TWI466383B - Dual band antenna and wireless communication device using the same - Google Patents
Dual band antenna and wireless communication device using the same Download PDFInfo
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- TWI466383B TWI466383B TW097133151A TW97133151A TWI466383B TW I466383 B TWI466383 B TW I466383B TW 097133151 A TW097133151 A TW 097133151A TW 97133151 A TW97133151 A TW 97133151A TW I466383 B TWI466383 B TW I466383B
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本發明涉及一種天線,尤其涉及一種雙頻天線及應用該雙頻天線之無線通訊裝置。 The present invention relates to an antenna, and more particularly to a dual frequency antenna and a wireless communication device using the same.
隨著無線通訊技術、資訊處理技術之迅速發展,行動電話、個人數位助理(personal digital assistant,PDA)等攜帶型無線通訊裝置競相湧現,進入到千家萬戶,使消費者可隨時隨地享受到高科技帶來之種種便利,亦使得該等攜帶型無線通訊裝置成為現代人日常生活不可缺少之一部分。 With the rapid development of wireless communication technology and information processing technology, mobile wireless communication devices such as mobile phones and personal digital assistants (PDAs) are competing to enter and reach thousands of households, so that consumers can enjoy high anytime and anywhere. The convenience brought by technology has also made these portable wireless communication devices an indispensable part of modern people's daily life.
在該等無線通訊裝置中,用來發射、接收無線電波以傳遞、交換無線電資料訊號之天線裝置,無疑是無線通訊裝置中重要元件之一。目前,單頻天線裝置一般不易滿足人們對雙頻或者多頻段無線通訊裝置之需求,習知雙頻天線一般體積比較大,佔據著無線通訊裝置內很大一部分空間,不易同時滿足不同頻段之通訊系統之要求以及配合無線通訊裝置朝輕薄小型化方向發展之趨勢。 Among these wireless communication devices, an antenna device for transmitting and receiving radio waves to transmit and exchange radio data signals is undoubtedly one of important components in a wireless communication device. At present, single-frequency antenna devices are generally not easy to meet the needs of dual-frequency or multi-band wireless communication devices. Conventionally, dual-frequency antennas are generally large in size, occupying a large part of the space in the wireless communication device, and are not easy to simultaneously meet the communication of different frequency bands. The requirements of the system and the trend towards the development of wireless communication devices in the direction of thinness and miniaturization.
另,雙頻無線通訊裝置內一般包含了高頻天線與低頻天線,然,因無線通訊裝置內設之電路板上一般均配置有許多電子元件,天線裝置進行電磁波輻射時,十分容易被這些電子元件干擾,故天線之輻射效率會降低。 In addition, the dual-band wireless communication device generally includes a high-frequency antenna and a low-frequency antenna. However, since the circuit board built in the wireless communication device is generally provided with many electronic components, the antenna device is easily exposed to electromagnetic waves when subjected to electromagnetic wave radiation. Component interference, so the radiation efficiency of the antenna will be reduced.
有鑒於此,有必要提供一種體積小,干擾低之雙頻天線。 In view of this, it is necessary to provide a dual-frequency antenna with small size and low interference.
另,還有必要提供一種應用所述雙頻天線之無線通訊裝置。 In addition, it is also necessary to provide a wireless communication device to which the dual frequency antenna is applied.
一種雙頻天線,其包括一第一天線部、一第二天線部、一饋入端及一接地端,該第一天線部、第二天線部及饋入端均與該接地端連接,並成為一體,該第一天線部及第二天線部分別設於不同高度之平面;所述第一天線部及第二天線部均位於接地端一側,所述第一天線部為一低頻天線,包括一第一輻射體及一第二輻射體,該第一輻射體包括一直條形之第一片體及一L形之第二片體,該第二片體包括一短邊及一長邊,該第一片體一端連接到第二片體之短邊之端部,該第二輻射體包括一第三片體及一第四片體,該第三片體一端垂直連接第二片體之長邊之末端,另一端垂直連接第四片體之末端;所述第二天線部為一高頻天線,包括一主體及設於該主體一端之一端部及另一端之凸出部,該主體與該第三片體相互平行,且於二者之間形成一狹長缺口,該端部之外緣與該主體平齊,內緣由該主體凸出,該第二天線部沿該凸出部延伸設有一第一彎折部,該第一彎折部與接地端相連。 A dual-frequency antenna includes a first antenna portion, a second antenna portion, a feed end, and a ground end, and the first antenna portion, the second antenna portion, and the feed end are connected to the ground The first antenna portion and the second antenna portion are respectively disposed on planes of different heights; the first antenna portion and the second antenna portion are both located on the ground end side, and the An antenna portion is a low frequency antenna, and includes a first radiator and a second radiator. The first radiator includes a first strip of a straight strip shape and a second sheet of an L shape, the second sheet The body includes a short side and a long side, the first body is connected at one end to the end of the short side of the second body, and the second radiator comprises a third body and a fourth body, the third One end of the piece is perpendicularly connected to the end of the long side of the second piece, and the other end is perpendicularly connected to the end of the fourth piece; the second antenna part is a high frequency antenna, comprising a main body and one end of the main body a protruding portion of the portion and the other end, the main body and the third piece are parallel to each other, and a narrow gap is formed therebetween, outside the end portion The edge is flush with the main body, the inner edge is protruded from the main body, and the second antenna portion extends along the protruding portion to provide a first bent portion, and the first bent portion is connected to the ground end.
一種無線通訊裝置,其包括一電路板,該電路板上設有一訊號傳輸端及一接地面;該無線通訊裝置還包括一雙頻天線,該雙頻天線包括一第一天線部、一第二天線部、一饋入端及一接地端;該第一天線部、第二天線部及饋入端均與該接地端連接,並成為一體,該第一天線部及第二天線部分別設於不同高度之平面;所述第一天線部及第二天線部均位於接地端一側;所述第一天線部為一低頻天線,包括一第一輻射體及一第二輻射體,該第一輻射體 包括一直條形之第一片體及一L形之第二片體,該第二片體包括一短邊及一長邊,該第一片體一端連接到第二片體之短邊之端部,該第二輻射體包括一第三片體及一第四片體,該第三片體一端垂直連接第二片體之長邊之末端,另一端垂直連接第四片體之末端;所述第二天線部為一高頻天線,包括一主體及設於該主體一端之一端部及另一端之凸出部,該主體與該第三片體相互平行,且於二者之間形成一狹長缺口,該端部之外緣與該主體平齊,內緣由該主體凸出,該第二天線部沿該凸出部延伸設有一第一彎折部,該第一彎折部與接地端相連,該饋入端及接地端與電路板之訊號傳輸端及接地面分別電性連接。 A wireless communication device includes a circuit board having a signal transmission end and a ground plane; the wireless communication device further includes a dual frequency antenna, the dual frequency antenna including a first antenna portion, a first a second antenna portion, a feed end and a ground end; the first antenna portion, the second antenna portion and the feed end are connected to the ground end and integrated, the first antenna portion and the second antenna The antenna portions are respectively disposed on the planes of different heights; the first antenna portion and the second antenna portion are both located on the ground end side; the first antenna portion is a low frequency antenna, and includes a first radiator and a second radiator, the first radiator The first sheet body has a strip shape and an L-shaped second sheet body. The second sheet body includes a short side and a long side, and the first sheet body is connected at one end to the short side end of the second sheet body. The second radiator includes a third body and a fourth body, the third body is perpendicularly connected to the end of the long side of the second body, and the other end is perpendicularly connected to the end of the fourth body; The second antenna portion is a high frequency antenna, and includes a main body and a protruding portion disposed at one end and the other end of the one end of the main body. The main body and the third piece are parallel to each other and formed therebetween. a narrow notch, the outer edge of the end is flush with the main body, the inner edge is protruded from the main body, and the second antenna portion extends along the protruding portion to provide a first bending portion, the first bending portion and the first bending portion The grounding end is connected, and the feeding end and the grounding end are electrically connected to the signal transmitting end and the grounding surface of the circuit board respectively.
相較習知技術,所述雙頻天線於獲得兩種工作頻率之同時,充分利用無線通訊裝置不同高度之空間,以利於無線通訊裝置之小型化。同時,所述第一天線部及第二天線部均位於接地端一側,減少外界電子元件之干擾。 Compared with the prior art, the dual-frequency antenna fully utilizes the space of different heights of the wireless communication device while obtaining two working frequencies, so as to facilitate the miniaturization of the wireless communication device. At the same time, the first antenna portion and the second antenna portion are both located on the ground end side, which reduces interference of external electronic components.
100‧‧‧雙頻天線 100‧‧‧Double frequency antenna
10‧‧‧第一天線部 10‧‧‧First antenna unit
11‧‧‧第一輻射體 11‧‧‧First radiator
111‧‧‧第一片體 111‧‧‧ first body
112‧‧‧第二片體 112‧‧‧Second body
1121‧‧‧短邊 1121‧‧‧ Short side
1122‧‧‧長邊 1122‧‧‧Longside
113‧‧‧第一定位孔 113‧‧‧First positioning hole
12‧‧‧第二輻射體 12‧‧‧Second radiator
121‧‧‧第三片體 121‧‧‧ third body
122‧‧‧第四片體 122‧‧‧Four piece
20‧‧‧第二天線部 20‧‧‧second antenna unit
21‧‧‧主體 21‧‧‧ Subject
22‧‧‧端部 22‧‧‧ End
23‧‧‧凸出部 23‧‧‧ protruding parts
24‧‧‧第一彎折部 24‧‧‧First bend
241‧‧‧第二定位孔 241‧‧‧Second positioning hole
30‧‧‧饋入端 30‧‧‧Feeding end
31‧‧‧板體 31‧‧‧ board
32‧‧‧第二彎折部 32‧‧‧Second bend
321‧‧‧第一連接端 321‧‧‧First connection
322‧‧‧第五片體 322‧‧‧5th body
40‧‧‧接地端 40‧‧‧ Grounding terminal
41‧‧‧基体 41‧‧‧ base
411‧‧‧基板 411‧‧‧Substrate
412‧‧‧凸片 412‧‧‧1 piece
42‧‧‧第二連接端 42‧‧‧second connection
43‧‧‧第三連接端 43‧‧‧ third connection
50‧‧‧狹長缺口 50‧‧‧Length gap
圖1係本發明較佳實施方式雙頻天線之立體示意圖。 1 is a perspective view of a dual frequency antenna according to a preferred embodiment of the present invention.
本發明所述雙頻天線裝設於無線通訊裝置、個人數位助理(personal digital assistant,PDA)等攜帶型無線通訊裝置內,用來發射、接收無線電波以傳遞、交換無線電資料訊號。 The dual-band antenna of the present invention is installed in a portable wireless communication device such as a wireless communication device or a personal digital assistant (PDA), and is configured to transmit and receive radio waves to transmit and exchange radio data signals.
請參閱圖1,本發明較佳實施方式雙頻天線100採用金屬薄板製成,其包括一第一天線部10、一第二天線部20、一饋入端30及一接地端40。該第一天線部10、第二天線部20、饋入端30均與該接地端40相連,並經該接地端40連接為一體。 Referring to FIG. 1 , the dual-frequency antenna 100 is made of a thin metal plate, and includes a first antenna portion 10 , a second antenna portion 20 , a feed end 30 , and a ground end 40 . The first antenna portion 10, the second antenna portion 20, and the feed end 30 are connected to the ground terminal 40, and are integrally connected via the ground terminal 40.
該第一天線部10為一低頻天線,用以收發低頻通訊電磁波訊號。該第一天線部10採用曲折形設計,包括一第一輻射體11及一第二輻射體12。 The first antenna portion 10 is a low frequency antenna for transmitting and receiving low frequency communication electromagnetic wave signals. The first antenna portion 10 has a meandering design and includes a first radiator 11 and a second radiator 12.
該第一輻射體11大致呈U型片狀,該第一輻射體11包括一直條形之第一片體111及一L形之第二片體112。該第二片體112包括一短邊1121及一長邊1122,二者於末端處垂直連接。該第一片體111一端連接到第二片體112之短邊1121之端部,使第一片體111與第二片體112之長邊1122平行。該第一片體111之末端及第二片體112之彎折處各開設有一第一定位孔113,該第一定位孔113用以將該雙頻天線100固定於無線通訊裝置內。 The first radiator 11 is substantially U-shaped, and the first radiator 11 includes a first strip 111 of a straight strip shape and a second sheet 112 of an L shape. The second body 112 includes a short side 1121 and a long side 1122, which are vertically connected at the end. One end of the first body 111 is connected to the end of the short side 1121 of the second body 112 such that the first body 111 is parallel to the long side 1122 of the second body 112. A first positioning hole 113 is defined in each of the end of the first body 111 and the second body 112. The first positioning hole 113 is used for fixing the dual-frequency antenna 100 in the wireless communication device.
該第二輻射體12大致呈L型片狀,該第二輻射體12包括一第三片體121及一第四片體122。該第三片體121一端垂直連接第二片體112之長邊1122之末端,另一端垂直連接第四片體122之末端。 The second radiator 12 is substantially L-shaped, and the second radiator 12 includes a third body 121 and a fourth body 122. One end of the third piece 121 is perpendicularly connected to the end of the long side 1122 of the second piece 112, and the other end is perpendicularly connected to the end of the fourth piece 122.
該第四片體122與第一片體111及第二片體112之長邊1122皆兩兩相互平行,且該第四片體122之長度略小於該第一片體111,該第一片體111、第二片體112、第三片體121及第四片體122寬度相當,從而使第一天線部10整體呈一曲折狀。 The fourth body 122 and the long sides 1122 of the first body 111 and the second body 112 are parallel to each other, and the length of the fourth body 122 is slightly smaller than the first piece 111, the first piece The body 111, the second body 112, the third body 121, and the fourth body 122 have the same width, so that the first antenna portion 10 has a meander shape as a whole.
該第二天線部20為一高頻天線,用以收發高頻通訊電磁波訊號,其包括一主體21,該主體21為一條形片狀體,該主體21一端延伸設有一端部22,另一端設有一大致呈半圓弧形之凸出部23。該端部22之寬度略大於該主體21,該端部22之外緣與該主體21平齊,內緣由該主體21凸出,且在與主體21結合處採用外凸之弧形過渡。該凸出部23之外部邊緣大致為一半圓弧形,用以配合容置無線通訊裝置上其他元件,縮小其體積。該凸出部23之中央部分與主 體21一端相連,且與主體21之外緣採用內凹之弧形平滑過渡,從而與主體21外緣連接成一平滑之曲線。該凸出部23之另一端沿垂直於其外切線方向延伸出一第一彎折部24,該第一彎折部24上開設有一第二定位孔241,該第二定位孔241用以將該雙頻天線100固定於無線通訊裝置內。 The second antenna unit 20 is a high frequency antenna for transmitting and receiving high frequency communication electromagnetic wave signals. The main body 21 is a strip-shaped body. The main body 21 has one end 22 extending at one end thereof. One end is provided with a projection 23 having a substantially semicircular arc shape. The width of the end portion 22 is slightly larger than the main body 21, the outer edge of the end portion 22 is flush with the main body 21, the inner edge is protruded from the main body 21, and a convex arc-shaped transition is adopted at the joint with the main body 21. The outer edge of the protruding portion 23 is substantially semi-circular in shape to fit other components of the wireless communication device and reduce the volume thereof. The central portion and the main portion of the projection 23 The body 21 is connected at one end, and adopts a concave curved smooth transition with the outer edge of the main body 21 to form a smooth curve with the outer edge of the main body 21. A second positioning hole 241 is defined in the first bending portion 24, and the second positioning hole 241 is configured to extend the other end of the protruding portion 23. The dual band antenna 100 is fixed in the wireless communication device.
該第二天線部20之主體21與第一天線部10之第三片體121相互平行,且於二者之間形成一狹長缺口50,調整該狹長缺口50之開口寬度可調整天線之性能,如天線頻率,從而使該雙頻天線100獲得較佳之通訊性能。 The main body 21 of the second antenna portion 20 and the third body 121 of the first antenna portion 10 are parallel to each other, and an elongated notch 50 is formed therebetween. The width of the opening of the narrow notch 50 can be adjusted to adjust the antenna. Performance, such as antenna frequency, allows the dual band antenna 100 to achieve better communication performance.
該饋入端30包括一大致為L形之板體31及設於板體31邊緣處之一第二彎折部32,該第二彎折部32包括一第一連接端321及一第五片體322,該第一連接部321垂直於板體31及第五片體322所在平面,並分別與板體31及第五片體322之末端相連,三者成為一體。該第五片體322與第一片體111及第四片體122均平行。 The feeding end 30 includes a substantially L-shaped plate body 31 and a second bending portion 32 disposed at an edge of the plate body 31. The second bending portion 32 includes a first connecting end 321 and a fifth portion. The first connecting portion 321 is perpendicular to the plane of the plate body 31 and the fifth body 322, and is respectively connected to the ends of the plate body 31 and the fifth body 322, and the three are integrated. The fifth sheet body 322 is parallel to both the first sheet body 111 and the fourth sheet body 122.
該接地端40包括一大致為T形之基體41,該基體41包括一條形之基板411及由該基板411之中間位置處水平凸伸出之一凸片412。該基板411之二端部分別設有一第二連接端42,該第二連接端42於基板411之二端部沿垂直於該基板411所在平面延伸彎折形成,以分別連接所述之第二天線部20及饋入端30。同時,該基板411於其內緣臨近饋入端30位置處設有一第三連接端43,該第三連接端43用以連接第一天線部10,由於該第三連接端43、第二連接端42之間具有一高度差,從而使第一天線部10與第二天線部20分別處於不同高度之平面。 The grounding end 40 includes a substantially T-shaped base body 41. The base body 41 includes a strip-shaped base plate 411 and a tab 412 projecting horizontally from an intermediate position of the base plate 411. The second end of the substrate 411 is respectively provided with a second connecting end 42. The second connecting end 42 is formed at two ends of the substrate 411 and extends along a plane perpendicular to the plane of the substrate 411 to respectively connect the second end. The antenna unit 20 and the feed end 30. At the same time, the substrate 411 is provided with a third connecting end 43 at a position adjacent to the feeding end 30 of the inner edge thereof. The third connecting end 43 is used for connecting the first antenna portion 10, because the third connecting end 43 and the second end There is a height difference between the connecting ends 42 such that the first antenna portion 10 and the second antenna portion 20 are respectively at planes of different heights.
上述接地端40及饋入端30分別與無線通訊裝置內部電路板(圖未 示)之接地面及訊號傳輸端連接,所述接地端40與饋入端30之間形成電流回路,從而使第一天線部10與第二天線部20構成一雙頻回路結構,使得本發明較佳實施方式雙頻天線100可用於兩個操作頻段。 The grounding terminal 40 and the feeding end 30 are respectively connected to the internal circuit board of the wireless communication device (not shown) The ground plane and the signal transmission end are connected, and a current loop is formed between the ground terminal 40 and the feed end 30, so that the first antenna portion 10 and the second antenna portion 20 form a dual-frequency loop structure, so that The preferred embodiment of the present invention dual frequency antenna 100 can be used in two operating frequency bands.
可以理解,所述之第一定位孔113及第二定位孔241不限於上述之數量及位置,只起到將所述雙頻天線100固定於該無線通訊裝置之作用即可。 It can be understood that the first positioning hole 113 and the second positioning hole 241 are not limited to the above-mentioned number and position, and only serve to fix the dual-frequency antenna 100 to the wireless communication device.
該雙頻天線100之第一天線部10及第二天線部20位於不同之平面,充分利用無線通訊裝置在不同高度之空間,有效地縮小了其佔用之體積,利於無線通訊裝置之小型化。同時,所述雙頻天線100第一天線部10及第二天線部20均位於接地端40之一側,並使低頻天線第一天線部10位於高頻天線第二天線部20內側,使容易受到干擾之低頻天線遠離外界電子元件,從而減少外界電子元件對雙頻天線100之整體干擾,提高雙頻天線100之輻射效率。 The first antenna portion 10 and the second antenna portion 20 of the dual-band antenna 100 are located on different planes, and fully utilize the space of the wireless communication device at different heights, thereby effectively reducing the occupied volume and facilitating the small size of the wireless communication device. Chemical. Meanwhile, the first antenna portion 10 and the second antenna portion 20 of the dual-band antenna 100 are both located on one side of the ground end 40, and the low-frequency antenna first antenna portion 10 is located at the second antenna portion 20 of the high-frequency antenna. On the inner side, the low frequency antenna that is easily interfered is kept away from the external electronic components, thereby reducing the overall interference of the external electronic components on the dual frequency antenna 100, and improving the radiation efficiency of the dual frequency antenna 100.
另外,本領域技術人員還可在本發明權利要求公開之範圍和精神內做其他形式和細節上之各種修改、添加和替換。當然,這些依據本發明精神所做之各種修改、添加和替換等變化,都應包含在本發明所要求保護之範圍之內。 In addition, various modifications, additions and substitutions in the form and details may be made by those skilled in the art in the scope and spirit of the invention. It is a matter of course that various modifications, additions and substitutions made in accordance with the spirit of the invention are intended to be included within the scope of the invention.
100‧‧‧雙頻天線 100‧‧‧Double frequency antenna
10‧‧‧第一天線部 10‧‧‧First antenna unit
11‧‧‧第一輻射體 11‧‧‧First radiator
111‧‧‧第一片體 111‧‧‧ first body
112‧‧‧第二片體 112‧‧‧Second body
1121‧‧‧短邊 1121‧‧‧ Short side
1122‧‧‧長邊 1122‧‧‧Longside
113‧‧‧第一定位孔 113‧‧‧First positioning hole
12‧‧‧第二輻射體 12‧‧‧Second radiator
121‧‧‧第三片體 121‧‧‧ third body
122‧‧‧第四片體 122‧‧‧Four piece
20‧‧‧第二天線部 20‧‧‧second antenna unit
21‧‧‧主體 21‧‧‧ Subject
22‧‧‧端部 22‧‧‧ End
23‧‧‧凸出部 23‧‧‧ protruding parts
24‧‧‧第一彎折部 24‧‧‧First bend
241‧‧‧第二定位孔 241‧‧‧Second positioning hole
30‧‧‧饋入端 30‧‧‧Feeding end
31‧‧‧板體 31‧‧‧ board
32‧‧‧第二彎折部 32‧‧‧Second bend
321‧‧‧第一連接端 321‧‧‧First connection
322‧‧‧第五片體 322‧‧‧5th body
40‧‧‧接地端 40‧‧‧ Grounding terminal
41‧‧‧基体 41‧‧‧ base
411‧‧‧基板 411‧‧‧Substrate
412‧‧‧凸片 412‧‧‧1 piece
42‧‧‧第二連接端 42‧‧‧second connection
43‧‧‧第三連接端 43‧‧‧ third connection
50‧‧‧狹長缺口 50‧‧‧Length gap
Claims (7)
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TWI466383B true TWI466383B (en) | 2014-12-21 |
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Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
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TWM288015U (en) * | 2005-08-26 | 2006-02-21 | Inventec Appliances Corp | Mobile phone antenna |
TWM326236U (en) * | 2007-07-24 | 2008-01-21 | Mobinnova Hong Kong Ltd | Multi-band inverted-F antenna, PIFA |
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Publication number | Priority date | Publication date | Assignee | Title |
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TWM288015U (en) * | 2005-08-26 | 2006-02-21 | Inventec Appliances Corp | Mobile phone antenna |
TWM326236U (en) * | 2007-07-24 | 2008-01-21 | Mobinnova Hong Kong Ltd | Multi-band inverted-F antenna, PIFA |
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