金屬邊界終端WLAN天線
發(fā)布時間：2019-01-10 15:46
【摘要】：隨著無線網(wǎng)絡通信的廣泛應用,人們連接到互聯(lián)網(wǎng)更加便捷快速。其中,無線局域網(wǎng)(WLAN)是移動終端和互聯(lián)網(wǎng)之間建立可靠、快速、安全連接比較普遍的技術(shù),最常用的WLAN標準包含IEEE 802.11a/b/g。多功能化、智能化、超薄超輕以及金屬質(zhì)感是移動終端發(fā)展的潮流,而其天線是移動終端WLAN調(diào)制信號的發(fā)射源和接收源,所設計的參數(shù)指標對整個無線系統(tǒng)至關(guān)重要,這就給移動終端天線的設計帶來了巨大機遇與挑戰(zhàn)。傳統(tǒng)的WLAN天線具有良好的傳輸參數(shù),但是其尺寸太大或者不適用于金屬邊界情況,因此研究和設計符合移動終端發(fā)展潮流的WLAN天線具有極其重要的實際意義。本文首先介紹了WLAN協(xié)議以及相關(guān)技術(shù)的發(fā)展;并介紹目前國內(nèi)外WLAN天線的發(fā)展現(xiàn)狀和本文所要解決的難題以及設計方法。其次,提出了兩款基于環(huán)天線的具有極低剖面的適用于全金屬邊界的平板電腦天線方案。文中使用的平板電腦是10.1英寸(約為250 mm×170 mm),其中屏幕大小是232 mm×130 mm,厚度為3 mm,因此預留給天線的空間是極其有限的。設計的兩款WLAN雙頻天線的具有極低剖面(高度都只有3 mm)是其最大的設計亮點和創(chuàng)新;第一款天線是一個雙環(huán)結(jié)構(gòu),雙環(huán)分別獨立諧振于2.4 GHz和5.8GHz,占據(jù)面積為26.8 mm×8.5 mm,第二款天線融合了環(huán)天線和IFA天線的設計,其高頻5.8 GHz是借助方案一的環(huán)天線思路,低頻2.4 GHz是采用IFA結(jié)構(gòu),占據(jù)面積為31.9 mm×6 mm,為未來低剖面金屬邊界的移動終端天線設計帶來了新的思路。再次,基于前面兩款環(huán)天線方案設計了三款新型對稱圓環(huán)雙頻WLAN全向天線。第一款天線是基于方案一的雙環(huán)結(jié)構(gòu),由六個環(huán)組成了對稱圓環(huán)天線,天線整體分為上下兩層結(jié)構(gòu):上面一層物理尺寸和2.4 GHz的1/2波長相對應,下面一層物理尺寸和5.8 GHz的1/2波長相對應。第二款天線是基于方案二的新型IFA天線,由六個IFA結(jié)構(gòu)組成了中心對稱結(jié)構(gòu)。第三款天線和第二款天線的設計思路一致,用來應對當天線的地板大小不同時對天線參數(shù)的影響,而且進一步減小了天線的高度。設計的三款中心對稱圓天線具有良好的阻抗帶寬和球域或半球域全向性,覆蓋了2.4 GHz/5.8 GHz頻段,而且其結(jié)構(gòu)具有對稱性。最后,本文提出了一款用于無人機的小型化圓形微帶天線,其充分利用了無人機攝像機支架部分,使得在無人機攝像頭旋轉(zhuǎn)時,天線的輻射方向圖幾乎保持不變。所設計的天線尺寸為π×102 mm2×3 mm,具有較寬的帶寬和半球域全向性,適用于5.8 GHz WLAN通信。本文所設計的兩款超低剖面全金屬邊界的WLAN天線、三款全向天線以及一款無人機天線都具有良好的阻抗特性,天線的測試結(jié)果滿足頻段內(nèi)大于10 dB的回波損耗和大于60%的效率要求以及全向性。
[Abstract]:With the wide application of wireless network communication, people connect to the Internet more convenient and faster. Among them, WLAN (WLAN) is a reliable, fast and secure connection technology between mobile terminal and Internet. The most commonly used WLAN standard includes IEEE 802.11a / b / g. Multifunctional, intelligent, ultra-thin, ultra-light and metal texture are the trend of mobile terminal development, and its antenna is the transmitter and receiver of WLAN modulation signal of mobile terminal. The parameter index is very important to the whole wireless system. This brings great opportunities and challenges to the design of mobile terminal antenna. The traditional WLAN antenna has good transmission parameters, but its size is too large or not suitable for the metal boundary case, so it is of great practical significance to study and design the WLAN antenna which conforms to the development trend of mobile terminal. This paper first introduces the development of WLAN protocol and related technologies, and introduces the current development of WLAN antenna at home and abroad, the problems to be solved in this paper and the design method. Secondly, two planar computer antenna schemes with very low profile based on ring antenna are proposed for all metal boundary. The tablet used in this paper is 10.1-inch, and the screen size is 232 mm 脳 130 mm, and the thickness is 3 mm, so the space reserved for the antenna is extremely limited. The design of two WLAN dual-frequency antennas with very low profile (height only 3 mm) is the biggest design highlight and innovation; The first antenna is a two-ring structure, which resonates independently at 2.4 GHz and 5.8 GHz, respectively, and occupies an area of 26.8 mm 脳 8.5 mm,. The second antenna combines the design of the ring antenna and the IFA antenna. The high frequency 5.8 GHz is based on the idea of ring antenna of scheme one, and the low frequency 2.4 GHz is constructed with IFA structure, occupying an area of 31.9 mm 脳 6 mm, which brings a new idea for the design of mobile terminal antenna with low profile metal boundary in the future. Thirdly, three new symmetrical ring dual frequency WLAN omnidirectional antennas are designed based on the two previous ring antenna schemes. The first antenna is a two-ring structure based on scheme one, which consists of six rings. The antenna is divided into two layers: the physical size of the upper layer corresponds to the 1 / 2 wavelength of 2. 4 GHz. The physical size of the next layer corresponds to the 1 / 2 wavelength of 5.8 GHz. The second antenna is a new type of IFA antenna based on scheme 2, which consists of six IFA structures. The design idea of the third antenna and the second antenna is the same, which is used to deal with the influence of the different floor size on the antenna parameters, and further reduces the antenna height. The three center-symmetric circular antennas have good impedance bandwidth, spherical or hemispherical omni-directionality, covering the 2.4 GHz/5.8 GHz band, and their structures have symmetry. Finally, a miniaturized circular microstrip antenna for UAV is proposed, which makes full use of the UAV camera bracket and makes the radiation pattern of the antenna almost unchanged when the UAV camera rotates. The designed antenna size is 蟺 脳 10 ~ 2 mm2 脳 3 mm, with wide bandwidth and hemispherical omni-directional, which is suitable for 5.8 GHz WLAN communication. In this paper, two ultra-low profile all-metal boundary WLAN antennas, three omnidirectional antennas and one UAV antenna have good impedance characteristics. The antenna test results satisfy the echo loss of more than 10 dB and the efficiency requirement of more than 60% in the frequency band.
【學位授予單位】：電子科技大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TN828
本文編號：2406496
[Abstract]:With the wide application of wireless network communication, people connect to the Internet more convenient and faster. Among them, WLAN (WLAN) is a reliable, fast and secure connection technology between mobile terminal and Internet. The most commonly used WLAN standard includes IEEE 802.11a / b / g. Multifunctional, intelligent, ultra-thin, ultra-light and metal texture are the trend of mobile terminal development, and its antenna is the transmitter and receiver of WLAN modulation signal of mobile terminal. The parameter index is very important to the whole wireless system. This brings great opportunities and challenges to the design of mobile terminal antenna. The traditional WLAN antenna has good transmission parameters, but its size is too large or not suitable for the metal boundary case, so it is of great practical significance to study and design the WLAN antenna which conforms to the development trend of mobile terminal. This paper first introduces the development of WLAN protocol and related technologies, and introduces the current development of WLAN antenna at home and abroad, the problems to be solved in this paper and the design method. Secondly, two planar computer antenna schemes with very low profile based on ring antenna are proposed for all metal boundary. The tablet used in this paper is 10.1-inch, and the screen size is 232 mm 脳 130 mm, and the thickness is 3 mm, so the space reserved for the antenna is extremely limited. The design of two WLAN dual-frequency antennas with very low profile (height only 3 mm) is the biggest design highlight and innovation; The first antenna is a two-ring structure, which resonates independently at 2.4 GHz and 5.8 GHz, respectively, and occupies an area of 26.8 mm 脳 8.5 mm,. The second antenna combines the design of the ring antenna and the IFA antenna. The high frequency 5.8 GHz is based on the idea of ring antenna of scheme one, and the low frequency 2.4 GHz is constructed with IFA structure, occupying an area of 31.9 mm 脳 6 mm, which brings a new idea for the design of mobile terminal antenna with low profile metal boundary in the future. Thirdly, three new symmetrical ring dual frequency WLAN omnidirectional antennas are designed based on the two previous ring antenna schemes. The first antenna is a two-ring structure based on scheme one, which consists of six rings. The antenna is divided into two layers: the physical size of the upper layer corresponds to the 1 / 2 wavelength of 2. 4 GHz. The physical size of the next layer corresponds to the 1 / 2 wavelength of 5.8 GHz. The second antenna is a new type of IFA antenna based on scheme 2, which consists of six IFA structures. The design idea of the third antenna and the second antenna is the same, which is used to deal with the influence of the different floor size on the antenna parameters, and further reduces the antenna height. The three center-symmetric circular antennas have good impedance bandwidth, spherical or hemispherical omni-directionality, covering the 2.4 GHz/5.8 GHz band, and their structures have symmetry. Finally, a miniaturized circular microstrip antenna for UAV is proposed, which makes full use of the UAV camera bracket and makes the radiation pattern of the antenna almost unchanged when the UAV camera rotates. The designed antenna size is 蟺 脳 10 ~ 2 mm2 脳 3 mm, with wide bandwidth and hemispherical omni-directional, which is suitable for 5.8 GHz WLAN communication. In this paper, two ultra-low profile all-metal boundary WLAN antennas, three omnidirectional antennas and one UAV antenna have good impedance characteristics. The antenna test results satisfy the echo loss of more than 10 dB and the efficiency requirement of more than 60% in the frequency band.
【學位授予單位】：電子科技大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TN828
【參考文獻】
相關(guān)期刊論文 前10條
1 李晨楠;劉玉虎;傅世強;;WIFI頻段波束可切換開關(guān)天線的設計與實現(xiàn)[J];科技創(chuàng)新導報;2016年21期
2 嚴冬;程亞軍;汪朋;李帥永;王平;;基于結(jié)構(gòu)合成法的微型化雙頻WLAN印刷天線設計[J];儀器儀表學報;2016年06期
3 牛雪彬;梁建剛;吳國成;林永范;吳瑞;;一種新型小型化三頻微帶天線的設計[J];壓電與聲光;2016年01期
4 徐凱;;一款WiFi頻段八木天線的設計與實現(xiàn)[J];物聯(lián)網(wǎng)技術(shù);2016年01期
5 潘勇;熊江;李潘;;一種新型寬頻帶多頻微帶天線設計[J];電訊技術(shù);2015年04期
6 栗建豪;吳多龍;吳艷杰;黎宇彪;;一款共面可覆蓋WLAN及WiMAX頻段的三頻筆記本電腦天線的設計[J];廣東工業(yè)大學學報;2014年01期
7 肖婷;郭慶功;;一種應用于WLAN/WIMAX的三頻微帶天線[J];四川大學學報(自然科學版);2014年01期
8 吳家國;周曉明;;一種應用于GPS和WLAN的高增益雙頻天線的設計[J];電子技術(shù)應用;2012年07期
9 趙春喜;郭維巍;張秋實;許瑞旭;陳順;;一種寬帶高增益微帶陣列天線[J];科技信息;2010年30期
10 趙春喜;;用于WiFi/WiMAX新型雙極化微帶天線陣列[J];科技信息;2010年20期
相關(guān)會議論文 前1條
1 王玉峰;;一種適用于IEEE802.11b標準的高增益WLAN天線[A];2011年全國微波毫米波會議論文集（上冊）[C];2011年
相關(guān)博士學位論文 前1條
1 任王;小型微帶天線分析與設計[D];浙江大學;2008年
相關(guān)碩士學位論文 前1條
1 郭德金;應用于無線局域網(wǎng)的雙頻天線設計[D];西安電子科技大學;2011年
，本文編號：2406496
本文鏈接：http://sikaile.net/kejilunwen/xinxigongchenglunwen/2406496.html
最近更新
教材專著
