線寬。 第6圖為本發明之内藏式蜿蜒迴圈天線的第三其他實施 例平面展開圖，其中該迴圈輻射金屬片u以印刷或蝕刻 技術形成於一介質基板6〇上。第4〜6圖之三個其他實施 例均可以達成與本發明說明中第丨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。 1307565 97.12.09第95131652號專利說明書、中請專利範圍修正本 【圖式簡單說明】 第1A圖為本發明之内滅式婉誕迴圈天線—實施例之上 視圖。 第1B圖為本發明之内藏式蜿蜒迴圈天線—實施例之側 視圖。 第1C圖為第1A圖之天線展開為一平面之結構圖。 第2圖為一傳統迴圈天線之上視圖。 第3圖為本發明天線之一實施例的返回損失實驗量測結 果圖。 第4圖為本發明之内藏式蜿蜒迴圈天線的第一其他實施 例平面展開圖。 ' 第5圖為本發明之内藏式蜿蜒迴圈天線的第二其他實施 例平面展開圖。 第6圖為本發明之内藏式蜿蜓迴圈天線的第三其他實施 例平面展開圖。 、 1307565 申謗專利範面修正本 97.12.09第95131652號專利說明書 【主要元件符號說明】 10 :系統接地面 11 111 112 12 121 :迴圈輻射金屬片 :迴圈輻射金屬片之起始端 :迴圈輻射金屬片之末端 :迴圈輻射金屬片之第-輻射部 ••第一輻射部相對於該迴 111的另一端 圈輻射金屬片之起始端 13 131 :迴圈輻射金屬片之第二輻射部 .第一輻射部相對於該Μ圈輻射金屬片之末端112 的另一端 14,44 :迴圈輻射金屬片之第三輻射部 141 ·•迴圈輻射金屬片之第三輻射部之起始端 142 :迴圈輕射金屬片之第三輕射部之末端 15,55 :短路金屬片 16 :饋入信號源 17,57 :饋入金屬片 21 :傳統迴圈輻射金屬片 31 :第一共振模態 32 % 一共振模態 33 :第三共振模態 60 :介質基板 12Tri-band operation requirements for GSM (890~%0 MHz), DCS (1710~1880 MHz) and PCS (1850~1990). Figure 4 is a plan view showing a first embodiment of the built-in type of loop antenna of the present invention, wherein the loop of the metal sheet n is disclosed in the specification of the patent document No. 9510652 The radiating portion 44 is formed by twisting a non-uniform metal thin piece. Figure 5 is a plan view showing a second embodiment of the built-in loop antenna of the present invention, wherein the short metal strip 55 and the feed metal sheet 57 have a non-uniform line width. Fig. 6 is a plan view showing a third embodiment of the built-in type of loop antenna of the present invention, wherein the loop radiating metal sheet u is formed on a dielectric substrate 6 by printing or etching. The three other embodiments of Figures 4 through 6 can achieve multi-frequency operation characteristics similar to those of the 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. 1307565 97.12.09 Patent Specification No. 95131652, and the scope of the patent scope revision [Simplified description of the drawings] Fig. 1A is a view of the inner-extinguishing loop antenna of the present invention. Figure 1B is a side elevational view of an embodiment of the built-in loop antenna of the present invention. Fig. 1C is a structural diagram in which the antenna of Fig. 1A is expanded into a plane. Figure 2 is a top view of a conventional loop antenna. Figure 3 is a graph showing the return loss experimental measurement results for an embodiment of the antenna of the present invention. Fig. 4 is a plan development view showing a first other embodiment of the built-in loop antenna of the present invention. Fig. 5 is a plan view showing a second embodiment of the built-in loop antenna of the present invention. Fig. 6 is a plan view showing a third embodiment of the built-in loop antenna of the present invention. , 1307565 谤 谤 patent paradigm revision 97.12.09 95131652 patent specification [main component symbol description] 10: system ground plane 11 111 112 12 121: loop radiation metal sheet: the starting end of the loop radiation metal sheet: back The end of the ring radiating metal piece: the first radiation portion of the loop radiating metal piece • The first end of the first radiating portion with respect to the other end ring of the back 111 radiating the starting end of the metal piece 13 131 : the second radiation of the loop radiating the metal piece The first radiating portion is opposite to the other end 14 of the end 112 of the coil radiating metal piece, 44: the third radiating portion of the metal piece of the metal sheet is circulated by the loop. The starting end of the third radiating portion of the metal sheet of the loop radiating metal sheet 142: the end of the third light-emitting portion of the loop light metal sheet 15, 55: short-circuit metal sheet 16: feed signal source 17, 57: feed metal sheet 21: conventional loop radiation metal sheet 31: first resonance Modal 32% Resonance Mode 33: Third Resonance Mode 60: Dielectric Substrate 12