TW200418229A

TW200418229A - Planar dual L-type double-frequency antenna

Info

Publication number: TW200418229A
Application number: TW92101089A
Authority: TW
Inventors: ming-hao Ye
Original assignee: D Link Corp
Priority date: 2003-01-20
Filing date: 2003-01-20
Publication date: 2004-09-16
Also published as: TWI232613B

Abstract

A kind of planar dual L-type double-frequency antenna is disclosed in the present invention. The antenna is manufactured through the following steps. On one side face of the dielectric substrate, a coplanar waveguiding wire or a microstrip is printed, and one of its ends is used as the signal-feeding terminal. On the same side face or the other side face of the dielectric substrate, a grounding metal face corresponding to the position of the coplanar waveguiding wire or the microstrip is printed such that a constant separation distance is maintained between the grounding metal face and the coplanar waveguiding wire or the microstrip. The other end of the coplanar waveguiding wire or the microstrip is extended toward the position excluding the grounding metal face, so as to extend from its longitudinal axial side to form one radiation body having a reversed L shape. The grounding metal face extends from the position near the radiation body having a reversed L shape toward the position excluding the grounding metal face to form the other radiation body having a reversed L shape. Both radiation bodies are extended along the corresponding direction or parallel direction; and a constant separation distance is maintained between them with the length approximately equal to one quarter wavelength of each frequency band of the double-frequency section such that each radiation body can respectively generate different frequency band signals.

Description

200418229 五、發明說明（1) 發明所屬之技術本發明係一作於一介電質基線0 領域：種L型天線，尤指一種可利用印刷技術製板上，以產生雙頻段之平面式雙L型天先前技術：，傳、·充通裝置上所使用之[型天線，參閱第^圖示，包括一同軸電纜線10，該同軸電纜線1〇包含一内 14(或稱心軸）與外導體16(或稱遮蔽網或地線），該内導與外導體16間係藉一絕緣介電質材料17隔開，以入軸電纜線1 0之該内導體14與外導體丨6形成一電磁學上所二之同心：體：該同軸電纜線10之外緣包覆有一絕緣：皮9，二一鈿係連接到一無線通信裝置之控制電路上（圖中未顯不），以利用該同軸電纜線丨0作為饋入線，其另— 端上則套言史有一金屬#地平板18，該金屬接地平板;— 該外導體16相連接，以將該同韩電纟覽線1〇之外導體16連= 呈大地，該另一端並由該内導體14延伸出一段導體該導體12係呈L狀延伸至該金屬接地平板18外，形成—呈倒L狀之輻射體，該倒l狀輻射體之長度與該天線之並率間具有-定之比例㈣’該種天線—般均為單頻ς ”員傳統上，為令該種L型天線更輕薄短小，已有業者。此種天線製作於一印刷電路板上，參閱第2圖所示，該= 微帶式之L型天線包括一介電質基板27，該介電質基板 ’侧面上印製有一微帶線24，俾利用該微帶線24之一端作 200418229 五、發明說明（2) 為訊=饋入端241，該介電質基板27之另一側面上對應於該微帶線24之位置，則印製有一接地金屬面28，該微帶線 24之另一端係向對應於該接地金屬面28以外之位置，延伸出一呈倒L狀之輻射體242，該倒l狀輻射體242之長度與該天線之共振頻率間具有一定之比例關係，該種天線一般亦為單頻設計。200418229 V. Description of the invention (1) The technology to which the invention belongs The invention relates to a dielectric baseline 0 field: an L-shaped antenna, especially a planar double-L that can be produced on a board using printing technology to produce dual-band Modeling technology: [Type antenna used on the charging device, see the figure ^, includes a coaxial cable 10, the coaxial cable 10 includes an inner 14 (or a mandrel) and an outer A conductor 16 (also known as a shielding network or a ground wire). The inner conductor and the outer conductor 16 are separated by an insulating dielectric material 17 and are formed by the inner conductor 14 and the outer conductor 丨 6 of the incoming cable 10. The concentricity of one electromagnetic field: the body: the outer edge of the coaxial cable 10 is covered with an insulation: leather 9, 21 is connected to the control circuit of a wireless communication device (not shown in the figure), The coaxial cable 丨 0 is used as a feed line, and the other end is covered with a metal #ground plate 18, which is a metal ground plate;-the outer conductor 16 is connected to connect the same with the Korean electric line 1 〇 Outer conductor 16 is connected to the ground, the other end extends from the inner conductor 14 The segment conductor and the conductor 12 extend in an L shape to the outside of the metal ground plane 18 to form an inverted L-shaped radiator. The length of the inverted L-shaped radiator has a fixed ratio with the union ratio of the antenna. This type of antenna is generally single-frequency. Traditionally, in order to make this type of L-type antenna lighter, thinner and shorter, there are already industry players. This type of antenna is made on a printed circuit board. Refer to Figure 2 and this = micro The strip-shaped L-shaped antenna includes a dielectric substrate 27. A microstrip line 24 is printed on the side of the dielectric substrate. One end of the microstrip line 24 is used as 200418229. V. Description of the invention (2) = Feed-in terminal 241, on the other side of the dielectric substrate 27 corresponding to the position of the microstrip line 24, a ground metal surface 28 is printed, and the other end of the microstrip line 24 is directed to the ground Outside the metal surface 28, an inverted L-shaped radiator 242 is extended. The length of the inverted L-shaped radiator 242 has a certain proportional relationship with the resonance frequency of the antenna. This type of antenna is also generally a single-frequency design. .

此外’另有業者利用共面波導（C〇pianar Wave Gu 1 de )作為饋入線，將此種L型天線，製作於一印刷電路板上’蒼閱第3圖所示，該種共面波導式之L型天線包括一介電質基板37，該介電質基板37 一侧面上印製有一共面波導線34 ’該共面波導線34之一端係作為訊號饋入端34ι，在该共面波導線3 4之同一面上，對應於該共面波導線3 4之周緣位置’則印製有一接地金屬面38，該接地金屬面38係與該共面波導線34保持一定間隔，該共面波導線34之另一端則延伸至該接地金屬面3 8以外，形成一呈倒L狀之輻射體3 42，該倒L狀輻射體342之長度與該天線之共振頻率間具有一定之比例關係，且該種天線亦為單頻設計。In addition, another manufacturer uses a coplanar waveguide (Coppianar Wave Gu 1 de) as a feed line to make this L-shaped antenna on a printed circuit board. This type of coplanar waveguide is shown in Fig. 3 The L-shaped antenna includes a dielectric substrate 37, and a coplanar waveguide line 34 is printed on one side of the dielectric substrate 37. One end of the coplanar waveguide line 34 serves as a signal feeding terminal 34m. A ground metal surface 38 is printed on the same surface of the planar waveguide line 34 corresponding to the peripheral position of the coplanar waveguide line 34, and the ground metal surface 38 is maintained at a certain distance from the coplanar waveguide line 34. The other end of the coplanar waveguide line 34 extends beyond the ground metal surface 38 to form an inverted L-shaped radiator 3 42. The length of the inverted-L-shaped radiator 342 and the resonance frequency of the antenna have a certain value. Proportional relationship, and this antenna is also designed for single frequency.

近年來，由於行動通訊產品之市場需求大增，使得無線通訊之發展更為快速，在眾多無線通訊標準中，最引人〉主目者乃美國電子電機工程師協會（以下簡稱I EEE ) 802. 11 無線區域網路（wireiess Local Area Network)協定，IEEE 8 0 2. 1 1協定係制定於1 9 97年間，該協定不僅 k供了無線通訊上許多前所未有之功能，還提供了可令各種不同廠牌之無線產品得以相互溝通之解決方案，該協定In recent years, as the market demand for mobile communication products has increased significantly, the development of wireless communication has become faster. Among the many wireless communication standards, the most attractive person is the American Institute of Electronic and Electrical Engineers (hereinafter referred to as I EEE) 802. 11 Wireless Local Area Network (Wireiess Local Area Network) agreement. The IEEE 8 0 2. 1 1 agreement was established in 1997. The agreement not only provides many unprecedented functions in wireless communication, but also provides a variety of different functions. A solution for the mutual communication of the brand's wireless products, the agreement

第6頁 200418229 五、發明說明（3) --- ----- 之制定無疑為無線通訊之發展，開啟了一個新的‘里程碑。然而，在2〇〇〇年8月間，IEEE為令8〇211協定能成為美國電子電機工程師協會（IEEE) /美國國家標準協會（ANSI)及國際標準組織（ISO) /國際電子技術公會（ IEC)間之—聯合標準’乃對其作了更進一步之修訂，其修訂内容中增加了二項重要的内容，即IEEE 8 0 2· lia協定及I EEE 8 0 2 · 1 l b 協疋，根據该一協定之規定，在擴展之標準實體層中，其工作頻帶必須分別設置在50億赫茲（5GHz)與24億赫茲 (2 · 4GHz)，故當一無線通訊產品欲同時使用該二種無線通訊協定時，前述傳統之L型天線即無法滿足此一須求，而必需根據頻帶上之要求’安裝多個天線，然而，此舉不僅增加了零件成本、安裝程序，更需在該無線通訊產品上騰出較多之空間，以安裝該等L型天線，致該無線通訊產品之體積始終無法輕易縮小’以符合輕薄短小之設計趨勢。發明内容：有鑑於前述傳統L型天線，均屬單頻天線，無法滿足多頻帶上之要求，發明人乃根據多年來從事天線製造之技術經驗，及所累積之專業知識，針對L型天線之特性，悉心研究各種解決方案，並經不斷研究、實驗與改良後，終於開發設計出本發明之平面式雙L型之雙頻天線。本發明之一目的，係在一介電質基板之一側面上，印製一微帶線，俾利用該微帶線之一端作為訊號饋入端，並在該介電質基板之另一側面上，對應於該微帶線之位置，Page 6 200418229 V. Description of the invention (3) --- ----- The development of wireless communication will undoubtedly start a new 'milestone'. However, in August 2000, the IEEE made it possible for the 8021 agreement to become the Institute of Electrical and Electronics Engineers (IEEE) / American National Standards Institute (ANSI) and the International Standards Organization (ISO) / International Electronic Technology Association (IEC) ) Between the-joint standards' is a further amendment, two important contents have been added to the revised content, namely the IEEE 80 2 · lia agreement and I EEE 8 0 2 · 1 lb agreement, according to The agreement stipulates that in the extended standard physical layer, the operating frequency bands must be set at 5 billion hertz (5GHz) and 2.4 billion hertz (2.4 GHz), so when a wireless communication product wants to use the two wireless In the communication protocol, the aforementioned traditional L-shaped antenna cannot meet this requirement, and it is necessary to 'install multiple antennas according to the requirements on the frequency band. However, this not only increases the cost of parts and installation procedures, but also requires the wireless communication There is more space on the product to install these L-shaped antennas, so the volume of the wireless communication product cannot always be easily reduced to meet the trend of thin, light and short designs. Summary of the Invention: In view of the fact that the aforementioned traditional L-shaped antennas are all single-frequency antennas and cannot meet the requirements on multiple frequency bands, the inventor has based on the years of technical experience in antenna manufacturing and the accumulated professional knowledge. Characteristics, carefully studied various solutions, and after continuous research, experiment and improvement, finally developed and designed the planar dual L-type dual-frequency antenna of the present invention. One object of the present invention is to print a microstrip line on one side of a dielectric substrate, and use one end of the microstrip line as a signal feed-in terminal, and on the other side of the dielectric substrate Above, corresponding to the position of the microstrip line,

200418229 五、發明說明（4) ~- 印製一接地金屬面，該微帶線之另一媳你 *屬面以外之位置延伸，並由其縱向= = 體之位置，向錢地㈣面Λ Λ _200418229 V. Description of the invention (4) ~-Print a grounded metal surface. The other side of the microstrip line extends beyond your own surface, and extends from its longitudinal position to the body surface. Λ _

— _ 1 1直延伸出另一呈倒L 狀之輪射體’該二輕射體係彼此間伴括况此间1示符—定間隔，且沿對應方向或同一方向平行延伸，俾各該輕射體可分別用以接收不同頻段之訊號。本發明之另一目的，係在一介電質基板之一側面上，印製一共面波導線，俾利用該共面波導線之一端作為訊號饋入’並在a亥；I電貝基板之同一側面上，對應於該共面波導線之周緣位置’印製一接地金屬面，該接地金屬面係與該共面波導線保持一定間隔，該共面波導線之另一端係向該接地金屬面以外延伸，並由其縱向軸向一側延伸出一呈倒L狀之輻射體，而該接地金屬面則由鄰近於該倒L狀輻射體之位置，向該接地金屬面以外之位置延伸出另一呈倒 L狀之輻射體，該二輻射體係彼此間保持一定間隔，且沿對應方向或同一方向平行延伸，俾各該輻射體可分別用以接收不同頻段之訊號。本發明之又一目的，係在該二輻射體之長度約分別等於雙頻段中各頻段波長之四分之一長度，俾各該輻射體可分別用以接收IEEE 8 0 2.1 1 a協定及IEEE 80 2· lib協定所規定之雙頻帶訊號。為便貴審查委員能對本發明之形狀、構造、設計原理及其功效，有更進一步之認識與瞭解，茲列舉若干實施— _ 1 1 Straightly extends another round L-shaped projectile. 'The two light shot systems are accompanied by each other. Here the 1 indicator-a fixed interval, and extending in parallel in the corresponding direction or the same direction, each of the light The emitters can be used to receive signals in different frequency bands. Another object of the present invention is to print a coplanar waveguide line on one side of a dielectric substrate, and use one end of the coplanar waveguide line as a signal feed-in and a On the same side, a ground metal surface is printed corresponding to the peripheral position of the coplanar waveguide line, the ground metal surface is kept at a certain distance from the coplanar waveguide line, and the other end of the coplanar waveguide line is directed to the ground metal Extending beyond the surface and extending from the longitudinal axis to an inverted L-shaped radiator, the ground metal surface extends from a position adjacent to the inverted L-shaped radiator to a position other than the ground metal surface There is another inverted L-shaped radiator. The two radiation systems maintain a certain distance from each other and extend in parallel in the corresponding direction or the same direction. Each of the radiators can be used to receive signals in different frequency bands. Another object of the present invention is that the length of the two radiators is approximately equal to a quarter of the wavelength of each frequency band in the dual frequency band. Each of the radiators can be used to receive the IEEE 8 0 2.1 1 a protocol and the IEEE. 80 2 · Dual-band signals as specified in the lib agreement. In order that the review committee can further understand and understand the shape, structure, design principles and effects of the present invention, several implementations are enumerated.

200418229 五、發明說明（5) 例，並配合圖示，詳細說明如下：實施方式：在本$明之一較佳實施例中，請參閱第4圖所示，係在：ί電質基板47之一侧面上，印製一微帶線44，俾利用200418229 V. Description of the invention (5) Example, with the illustration, the detailed description is as follows: Implementation mode: In a preferred embodiment of the present invention, please refer to FIG. 4 and refer to: On one side, a microstrip line 44 is printed.

Sf線4 4之纟而作為訊號饋入端4 4 1，並在該介電質基板47之另侧面上，對應於該微帶線44之位置，印製一接地金屬面48，該微帶線44之另一端係向對應於該接地金屬面48 U—夕之位置延伸，並由其縱向軸向一侧延伸出一呈倒 L狀之輻射體442，而該接地金屬面48則由鄰輻射細之位置，向該接地金屬面置延Ί 另一呈倒L·狀之輻身十^ ^ y iT 世直之1甲出 481係彼此保持：=81，遠二呈倒L狀之輻射體442、射體442、481可八〜間；"、且沿對應方向延伸，俾各該輻在該較佳實：Γ 不同頻段之訊號。用以接收不同頻；1由於各該輕射體442、481係分別應分別與該= 故各該輕射體442、481之長度例關係。在本發明=^之不同共振頻率間具有一定之比 481之長度以約分二2父佳實施例中’各該輻射體“2、之四分之—長声1別/於所欲設計之雙頻段中各頻段波長 442係作為低W、'取佳’其巾各該輻射體中較I之輕射體體，俾不同長、Λ久“韓射體481係作為高頻輕射 IEEE 8〇2.lla~ 射體442、481可分別用以接收訊號。疋及1EEE 80 2. 1 1 b協定所規定之雙頻帶The Sf line 4 4 is used as a signal feeding end 4 4 1 and a ground metal surface 48 is printed on the other side of the dielectric substrate 47 corresponding to the position of the microstrip line 44. The microstrip The other end of the line 44 extends to a position corresponding to the ground metal surface 48 U-xi, and an inverted L-shaped radiator 442 extends from one side of the longitudinal axis, and the ground metal surface 48 is adjacent to the ground metal surface 48. The position of the radiation is thin, and the extension is extended toward the grounded metal surface. Another inverted L · shaped radiating body ^ ^ y iT Straight 1A and 481 series keep each other: = 81, the far second is an inverted L-shaped radiator 442, the projectiles 442, 481 may be eight to ten; ", and extend in the corresponding direction, each of the spokes in the preferred embodiment: Γ signals in different frequency bands. It is used to receive different frequencies; 1 Since each of the light emitters 442, 481 should be respectively related to the length of the light emitters 442, 481, respectively. In the present invention, the different resonance frequencies have a certain ratio of 481. The length is about two to two. In the preferred embodiment, 'each of the radiators' 2, two-quarters-long sound 1 different from the desired design. The wavelength 442 of each frequency band in the dual frequency band is a low-W, 'better' light emitter, which is a lighter body than I in the radiator. The different length and long-lived "Korean body 481 series is a high-frequency light-emitting IEEE 8 〇2.lla ~ The projectiles 442 and 481 can be used to receive signals respectively.疋 and 1EEE 80 2. 1 1 b

第9頁 200418229 五、發明說明（6) 在本發明之另一較佳實施例中，請參閱第5圖所示，係在一介電質基板57之一侧面上，印製一共面波導線54，俾利用該共面波導線5 4之一端作為訊號饋入端5 4 1，並在該介電質基板5 7之同一側面，對應於該共面波導線5 4之周緣位置’印製一接地金屬面5 8，該接地金屬面5 8係與該共面波導線54保持一定之間隔，該共面波導線54之另一端係向该接地金屬面5 8以外之位置延伸，並由其縱向軸向一側延伸出一呈倒L狀之輻射體5 4 2，而該接地金屬面5 8則由鄰近於該倒L狀輕射體5 4 2之位置，向該接地金屬面5 8以外之位置延伸出另一呈倒L狀之輻射體5 8 1，該二呈倒L狀之輻射體5 4 2、5 8 1係彼此保持一定間隔，且沿同一方向平行延伸’俾各該輪射體5 4 2、5 8 1可分別用以接收不同頻段之訊號。另’本發明根據第5圖所示之天線結構，將共面波導線54、二輻射體542、581及接地金屬面58，印製至一厚度約為0 · 8毫米（mm)且介電係數約為4 · 3〜4 · 7之一平板狀介電質基板57上’實際製作出本發明所稱之平面式雙[型之雙頻天線，其中該共面波導線54及該二呈倒L狀之輻射體 542、581之寬度約1毫米（mm)，低頻輻射體542之長度約23 毫米（mm)，高頻輻射體581之長度約12毫米（mm)，令該天線操作於23,5881 〜32.5241 億赫兹（2.35881 〜3.25241 GHz)及 49. 7438 〜55.0 92 0 億赫兹（ 4.9 7438 〜5.5 0 9 2 0 GHz) 二個頻段，實測其回返損失（Return Loss)，其量測結果如第9圖所示，二個頻段都優於9分貝（dB)。因此，由該Page 9 200418229 V. Description of the invention (6) In another preferred embodiment of the present invention, please refer to FIG. 5 to print a coplanar waveguide line on one side of a dielectric substrate 57 54. 俾 Use one end of the coplanar waveguide 5 4 as the signal feed-in end 5 4 1 and print on the same side of the dielectric substrate 57 as corresponding to the peripheral position of the coplanar waveguide 54. A ground metal surface 58 is maintained at a certain distance from the coplanar waveguide 54. The other end of the coplanar waveguide 54 extends to a position other than the ground metal surface 58. A longitudinal L-shaped radiator 5 4 2 extends from one side of the longitudinal axis, and the grounded metal surface 5 8 faces the grounded metal surface 5 from a position adjacent to the inverted L-shaped light emitter 5 4 2. An inverted L-shaped radiator 5 8 1 is extended at a position other than 8. The two inverted-L-shaped radiators 5 4 2 and 5 8 1 are spaced apart from each other and extend in parallel in the same direction. The projectiles 5 4 2, 5 8 1 can be used to receive signals in different frequency bands. In addition, according to the antenna structure shown in FIG. 5, the present invention prints the coplanar waveguide line 54, the two radiators 542 and 581, and the ground metal surface 58 to a thickness of about 0.8 mm and a dielectric. The planar dielectric substrate 57 having a coefficient of approximately 4 · 3 ~ 4 · 7 is used to actually produce a planar dual-type dual-frequency antenna as described in the present invention, in which the coplanar waveguide 54 and the two The width of the inverted L-shaped radiators 542, 581 is about 1 millimeter (mm), the length of the low-frequency radiator 542 is about 23 millimeters (mm), and the length of the high-frequency radiator 581 is about 12 millimeters (mm). 23,5881 to 32.5241 billion hertz (2.35881 to 3.25241 GHz) and 49.7438 to 55.0 92 billion hertz (4.9 7438 to 5.5 0 9 2 0 GHz). Measure the return loss (Return Loss) and measure it. The results are shown in Figure 9. Both bands are better than 9 decibels (dB). So by this

第10頁 200418229 五、發明說明（7) 一等量測結果顯示’本發明所設計之平面式雙L型之雙頻天線，確可分別用以接收IEEE 8 02·〗la協定及ίΕΕΕ 、 8 0 2 · 1 1 b協定所規定之雙頻帶訊號。在該另一較佳實施例中，由於各該輻射體542、581係分別用以接收不同頻段之訊號，故各該輻射體542、581之長度，應分別與瀛天線所欲設計之不同共振頻率間具有_ 定之比例關係。在本發明之該另一較佳實施例中，ς該輕射體5 4 2、5 8 1之長度以約分別等於所欲設計之雙頻段中各頻段波長之四分之一長度為最佳，其中各該輻射體中較長 =輻射體542係作為低頻輻射體，較短之輻射體581係作為高頻輻射體，俾不同長度之各該輻射體542、581可分別用以接收IEEE 80 2.1 1 a協定及IEEE 8〇2nb協定所規定之雙頻帶訊號。一在本發明之前述較佳實施例中，復請參閱第4及5圖所不，该微帶線44或共面波導線54均係呈直線延伸之長條狀准在本發明貫際施作時，可依實際需要或特性匹配，而將其設計成彎折延伸之長條狀之共面波導線64，如第6 圖所不。^此外’本發明在第4圖中所示之該二輻射體M2、 ;ι_ _在灵際施作時’可依實際需要或特性匹配，而設計二:同、方向平行延伸之輻射體74 2、781，如第7圖所 ^ 1 ，至本發明在第5圖中所示之該二輻射體5 4 2、斗士分u貝際施作時，則可依實際需要或特性匹配，而設计成彼此保拄_令日日_ 〇 , 9 Q Q . 、疋間隔，且沿對應方向延伸之輻射體 842、881，如第8圖所示。 200418229 五、發明說明（8) 本發明根據第6圖所示之天線結構，將共面波導線 6 4·、二輻射體642、681及接地金屬面68，印製至一厚度約為0. 8毫米（mm)且介電係數約為4· 3〜4· 7之一平板狀介電質基板67上，實際製作出本發明所稱之平面式雙[型之雙頻天線。、另’本發明根據第4圖所示之天線結構，將微帶線 44、二輻射體442、481及接地金屬面48，印製至一厚度約為0.8宅米（mm)且介電係數約為4.3〜4. 7之一平板狀介電質基板47上，製作出本發明之平面式雙L型之雙頻天線，其、中該微帶線44及該二呈倒L狀之輻射體442、481之寬度約！毫米（mm)，低頻輻射體442之長度約25毫米（mm)，高頻幸昌射體481之長度約14毫米（mm)，令該天線操作於24〜25億赫茲（2. 4 〜2.5GHz)及 52.5 〜58. 5 億赫兹（5.25 〜5.85GHz) 二個頻段’貫測其回返損失（R e t u r n L 〇 s s )，其量測纟士果如第1 0圖所示’一個頻段都優於1 0分貝（d Β )。因此，由該等量測結果顯示，本所發明所設計之平面式雙L型之雙Page 10 200418229 V. Description of the invention (7) The first measurement results show that the planar dual L-type dual-frequency antenna designed by the present invention can indeed be used to receive IEEE 8 02 · 〖la agreement and ΕΕΕ, 8 0 2 · 1 1 b Dual-band signals as specified in the agreement. In another preferred embodiment, since each of the radiators 542 and 581 is used to receive signals of different frequency bands, the length of each of the radiators 542 and 581 should be different from the resonance of the antenna designed There is a proportional relationship between frequencies. In another preferred embodiment of the present invention, it is best that the length of the light emitter 5 4 2, 5 8 1 is approximately equal to a quarter of the wavelength of each frequency band in the desired dual frequency band. Among them, the longer of each radiator = the radiator 542 is used as a low-frequency radiator, and the shorter radiator 581 is used as a high-frequency radiator. Each of the radiators 542 and 581 of different lengths can be used to receive IEEE 80 respectively. 2.1 1 a and dual-band signals as specified in the IEEE 802nb agreement. In the foregoing preferred embodiment of the present invention, please refer to FIG. 4 and FIG. 5 again. The microstrip line 44 or the coplanar waveguide line 54 are both linearly extending long bars. In operation, it can be designed as a bent and extended coplanar waveguide line 64 according to actual needs or characteristics matching, as shown in FIG. 6. ^ In addition, the two radiators M2 shown in FIG. 4 of the present invention; ι_ _when the spirit is applied 'can be designed according to actual needs or characteristics, and the second design: the radiator 74 extending in the same direction 2. 781, as shown in Figure 7 ^ 1, to the two radiators 5 4 shown in Figure 5 of the present invention 2. When the warrior decibels are applied, they can be matched according to actual needs or characteristics, and Radiators 842, 881 designed to protect each other _ 令日日 _ 〇, 9 QQ., 疋, and extend in the corresponding direction, as shown in FIG. 8. 200418229 V. Description of the invention (8) According to the antenna structure shown in Fig. 6, the present invention prints a coplanar waveguide 6 4 ·, two radiators 642, 681, and a grounded metal surface 68 to a thickness of about 0. 8 millimeters (mm) and one of the flat dielectric substrates 67 having a dielectric constant of about 4 · 3 ~ 4 · 7, a planar dual-type dual-band antenna according to the present invention is actually manufactured. In addition, according to the antenna structure shown in FIG. 4, the present invention prints the microstrip line 44, the two radiators 442, 481, and the ground metal surface 48 to a thickness of about 0.8 square meters (mm) and a dielectric constant. About 4.3 ~ 4.7 on one of the flat dielectric substrates 47, a planar dual L-type dual-frequency antenna of the present invention is fabricated, in which the microstrip line 44 and the two are inverted L-shaped radiation The width of the body 442, 481 is about! Millimeter (mm), the length of the low-frequency radiator 442 is about 25 millimeters (mm), and the length of the high-frequency Xingchang radiator 481 is about 14 millimeters (mm), which enables the antenna to operate at 2.4 to 2.5 billion hertz (2.4 to 2.5 GHz). ) And 52.5 to 5.85 billion Hertz (5.25 to 5.85GHz). The two frequency bands 'continuously measure their return loss (R eturn L 〇ss), and their measurement results are as shown in Figure 10'. At 10 dB (d B). Therefore, the results of these measurements show that the flat double L type double

頻天線，確可分別用以接收IEEE 8 0 2. 1 la協定及IEEE 8 0 2 . 1 1 b協定所規定之雙頻帶訊號。以上所述，僅係本發明之較佳實施例，惟，本發明所主張之權利範圍，並不局限於此，按凡熟悉該項技藝人士，依據本發明所揭露之技術内容，可輕易思及之等效變化，均應屬不脫離本發明之保護範疇。Frequency antennas can indeed be used to receive dual-band signals as specified in the IEEE 802.1 la protocol and the IEEE 802.12.1 b protocol, respectively. The above are only the preferred embodiments of the present invention. However, the scope of the rights claimed by the present invention is not limited to this. According to those skilled in the art, the technical content disclosed by the present invention can be easily considered. And equivalent changes should all belong to the protection scope of the present invention.

第12頁 200418229 圖式簡早說明圖式說明：第1圖係傳統L型天線之示意圖；第2圖係傳統微帶式L型天線之示意圖；苐3圖係傳統共面波導式L型天線之不意圖，第4圖係本發明之一最佳實施例之示意圖；第5圖係本發明之另一最佳實施例之示意圖；第6圖係根據第4及5圖所提供之共面波導線之一最佳貫施例之示意圖；Page 12 200418229 Brief description of the drawings: Figure 1 is a schematic diagram of a traditional L-shaped antenna; Figure 2 is a schematic diagram of a traditional microstrip L-shaped antenna; 苐 3 is a traditional coplanar waveguide L-type antenna It is not intended that FIG. 4 is a schematic diagram of a preferred embodiment of the present invention; FIG. 5 is a schematic diagram of another preferred embodiment of the present invention; and FIG. 6 is a coplanarity provided according to FIGS. 4 and 5 Schematic diagram of one of the best embodiment of the wave conductor;

第7圖係根據第4圖所提供之二輻射體之一最佳實施例之不意圖、，第8圖係根據第5圖所提供之二輻射體之一最實施例之不意圖，第9圖係根據第5圖所提供之天線，實際量測之結果；第1 0圖係根據第4圖所提供之天線，實際量測之結果。主要圖號說明：介電質基板·_·47、57、67FIG. 7 is the intent of one of the best embodiments of the two radiators provided in FIG. 4, FIG. 8 is the intent of one of the best embodiments of the two radiators provided in FIG. 5, FIG. 9 The figure is the actual measurement result based on the antenna provided in Figure 5. Figure 10 is the actual measurement result based on the antenna provided in Figure 4. Description of main drawing numbers: Dielectric substrates 47, 57, 67

微帶線.........44 共面波導線"·54、64 訊號饋入端…441、541 輻射體.........442 > 481、542 > 581、642、681、 742 、 781 > 842 、 881 接地金屬面…48、58、68Microstrip lines ...... 44 Coplanar waveguide lines " 54, 64 signal feed ends ... 441, 541 radiators ......... 442 > 481, 542 > 581, 642, 681, 742, 781 > 842, 881 Ground metal surface ... 48, 58, 68

第13頁Page 13

Claims

200418229 六、申請專利範圍 1、一種平面式雙L型之雙頻天線，包栝·· 一介電質基板；一微帶線，該微帶線係印製在該介電質基板之其一端係作為訊號饋入端； ^雪質基板一接地金屬面，該接地金屬面係印製在該"電只 ^ ,, 挪婢夕另/端向對微帶線之力側面上對應於該微帶線之另一侧面上，幸田射體’其中一輻射體係由該侧應於該接地金屬面以外之位置延伸 '益由其縱向軸向〆4 戶^延伸出之一呈倒L狀之輻射體，另一輻射體係由該接地至屬面上鄰近於該倒L狀韓射體之對應位置，向該接地金屬面以外之位置所延伸出之另一呈倒L狀之輻射體，該二 ::射體係彼此保持一定間隔，分別用以接收不同頻段之訊號。 2、如申請專利範圍第丨項所述之體之長度約分別笙认輪p ^ ^ 头T各该輻射刀另】4於雙頻段中各頻段波長之度。刀 < 一長叮丸3、如巾請專利範圍们項所述之天線，其中今n册，可為一呈彎折延伸之長條狀。 /、中違破帶線 4、如申請專利範圍第1項所述之天線，其體係彼此保持一定間隔，且沿對應方向延伸。人田于 5如申请專利範圍第1項所述之天線，其中哕-^ 體係彼此保持-定間隔，且沿同一方向平行延幸虽射 6、一種平面式雙L型之雙頻天線，包括：一介電質基板；200418229 6. Scope of patent application 1. A planar dual L-type dual-frequency antenna, including a dielectric substrate; a microstrip line printed on one end of the dielectric substrate It is used as the signal feed-in terminal; ^ Snow substrate is a grounded metal surface, which is printed on the "Electric only" ,, and the other side of the force on the microstrip line corresponds to the On the other side of the microstrip line, the Kota projectile 'one of the radiation systems extends from the side beyond the ground metal surface', and one of the four extending from the longitudinal axis of the house is inverted L-shaped. A radiator, another radiation system from the ground to the corresponding position adjacent to the inverted L-shaped Korean emitter on the subordinate surface, and another inverted L-shaped radiator extending to a position other than the grounded metal surface, the 2 :: The radio systems maintain a certain interval from each other to receive signals in different frequency bands. 2. The length of the body as described in item 丨 of the scope of the patent application is approximately the length of each of the radiating blades p ^ ^ at the head T and the other] 4 at the wavelength of each band in the dual band. Knife < A long ding pill 3. The antenna described in the item of patent scope, such as the towel, in which the n books can be a long strip that is bent and extended. / 、 Broken strip line 4. The antennas as described in item 1 of the scope of patent application, their systems are kept at a certain distance from each other and extend in the corresponding direction. The antenna as described in item 1 of the patent application scope of Rentian Yu 5, in which the 哕-^ system maintains a fixed interval from each other and extends in parallel in the same direction. Although it is a flat-type dual-L dual-band antenna, it includes: A dielectric substrate;

第14頁 200418229 六、申請專利範圍一共面波導線，該共面波導線係印製在該介電質基板之一側面上，其一端係作為訊號饋入端，一接地金屬面，該接地金屬面孫印製在該介電質基板上與該共面波導線同一侧面之周緣位置上，且與該共面波導線保持一定間隔；二輻射體，其中一輻射體係由該共面波導線之另一1 向该接地金屬面以外之位置延伸，益由其縱向軸向側戶延伸出之一呈倒L狀之輻射胃，另，輻射體係由：：：：屬面上鄰近於該倒之位置，向；接=二外之位置所延伸出之另一至倒L狀之轉射體賴段之訊號。係彼此保持-定間㉟，分別用以接收不同、：中各該輻射 7、如申請專利範圍第6項所述之天線’^ 一至體之長度約分別等於雙頻段中各頻段波長之痒 η 四分之一長中該共面波輻射其 8、如申請專利範圍第6項所述之導線可為-呈彎折延伸之長條狀。，其中 ^ 9、如申請專利範圍第6項所述之天線/、體係彼此保持一定問ρ ^ ^行疋間隔，且沿對應方 111 、 Mm, 士 H ^ ^述之A 天線該向延伸°^該線，其中輻方向延伸第15頁Page 14 200418229 6. The scope of the patent application is a coplanar waveguide line printed on one side of the dielectric substrate, one end of which is used as a signal feed-in end, a grounded metal surface, and the grounded metal The surface sun is printed on the dielectric substrate at a peripheral position on the same side of the coplanar waveguide line and at a certain distance from the coplanar waveguide line; two radiators, one of which is a radiation system formed by the coplanar waveguide line. The other 1 extends beyond the grounded metal surface, and one of the inverted L-shaped radiating stomachs extends from its longitudinal axis to the side. In addition, the radiation system consists of: ::: the surface is adjacent to the inverted one. Position, direction; then = the signal from another position extending from the position outside the second to the inverted L shape. They are kept between each other and are used to receive different radiation: each of the radiation 7. The antenna as described in item 6 of the scope of the patent application, the length of the antenna is approximately equal to the wavelength of each frequency band in the dual frequency band. A quarter of the length of the coplanar wave radiates its 8. The wire as described in item 6 of the scope of the patent application may be a long strip that extends in a bend. Among them, ^ 9, the antennas described in item 6 of the scope of patent application, and the system should keep a certain interval between each other, and should extend along the corresponding A antennas described by the corresponding parties 111, Mm, H H ^ ° ^ The line where the radial direction extends page 15