新式積體化平面倒F天線結構與微機電曲折式單極化天線設計

Abstract

本論文討論兩種用於無線區域網路通訊上之小型化天線，其製程不但容易與其他元件整合，同時也能方便在單獨製作上量產。 第一種形式為積體化平面倒F(PIFA)天線，我們提出一簡單的天線架構，在FR4基材上嵌入一平面倒F天線，在體積條件受到限制的情況下， 經由Ansoft HFSS模擬探討其饋入點位置及短路點位置對於此天線頻寬以及阻抗匹配上的影響，再利用簡單PCB製程上完成一個可以大量生產同時也能簡單與其他元件整合之積體化天線。 另外，利用微機電技術，我們提出了曲折式單極化(meander monopole)的天線架構，透過模擬討論各項參數所造成之影響與變化，製作一平面式以及一立體式之曲折式單極化天線；其製程易與一般通訊系統CMOS製程進行整合，在個別生產上也具有相當優勢。

Two compact antennas suitable for wireless LAN are described in this thesis. Both of them are integrated with other component simply, also can batch fabrication. A chip planar inverted F antenna structure is discussed. The chip PIFA built in FR4 substrate. The dimension of antenna is limited. Utilized simulation software, named Ansoft HFSS, the effects of bandwidth and impedance because different feed-point and different shorten-cylinder position are described. The chip PIFA has the advantage of effortless integrated with other device and mass of fabrication. Analysis of microelectromechanical systems (MEMS) technology, the meander monopole is presented. Simulations about various parameters are tested. A planar MEMS meander monopole antenna and a 3D meander monopole antenna, can integrate with CMOS process and batch fabrication are fabricated.