• 作者： 江簡富
• 作者服務機構： 國立中興大學電機工程學系
• 中文摘要： 分析具多層複材接地面的矩形單片輻射器之輻射特性，發現輸入阻抗的頻寬可藉由增加複材接地面的厚度或削減基板的厚度來提高。此一效應可能不適合某些應用，可在基板和複材接地面交界處置入另一矩形片來減低此種效應。首先推導一積分方程式，以兩個矩形片上的表面電流為未知數，再用Galerkin法解此積分方程式得表面電流分佈。結果顯示底板可以有效地屏蔽從頂板滲入複材接地面的電磁場。輸入阻抗及輻射場型則與具有理想導體接地面的輻射器相接近。
• 英文摘要： The analysis of a single patch on a substrate with a laminated composite ground plane shows thatthe bandwidth of the input impedance can be increased by increasing the thickness of the compositeground or by reducing the thickness of the substrate. This advantage may not be desired for certainapplications; hence, a bottom patch at the interface of the substrate and the composite is proposed toreduce such effects. An integral equation is derived in terms of the surface current on both patches,and Galerkin's method is applied to solve the integral equation for the current distribution. Results indicatethat the bottom patch effectively prevent the fields under the top patch from leaking into the compositeground. Both the input impedance and the radiation pattern are close to those with a perfect conductorground plane.
• 中文關鍵字： patch radiator; microstrip antenna; laminated ground plane; input impedance; radiation pattern
• 英文關鍵字： --