TW519779B

TW519779B - Radiating patch for dual-frequency planar monopole antenna

Info

Publication number: TW519779B
Application number: TW91105244A
Authority: TW
Inventors: Chi-Yueh Wang; Tsung-Wen Chiu; Kin-Lu Wong; Yeh-Chian Lin
Original assignee: Phycomp Taiwan Ltd; Kin-Lu Wong
Priority date: 2002-03-15
Filing date: 2002-03-15
Publication date: 2003-02-01

Abstract

The present invention provides novel radiating patch designs for the dual-frequency planar monopole antenna. This invention comprises a feed point and two embedded slits. Due to the said two embedded slits, a single meandered path for the excited surface currents is formed in the radiating patch. This said meandered path is used for generating the two separate operating frequencies of the proposed antenna, and its total length is roughly about one-half wavelength of the upper operating frequency and about one-quarter wavelength of the lower frequency. In addition, by adding a small bypass patch across one of the embedded slits, an additional surface current path can be obtained, which leads to significant bandwidth enhancement of the proposed antenna, and the obtained bandwidths can cover the operating bandwidths of the GSM, DCS and PCS systems.

Description

519779 五、發明說明（1) 隨著無線通訊的蓬勃發後春荀般的出％，例°式：通與技術也如雨近來熱門趨勢，如果_ς二：帛、甚至夕頻段應用更是接受盥音定，J：嘉口、斫的產⑽，想要得到市場的廣泛要的^赫。一二的外觀、尺寸與效能，就成為非常重用的=綠：又、用於無線通訊產品的雙頻天線設計，習第二類為單偶極天m::類為倒师的平板天線；振的操作模能，A 2 /上述兩種天線皆能產生1/4波長共用上產生很大的p卩制倒F形平j反天線頻寬較小，往往在使不過其不能過於^近接f然單偶極天線具有較大的頻寬，類，雙頻輕射金屬片的技術，也大至可區分為兩割成兩大小；當5:^屬片加入狹縫，使該輻射金屬片分頻天線的低頻屬；丄=兩金屬片則分別操作於雙片造成兩大小不同的、全d3是：用狭縫使輻射金屬由較大之金屬片所造成，而較小皆兩個大小不同的金屬片所設計的但其利用 :般倒F形平板大，要提線’插、广面積仍較屬片且彻：欠勒乂晋徒出一種利用單一金第雙頻單偶極^，以解決上述問題。配置於介質= 板12、基 —輻射金屬片1卜一介質基接地面二亡表面黏著ί點& 一訊號傳輸線"、一介質基板1 6及一連接金屬線i 7。該接地面上5519779 V. Description of the invention (1) With the rapid development of wireless communication, the percentage of spring is rising, for example: Type: Communication and technology are also a hot trend recently. If _ς 2: ς, even in the evening frequency band is even more popular. Accept the sound, J: Jiakou, 斫 production company, want to get the broad market demand. The appearance, size, and efficiency of one or two have become very reusable = green: and dual-frequency antenna design for wireless communication products. The second type is a single-pole dipole antenna m :: type is a flat panel antenna; The operating mode of vibration, A 2 / both of the above-mentioned antennas can produce 1/4 wavelength sharing, which produces a large p-shaped inverted F-shaped flat j-antenna. The bandwidth of the antenna is small, so it ca n’t be too close. f However, the single-dipole antenna has a large bandwidth, and the technology of dual-band light-emitting metal sheet is also large enough to be divided into two sizes; when 5: ^ metal sheet is added to the slot, the radiating metal The low-frequency property of a crossover antenna; 丄 = two metal pieces are operated on two pieces respectively, resulting in two different sizes, and the full d3 is: the slit is used to make the radiating metal caused by the larger metal piece, while the smaller are two. Designed by metal pieces of different sizes, but its use: the general inverted F-shaped flat plate is large, it must be mentioned that the wire is inserted, and the wide area is still relatively thin and complete: the underachievers have developed a kind of single-frequency dual-frequency single dipole ^ To solve the above problems. Disposed on the medium = board 12, base-radiating metal sheet 1 and a dielectric base. The ground surface is adhered with two dots & a signal transmission line ", a dielectric substrate 16 and a connecting metal wire i 7. The ground plane 5

519779 五、發明說明（2) 用以電氣接地，該介質基板1 2之材料為微波基底，用以印刷或蝕刻該輻射金屬片11，該連接金屬線1 7可印刷或蝕刻於介質基板1 6之上，用以連接訊號傳輸線與輻射金屬片來傳遞訊號’而該介質基板1 6可視為行動通訊手機之一電路板0 本發明之第一目的在於提供一種用於雙頻平面式單偶極天線之輻射金屬片，該輻射金屬片包括：一饋入點及兩狹縫 (一第一狹縫及一第二狹縫）。該兩狹縫分別由該輻射金屬片之一邊緣延伸至該輻射金屬片之内部，藉由該兩狹縫之區隔，使该輻射金屬片形成一單一的蜿蜒路徑，該路徑用於該天線之二操作頻率之+、六^ ^ ^ ^ 示F肩千之電流路徑，且該路徑具有一起始端及一末端，該起始端兔兮棘 ^ t ^ A ^ J # 马该饋入點，該末端則延伸至該輻射金屬片之邊緣。其中兮—4口仏， _ 成一标作頻率包括一高頻及一低頻，該路徑之長度接近該吝相々千 Λ N頻之1 / 2波長，且該路徑之長度接近該低頻之1 /4波長。因士丄务 ^ ^ ^ ^ μ ^ μ ΰ 因此，本發明只須藉由單一的 π〜名丨德诚Ρ△田卜加帛助阻抗匹配的金屬片，即可得到雙頻拓作的效果，故519779 V. Description of the invention (2) For electrical grounding, the material of the dielectric substrate 12 is a microwave substrate, which is used to print or etch the radiation metal sheet 11, and the connection metal wire 17 can be printed or etched on the dielectric substrate 1 6 Above, it is used to connect the signal transmission line and the radiating metal sheet to transmit the signal, and the dielectric substrate 16 can be regarded as a circuit board of a mobile phone. The first object of the present invention is to provide a dual-frequency planar single dipole. A radiating metal sheet of an antenna. The radiating metal sheet includes a feeding point and two slits (a first slit and a second slit). The two slits extend from one edge of the radiating metal sheet to the inside of the radiating metal sheet respectively, and the radiating metal sheet forms a single meandering path by being separated by the two slits, and the path is used for the The second and the sixth operating frequency of the antenna are +, ^ ^ ^ ^ shows the current path of F shoulder, and the path has a starting end and an end, the starting end is a rabbit ^ t ^ A ^ J # horse feed point, The end extends to the edge of the radiating metal sheet. Among them, —4 mouths, _ becomes a standard frequency including a high frequency and a low frequency, the length of the path is close to the wavelength of the phase frequency of the phase Λ N, and the length of the path is close to 1/2 of the low frequency. 4 wavelengths. Because of the service ^ ^ ^ ^ μ ^ μ ΰ Therefore, the present invention only needs to use a single π ~ name 丨 Decheng P △ Tian Bujia to assist the impedance matching of the metal sheet, you can get the effect of dual frequency extension , So

^ ^ r 丄八、益m^故本發明之輻射金屬片面積可大幅細小，十为適用於GSM (8〇n QeA 1qqh MU Λ- ^ ^ , 、890 —960 MHz)與 DCS (1710- 1 880 MHz)灯動通訊糸統雙頻帶的應用上。^ ^ r 丄 8. Yi m ^ Therefore, the area of the radiating metal sheet of the present invention can be greatly reduced, and 10 is suitable for GSM (80n QeA 1qqh MU Λ- ^ ^, 890 -960 MHz) and DCS (1710- 1 880 MHz) for dual-band applications of the light communication system.

第2圖為本發明之輻射金屬H ^ ^ . ^ A 99 /月之一貫施例，該輻射金屬片5 包括·一饋入點2 2、一具右石小夕筮姑綠且古从为主乂一個90度或接近90度折彎之弟一狹縫U及一長直的箓—朴^ 該連接金屬線π (見圖丨之天後狹δ^φ24。該饋入點22連接至 „ ^ a ^ 24^ ^ ^ J至屬片2之一邊緣延伸至該輻FIG. 2 is a conventional embodiment of the radiant metal H ^ ^. ^ A 99 / month of the present invention, the radiant metal sheet 5 includes a feed point 2 2, a right stone Xiaoxi 筮 gu green and ancient The main point is a slit U and a long straight 弟, which is bent at 90 degrees or near 90 degrees. The connection metal line π (see Figure 丨 Tianhou Narrow δ ^ φ24. The feed point 22 is connected to „^ A ^ 24 ^ ^ ^ J to one edge of the genus 2 extends to the spoke

519779 五、發明說明（3) 射金屬片2之内部，藉由該兩狹缝2 3、2 4之區隔，形成一單一的蜿蜒輻射金屬片路徑2 1，而該路徑2 1具有一起始端及一末端，該起始端為饋入點2 2，該末端則延伸至該輻射金屬片之邊緣。由於本發明之輻射金屬片1 1只使用一段單一的金屬片路徑來達成雙頻的操作，相較於必須使用兩段大小不同的金屬片.路徑之習用技術，該輻射金屬片1 1可減少約2 0 %之面積，使得本發明之雙頻平面式單偶極天線面積可因此減小，達成目前輕薄短小的實用要求。第3圖是此實施例的返回損失的實驗量測結果；由結果亦可看出本發明天線成功激發於9 0 0及1 8 0 0 MHz附近的兩個模態[一第一（低頻）操作模態3 1及一第二（高頻）操作模態3 2 ]，十分適用於GSM與DCS兩個行動通訊系統的應用。第4圖為本發明之輻射金屬片另一實施例，該輻射金屬片4 包括：一饋入點42、一第一狹縫43及一第二狹缝44。該饋入點4 2連接至該連接金屬線1 7 (見圖1之天線配置圖）；該第一狹缝4 3包含一具有至少一個9 0度或接近9 0度折彎的較長支路狹縫4 3 1及一較短支路狹縫4 3 2，而該第二狹缝4 4為一長直狹缝。該兩狹縫43、4 4由該輻射金屬片之一邊緣延伸至該輻射金屬片之内部，藉由該兩狹缝之區隔，形成一單一的蜿蜒輻射金屬片路徑4 1，而該蜿蜒路徑4 1具有一起始端及一末端，該起始端為饋入點4 2，該末端則延伸至該輻射金屬片之邊緣。本發明之第二目的在於提供一種藉由加入一旁路金屬片而能夠增加操作頻寬之雙頻平面式單偶極天線之輻射金屬519779 V. Description of the invention (3) The interior of the radiating metal sheet 2 is separated by the two slits 2 3, 2 and 4 to form a single meandering radiating metal sheet path 21, and the path 21 has A starting end and an end, the starting end is the feeding point 22, and the end extends to the edge of the radiating metal sheet. Since the radiating metal sheet 11 of the present invention uses only a single piece of metal sheet path to achieve dual-frequency operation, the radiating metal sheet 11 can reduce the number of radiating metal sheets 11 compared to the conventional technique of using two pieces of metal sheets of different sizes. With an area of about 20%, the area of the dual-frequency planar single-dipole antenna of the present invention can be reduced accordingly, and the current practical requirements for lightness, thinness, and shortness are achieved. Fig. 3 is the experimental measurement result of the return loss of this embodiment; it can also be seen from the results that the antenna of the present invention successfully excites the two modes near 900 and 180 MHz [a first (low frequency) Operating mode 31 and a second (high-frequency) operating mode 3 2] are very suitable for the application of two mobile communication systems, GSM and DCS. FIG. 4 is another embodiment of the radiating metal sheet of the present invention. The radiating metal sheet 4 includes a feeding point 42, a first slit 43, and a second slit 44. The feeding point 4 2 is connected to the connecting metal wire 17 (see the antenna configuration diagram of FIG. 1); the first slit 4 3 includes a longer branch having at least one 90 degree or near 90 degree bend The road slit 4 3 1 and a shorter branch slit 4 3 2, and the second slit 44 is a long straight slit. The two slits 43 and 4 extend from one edge of the radiation metal sheet to the inside of the radiation metal sheet. A single meandering radiation metal sheet path 41 is formed by the separation between the two slits, and the The winding path 41 has a starting end and an end, the starting end is a feeding point 4 2, and the end extends to the edge of the radiating metal sheet. A second object of the present invention is to provide a radiating metal of a dual-frequency planar single-dipole antenna capable of increasing the operating bandwidth by adding a bypass metal sheet.

519779 五、發明說明（4) 片，該輻射金屬片包括：一饋入點，兩狹缝（一第一狹缝及一第二狹缝）及一旁路金屬片。該兩狹缝分別由該輻射金屬片之一邊緣延伸至該輻射金屬片之内部，藉由該兩狹缝之區隔，使該輻射金屬片形成一單一的蜿蜒路徑（第一電流路徑），該路徑用於該天線之二操作頻率之電流路徑，且該路徑具有一起始端及一末端，該起始端為該饋入點，該末端則延伸至該輻射金屬片之邊緣。該旁路金屬片用以形成一第二電流路徑，該第二電流路徑亦用於該天線之二操作頻率之電流路徑，其起始點與末端與該第一電流路徑相同，其中該二操作頻率包括一高頻及一低頻，該第一路徑之長度接近該高頻之1 / 2波長，同時亦接近該低頻之1 / 4波長，該第二電流路徑之長度則略短於該第一電流路徑之長度。由於增加了該第二電流路徑，使得本發明天線兩個操作頻帶之頻寬均可增加，特別是第二（高頻）操作頻寬的增加更為明顯。因此，本發明之輻射金屬片不但能夠適用於GSM與DCS雙頻帶，並同時也適用於PCS頻帶的應用上。第5圖為本發明天線之輻射金屬片具有一旁路金屬片之一實施例，該輻射金屬片5包括：一饋入點5 2、一具有至少一個9 0度或接近9 0度折彎之第一狹缝5 3及一長直的第二狹縫5 4及一旁路金屬片5 5。該饋入點5 2用以連接至該連接金屬線1 7 (見圖1之天線配置圖）；該第一狹縫5 3及該第二狹缝5 4分別由該輻射金羼片之一邊緣延伸至該輻射金屬片之内部，藉由該兩狹缝之區隔，形成一單一的蜿蜒輻射金屬519779 5. Description of the invention (4) sheet, the radiating metal sheet includes: a feeding point, two slits (a first slit and a second slit) and a bypass metal sheet. The two slits respectively extend from one edge of the radiation metal sheet to the inside of the radiation metal sheet, and the radiation metal sheet forms a single meandering path (first current path) by the separation of the two slits. This path is used for the current path of the two operating frequencies of the antenna, and the path has a starting end and an end, the starting end is the feeding point, and the end extends to the edge of the radiating metal sheet. The bypass metal sheet is used to form a second current path. The second current path is also used for the current path of the two operating frequencies of the antenna. The starting point and the end are the same as the first current path. The two operations The frequency includes a high frequency and a low frequency. The length of the first path is close to 1/2 wavelength of the high frequency, and also close to 1/4 wavelength of the low frequency. The length of the second current path is slightly shorter than the first The length of the current path. Due to the addition of the second current path, the bandwidth of both operating frequency bands of the antenna of the present invention can be increased, especially the increase of the second (high-frequency) operating frequency bandwidth is more obvious. Therefore, the radiating metal sheet of the present invention can be applied not only to the dual bands of GSM and DCS, but also to the application of the PCS band. FIG. 5 is an embodiment of the radiating metal sheet of the antenna of the present invention having a bypass metal sheet. The radiating metal sheet 5 includes: a feeding point 5 2. A radiating metal sheet having at least one 90 degree or near 90 degree bend The first slit 53 and a long straight second slit 54 and a bypass metal sheet 55 are provided. The feeding point 5 2 is used to connect to the connecting metal wire 17 (see the antenna configuration diagram of FIG. 1); the first slit 5 3 and the second slit 54 are respectively formed by one of the radiating gold diaphragms. The edge extends to the inside of the radiant metal sheet, and is separated by the two slits to form a single meandering radiant metal

519779 五、發明說明（5) ____ 片路在（苐一電流路徑）^ ^ _ 及一太媳，兮土 J b 1 ’而该婉虫延路徑5 1具有一扣仏及末^ 该起始端為該饈入點以，兮士 ^ 起始端射金屬片之邊緣。 ^ . 2戎末端則延伸至該輻 54,用以形成一第另:V亥旁路β金屬片55跨過該第於該天線之-f於—电机路徑5該第二電流路徑56玄田第二作頻率之電流路徑，其起始點金Ϊ::用弟包流路徑5 1相同。一禾端與該第6圖是第5圖實絲仏丨以、镇 r你此例5的返回損失的實驗量測結果· ^ η桑作模態，6 0 2為第二（高頻夂：模， 2金屬“5返回損失量測結果，由結果J二：入該 ::路金屬片55,可以有效增加天線的操作頻以力;，，弟二細作模態602，使得本發明天線不但能夠4寸別疋 ^ DCS雙頻帶並同時也適用於pcs頻帶的應用上。；GSM ，7圖為本發明之輻射金屬片另一實施例，該輻射匕括··一饋入點72、一第一狹縫73、一第二狹縫7 一式7 路金屬片75。該饋入點72用以連接至該連接金屬線一方圖ί之天線配置圖）；該第一狹缝7 3包含一具有至少一見度或接近90度折彎的較長支路狹缝731及一較短的"長—個9〇路狹縫732，而該第二狹缝74為一長直狹縫，該兩^縫 7 3 7 4由该輛射金屬片之一邊緣延伸至該輻射金屬片内部，藉由該兩狹縫7 3、7 4之區隔，形成一單_的 $之一射金屬片路徑（第一電流路徑）71，而該蜿蜒路徑Η具=輪起始端及一末端，該起始端為饋入點72，該末端則ς 一該輻射金屬片之邊緣。該旁路金属片5 5跨過該第一狹縫至519779 V. Description of the invention (5) ____ The path is in (苐一 current path) ^ ^ _ and one is too long, Xi soil J b 1 ', and the wan worm extension path 5 1 has a button 末 and the end ^ the starting end For this penetration point, the beginning of the shot ^ shoots the edge of the metal sheet. ^. 2 Rong end is extended to the spoke 54 to form a second: V Hai bypass β metal sheet 55 across the antenna -f to-the motor path 5 the second current path 56 The current path of the second frequency is the same as the starting point of the current path. Yihe Duan and the 6th figure are the solid wires of the 5th figure. With the measurement results of the return loss of this example 5 as an example, ^ η mulberry mode, 6 0 2 is the second (high frequency 夂: Mode, 2 metal "5 return loss measurement results, from the result J II: Enter this :: road metal plate 55, which can effectively increase the operating frequency of the antenna; ,, the second brother makes mode 602, making the antenna of the present invention Not only can it be 4 inches, DCS dual-band, but also suitable for pcs band applications. GSM, Figure 7 is another embodiment of the radiating metal sheet of the present invention, the radiating dagger ... a feed point 72, A first slit 73, a second slit 7 and a 7-way metal sheet 75. The feeding point 72 is used to connect to the antenna configuration diagram of the connecting metal wire; the first slit 73 includes A longer branch slit 731 with a bend of at least one degree of visibility or close to 90 degrees and a shorter " long 90-slot slit 732, and the second slit 74 is a long straight slit, The two slits 7 3 7 4 extend from one edge of the shooting metal sheet to the inside of the radiation metal sheet, and are separated by the two slits 7 3 and 7 4 to form a single $ one shot. It belongs to the sheet path (first current path) 71, and the meandering path tool = the starting end of the wheel and an end, the starting end is the feeding point 72, and the end is a edge of the radiating metal sheet. The bypass The metal sheet 5 5 crosses the first slit to

519779 五、發明說明（6) 較短的長直支路狹縫73 2，用以形成一第二電流路徑7 6，該第二電流路徑7 6亦用於該天線之二操作頻率之電流路徑，其起始點與末端與該第一電流路徑7 1相同，惟該第二 - 電流路徑7 6之長度略短於該第一電流路徑7 1之長度。本發明說明中所述之實施例僅為說明本發明之原理及其功效，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。本發明之權利範圍應如後述之申請專利範圍所列。 ~519779 V. Description of the invention (6) The short long straight branch slit 73 2 is used to form a second current path 7 6 which is also used for the current path of the two operating frequencies of the antenna Its starting point and end are the same as the first current path 71, but the length of the second-current path 76 is slightly shorter than the length of the first current path 71. The embodiments described in the description of the present invention are only for explaining the principle of the present invention and its effects, but not for limiting the present invention. Therefore, those skilled in the art can modify and change the above embodiments without departing from the spirit of the present invention. The scope of rights of the present invention should be listed in the scope of patent application mentioned later. ~

第10頁 519779 圖式簡單說明 [圖式簡單說明] 第1圖為本發明天線之輻射金屬片一實施例垂直配置於一介質基板之結構圖。第2圖為本發明天線之輻射金屬片一實施例結構圖。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。第4圖為本發明天線之輻射金屬片另一實施例結構圖。第5圖為本發明天線之輻射金屬片具有一旁路金屬片之一實施例結構圖。第6圖為第5圖實施例的返回損失實驗量測結果。第7圖為本發明天線之輻射金屬片具有一旁路金屬片之另一實施例結構圖。 [元件符號說明] 1 : 一種雙頻平面式單偶極天線垂直配置於一介質基板上 1 0 : —種雙頻平面式單偶極天線之輻射元件 1 1 :輻射金屬片 12:介質基板Page 10 519779 Brief description of the drawings [Simplified description of the drawings] Fig. 1 is a structural diagram of an embodiment of an radiating metal sheet of an antenna of the present invention arranged vertically on a dielectric substrate. FIG. 2 is a structural diagram of an embodiment of a radiating metal sheet of an antenna of the present invention. Fig. 3 is an experimental measurement result of return loss of an embodiment of the antenna of the present invention. FIG. 4 is a structural diagram of another embodiment of a radiating metal sheet of an antenna of the present invention. Fig. 5 is a structural diagram of an embodiment in which the radiating metal sheet of the antenna of the present invention has a bypass metal sheet. Fig. 6 is a measurement result of return loss experiment in the embodiment of Fig. 5. Fig. 7 is a structural diagram of another embodiment in which the radiating metal sheet of the antenna of the present invention has a bypass metal sheet. [Explanation of component symbols] 1: A dual-frequency planar single-dipole antenna is vertically arranged on a dielectric substrate 1 0: a radiating element of a dual-frequency planar single-dipole antenna 1 1: radiating metal sheet 12: dielectric substrate

519779 圖式簡單說明 [元件符號說明]519779 Brief description of the drawing [Description of component symbols]

第12頁 13 饋入點或表面黏著焊點 14 訊號傳 Ψμ 線 15 接地面或行動通訊手機之接地面 16 介質基板或行動通訊手機之一電路板 17 連接金屬線 2 ·· 輻射金屬片 21 表面電流路徑 22 饋入點 23 第一狹縫 24 第二狹縫 31 ： :第一 ( 低頻 ) 操作模態 32 : :第二 ( 高頻 ) 操作模態 4:輻射金屬片 41 ：電流路徑 42 ：饋入點 43 ：第一 •狹縫 431 :第一狹缝之較長支路狹缝 432 :第一狹缝之較短支路狹縫 44 ：第二 -狹缝 519779 圖式簡單說明 [元件符號說明] 5·輪射金屬片 51 第電流路徑 52 饋入點 53 第一狹缝 54 第二狹縫 55 旁路金屬片 56 第 — 電流路徑 6 1 :輻射金屬片5未加旁路金屬片5 5之返回損失量測結果 6 2 :輻射金屬片5加入旁路金屬片5 5之返回損失量測結果 6 0 1 :第一（低頻）操作模態 6 0 2 :第二（高頻）操作模態 7 1 :第一電流路徑 7 2 :饋入點 7 3 :第一狹縫 7 3 1 :第一狹縫之較長支路狹縫 7 3 2 :第一狹縫之較短支路狹縫 74 :第二狹縫 7 5 :旁路金屬片 7 6 :第二電流路徑Page 12 13 Feeding point or surface bonding solder joint 14 Signal transmission μ line 15 Ground plane or ground plane of mobile phone 16 Dielectric substrate or circuit board of one of mobile phone 17 Connecting metal wire 2 · Radiation metal sheet 21 Surface Current path 22 Feed point 23 First slit 24 Second slit 31:: First (low frequency) operating mode 32:: Second (high frequency) operating mode 4: Radiation sheet 41: Current path 42: Feed point 43: The first slit 431: the longer branch slit of the first slit 432: the shorter branch slit of the first slit 44: the second-slit 519779 Explanation of symbols] 5 · Laser metal sheet 51 First current path 52 Feed point 53 First slit 54 Second slit 55 Bypass metal sheet 56 First — Current path 6 1: Radiation metal sheet 5 Without bypass metal sheet 5 5 Return loss measurement results 6 2: Radiation metal sheet 5 Add bypass metal 5 5 Return loss measurement result 6 0 1: First (low frequency) operation mode 6 0 2: Second (high frequency) operation mode 7 1: First current path 7 2: Feed point 7 3: No. One slit 7 3 1: the longer branch slit 7 3 2 of the first slit: the shorter branch slit 74 of the first slit 74: the second slit 7 5: the bypass metal sheet 7 6: the first Two current paths

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Claims

5!9779 7年" 月bn? 修缚六、申請專利範圍 1. 一種雙頻平面式單偶極天線之輻射金屬片，包含：一饋入點；及兩狹缝（一第一狹缝及一第二狹缝），分別由該輻射金屬片之一邊緣延伸至該輻射金屬片之内部，藉由該兩狹缝之區隔，使該輻射金屬片形成一單一的蜿蜒路徑，該路徑用於該天線之二操作頻率之電流路徑，且該路徑具有一起始端及一末端，該起始端為該饋入點，該末端延伸至該輻射金屬片之邊緣。 2. 如申請專利範圍第1項之輻射金屬片，其中該二操作頻率包括一高頻及一低頻，該路徑之長度接近該高頻之1 / 2 波長’且該路徑之長度接近該低頻之1/ 4波長。 3. 如申請專利範圍第1項之輻射金屬片，其中該第一狹縫具有至少一個9 0度或接近9 0度之折彎，而該第二狹縫為一長直狹縫。 4. 如申請專利範圍第1項之輻射金屬片，其中該第一狹縫具有二支路狹缝，而該第二狹缝為一長直狹缝。 5. —種雙頻平面式單偶極天線之輻射金屬片，包含：一饋入點；及兩狹缝（一第一狹缝及一第二狹缝），分別由該輻射金屬片之一邊緣延伸至該輻射金屬片之内部，藉由該狹缝之區5! 9779 7 years " month bn? Repair 6. Application scope 1. A radiating metal sheet of a dual-frequency planar single dipole antenna, including: a feed point; and two slits (a first slit And a second slit), extending from one edge of the radiating metal sheet to the inside of the radiating metal sheet respectively, and by separating the two slits, the radiating metal sheet forms a single meandering path, the The path is used for the current path of the two operating frequencies of the antenna, and the path has a starting end and an end, the starting end is the feeding point, and the end extends to the edge of the radiating metal sheet. 2. If the radiating metal sheet of the first patent application range, wherein the two operating frequencies include a high frequency and a low frequency, the length of the path is close to 1/2 wavelength of the high frequency 'and the length of the path is close to the low frequency. 1/4 wavelength. 3. The radiating metal sheet according to item 1 of the patent application scope, wherein the first slit has at least one bend at or near 90 degrees, and the second slit is a long straight slit. 4. The radiating metal sheet according to item 1 of the patent application scope, wherein the first slit has two branch slits, and the second slit is a long straight slit. 5. — A radiating metal sheet of a dual-frequency planar single dipole antenna, including: a feed point; and two slots (a first slot and a second slot), each of which is one of the radiating metal sheet The edge extends into the interior of the radiating metal sheet, through the area of the slit

第14頁 519779 六、申請專利範圍隔，使該輻射金屬片形成一婉诞第一電流路徑，該第一電流路徑用於該天線之二操作頻率之電流路徑，且該第一電流路徑具有一起始端及一末端，該起始端為該饋入點，該末端延伸至該輻射金屬片之邊緣；及一旁路金屬片，用以形成一第二電流路徑，該第二電流路徑亦用於該天線之兩操作頻率之電流路徑，其起始點與末端與該第一電流路徑相同。 6. 如申請專利範圍第5項之輻射金屬片，其中該二操作頻率包括一高頻及一低頻，該第一電流路徑之長度接近該高頻之1 / 2波長，同時亦接近該低頻之1 / 4波長，該第二電流路徑之長度則略短於該第一電流路徑之長度。 7. 如申請專利範圍第5項之輻射金屬片，該第一狹縫具有一個9 0度或接近9 0度之折彎，而該第二狹缝為一長直狹缝。 8. 如申請專利範圍第5項之輻射金屬片，其中該第一狹缝包含一具有至少一個9 0度或接近9 0度折彎的較長支路狹縫及一較短的長直支路狹缝，而該第二狹缝為一長直狹縫。 9. 如申請專利範圍第5項之輻射金屬片，其中該旁路金屬片跨過該第二狹缝，用以形成該第二電流路徑。Page 14 519779 VI. The scope of the patent application makes the radiating metal sheet form a eerie first current path, which is used for the current path of the two operating frequencies of the antenna, and the first current path has together A starting end and an end, the starting end being the feeding point, the end extending to the edge of the radiating metal sheet; and a bypass metal sheet for forming a second current path, which is also used for the antenna The current path of the two operating frequencies has the same starting point and end as the first current path. 6. As for the radiating metal sheet of the scope of application for patent No. 5, wherein the two operating frequencies include a high frequency and a low frequency, the length of the first current path is close to the 1/2 wavelength of the high frequency, and is also close to the low frequency. 1/4 wavelength, the length of the second current path is slightly shorter than the length of the first current path. 7. In the case of the radiating metal sheet according to item 5 of the patent application, the first slit has a bend of 90 degrees or close to 90 degrees, and the second slit is a long straight slit. 8. The radiating metal sheet according to item 5 of the scope of patent application, wherein the first slit includes a longer branch slit with at least one 90 degree or near 90 degree bend and a shorter long straight branch Road slit, and the second slit is a long straight slit. 9. The radiating metal sheet according to item 5 of the application, wherein the bypass metal sheet crosses the second slit to form the second current path.

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