模式轉換器及具有此模式轉換器之微波旋轉接頭Mode Converer and Microwave Rotary Joint with the Mode Converter

專利類型

發明

專利國別 (專利申請國家)

美國

專利申請案號

12/468,332

專利證號

US 7,973,613 B2

專利獲證名稱

模式轉換器及具有此模式轉換器之微波旋轉接頭Mode Converer and Microwave Rotary Joint with the Mode Converter

專利所屬機關 (申請機關)

國立清華大學

獲證日期

2011/07/05

技術說明

這個發明分析微波旋轉接頭的接觸面特性. 結果顯示TE01波導模式最適合作為旋轉接頭的操作模式. 一個微波旋轉接頭包括兩個TE01模式轉換器, 並用軸承把他們接起來. 我們設計, 製作,並實測一個毫米波旋轉接頭. 背對背穿透量測結果與理論預測非常吻合. 最佳穿透率97%, 3-dB頻寬8.5 GHz 在中心頻率35.0 GHz. 冷測結果顯示它可以自由旋轉. 熱測量測實驗也進行, 結果顯示此一旋轉接頭可以操作到210 Watts 在負荷為18%時. This work analyzes the effect of the discontinuity in the interface of a rotary joint for several waveguide modes. Results indicate that the transmission of the TE01 mode is independent of the geometry of the joint, and thus is ideal for such application. A rotary joint consisting of two identical TE01 mode clasping each other by a bearing is designed, fabricated, and tested. Back-to-back transmission measurements exhibit an excellent agreement to the results of computer simulations. The measured optimum transmission is 97% with a 3-dB bandwidth of 8.5 GHz centered at 35.0 GHz. The cold measurement shows that the results are independent of the rotary angle. A hot-test experiment is conducted. The just developed rotary joint can operate up to a peak input power of 210 Watts with a duty of 18%.

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