电讯技术
電訊技術
전신기술
TELECOMMUNICATIONS ENGINEERING
2013年
2期
205-208
,共4页
无线光纤分布系统%单极子%低剖面天线%耦合加载
無線光纖分佈繫統%單極子%低剖麵天線%耦閤加載
무선광섬분포계통%단겁자%저부면천선%우합가재
wireless fiber distribution system%monopole%low-profile antenna%coupling-load
设计了一种小型化双频天线.通过在单极子天线上引入寄生耦合的方法,即在单极子顶部引入耦合加载板,既保证了单极子天线的辐射全向性又减小了电小天线的分布电容,从而使该天线具有宽频带、低剖面特性.采用仿真软件Ansoft HFSS进行仿真和优化,优化结果表明:该天线工作频率为824~960 MHz/1710~2690 MHz(驻波比小于等于2).根据仿真模型制作了一款天线,实测驻波带宽可达811~1050 MHz/1580~2660 MHz,且在水平面内辐射全向方向图.该天线在限制尺寸的情况下有效地展宽了带宽.
設計瞭一種小型化雙頻天線.通過在單極子天線上引入寄生耦閤的方法,即在單極子頂部引入耦閤加載闆,既保證瞭單極子天線的輻射全嚮性又減小瞭電小天線的分佈電容,從而使該天線具有寬頻帶、低剖麵特性.採用倣真軟件Ansoft HFSS進行倣真和優化,優化結果錶明:該天線工作頻率為824~960 MHz/1710~2690 MHz(駐波比小于等于2).根據倣真模型製作瞭一款天線,實測駐波帶寬可達811~1050 MHz/1580~2660 MHz,且在水平麵內輻射全嚮方嚮圖.該天線在限製呎吋的情況下有效地展寬瞭帶寬.
설계료일충소형화쌍빈천선.통과재단겁자천선상인입기생우합적방법,즉재단겁자정부인입우합가재판,기보증료단겁자천선적복사전향성우감소료전소천선적분포전용,종이사해천선구유관빈대、저부면특성.채용방진연건Ansoft HFSS진행방진화우화,우화결과표명:해천선공작빈솔위824~960 MHz/1710~2690 MHz(주파비소우등우2).근거방진모형제작료일관천선,실측주파대관가체811~1050 MHz/1580~2660 MHz,차재수평면내복사전향방향도.해천선재한제척촌적정황하유효지전관료대관.
@@@@A miniaturized dual-band antenna is proposed. By adding coupling-load electric board,the antenna can achieve broad bandwidth with a low profile.Ansoft HFSS is used to simulate and design a low-profile anten-na based on coupling-load which VSWR is less than 2 in the 824~960 MHz and 1710~2 690 MHz. Finally, an antenna is fabricated based on the simulation model. The measured VSWR is less than 2 in 811~1 050 MHz and 1 580~2 660 MHz,and the horizontal radiation pattern is omnidirectional. The antenna has a broad band-width with a restricted size.
