201037894 .六、發明說明： 【發明所屬之技術領域】 . 本發明涉及一種天線，尤其涉及一種超寬頻天線及應用該超寬頻 -天線之無線通訊裝置。 【先前技術】 隨著筆記本電腦、無線路由器等無線家庭網路設備之普及，無線 豕庭網路設備之間之資訊傳輸量亦不斷之增加，現階段已經有多種短 ❹距離無線通訊技術例如藍牙(Bluet00th)技術與IEEE8〇211/a/g協議 等，但這些先前技術之訊號傳輸功率較低，抗干擾能力一般較差，傳 輸速率會因障礙物而有所降低，而越來越無法滿足用戶對傳輸品質之 •要求。於此情形下’同樣主要用於短距離傳輸之超寬頻(UWB，Ultra Wide Band)通訊技術應運而生。超寬頻通訊系統利用發射低強度之窄 脈衝訊號而不是載波來實現高速度、高品質之傳輸，因此頻寬非常大， 抗干擾能力強，並具有可降低發射訊號功率以達到低功率、低耗電之 優點。由於超寬頻無線通訊之工作頻段一般至少需要涵蓋 ❹3.1GHz〜10.6GHz之頻段，因此就需要一種於3 1GRz〜1〇 6GHz頻段内 性能良好 【發明内容】 有鑒於此，有必要提供一種體積小，且可工作於31GHz〜1〇6GH 頻段之超寬頻天線。 另，還有必要提供-種應職超寬頻天線之無線通訊裝置。 ★ 一種超寬頻天線’其設置於—基板上，該基板包括—第一表面及 -第二表面’該超寬頻天線包括—储單元、二連接部、—微帶傳輸 線及-接地單元；該輻射單元包括二個分別設置於第一表面及第二表 4 201037894 ‘面之输體，·該微帶傳輸線設置於第—表面上，通過財 .設·第—絲上之輻賴鱗；該接地單元設置於第二表面上； =單元、二連接部、一微帶傳輸線及一接地單元；』==括 〇 m跑於第—表面及第二表面之輻射體；該微帶傳輸線設置於 ==ί! 一連接部與設置於第一表面上之輻射體相連； “早兀叹於—表面上，通過另一連接部與設置於第二表面上 •之输體相連，·該二輕射體於基板上之投影以連接部為軸對稱分佈。 士本發明之超寬頻天線直接設置於基板，體積小，佔用空間少·同 77別°又置於基板之第—表面與第二表面上之二輻射體麵合產 2允輸概果，可工胁3.1GHZ〜la6GHZ毅，滿足超寬頻通訊 技術之使用要求。 Q 【實施方式】 請參閱圖1及圖2 ’本發明之超寬頻天線1〇為一雙面印刷天線， 其佈設於騎電話、個人數㈣购_nal ㈤福，pDA)等無 發射、接收無嫩以收發無線電 該基板30大致為一矩形之印刷電路板，其包括一第一表面“及 一與該表面31相對之第二表面32。於本實施方式中，該基板3〇 之相對介電常數㈣妨吻permittivity)約為3 38、正切損耗常數㈣S tangent)約為0.0025，厚度約為0 06英寸。 5 201037894 二連接部12、一微帶傳輸 該超先頻天線10包括一轄射單元ϋ、 線13及接地單元14。 該輻射單元u包括分別設置於基板30之第—表面31與第二表面 32上之4射體1U。每—職射體m包括—矩形輻射部而及一 二角形輕射部1112。該三角形輻射部1112大致為―呈等腰三角形之片 體’其底邊與矩形輕射部U11相連。該二輕射體m祕板3〇上之 投影相對設置，其中，兩個三角形輻射部⑽投影之底邊相互平行， 頂角具有重合之_，從峨該郷職—近_狀雜。如此， 該輻射單元11分贼於第—表面31與第二表面32之二輻射體U1可 形成陣列效應，通過二輻射體nl耦合產生寬頻輻射效果。 該連接部12大致呈長條狀，其包括一主體121、一連接端122、 及一傳輸端123。該主體121大致為-矩形片體，其具二短邊1211。 該連接& 122及該傳輸端123均為矩形片體，分別從該主體121之二 短邊1211延伸形成，且二者之寬度均略小於該主體121。該超寬頻天 線10之二連接部12對稱佈設於基板3〇之第一表面31及第二表面％ ❹上，二連接部12於基板30上之投影重合。該二連接部12之連接端 122分別與兩個輻射體in之三角形輻射部1112重合之頂點處相連， 傳輸端123分別與該微帶傳輸線13及接地單元14相連，從而使該二 輻射體111於基板30上之投影以該連接部12為軸線轴對稱。 該微帶傳輸線13為一矩形片狀體，其設置於基板30之第一表面 31上，與傳輸端123相連，其用於傳輪能量，為獲得與饋電線匹配之 性能’其寬度尺寸應使得該微帶傳輸線13獲得50歐姆左右之特性阻 抗。 該接地單元14設置於基板30之第二表面32上’其包括一主接地 201037894 .部141、二第一辅接地部142及二 為一矩形片體，其包括二長邊1^二輔接地部143。該主接地部⑷ .142為一矩形片體。該 及二短邊搬。該第一辅接地部 -射單元11 -側之長邊則 地部142由該主接地部141靠近輕 為一半圓形片體。該二第二輔接^稱延伸而成。該第二輔接地部143 142。該第-142、第二^143分別設置於該第-輔接地部 接地部⑷一同圍設形成一孔^接地部143與微帶傳輸線13及主 調整該超寬頻天線10之低頻^ ’通過設定該孔槽15之尺寸即可 〇 1〇之電流分佈更加均勻。· 頻率，同時還可使該超寬頻天線 之Π圖、為本發明超寬頻天線1G較佳實關之模擬與測量 之财祕示Μ。㈣可知，該超寬頻天線職3·職〜膝他 ^又内符合於現有之無線通訊網路内進行超寬頻·傳輸之使用要 求0 -月參閱圖4、圖5及圖6’所示分別為經電磁模擬所得實施例中超 寬頻天線·Χ作於3.lGHz、10.18GHz、l〇.6GHz頻率之#射場方向圖， 〇由圖可知本實把方式之超寬頻天線符合於現有之無線通訊網路内進 行超寬頻資料傳輸之使用要求。 請參閱圖7，所示為超寬頻天線之增益示意圖，由圖可知，本實 施方式之超寬頻天線於3.1GHz〜10.6GHz頻段時，具有良好之增益平 坦度，具體值約為±3dB。 【圖式簡單說明】 圖1為本發明超寬頻天線較佳實施例設置於基板上之正面示意 圖。 圖2為本發明超寬頻天線較佳實施例設置於基板上之反面示意 7 201037894 •圖。 意圖 圖3為本發明超寬頻天線較佳實施例之模擬與測量之回波損耗 % 電201037894. VI. Description of the Invention: [Technical Field of the Invention] The present invention relates to an antenna, and more particularly to an ultra-wideband antenna and a wireless communication device using the ultra-wideband-antenna. [Prior Art] With the popularity of wireless home network devices such as notebook computers and wireless routers, the amount of information transmitted between wireless Internet devices has also increased. At this stage, there are various short-range wireless communication technologies such as Bluetooth. (Bluet00th) technology and IEEE8〇211/a/g protocol, etc., but these prior art signals have lower transmission power, generally have poor anti-interference ability, and the transmission rate will be reduced due to obstacles, and it is increasingly unable to satisfy users. Requirements for transmission quality. In this case, UWB (Ultra Wide Band) communication technology, which is also mainly used for short-distance transmission, came into being. The ultra-wideband communication system uses low-intensity narrow-pulse signals instead of carriers to achieve high-speed, high-quality transmission. Therefore, the bandwidth is very large, anti-interference ability is strong, and the transmission signal power can be reduced to achieve low power and low power consumption. The advantage of electricity. Since the working frequency band of ultra-wideband wireless communication generally needs to cover at least the frequency band of 3.1 GHz to 10.6 GHz, it is required to have a good performance in the frequency band of 3 1GRz~1 〇 6 GHz. [Inventive content] In view of this, it is necessary to provide a small size. And can work in the ultra-wideband antenna of the 31GHz~1〇6GH band. In addition, it is also necessary to provide a wireless communication device for an ultra-wideband antenna. An ultra-wideband antenna is disposed on a substrate, the substrate including a first surface and a second surface. The ultra-wideband antenna includes a storage unit, two connection portions, a microstrip transmission line, and a grounding unit. The unit comprises two transport bodies respectively disposed on the first surface and the second surface 4 201037894', wherein the microstrip transmission line is disposed on the first surface, and the ground scale is passed through the first and second wires; The unit is disposed on the second surface; = unit, two connecting portions, a microstrip transmission line and a grounding unit; 』== brackets m run on the first surface and the second surface of the radiator; the microstrip transmission line is set at = =ί! A connecting portion is connected to the radiator disposed on the first surface; "early sighing on the surface", connected to the body disposed on the second surface through another connecting portion, the two light shots The projection on the substrate is axially symmetrically distributed by the connecting portion. The ultra-wideband antenna of the invention is directly disposed on the substrate, has a small volume and takes up less space, and is placed on the first surface and the second surface of the substrate. The second radiative surface production 2 It can meet the requirements of ultra-wideband communication technology. Q [Embodiment] Please refer to FIG. 1 and FIG. 2 'The ultra-wideband antenna 1 of the present invention is a double-sided printed antenna, which is disposed on Ride the phone, personal number (4) purchase _nal (five), pDA), etc. without transmitting, receiving no tender to send and receive radio. The substrate 30 is substantially a rectangular printed circuit board comprising a first surface "and a surface opposite the surface 31 The second surface 32. In the present embodiment, the relative dielectric constant (four) of the substrate 3 约为 is about 3 38, the tangent loss constant (four) S tangent) is about 0.0025, and the thickness is about 0 06 inches. 5 201037894 Two connection unit 12, a microstrip transmission The super-priority antenna 10 includes a aligning unit ϋ, a line 13 and a grounding unit 14. The radiating element u includes four emitters 1U respectively disposed on the first surface 31 and the second surface 32 of the substrate 30. Each of the shots m includes a rectangular radiating portion and a diplexed light portion 1112. The triangular radiating portion 1112 is substantially a "plate of an isosceles triangle" whose bottom side is connected to the rectangular light-emitting portion U11. The projections of the two light body m secret plates are oppositely arranged, wherein the bottom edges of the projections of the two triangular radiation portions (10) are parallel to each other, and the apex angles have coincident _, from the 郷 郷 近 近 近 近 近 近 近. In this way, the radiating element 11 can form an array effect on the first surface 31 and the second surface 32 of the second radiator 32, and the broadband radiation effect can be generated by coupling the two radiators n1. The connecting portion 12 is substantially elongated and includes a main body 121, a connecting end 122, and a transmitting end 123. The body 121 is generally a rectangular piece having two short sides 1211. The connection & 122 and the transmission end 123 are rectangular sheets respectively extending from the short sides 1211 of the main body 121, and both have a width slightly smaller than the main body 121. The connecting portions 12 of the ultra-wideband antennas 10 are symmetrically disposed on the first surface 31 and the second surface ❹ of the substrate 3, and the projections of the two connecting portions 12 on the substrate 30 are coincident. The connecting ends 122 of the two connecting portions 12 are respectively connected to the vertices of the triangular radiating portions 1112 of the two radiators in series, and the transmitting ends 123 are respectively connected to the microstrip transmission line 13 and the grounding unit 14, so that the two radiators 111 are respectively The projection on the substrate 30 is axisymmetric with respect to the connecting portion 12 as an axis. The microstrip transmission line 13 is a rectangular sheet-like body disposed on the first surface 31 of the substrate 30 and connected to the transmission end 123 for transmitting the energy of the wheel. To obtain the performance matching with the feeder, the width dimension thereof should be The microstrip transmission line 13 is made to obtain a characteristic impedance of about 50 ohms. The grounding unit 14 is disposed on the second surface 32 of the substrate 30. The main grounding unit includes a main ground 201037894. The portion 141, the second auxiliary grounding portion 142, and the second portion are rectangular pieces. Part 143. The main grounding portion (4) .142 is a rectangular piece. The two and the short side move. The long side of the first auxiliary ground portion-projection unit 11 - side portion 142 is closer to the light-half circular sheet body by the main ground portion 141. The second auxiliary device is extended. The second auxiliary ground portion 143 142. The first 142 and the second 143 are respectively disposed on the ground portion (4) of the first auxiliary ground portion to form a hole 143 and the microstrip transmission line 13 and the low frequency of the ultra-wideband antenna 10 are set. The size of the aperture 15 is such that the current distribution of the aperture is more uniform. · Frequency, at the same time, the map of the ultra-wideband antenna can be used as the financial simulation of the simulation and measurement of the ultra-wideband antenna 1G of the present invention. (4) It can be seen that the ultra-wideband antenna is in the position of 3, and it is in compliance with the requirements of ultra-wideband transmission in the existing wireless communication network. 0 - month is shown in Figure 4, Figure 5 and Figure 6' respectively. The ultra-wideband antenna in the example obtained by electromagnetic simulation is used in the #130 GHz, 10.18 GHz, and l〇.6 GHz frequency field, and the ultra-wideband antenna of the actual mode is compatible with the existing wireless communication network. The use of ultra-wideband data transmission is required. Referring to FIG. 7, a schematic diagram of the gain of the ultra-wideband antenna is shown. As can be seen from the figure, the ultra-wideband antenna of the present embodiment has a good gain flatness in the 3.1 GHz to 10.6 GHz frequency band, and the specific value is about ±3 dB. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a front elevational view showing a preferred embodiment of an ultra-wideband antenna of the present invention disposed on a substrate. 2 is a schematic illustration of a reverse side of a preferred embodiment of an ultra-wideband antenna of the present invention disposed on a substrate. Intent 3 is a simulation and measurement return loss of a preferred embodiment of the ultra-wideband antenna of the present invention.
圖4為本發明超寬頻天線較佳實施例工作於3 65GHz 磁輻射場圖。 I 圖5為本發明超寬頻天線較佳實施例工作於i〇.i8GHz 電磁輻射場圖。 ® 6為本發明超寬頻天線較佳實施例工作於10.6GHz頻率時之電 磁輻射場圖。 圖7為本發明超寬頻天線較佳實施例之增益示意圖。 第一表面 31 超寬頻天線 10 輻射體 111 三角形輻射部 1112 主體 121 連接端 122 微帶傳輸線 13 主接地部 141 短邊 1412 第二輔接地部 143 【主要元件符號說明】 基板 30 第二表面 32 輻射單元 11 矩形輕射部 1111 連接部 12 1211 傳輸端 123 接地單元 14 長邊 1411 第一輔接地部 142 孔槽 154 is a diagram showing the magnetic radiation field of the 3 65 GHz preferred embodiment of the ultra-wideband antenna of the present invention. I Fig. 5 is a diagram showing a preferred embodiment of the ultra-wideband antenna of the present invention operating on an electromagnetic radiation field of i. ® 6 is a diagram of the electromagnetic radiation field of the preferred embodiment of the ultra-wideband antenna of the present invention operating at 10.6 GHz. 7 is a schematic diagram of the gain of a preferred embodiment of the ultra-wideband antenna of the present invention. First surface 31 Ultra-wideband antenna 10 Radiator 111 Triangular radiating portion 1112 Main body 121 Connecting end 122 Microstrip transmission line 13 Main grounding portion 141 Short side 1412 Second auxiliary grounding portion 143 [Main component symbol description] Substrate 30 Second surface 32 Radiation Unit 11 Rectangular light-emitting portion 1111 Connection portion 12 1211 Transmission end 123 Grounding unit 14 Long side 1411 First auxiliary ground portion 142 Hole groove 15