臺灣博碩士論文加值系統

為了處理同軸線至輻射線的轉接,本研究特探討兩種結構,第
一種是同軸線探針有接到輻射線頂板的結構,第二種是同軸線的探針無接
到輻射線頂板的結構,對於這兩種結構,我們都先找出輻射線的格林函數,
再分別處理探針上的電流分佈,找出輻射線的輸入阻抗、反射損,另進行把
模擬結果與實驗比較,也相當符合,此外根據模擬結果,可以推測探針的長
度,是決定使用轉接頻率的主要因素,而使用較粗的探針則有助於頻寬的改
善。

Two types of "coaxial line-to-radial line
transitions" are investigated in detail. Both structures having
coaxial line probe to toughand not to tough the top of the
radial line are examined. For both types of transitions, we
first establish the Green's function of radial line, and then
compute the probe current distribution seperately to find out
the input impedance and return loss. Good agreement between the
experiment and simulation results is observed. The simulation
results imply that, the probe length is the major factor in
affecting the operating frequency of the transition. And the
transition bandwidth may be improved by the use of thicker
probe.