1245453 九、發明說明： 【發明所屬之技術領域】 本發明係關於一種蝶型低軸比寬頻圓極化微帶天線，特 別疋指一種介質基板上層表面利用導電金屬蝕刻一蝶型輻 射器之低軸比寬頻圓極化微帶天線。 【先前技術】 無線通訊和衛星通訊，諸如：無線區域呼叫、無線區域網 路、無線通信電話系統、衛星定位系統…等通訊網路，所以 從—提出就有如雨後春筍般的產生並也得到的很高的重 視。而微帶天線已廣泛應用於商業用途上，其設計與分析已 十刀成沾，其生產的直接成本幾乎只有基板材料的成本。 因其微帶天線可以很好的實現激勵幅度和相位調節，並且適 當的改變微帶天線間距也可以實現相位差別。 微帶天線可由雙面電路板蝕刻製作而成，其結構包含微 帶金屬片（patch)、介質基板、接地平面及饋入電路；其基本 特性主要有:共振頻率、頻寬、增益、輻射場型、極化波及 輸入阻抗。 且微帶天線具有重量輕 可依附在任何物體的表面， 、低側高的優點，同時微帶天線 與傳統天線相較之下，較不影響 物體之外觀。並且，隨著改春料器 有又夂锨V天線其金屬片之形狀，或 者選擇不同的激發模態，我們將可p ^ 我们將可侍到不同的輻射場型和極 性，同時它可裝設在任何彎曲#^ 弓曲表面，因此其應用將日益廣 I245453 j 曰 曰 ， 一疋’甶於微帶天線具有頻寬窄的缺點，因此，如何準 °十^其共振頻率或操作頻率，在微帶天線的設計上相當重 要。 π習用微帶天線改良構造之先前技術，請參考我國申請案 號專利案（下稱引證案），其主要構成特徵 為 * /山 •一種微帶天線改良構造，主要包含有外殼、底座及電極 ”特U在於·電極板之設計係於一印刷電路銅板上設計 有夕組電極層，其中一端電極以其中央之連結端處設有一貫1245453 IX. Description of the invention: [Technical field to which the invention belongs] The present invention relates to a butterfly-type low-axis-ratio wide-band circularly polarized microstrip antenna, and particularly refers to the low level of a butterfly radiator etched by a conductive metal on the upper surface of a dielectric substrate. Axial ratio broadband circularly polarized microstrip antenna. [Previous technology] Wireless communication and satellite communication, such as: wireless area calling, wireless local area network, wireless communication telephone system, satellite positioning system, etc., so from the proposal, it has sprung up and has been very high. Attention. Microstrip antennas have been widely used in commercial applications, and their design and analysis have been perfected. The direct cost of production is almost only the cost of substrate materials. Because the microstrip antenna can well realize the excitation amplitude and phase adjustment, and the microstrip antenna spacing can be changed to achieve the phase difference. A microstrip antenna can be made by etching a double-sided circuit board. Its structure includes a microstrip metal patch, a dielectric substrate, a ground plane, and a feed circuit. Its basic characteristics are: resonance frequency, bandwidth, gain, and radiation field. Type, polarization and input impedance. And the microstrip antenna has the advantages of light weight and can be attached to the surface of any object, and the low side is high. At the same time, compared with the traditional antenna, the microstrip antenna does not affect the appearance of the object. And, as the spring feeder has the shape of the metal plate of the V antenna, or choose a different excitation mode, we will be able to p ^ we will be able to serve different radiation field types and polarities, at the same time it can be installed It is set on any curved surface, so its application will be more and more widely. I245453 j said that a microstrip antenna has the disadvantage of narrow bandwidth. Therefore, how to accurately determine its resonance frequency or operating frequency in micro The design with an antenna is very important. For the previous technology of the improved structure of π conventional microstrip antennas, please refer to China's application for a patent (hereinafter referred to as the "citation case"). Its main features are: * / 山 • A microstrip antenna improved structure, which mainly includes a shell, a base and an electrode "U special lies in the design of the electrode plate is a printed circuit copper board designed with a group of electrode layers, one end of the electrode with its central connection end is provided with a consistent
孑L N 此貝孔可供鎖接螺絲由底座下方向上貫穿鎖固而結 0，電極板設置於底座上方時，可由於鎖接螺絲電極板之貫 孔貝穿結合後，將底座與電極板調整至最佳距離後，於鎖接 螺絲之螺紋部頂端予以帛固定&，並藉螺紋部達到較佳焊固 的結合效果。 由此可見，增加微帶天線頻寬和增益、輻射場型之控制， 縮小微帶天線金屬片面積、多頻操作..等等為K寺加以改 良之方向。 本案發明人乃亟思加以改良創新，並經多年苦心孤詣潛 心研究後’料成功研發完成本件蝶型低軸比寬頻圓極化: 帶天線。 【發明内容】 本發明之目的即在於提供一種三層介質基板於空間上互 1245453 相堆豐设置而成之蝶型低軸比寬頻圓極化微帶天線。 本發明之次一目的係在於提供一種第二層介質基板上層 表钱j有蝶型輪射為之蝶型低軸比寬頻圓極化微帶天 線。 本發明之另一目的係在於提供一種第三層介質基板上層 表面蝕刻有一增益增強及軸比微調器之蝶型低軸比寬頻圓 極化微帶天線。 本發明之又-目的係在於提供—種增益增強及軸比微調 益猎能激勵高頻電磁場之蝶型低軸比寬頻圓極化微帶天線。 可達成上述發明目的之蝶型低軸比寬頻圓極化微帶天 線，係有三層介質基板於空間上互相堆疊設置，包括有： 第層"貝基板，係於上層表面利用導電金屬蝕刻一 微帶轉換器，並於該微帶轉換器上設置_作為信號饋入之饋 入點； ' -第二層介質基板，餘上層表面利用導電金屬钱刻一 蝶型_，其下層表面作為與第一層介質基板上層表面接 觸之導體層； -第三層介質基板，係於上層表面利用導電金屬姓刻一 增益增強及軸比微調器’其下層表面係與第二層介質基板上 層表面接觸；以及 能對第一層 一連接線，係為一 0.22倍波長之圓柱實心 1245453 介質基板與第二層介質基板作電氣連結饋電。 【實施方式】 嫌請參閱«—，本發明所提供之蝶型低軸比寬頻圓極化微 帶天線，主要是由一第一層介質基板、一第二層介質基板以 及-第三層介質基板在空間上互相堆疊設置而成，並再以一 連接線連接第-層介質基板與第二層介質基板之兩層導 體，使該天線以微帶轉換器饋入信號激發蝶型輻射器以達蝶 型輻射器與軸比微調器之間激勵高頻電磁場，並通過蝶型輻 射器四周與軸比微調器之間的縫隙向外傳送電磁輻射訊號。 該第-層介質基板，係於上層表面利用導電金屬蝕刻一 微帶轉換器，並於該微帶轉換器上設置—料信號饋入之饋 入點，該鑛入點係與微帶轉換器作電氣連结，係作為信號輸 入或輸出埠；該第二層介質基板，係於上層表面利用導電金 屬蝕刻一蝶型輻射器’其下層表面作為與第一層介質基板上 層表面接觸之導體層；該第三層介質基板，係於上層表面利 用導電金屬蝕刻一增益增強及軸比微調器，其下層表面係與 第二層介質基板上層表面接觸；以及該連接線，對第一層介 質基板與第二層介質基板作電氣連結饋電。 為更詳細說明本發明，請再參閱圖一，為本發明蝶型低 轴比寬頻圓極化微帶天線之一實施例圖。 本發明之蝶型低軸比寬頻圓極化微帶天線係由三層介質 1245453 基板於空間上互相堆疊設置而成，其介質基板係可為一介電 常數為4.4 (F/m)之微波用高感度印刷電路板之FR4印刷電 路板或是一介電常數為3· 38 (F/m)之微波用高感度印刷電路 板之R0印刷電路板所形成，本發明之蝶型低軸比寬頻圓極 化微帶天線亦設置有一饋入點來與使用此天線之電子裝置 連結，該饋入點係讓饋入信號經由第一層介質基板之微帶轉 換器進入後，經由一與第二層介質基板作電氣連結饋電之 〇_ 22倍波長之圓柱實心連接線進入到第二層介質基板，使第 二層介質基板之蝶型輻射器與第三層介質基板之增益增強 及軸比微調器能因信號的饋入而激勵高頻電磁場，並使高頻 電磁場通過蝶型輻射器四周與軸比微調器之間的縫隙向外 傳送電磁輻射訊號。孑 LN This bevel hole can be used for the locking screw to penetrate through the bottom of the base and lock up. When the electrode plate is set above the base, the base plate and the electrode plate can be adjusted after the through hole of the locking screw electrode plate is combined. After reaching the optimal distance, fix it at the top of the threaded part of the locking screw, and use the threaded part to achieve a better bonding effect. It can be seen that increasing the control of the bandwidth and gain of the microstrip antenna, the radiation field pattern, reducing the area of the metal strip of the microstrip antenna, multi-frequency operation, etc. are the directions for K Temple to improve. The inventor of this case is eager to improve and innovate, and after years of painstaking research, he is expected to successfully develop this butterfly low-axle ratio broadband circular polarization: with antenna. [Summary of the Invention] The object of the present invention is to provide a butterfly-type low-axle-broadband circularly polarized microstrip antenna with three layers of dielectric substrates arranged in a 1245453 phase space. A second object of the present invention is to provide a second-layer dielectric substrate on the upper surface of the substrate, which has a butterfly-shaped round beam and a butterfly-shaped low-axle ratio broadband circularly polarized microstrip antenna. Another object of the present invention is to provide a butterfly-type low-axle wide-band circularly polarized microstrip antenna with a gain enhancement and axial ratio trimmer etched on the upper layer of the third dielectric substrate. Another object of the present invention is to provide a butterfly-type low-axis-ratio wide-band circularly polarized microstrip antenna capable of boosting high-frequency electromagnetic fields and improving the gain of the axial ratio. The butterfly-type low-axle ratio broadband circularly polarized microstrip antenna that can achieve the above-mentioned object of the invention has three layers of dielectric substrates stacked on top of each other in space, including: a first layer " shell substrate, which is etched on the upper surface with a conductive metal. A microstrip converter, and _ is set as a feed point for signal feeding on the microstrip converter; '-the second layer of the dielectric substrate, the upper surface is carved with a butterfly _ using conductive metal money, and the lower surface is used as a Conductor layer in contact with the upper surface of the first layer of dielectric substrate;-The third layer of dielectric substrate is engraved on the upper layer with a conductive metal surname for gain enhancement and axial ratio spinner. Its lower surface is in contact with the upper surface of the second dielectric substrate ; And the first layer of a connection line, which is a 0.22 times the length of a cylindrical solid 1224553 dielectric substrate and the second layer of dielectric substrate for electrical connection feed. [Embodiment] Please refer to «—, the butterfly type low-axle ratio broadband circularly polarized microstrip antenna provided by the present invention is mainly composed of a first layer dielectric substrate, a second layer dielectric substrate, and a third layer dielectric The substrates are stacked on top of each other in space, and then the two layers of conductors of the first-layer dielectric substrate and the second-layer dielectric substrate are connected by a connection line, so that the antenna feeds the signal with a microstrip converter to excite the butterfly radiator to The high-frequency electromagnetic field is excited between the butterfly radiator and the axial ratio trimmer, and the electromagnetic radiation signal is transmitted outward through the gap between the periphery of the butterfly radiator and the axial ratio trimmer. The first-layer dielectric substrate is a microstrip converter etched with a conductive metal on the upper surface, and a feeding point for feeding material signals is provided on the microstrip converter. The mining point is related to the microstrip converter. For electrical connection, it is used as a signal input or output port; the second dielectric substrate is etched with a conductive metal on the upper surface of a butterfly radiator, and its lower surface is used as a conductor layer in contact with the upper surface of the first dielectric substrate. ; The third layer dielectric substrate is etched by a conductive metal with a gain enhancement and axial ratio trimmer on the upper layer surface, and the lower surface is in contact with the upper surface of the second layer dielectric substrate; and the connection line is for the first layer dielectric substrate It is electrically connected to the second-layer dielectric substrate for feeding. In order to explain the present invention in more detail, please refer to FIG. 1 again, which is a diagram of an embodiment of a butterfly low-axis ratio wideband circularly polarized microstrip antenna of the present invention. The butterfly low-axle ratio broadband circularly polarized microstrip antenna of the present invention is formed by stacking three layers of dielectric 1245453 substrates on top of each other in space. The dielectric substrate may be a microwave having a dielectric constant of 4.4 (F / m). FR4 printed circuit board with high-sensitivity printed circuit board or R0 printed circuit board with microwave high-sensitivity printed circuit board with dielectric constant of 3 · 38 (F / m), the butterfly type low axial ratio of the present invention The broadband circularly polarized microstrip antenna is also provided with a feed point to connect with the electronic device using the antenna. The feed point allows the feed signal to enter through the microstrip converter of the first layer dielectric substrate, and then passes through a The two-layer dielectric substrate is used to electrically connect the cylindrical solid connection cable of _ 22 times the wavelength of the feed to the second-layer dielectric substrate, so that the butterfly radiator of the second-layer dielectric substrate and the gain of the third-layer dielectric substrate are enhanced. The ratio trimmer can excite the high-frequency electromagnetic field due to the feeding of the signal, and cause the high-frequency electromagnetic field to transmit electromagnetic radiation signals through the gap between the periphery of the butterfly radiator and the axial ratio trimmer.
本發明係利用蝶型微帶貼片天線黏貼在背面有導體金屬 的介質基片上而形&的天 '線，且經由溝槽孔隙輪合之方式饋 電’使微帶轉換器與蝶型輻射器之間的空間猶如一個上下為貝 電壁、四周為磁壁的增益增強及軸比微調器藉以激勵高頻電 磁場輸入以及利用偏離中心孔隙耦合以產生圓極化電磁波 向外輻射。 或 當微帶天線與微帶轉換器匹配時， 由被V天線向接收機傳輸的功率最大 由發射機向微帶天線 ，這時在微帶轉換器 上不會出現反射波 反射係數等於零，駐波係數等於The invention uses a butterfly-type microstrip patch antenna to stick & antennas on a dielectric substrate with a conductive metal on the back, and feeds it through the groove-hole wheel to make the microstrip converter and butterfly The space between the radiators is like a galvanic wall up and down and a magnetic wall around it for gain enhancement and axial ratio trimmer to excite high frequency electromagnetic field input and use off-center pore coupling to generate circularly polarized electromagnetic waves to radiate outward. Or when the microstrip antenna matches the microstrip converter, the maximum power transmitted by the V antenna to the receiver is from the transmitter to the microstrip antenna. At this time, the reflection coefficient of the reflected wave will not appear on the microstrip converter. Coefficient equal
10 1245453 $天線與微帶轉換器匹配的好壞程度用天線饋入點的反射 係數或駐波比的大小來衡量，故請參閲圖五，在本發明之寬10 1245453 $ The degree of matching between the antenna and the microstrip converter is measured by the reflection coefficient or the standing wave ratio of the antenna feed point, so please refer to Figure 5.
Loss)實驗 頻圓極化環型微帶天線之反射返回損失（Return 圖中，以2. 1GHz為設計操作頻率在RL=—25 dB以下之阻 抗頻寬約為21%。：對於發射天線來說，如果匹配不好，則天 線的輻射功率就會減小，微帶轉換器上的損耗會增大，微帶 轉換器的功率容量也會下降’嚴重時還會出現振盈頻率發生 2化，由圖六之蝶型低軸比寬頻圓極化微帶天線之軸比與頻 率之關係之蝶型低車由比寬頻圓極化微帶天線之 圓 之關係圖中可得之採用三層介質基板互 極化增益與頻率 相堆豐設置而成之蝶型低軸比寬頻圓極化微帶天線，可明顯 增大微帶天線設計為圓極化時的3仳窄頻軸比之瓶頸，故 1輻射效率與天線效率與頻率，在Η·之設計操作頻率 時其輕射效率與天線效率均達到約5G%左右，如圖八所示。 上列洋細說明係針對本發明之一可行實施例之具體說 月准口亥實施例並非用以限制本發明之專利範圍，凡未脫離 本毛月技藝精神所為之等效實施或變更，均應包含於本案之 專利範圍中。 斤述本案不但在空間型態上確屬創新，並能較習 用口增進上述多項功效，應已充分符合新穎性及進步性之 I月專利要件，爰依法提出巾請，懇_貴局核准本件 J245453 發明專利申請案，以勵發明，至感德便。 【圖式簡單說明】 清麥閱以下有關本發明一較佳實施例之詳細說明及其附 圖，將可進-步瞭解本發明之技術内容及其目的功效；有關 該實施例之附圖為： 圖一為本發明蝶型低軸比寬頻圓極化微帶天線之立體示 意圖； 圖一為該蝶型低軸比寬頻圓極化微帶天線之頂面視意 圖， 圖二為该蝶型低軸比寬頻圓極化微帶天線之第二立體示 意圖； 圖四為該蝶型低軸比寬頻圓極化微帶天線之前側示意 圖， 圖五為該蝶型低軸比寬頻圓極化微帶天線之返回損失 (Return Loss)圖； 圖六為該蝶型低軸比寬頻圓極化微帶天線之轴比與頻率 之關係圖； 圖七為該蝶型低軸比寬頻圓極化微帶天線之圓極化增益 與頻率之關係圖；以及 圖八為該蝶型低軸比寬頻圓極化微帶天線之圓極化輻射 效率與天線效率對頻率之關係圖。 12 1245453 【主要元件符號說明】 1饋入點 2微帶轉換器 3連接線 4蝶型輻射器 5增益增強及軸比微調器Loss) Experimental return loss of circularly polarized circular microstrip antenna (Return chart, with 2.1 GHz as the operating frequency, the impedance bandwidth below RL = -25 dB is about 21% .: For the transmitting antenna Say, if the matching is not good, the radiated power of the antenna will be reduced, the loss on the microstrip converter will increase, and the power capacity of the microstrip converter will also be reduced. From the relationship between the axial ratio and the frequency of the circular low-polarization circularly polarized microstrip antenna of the butterfly low-shaft wide-band antenna in Figure 6, the three-layer dielectric is available in the diagram of the circular relationship of the circular-polarized microstrip antenna of the wide-band wideband. The butterfly type low-axle ratio wideband circularly polarized microstrip antenna, which is set up with the substrate cross-polarization gain and frequency phase, can significantly increase the bottleneck of the 3 仳 narrow-frequency axial ratio when the microstrip antenna is designed to be circularly polarized. Therefore, 1 radiation efficiency and antenna efficiency and frequency, the light emission efficiency and antenna efficiency are about 5G% at the design operating frequency of Η ·, as shown in Figure 8. The detailed description of the above list is feasible for the present invention. The specifics of the embodiments The scope of the patent for making the invention, any equivalent implementation or change that does not depart from the technical spirit of this Maoyue, should be included in the scope of the patent of this case. It is not only that this case is indeed an innovation in space type, but also can be used more commonly. To enhance the above-mentioned multiple effects, you should have fully complied with the novelty and progressiveness of the I-month patent requirements, and submitted a request in accordance with the law. Your office approves this J245453 application for an invention patent in order to encourage inventions and feel good. [Figure] Brief description of the formula] Qingmai read the following detailed description of a preferred embodiment of the present invention and its accompanying drawings, and will further understand the technical content of the present invention and its purpose and effect; the drawings related to this embodiment are: One is a schematic perspective view of the butterfly low-axis-ratio wide-band circularly polarized microstrip antenna; FIG. 1 is a top view of the butterfly low-axis-ratio wide-band circularly polarized microstrip antenna, and FIG. 2 is the butterfly low-axis The second three-dimensional schematic diagram of the wideband circularly polarized microstrip antenna; Figure 4 is a schematic front view of the butterfly low-axis ratio wideband circularly polarized microstrip antenna; Figure 5 is the butterfly low-axis ratio wideband circularly polarized microstrip antenna Return loss (Return Loss) diagram; Figure 6 is the relationship between the axial ratio and frequency of the butterfly low-axis-width broadband circularly polarized microstrip antenna; Figure 7 is the circular pole of the butterfly low-axis ratio broadband circularly-polarized microstrip antenna Figure 8 shows the relationship between the gain and frequency; and Figure 8 shows the relationship between the circular polarization radiation efficiency and antenna efficiency of the butterfly low-shaft wideband circularly polarized microstrip antenna. 12 1245453 [Description of main component symbols] 1 feed Entry point 2 Microstrip converter 3 Connecting line 4 Butterfly radiator 5 Gain enhancement and axial ratio trimmer
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