200931724 九、發明說明： 【發明所屬之技術領域】 . 本發明係一種適用於無線應用之寬頻印刷偶極天 •線，，特別指其輕射部係為兩特定形狀，如：菱形、矩形、 環形#圓形或方形之金屬#，且於饋入部兩侧對稱設 有兩調控金屬片作為頻寬調控部，用以來調整阻抗匹 配，形成一應用於WIMAX規格的寬頻偶極天線者。 G【先前技術】 現今WIMAX/WLAN的雙頻或三頻偶極天線，已有相當 多業者及研究單位投入研究，有如：（1)中華民國專利 、公告號第1283945號之「雙頻雙偶極天線」、（2)中華 民國專利公開號第200727533號之「平面偶極天線」、 • (3)中華民國專利公開號第2〇〇7〇1556號之「雙頻偶極 天線」、（4)中華民國專利公開號第200719532號「偶 〇極天線」、（5)英國專利申請號第0518996.4號之 「Balanced antenna devices」及（6)美國專利申請號 第 10/641,913 號之「 Multi-band printed dipole antenna」等專利發表。 然，前述之（1)、（2)、（3)專利案，係以較複 v雜之構造達成其功能性，重量較重成本亦較高，且較不 -易射頻電路系統做整合，本發明是印刷式結構，具有重 量輕、低姿態（low prof i le)、低成本及容易與射頻電 路系統做整合等優點。而（4 )、（ 5 )、（ 6 )號專利案 5 200931724 僅此單純以寬頻或雙頻天線操作。 【發明内容】 > 爰此，基於習知天線之種種缺失，本發明係提供一 •種適用於無線應用之寬頻印刷偶極天線，以單一饋入線 和特定形狀金屬片來達到2.13〜2.88GHz的單頻共振模 態，再來以仏號源和接地面的饋入線旁加入對稱的調控 金屬片做其與信號間產生耦合效應，其可用來調整阻抗 Q匹配，接著在此調控金屬片中加入L型槽縫，使寬頻操 作的天線之中頻帶阻抗匹配，最後可達成所需的雙頻操 作其可涵蓋WLAN之2. 4〜2. 48GHz和5· 15〜5. 825GHz頻 帶。 . 本發明係一種適用於無線應用之寬頻印刷偶極天 線’係於基板上形成有： ^ 輻射部，係包括平行間隔排列之第一菱形金屬片及 第二菱形金屬片，而於第一菱形金屬片及第二菱形金屬 ❹片具有相對靠近之相臨端與相對遠離之遠離端·， 饋入邛，具有相對之上、下侧，係包括第一直線段 及第二直線段，該第一直線段係由第一菱形金屬片之相 臨端朝第一菱形金屬片延伸，第二直線段係由第二菱形 金屬片之相臨端朝第一菱形金屬片延伸，而於第一直線 '段與第二直線段間有一間隔； 頻寬調控部，係包括第一調控金屬片及第二調控金 屬片，係對稱分設於饋入部之上側及下側，該第一調控 金屬片及第二調控金屬片係區分有：靠近第一菱形金屬 200931724 才臨端之第一侧、與饋入部相臨之第二側、與第一侧 相對之第三側及第四侧。 、 、 本發明係一種適用於無線應用之寬頻印刷偶極天 •線’係於基板上形成有： 輻射部，係包括平行間隔排列之第一矩形金屬片及 第二矩形金屬片’而於第一矩形金屬片及第二矩形金屬 片具有相對靠近之相臨端與相對遠離之遠離端； ❹ 饋入部，具有相對之上、下侧，係包括第一直線段 及第二直線段，該第一直線段係由第一矩形金屬片之相 臨端朝第二矩形金屬片延伸’第二直線段係由第二矩形 金屬片之相臨端朝第一矩形金屬片延伸，而於第一直線 •段與第二直線段間有一間隔； . 頻寬調控部，係包括第一調控金屬片及第二調控金 屬片，係對稱分設於饋入部之上侧及下侧，該第一調控 金屬片及第二調控金屬片係區分有：靠近第一矩形金屬 〇片相臨端之第一侧、與饋入部相臨之第二側、與第一侧 相對之第三側及第四側。 本發明係一種適用於無線應用之寬頻印刷偶極天 線’係於基板上形成有： , 輻射部，係包括平行間隔排列之第一矩形金屬片及 第一矩形金屬片，而於第一矩形金屬片及第二矩形金屬 片具有相對靠近之相臨端與相對遠離之遠離端； 饋入部，具有相對之上、下側，係包括第一直線段 及第二直線段，該第一直線段係由第一矩形金屬片之相 7 200931724 臨端朝第二矩形金屬片延伸，第二直線段係由第二矩來 金屬片之相臨端朝第—矩形金屬片延伸，而線 段與第二直線段間有一間隔; 直線 頻寬調控部，係包括第一調控金屬片及第二調控金 屬片，係對稱分設於饋入部之上側及下側，該第一調控 金屬片及第二調控金屬片係區分有··靠近第一矩形金屬 Ο Ο 片之第一側、與饋入部相臨之第二侧、與第一側 相對之第三側及第四侧。 本發明係一種適用於無線應用之寬頻印刷偶極天 線，係於基板上形成有： 輻射部’係包括平行間隔排列之第—環形金屬片及 形金屬片，而於第-環形金屬片及第二環形金屬 、相對靠近之相臨端與相對遠離之遠離端； 饋入部，具有相對之上、下侧，係包括第一直線段 臨被線段’該第-直線段係由第—環形金屬片之相 令 一環形金屬片延伸，第二直線段係由第二環形 於由t之相臨端朝第一環形金屬片延伸，而於第一直線 又、一直線段間有一間隔； 頻寬調控部，係包括第一調控金屬片及第二調控金 金屬係對稱分設於饋入部之上侧及下側，該第一調控 片及第二調控金屬片係區分有：靠近第一環形金 月相臨端> # ,, 相料 之第一側、與饋入部相臨之第二側、與第一侧 之第二側及第四侧。 本發明係一種適用於無線應用之寬頻印刷偶極天 8 200931724 線’係於基板上形成有： s射。f5,係包括平行間 一 i及第二橢圓形金屬片，而於第」橢n圓=屬片 .圓形金屬片具有相對靠近之相雄端與相對屬遠片摘 端； ，六彳日耵遢離之遠離200931724 IX. Description of the invention: [Technical field to which the invention pertains] The present invention is a wide-band printing dipole antenna for wireless applications, in particular, the light-emitting portion is of two specific shapes, such as a diamond shape, a rectangle, Ring #圆 or square metal#, and two regulating metal sheets are symmetrically arranged on both sides of the feeding portion as the bandwidth control portion, and the impedance matching is adjusted to form a wide-band dipole antenna for WIMAX specifications. G [Prior Art] Today's WIMAX/WLAN dual- or triple-frequency dipole antennas have been put into research by many companies and research institutes, such as: (1) Republic of China patent, Bulletin No. 1283945 "Double-frequency dual-couple "Polar antenna", (2) "Flat Dipole Antenna" of the Republic of China Patent Publication No. 200727533, and (3) "Double Frequency Dipole Antenna" of the Republic of China Patent Publication No. 2〇7〇1556, ( 4) Republic of China Patent Publication No. 200719532 "Early Dice Antenna", (5) British Patent Application No. 0518996.4 "Balanced antenna devices" and (6) US Patent Application No. 10/641,913 "Multi- Band printed dipole antenna" and other patents were published. However, the aforementioned (1), (2), and (3) patents achieve their functionality by a relatively complex structure, which is relatively heavy in weight and relatively inexpensive, and is less integrated with RF circuits. The invention is a printed structure, and has the advantages of light weight, low profile, low cost and easy integration with radio frequency circuit systems. The patents (4), (5), and (6) 5 200931724 are only operated by broadband or dual-frequency antennas. SUMMARY OF THE INVENTION Accordingly, the present invention provides a broadband printed dipole antenna suitable for wireless applications based on a variety of conventional antennas, with a single feed line and a specific shape of metal sheet to achieve 2.13 to 2.88 GHz. The single-frequency resonant mode, in addition to the symmetrical source and the ground plane of the feed line to add a symmetric control metal sheet to create a coupling effect with the signal, which can be used to adjust the impedance Q matching, and then in the control metal sheet Adding an L-shaped slot to match the frequency band impedance of the broadband-operated antenna, and finally achieving the required dual-frequency operation, which can cover the WLAN of 2. 4~2. 48GHz and 5·15~5. 825GHz band. The invention is a wide-band printed dipole antenna suitable for wireless applications. The system is formed on the substrate with: a radiation portion comprising a first diamond-shaped metal piece and a second diamond-shaped metal piece arranged in parallel, and in the first diamond shape. The metal piece and the second diamond-shaped metal cymbal have relatively close adjacent ends and relatively far away ends, and the feeding cymbal has opposite upper and lower sides, and includes a first straight line segment and a second straight line segment, the first straight line The segment extends from the adjacent end of the first diamond-shaped metal piece toward the first diamond-shaped metal piece, and the second straight line segment extends from the adjacent end of the second diamond-shaped metal piece toward the first diamond-shaped metal piece, and in the first straight line segment The second straight line segment has an interval; the bandwidth control portion includes a first regulating metal piece and a second regulating metal piece, and is symmetrically disposed on the upper side and the lower side of the feeding portion, the first regulating metal piece and the second regulating The metal sheet is distinguished by a first side adjacent to the first rhombic metal 200931724, a second side adjacent to the feed portion, and a third side and a fourth side opposite the first side. The present invention is a wide-band printing dipole antenna for a wireless application. The line is formed on the substrate: a radiation portion including a first rectangular metal piece and a second rectangular metal piece arranged in parallel intervals. a rectangular metal piece and a second rectangular metal piece have opposite ends and a relatively distant distal end; 馈 a feeding portion having a relatively upper side and a lower side, comprising a first straight line segment and a second straight line segment, the first straight line The segment extends from the adjacent end of the first rectangular metal piece toward the second rectangular metal piece. The second straight line segment extends from the adjacent end of the second rectangular metal piece toward the first rectangular metal piece, and in the first straight line segment The second straight line segment has an interval; the bandwidth control portion includes a first regulating metal piece and a second regulating metal piece, and is symmetrically disposed on the upper side and the lower side of the feeding portion, the first regulating metal piece and the first The second regulating metal sheet is divided into a first side adjacent to the adjacent end of the first rectangular metal gusset, a second side adjacent to the feeding portion, and a third side and a fourth side opposite to the first side. The present invention is a broadband printed dipole antenna suitable for wireless applications. The system is formed on the substrate: a radiating portion comprising a first rectangular metal piece and a first rectangular metal piece arranged in parallel, and the first rectangular metal And the second rectangular metal piece has a relatively close adjacent end and a relatively distant distal end; the feeding portion has a relatively upper side and a lower side, and includes a first straight line segment and a second straight line segment, wherein the first straight line segment is A rectangular metal piece phase 7 200931724 extends toward the second rectangular metal piece, and the second straight line segment extends from the second end of the metal piece toward the first rectangular metal piece, and between the line segment and the second straight line segment The linear control unit includes a first regulating metal piece and a second regulating metal piece, and is symmetrically disposed on the upper side and the lower side of the feeding portion, and the first regulating metal piece and the second regulating metal piece are distinguished. There is a first side adjacent to the first rectangular metal Ο sheet, a second side adjacent to the feeding portion, and a third side and a fourth side opposite to the first side. The invention relates to a broadband printed dipole antenna suitable for wireless applications, which is formed on a substrate: a radiating portion includes a first annular metal sheet and a metal sheet arranged in parallel, and the first annular metal sheet and the first a second annular metal, a relatively close adjacent end and a relatively distant distal end; the feeding portion having a relatively upper side and a lower side, comprising a first straight line segment adjacent to the line segment 'the first straight line segment is a first annular metal piece Aligning an annular metal piece, the second straight line segment is extended from the second end to the first annular metal piece by the second end, and has a space between the first straight line and the straight line segment; the bandwidth control portion, The first regulating metal piece and the second regulating metal metal are symmetrically disposed on the upper side and the lower side of the feeding portion, and the first regulating piece and the second regulating metal piece are distinguished from each other by: close to the first annular gold phase The first side of the material, the second side adjacent to the feeding portion, and the second side and the fourth side of the first side. The invention is a wide-band printing dipole day 8 200931724 line suitable for wireless applications. The line is formed on the substrate: s-shoot. F5, comprising a parallel inter-i and a second elliptical metal piece, and in the eleventh ellipse n-ring = genus piece. The circular metal piece has a relatively close male end and a relative distal end; Stay away from it
G Ο 及第二饋直入二，具有相對之上、下侧，係包括第-直線段 相臨端朝g ’該第一直線段係由第一橢圓形金屬片之 橢圓妒金】一橢圓形金屬片延伸，第二直線段係由第二 π屬片之相臨端朝第一擔圓形金屬 第-直線段與第二直線段时H 而於 頻寬：控部，係包括第一調控金屬片及第二調控金 =片=設於饋入部之上侧及下側，該第-調控 相臨：一調控金屬片係區分有：靠近第-橢圓形金 屬片相臨端之第一側、與饋入部相臨之第二側、與 侧相對之第三側及第四侧。 、 本發明係一種適用於無線應用之寬頻 線，係於基板上形成有： 輻射部，係包括平行間隔排列之第一方形金屬片及 第二方形金屬片，而於第一方形金屬片及第二方形金屬 片具有相對靠近之相臨端與相對遠離之遠離端； 饋入部，具有相對之上、下側，係包括第一直線段 及第二直線段，該第一直線段係由第一方形金屬片之相 臨端朝第二方形金屬片延伸，第二直線段係由第二方形 金屬片之相臨端朝第一方形金屬片延伸，而於第一直線 9 200931724 段與第二直線段間有一間隔； 頻寬調控部，係包括第一調控金屬片及第二調控金 -屬片係對稱分設於饋入部之上侧及下側，該第一調控 金屬片及第二調控金屬片係區分有：靠近第一方形金屬 片相臨端之第一側、與饋入部相臨之第二侧、與第一側 相對之第三侧及第四侧。 上述之適用於無線應用之寬頻印刷偶極天線，該頻 ❹寬調控部係分別於第一調控金屬片及第二調控金屬片上 設有第一帶拒及第二帶拒。 上述之適用於無線應用之寬頻印刷偶極天線，該第 帶拒與第二帶拒係以反對稱方式設置。 上述之適用於無線應用之寬頻印刷偶極天線，該第 .一帶拒係設於第一矩形金屬片，係自其第一側開口，朝 第三侧方向延伸有一 L型槽縫，其閉口朝第四侧方向設 置，該第二帶拒係設於第二矩形金屬片，自其第三侧開 〇 口，朝第一側方向延伸有另一L·型槽縫，其閉口朝第四 側方向設置。 上述之適用於無線應用之寬頻印刷偶極天線，係印 製在一相對介電常數為ε r=4.4，損耗正切（1〇ss tangent)為 〇. 0245 之 FR4 板上。 上述之用於無線應用之寬頻印刷偶極天線，該饋入 •部饋入之微帶線係5〇歐姆。 上述之用於無線應用之寬頻印刷偶極天線，該第 一調控金屬片及第二調控金屬片係矩形。 200931724 本發明之優點如下： 1. 本發明應用於WIMAX規格的寬頻偶極天線體積 僅有41x15x0. 8mm3 ，而印刷天線具有低姿勢、質量輕、 製造容易等優點’由於其構造簡單故成本較低廉。 2. 本發明的雙頻操作可涵蓋WLAN之2. 4〜2.48GHz 和5· 15〜5· 825GHz頻帶’有著良好的輻射特性和全向向 同性的輻射場輻圖且容易與射頻電路系統做整合。 3. 本發明之天線可任意設計成為寬頻或雙頻操 作，而當雙頻操作時更可為電路設計上省下濾波器的成 本，而且此設計只需使用單一反對稱的槽縫造成抑制頻 帶出現’調整槽縫的長度可任意使兩個抑制頻帶往高頻 或低頻移動。 '【實施方式】 首先，如第一圖所示，係為一平面式矩形偶極天 〇線’係於相對介電常數為er=4.4,損耗正切（1〇% tangent)為 〇.0245，厚度為 〇· 8mm 及面積為 41mm X 15 mm的FR4之基板（A)上形成有對稱的矩型馈入線（b)， 如第二圖所示，係改變矩型饋入線（B)其長度L 與寬度W觀察其返射損失的變化，係固定此矩型饋入線 (B)長度L，發現當其寬度w小於i〇mm時，有著雙頻 、操作的特性，低頻部份為對稱的左右臂的長度也約為四 分之一波長共振，也是總長的二分之一波長共振，而高 頻與低頻的頻率比約為3倍左右。 11 200931724 再來’如第三圖所示，係固定矩型饋人線（β)的 調整長度，當矩型饋入線⑴的長度愈長，波的 長度愈長，操作頻率即愈低。 又在此平面式矩形偶極天線中，因其兩個頻帶皆屬 於窄頻’本發明所欲設計的WiMAX屬於三頻操作或是涵 蓋三頻之寬頻操作，故如第四圖所示，在平面式矩形偶 極天線加入頻寬調控部（C)來達到此需求，該頻寬調控 Ο 部（C)，係包括形狀為矩形之第一調控金屬“⑴及 第-調控金屬片（C2) ’係對稱分設於矩型饋人線（B) 之上侧及下侧。 如第五圖所示，係將前述加入頻寬調控部（C)之 •平面式矩形偶極天線，其矩型饋入線（B)長寬固定為： •寬為2mm，長為l9.5fflm，再來調整第一調控金屬月（（：1) 及第二調控金屬片（C2)的寬度並固定長度，由第五圖 〇 ΊΓ知，調整寬度影響尚頻頻帶的匹配，對低頻不會有影 響，原因是此時頻寬調控部（c)所產生的模態與原始雙 頻的同頻部份結合成新的模態，故此時對低頻不會有影 在第六圖中，係固定前述天線之第一調控金屬片 (C1)及第二調控金屬片（C2)之寬度w並調整長度[ 觀察其對阻抗匹配的影響，可發現在矩形長度L小於 15mm時，新產生的模態會與原始高頻模態結合成新的高 12 200931724 頻模態，在長度L等於15mm時，此時天線呈現三頻操作； 在大於15mm時，此由頻寬調控部（C)產生的模態會與 •原始模態結合成新的低頻模態，這此現象對於天線設計 .上有很大的幫助。故下述之實施例係嘗試各種不同的形 狀之輻射部主體來達到符合WiMAX規格的頻帶操作。 第七圖係為一單頻偶極天線之結構，係於相對介電 常數為 ε r=4. 4，損耗正切（loss tangent)為 〇. 0245， 〇 厚度為〇. 8mm及面積為41mm xl5 mm的FR4之基板（1) 上形成有： 輻射部（2)，印製於基板（1)上，係包括平行間 隔排列之第一菱形金屬片（21)及第二菱形金屬片（22)， *而於第一菱形金屬片（21)及第二菱形金屬片（22)具 •有相對靠近之相臨端與相對遠離之遠離端。 饋入部（3 )’具有相對之上、下侧，係包括第一 直線段（31)及第二直線段（32)，該第一直線段（31) 係由第一菱形金屬片（21)之相臨端朝第二菱形金屬片 (22)延伸，第二直線段（32)係由第二菱形金屬片（22) 之相臨端朝第一菱形金屬片（21)延伸，而於第一直線 段（31)及第二直線段（32)間留有一間隙，饋入部（3) •饋入50歐姆的訊號饋入線，寬度為2mm。 . 第八圖為此單頻菱形偶極天線之返射損失圖，在實 作和模擬上可得到很好驗證，其頻段涵蓋 2.13〜2.880112，第九圖（3)〜（1))分別為操作^率在 200931724 2. 5GH時’ Χ-Z平面和Χ-Υ平面上的主極化和交差極化遠 場輻射場形實驗量測結果，第十圖為此天線之增益對頻 率變化量’在此頻段中最高增益4. 51dBi發生在2.6GHz。 如第十一圖所示，係為本發明之第一實施例，係在 前述之天線結構上設置一頻寬調控部（4 )，係包括第一 調控金屬片（41)及第二調控金屬片（42)，其形狀為 矩形’係對稱分設於饋入部（3 )之上側及下侧，該第一 ❹調控金屬片（41)及第二調控金屬片（42)係區分有： 靠近第一菱形金屬片（21)相臨端之第一侧、與饋入部 (3 )相臨之第二侧、與第一侧相對之第三側及第四侧， 而該第一調控金屬片（41)及第二調控金屬片（42)經 .由調整長度和寬度，可有效的增加阻抗頻寬，經最佳化 尺寸後，s史寬度為6mm、長度為13nun，而與饋入部（3) 之間距皆為0.5mm，至此寬頻操作之WiMAX偶極天線已 成功設計出。 〇 第十二圖係為本第一實施例之返回損失（return loss)圖，其中實線代表實驗量測的結果，此操作頻段 (2. 34〜6GHz)是符合WIMAX技術之操作頻段，經最佳化 後，從返回損失return l〇ss大於7. 5dB來看，可產生 2· 34〜6GHz以上的寬頻操作，其頻帶涵蓋ψίΜΑχ之三頻 '操作頻帶。 第十二、十四及十五圖分別為操作頻率在2. 5GHz、 3. 6GHz和5. 5GHz時，χ_ζ平面和χ_γ平面上的主極化和 交差極化遠場輻射場形實驗量測結果，且從這些輻射場 200931724 形的結果顯示本第-實施例所述天線具有不錯的主極化 輻射，且為常用的垂向輻射（br〇adside radi^i⑽）。 第十圖為此天線增益圖，由圖可知三個頻段的天 線分別的最大增益值分別為4 81 , 3.61及4 7ldBi，除 了滿足WiMAX系統高增益的需求，並且有更小更輕薄的 體積。 第十七圖為本發明之第二實施例，前述第一實施例 ❹之天線’其頻寬調控部（4 )上設有帶拒部（5 ),係於 第一調控金屬片（41)及第二調控金屬片（42)上設有 第一帶拒（51)及第二帶拒（52)，第一帶拒（51)與 第二帶拒（52)係以反對稱方式設置，第一帶拒（51 ) 係設於第一調控金屬片（41)，係自其第一側開口，朝 第三侧方向延伸有一 L型槽縫，其閉口朝第四侧方向設 置’該第二帶拒（52)係設於第二調控金屬片（42)， 自其第三侧開口，朝第一側方向延伸有另一 L型槽縫， 〇其閉口朝第四侧方向設置，此做法可在中頻部份即Wlan 所不須要的頻段，將此段阻抗調至不匹配，此於第十八 圖之實作和模擬的返射損失圖，得到證實且具有有相當 的吻合度。 第十九、二十圖分別為操作頻率在2 5GHz和 5· 5GHz時，X-Z平面和X-Y平面上的主極化和交差極化 遠場輻射場形實驗量測結果，證實本第二實施例有著良 好的輻射特性及全向向同性的輕射場輻圖。 第二十一圖（a)和（b)為本第二實施例在兩個頻 15 200931724 段的天線增益變化量，證實本第二實施例最後可達成所 需的雙頻操作其可其涵蓋WLAN之2. 4〜2. 48GHz和 5·15〜5*825GHz頻帶’而當雙頻操作時更可為電路設計 上省下濾波器的成本，而且此設計只需使用單一反對稱 的槽縫造成抑制頻帶出現，調整槽缝的長度可任意使兩 個抑制頻帶往高頻或低頻移動。 第十一圖為本發明之第三實施例，為一種適用於 無線應用之寬頻印刷偶極天線，與第一實施例不同之處 在於本第二實施例係在其輻射部（2a )，該輻射部（2a ) 係包括平行間隔排列之第一環形金屬片（21a)及第二環 形金屬片（22a) ’而於第一環形金屬片（21a)及第二 .環幵v金屬片（22a)具有相對靠近之相臨端與相對遠離之 遠離端，而圖中之R1係為第一環形金屬片（21a)及第 一環形金屬片（22a)之外徑，R2為其内徑。 如第二十三圖所示’係固定本第三實施例之R1參 ❹數，此參數若愈長，此寬頻操作的起始頻率將會愈低， 故調整R2參數，當R2愈大，高頻的截止頻率愈高，愈 符合本發明所需要的頻段。 第二十四圖係本發明之第四實施例，為一種適用於 無線應用之寬頻印刷偶極天線，與第一實施例不同之處 在於本第四實施例係在其輻射部（2b)，該輻射部（2b) 係包括平行間隔排列之第一橢圓形金屬片（21b)及第二 橢圓金屬片（22b)，而於第一橢圓形金屬片（21b)及 第一橢圓形金屬片（22b)具有相對靠近之相臨端與相對 200931724 遠離之遠離端，而圖中之S1係為第一橢圓形金屬片 (21b)及第二橢圓形金屬片（22b)之長轴，S2為其短 轴。 • 由第二十五圖可知’當橢圓參數S2之長度大於2mm 時’可得到良好的寬頻操作特性。 第二十六圖係本發明之第五實施例，為一種適用於 無線應用之寬頻印刷偶極天線，與第一實施例不同之處 ❹在於本第五實施例係在其輻射部（2c)，該輻射部（2幻 係包括平行間隔排列之第一矩形金屬片（21c)及第二矩 形金屬片（22c )，該輻射部亦可為平行間隔排列之第一 方形金屬片（圖中未示）及第二方形金屬片（圖中未示）。 至此’由以上實施例可發現’我們可將此本發明之 適用於無線應用之寬頻印刷偶極天線，其設計方法延伸 .至各種不同類形的架構，在設計上有很大的幫助，且本 發明各實施例應用於WIMAX規格的寬頻偶極天線體積僅 ❹有41x15x0. 8mm3 ，而印刷天線具有低姿勢、質量輕、 製造容易等優點’由於其構造簡單故成本較低廉，且本 發月之天線可任意設計成為寬頻或雙頻操作，而當雙頻 操作時更可為電路設計上省下濾波器的成本’而且此設 ‘十八需使用單一反對稱的槽縫造成抑制頻帶出現，調整 槽，的長度可任意使兩個抑制頻帶往高頻或低頻移動雙 頻操作可涵蓋WLAN之2. 4〜2. 48GHz和5· 15〜5. 825GHz 頻帶有著良好的輻射特性和全向向同性的輻射場輻圖 且容易與射頻電路系統做整合。 17 200931724 【圖式簡單說明】 第一圖係為一平面式矩形偶極天線結構圖。 第一圖係為平面式矩形偶極天線改變矩形矩塑饋入線之 .寬度時之返射損失的變化圖。 第二圖係為平面式矩形偶極天線改變矩形矩型饋入線之 長度時之返射損失的變化圖。 第四圖係為含有頻寬調控部之平面式矩形偶極天線之構 造圖。G Ο and the second feed straight into the second, having a relatively upper side and a lower side, including the first straight line segment facing the end of the first straight line segment by the elliptical sheet metal of the first elliptical metal sheet] an elliptical metal sheet extending The second straight line segment is formed by the adjacent end of the second π-plate toward the first circular metal-linear segment and the second straight segment, and is in the bandwidth: the control portion includes the first regulating metal piece and The second regulation gold=sheet= is disposed on the upper side and the lower side of the feeding portion, and the first regulation is adjacent: a regulating metal sheet is distinguished from: the first side adjacent to the adjacent end of the first elliptical metal piece, and the feeding The second side of the entrance is adjacent to the third side and the fourth side opposite to the side. The invention relates to a broadband line suitable for wireless applications, which is formed on a substrate: a radiation portion comprising a first square metal piece and a second square metal piece arranged in parallel, and the first square metal piece And the second square metal piece has a relatively close adjacent end and a relatively far away end; the feeding portion has an upper upper side and a lower side, and includes a first straight line segment and a second straight line segment, wherein the first straight line segment is first The opposite end of the square metal piece extends toward the second square metal piece, and the second straight line segment extends from the adjacent end of the second square metal piece toward the first square metal piece, and the first straight line 9 200931724 and the second straight line An interval between the straight line segments; the bandwidth control portion includes a first regulating metal piece and a second regulating gold-based film system symmetrically disposed on the upper side and the lower side of the feeding portion, the first regulating metal piece and the second regulating The metal sheet is divided into a first side adjacent to the adjacent end of the first square metal piece, a second side adjacent to the feeding portion, and a third side and a fourth side opposite to the first side. The above-mentioned wide-band printed dipole antenna suitable for wireless applications, wherein the frequency-width control unit is provided with a first strip rejection and a second strip rejection on the first regulating metal sheet and the second regulating metal sheet, respectively. The wideband printed dipole antenna described above is suitable for wireless applications, and the first band rejection and the second rejection are set in an antisymmetric manner. The above-mentioned wide-band printed dipole antenna suitable for wireless applications, the first tape is disposed on the first rectangular metal piece, and is open from the first side thereof, and has an L-shaped slot extending toward the third side, and the closed port is closed The second side is disposed in the second rectangular metal piece, and the opening is opened from the third side thereof, and another L·-shaped slot is extended toward the first side, and the closed side faces the fourth side. Direction setting. The wideband printed dipole antenna described above for wireless applications is printed on an FR4 board having a relative dielectric constant of ε r = 4.4 and a loss tangent of 1 〇 s tangent to 〇 0245. In the above-mentioned broadband printed dipole antenna for wireless applications, the microstrip line fed by the feed portion is 5 ohms. In the above wideband printed dipole antenna for wireless applications, the first regulating metal piece and the second regulating metal piece are rectangular. The advantages of the present invention are as follows: 1. The wide-band dipole antenna of the invention applied to the WIMAX specification has a volume of only 41x15x0. 8mm3, and the printed antenna has the advantages of low posture, light weight, easy manufacture, etc. 'Because of its simple structure, the cost is relatively low. . 2. The dual-frequency operation of the present invention can cover WLAN 2. 4~2.48GHz and 5·15~5· 825GHz band 'have good radiation characteristics and isotropic radiation field radiation and is easy to do with RF circuitry Integration. 3. The antenna of the present invention can be arbitrarily designed to operate as a wideband or dual frequency, and the cost of the filter can be saved for the circuit design when operating in dual frequency, and the design only needs to use a single anti-symmetric slot to cause the suppression band. Appears to 'adjust the length of the slot to arbitrarily move the two suppression bands to high or low frequencies. '[Embodiment] First, as shown in the first figure, the system is a planar rectangular dipole antenna line' with a relative dielectric constant of er=4.4 and a loss tangent of 1〇% tangent of 〇.0245. A symmetrical rectangular feed line (b) is formed on the FR4 substrate (A) having a thickness of 〇·8 mm and an area of 41 mm X 15 mm, as shown in the second figure, the length of the rectangular feed line (B) is changed. L and width W observe the change of the return loss, fix the length L of the rectangular feed line (B), and find that when its width w is less than i〇mm, it has dual frequency and operation characteristics, and the low frequency part is symmetrical. The length of the left and right arms is also about a quarter of a wavelength resonance, which is also a one-half wavelength resonance of the total length, and the frequency ratio of the high frequency to the low frequency is about three times. 11 200931724 Come again as shown in the third figure, the fixed length of the fixed-type feed line (β). When the length of the rectangular feed line (1) is longer, the longer the length of the wave, the lower the operating frequency. In this planar rectangular dipole antenna, since both of the frequency bands belong to the narrow frequency, the WiMAX to be designed by the present invention belongs to the tri-band operation or the wide-band operation covering the tri-band, so as shown in the fourth figure, The planar rectangular dipole antenna is added to the bandwidth control unit (C), which includes the first control metal "(1) and the first control metal sheet (C2) having a rectangular shape. The symmetry is set on the upper side and the lower side of the rectangular feed line (B). As shown in the fifth figure, the rectangular rectangular dipole antenna of the bandwidth control unit (C) is added. The length of the feed line (B) is fixed as follows: • The width is 2 mm and the length is 19.5fflm. Then adjust the width of the first regulation metal month ((:1) and the second control metal piece (C2) and fix the length. As can be seen from the fifth figure, the adjustment width affects the matching of the frequency band, which has no effect on the low frequency, because the mode generated by the bandwidth control unit (c) is combined with the same frequency portion of the original dual frequency. Into a new mode, so at this time there will be no impact on the low frequency in the sixth picture, fixing the first tone of the aforementioned antenna The width w of the metal piece (C1) and the second regulating metal piece (C2) and the length adjustment [observing the influence on the impedance matching, it can be found that when the rectangular length L is less than 15 mm, the newly generated mode is combined with the original high frequency mode. Chengxin's high 12 200931724 frequency mode, when the length L is equal to 15mm, the antenna exhibits tri-band operation; when it is greater than 15mm, the mode generated by the bandwidth control unit (C) will be combined with the original mode. In the new low-frequency mode, this phenomenon is of great help to the antenna design. Therefore, the following embodiments try to use the radiation body of different shapes to achieve WiMAX-compliant frequency band operation. The structure of a single-frequency dipole antenna is such that the relative dielectric constant is ε r=4.4, and the loss tangent is 〇. 0245, the thickness of 〇 is 8 mm and the area is 41 mm x l5 mm of FR4. The substrate (1) is formed with: a radiation portion (2) printed on the substrate (1), comprising a first diamond-shaped metal piece (21) and a second diamond-shaped metal piece (22) arranged in parallel, and a first diamond-shaped metal piece (21) and a second diamond-shaped metal piece (22) There are relatively close adjacent ends and relatively far away ends. The feeding portion (3)' has a relatively upper side and a lower side, and includes a first straight line segment (31) and a second straight line segment (32), the first straight line segment ( 31) extending from the adjacent end of the first diamond-shaped metal piece (21) toward the second diamond-shaped metal piece (22), and the second straight line section (32) is formed by the adjacent end of the second diamond-shaped metal piece (22) A diamond-shaped metal piece (21) extends, leaving a gap between the first straight line segment (31) and the second straight line segment (32), and the feed portion (3) • feeds a 50 ohm signal feed line with a width of 2 mm. The eighth figure shows the return loss map of this single-frequency diamond dipole antenna. It can be well verified in practice and simulation. Its frequency range covers 2.13~2.880112, and the ninth figure (3)~(1)) ^ Rate at 200931724 2. 5GH' 主-Z plane and Χ-Υ plane of the main polarization and cross-polarization far-field radiation field shape experimental measurement results, the tenth figure for this antenna gain versus frequency change ' The highest gain of 4. 51dBi occurs in this band at 2.6 GHz. As shown in FIG. 11 , in the first embodiment of the present invention, a bandwidth control unit (4) is disposed on the antenna structure, and includes a first control metal piece (41) and a second control metal. The sheet (42) has a rectangular shape symmetrically disposed on the upper side and the lower side of the feeding portion (3), and the first cymbal regulating metal piece (41) and the second regulating metal piece (42) are distinguished by: a first side of the first diamond-shaped metal piece (21), a second side adjacent to the feeding portion (3), a third side opposite to the first side, and a fourth side, and the first regulating metal piece (41) and the second regulating metal piece (42) can effectively increase the impedance bandwidth by adjusting the length and the width. After the optimized size, the s-history width is 6 mm and the length is 13 nun, and the feeding portion ( 3) The distance between them is 0.5mm. The WiMAX dipole antenna with broadband operation has been successfully designed. The twelfth figure is the return loss map of the first embodiment, wherein the solid line represents the result of the experimental measurement, and the operating frequency band (2.34 to 6 GHz) is in accordance with the operating band of the WIMAX technology. After optimization, from the return loss return l〇ss is greater than 7.5dB, it can produce broadband operation above 2·34~6GHz, and its frequency band covers the tri-band' operating band of ψίΜΑχ. The twelfth, fourteenth and fifteenth figures are the experimental measurements of the dominant and cross-polarized far-field radiation field modes on the χ_ζ plane and the χ_γ plane at operating frequencies of 2. 5 GHz, 3. 6 GHz and 5. 5 GHz, respectively. As a result, and the results from these radiation fields 200931724 show that the antenna of the first embodiment has good main polarization radiation and is a commonly used vertical radiation (br〇adside radi^i(10)). The tenth figure shows the gain map of the antenna. It can be seen from the figure that the maximum gain values of the antennas of the three frequency bands are 4 81 , 3.61 and 4 7ldBi respectively, except for satisfying the high gain requirement of the WiMAX system, and having a smaller and thinner volume. The seventh embodiment of the present invention is a second embodiment of the present invention. The antenna of the first embodiment has a band rejection portion (5) on the bandwidth control portion (4), which is attached to the first regulating metal piece (41). And the second regulation metal piece (42) is provided with a first rejection (51) and a second rejection (52), and the first rejection (51) and the second rejection (52) are set in an antisymmetric manner. The first strip (51) is disposed on the first regulating metal piece (41), and is open from the first side thereof, and has an L-shaped slit extending toward the third side, and the closed end is disposed in the fourth side direction. The second belt rejection (52) is provided on the second regulating metal piece (42), and is opened from the third side thereof, and another L-shaped slit is extended toward the first side direction, and the closed mouth is disposed in the fourth side direction. This method can adjust the impedance of the segment to a mismatch in the frequency band where the intermediate frequency is not required by Wlan. The implementation of the eighteenth figure and the simulated return loss map are confirmed and have a good agreement. . The 19th and 20th graphs are experimental measurements of the dominant and cross-polarized far-field radiation field modes on the XZ plane and the XY plane at operating frequencies of 25 GHz and 5.9 GHz, respectively. Light radiation field radiation with good radiation characteristics and isotropic. 21(a) and (b) are antenna gain variations of the second embodiment at the two frequencies 15 200931724, confirming that the second embodiment can achieve the required dual-frequency operation, which can be covered WLAN 2. 4~2. 48GHz and 5·15~5*825GHz band' and the cost of the filter can be saved for the circuit design when dual-frequency operation, and this design only needs to use a single anti-symmetric slot The suppression band appears, and the length of the slot can be adjusted to move the two suppression bands to high or low frequencies. 11 is a third embodiment of the present invention, which is a broadband printed dipole antenna suitable for wireless applications, which differs from the first embodiment in that the second embodiment is in its radiation portion (2a), The radiation portion (2a) includes a first annular metal piece (21a) and a second annular metal piece (22a) arranged in parallel spaced apart from each other on the first annular metal piece (21a) and the second. (22a) having relatively close adjacent ends and relatively distant distal ends, and R1 in the figure is an outer diameter of the first annular metal piece (21a) and the first annular metal piece (22a), and R2 is the inside diameter of. As shown in the twenty-third figure, the R1 parameter number of the third embodiment is fixed. If the parameter is longer, the starting frequency of the broadband operation will be lower, so the R2 parameter is adjusted, and the larger the R2 is, The higher the cutoff frequency of the high frequency, the more the frequency band required by the present invention is met. The twenty-fourth embodiment is a fourth embodiment of the present invention, which is a broadband printed dipole antenna suitable for wireless applications, which is different from the first embodiment in that the fourth embodiment is in the radiation portion (2b) thereof, The radiation portion (2b) includes a first elliptical metal piece (21b) and a second elliptical metal piece (22b) arranged in parallel, and a first elliptical metal piece (21b) and a first elliptical metal piece ( 22b) having a relatively close adjacent end and a relatively distant end from 200931724, and S1 in the figure is the long axis of the first elliptical metal piece (21b) and the second elliptical metal piece (22b), and S2 is Short axis. • It can be seen from the twenty-fifth figure that when the length of the elliptical parameter S2 is larger than 2 mm, good broadband operation characteristics can be obtained. The twenty-sixth embodiment is a fifth embodiment of the present invention, which is a wide-band printed dipole antenna suitable for wireless applications, which differs from the first embodiment in that the fifth embodiment is in the radiation portion (2c) thereof. The radiating portion (2) includes a first rectangular metal piece (21c) and a second rectangular metal piece (22c) arranged in parallel, and the radiating portion may be a first square metal piece arranged in parallel intervals (in the figure) Not shown) and a second square metal sheet (not shown). So far, 'we can find out from the above examples' that we can extend the design method of the present invention to a wide-band printed dipole antenna suitable for wireless applications. Different types of architectures are of great help in design, and the wide-band dipole antennas of the WIMAX specifications of the embodiments of the present invention have a volume of only 41x15x0. 8mm3, while the printed antenna has a low posture, light weight, and easy manufacture. The advantages are that the cost is lower because of its simple structure, and the antenna of this month can be arbitrarily designed to be broadband or dual-frequency operation, and the cost of the filter can be saved for the circuit design when dual-frequency operation is performed. 4〜2. 48GHz The singularity of the squad can be used to cover the WLAN. And 5·15~5. The 825GHz band has good radiation characteristics and isotropic radiation field radiation and is easy to integrate with RF circuitry. 17 200931724 [Simple diagram] The first picture is a flat rectangle Dipole antenna structure diagram. The first picture shows the change of the return loss when the rectangular rectangular dipole antenna changes the rectangular rectangular plastic feed line. The second picture shows the rectangular rectangular dipole antenna changing the rectangular moment type. The change graph of the return loss when feeding the length of the line. The fourth figure is a structural diagram of the planar rectangular dipole antenna including the bandwidth control unit.
I 第五圖係為含有頻寬調控部之平面式矩形偶極天線改變 頻寬調控部之寬度時返射損失的變化圖。 第六圖係為含有頻寬調控部之平面式矩形偶極天線改變 .頻寬調控部之長度時返射損失的變化圖。 第七圖係單頻菱形偶極天線的幾何結構圖。 2圖係為單頻菱形偶極天線的返回損失實驗量測結果 圖。I Fig. 5 is a graph showing changes in the return loss when the planar rectangular dipole antenna including the bandwidth control unit changes the width of the bandwidth control unit. The sixth figure is a change diagram of the return loss of the planar rectangular dipole antenna including the bandwidth control section when the length of the bandwidth adjustment section is changed. The seventh picture is a geometrical diagram of a single-frequency diamond dipole antenna. 2 is a graph of the return loss experimental measurement results of a single-frequency diamond dipole antenna.
Q 第九圖（a)係為单頻菱形偶極天線在X—γ平 輻射場型圖。 面之2. 5GHz 面之2. 5GHz 係為單頻菱形偶極天線…平 第十圖係為 圖。 早頻菱形偶極天線的天線增益對頻率變化 =十一圖係為本發明第一實施例之幾何結構圖。 果圖係為本發明第一實施例之返回損失實驗量_ 200931724 .第十四圖係為本發明第—實施财财χ_γ平 •平面的3.5GHz之輻射場型圖。 第十五圖係為本發明第一實施例歹別在χ—γ平面和 Υ-Ζ平面的5.5GHz之輻射場型圖。 第十六®係為本發明第—實施例之天線增线頻率變化 圖。 第十七圖係為本發明第二實施例之幾何結構圖。 第十八圖係為本發明第二實施例之返回損失實驗量測結 果圖。 •第十九圖係為本發明第二實施例分別在χ_γ平面和γ_ζ 平面的2.5GHz之輻射場型圖。 第一十圖係為本發明第二實施例分別在χ_γ平面和Y_z 平面的5.5GHz之輻射場型圖。 Ο第二十一圖（a)係2.4〜2. 7GHz下本發明第二實施例之 天線増益對頻率變化圖。 第二十一圖（b)係5.卜5. 9GHz下本發明第二實施例之 天線增益對頻率變化圖。 第二十二圖係為本發明第三實施例之幾何結構圖。 第二十三圖係為本發明第三實施例之改變圓環狀之輻射 •部内徑R2時返射損失的變化圖。 第二十四圖係為本發明第四實施例之幾何結構圖。 第二十五圖係為本發明第四實施例之改變橢圓短轴S2 200931724 時返射損失的變化圖。 第二十六圖係為本發明第五實施例之幾何結構圖。 第二十七圖係為本發明第五實施例之返射損失的變化 圖。 ΟQ Figure 9 (a) shows the X-γ flat radiation pattern of a single-frequency diamond dipole antenna. 2. The 5GHz surface is 2. 5GHz is a single-frequency diamond dipole antenna... The tenth figure is the figure. Antenna gain vs. frequency change of the early frequency diamond dipole antenna = eleven is a geometrical diagram of the first embodiment of the present invention. The figure is the return loss experimental amount of the first embodiment of the present invention_200931724. The fourteenth figure is the radiation field pattern of the 3.5 GHz of the first implementation of the invention. The fifteenth diagram is a radiation pattern diagram of 5.5 GHz which is discriminated between the χ-γ plane and the Υ-Ζ plane in the first embodiment of the present invention. The sixteenth® is a graph showing the increase in the frequency of the antenna increase in the first embodiment of the present invention. Figure 17 is a geometrical view of a second embodiment of the present invention. The eighteenth figure is a graph of the return loss experimental measurement result of the second embodiment of the present invention. • Fig. 19 is a radiation pattern diagram of 2.5 GHz in the χ_γ plane and the γ_ζ plane, respectively, according to the second embodiment of the present invention. The tenth graph is a radiation pattern diagram of 5.5 GHz in the χ_γ plane and the Y_z plane, respectively, according to the second embodiment of the present invention. Figure 21 (a) is a diagram showing the antenna gain versus frequency variation of the second embodiment of the present invention at 2.4 GHz. Figure 21 (b) is a diagram showing the antenna gain vs. frequency variation of the second embodiment of the present invention at 5. GHz. The twenty-second figure is a geometrical view of the third embodiment of the present invention. The twenty-third figure is a diagram showing a change in the return loss when the inner diameter R2 of the annular portion is changed according to the third embodiment of the present invention. The twenty-fourth embodiment is a geometrical view of the fourth embodiment of the present invention. The twenty-fifth figure is a change diagram of the return loss when the elliptical short axis S2 200931724 is changed in the fourth embodiment of the present invention. The twenty-sixth drawing is a geometrical view of the fifth embodiment of the present invention. The twenty-seventh embodiment is a diagram showing the change of the return loss in the fifth embodiment of the present invention. Ο
【主要元件符號說明】 (1) 基板 (2) 輻射部 (21) 第一菱形金屬片 (22) 第二菱形金屬片 (3) 饋入部 (31) 第一直線段 (32) 第二直線段 (4) 頻寬調控部 (41) 第一調控金屬片 (42) 第二調控金屬片 (5) 帶拒部 (51) 第一帶拒 (52) 第二帶拒 (2a) 輻射部 (21a) 第一環形金屬片 (22a) 第二環形金屬片 (2b) 輻射部 (21b) 第一橢圓形金屬片 (22b) 第二橢圓形金屬 (2c) 輻射部 (21c) 第一矩形金屬片 (22c) 第二矩形金屬片 (A) 基板 (B) 矩形饋入線 (C) 頻寬調控部 (Cl) 第一調控金屬片 (C2) 第二調控金屬片 20[Description of main component symbols] (1) Substrate (2) Radiation section (21) First rhombic metal piece (22) Second rhombic metal piece (3) Feeding section (31) First straight section (32) Second straight section ( 4) Bandwidth control section (41) First regulating metal piece (42) Second regulating metal piece (5) Tapering part (51) First band rejection (52) Second band rejection (2a) Radiation section (21a) First annular metal piece (22a) second annular metal piece (2b) radiation part (21b) first elliptical metal piece (22b) second elliptical metal (2c) radiation part (21c) first rectangular metal piece ( 22c) Second rectangular metal piece (A) Substrate (B) Rectangular feed line (C) Bandwidth control part (Cl) First regulating metal piece (C2) Second regulating metal piece 20