共平面波導Ka頻段低雜訊與功率放大器之研製

Abstract

本論文研究Ka頻段低雜訊與功率放大器的製作，採用混成微波積體電路HMIC及共平面波導CPW結構，運用串聯開路支線與並聯短路支線做為匹配網路，應用於LMDS之28GHz的頻段。 文中說明LNA與PA的設計方法，並對雜訊指數與輸出功率做最佳的設計，製作出LNA的NF最低為1.44dB，增益27dB，PA輸出功率最大可達22.4dBm，PAE為20%。

This thesis presents the design and fabrication of Ka-band low noise and power amplifiers. HMIC (Hybrid Microwave Integrated Circuits) and CPW (Coplanar Waveguide) structures are used in this design. The amplifiers are matched with series open stub and shunt short stub. Working frequency is 28GHz and suitable for LMDS application. The method of designing LNA and PA is explained in this thesis. Noise figure and output power are designed optimally. Noise figure of the LNA is 1.5dB and gain of 27dB . Output power of the PA is achieved 22.4dBm with 20% PAE.