應用於毫米波發射器之29GHz功率放大器和相移器設計

Abstract

本論文為用於衛星通訊系統元件之研究與設計。隨著第五代通訊（5G mobile network）的來臨，衛星通訊持續朝向更大的頻寬及更高的傳輸速率發展。現今衛星通訊的主要使用頻段為19 GHz及29 GHz，而本論文將以29 GHz頻段的元件做為主要的內容。 本論文分為二個部分，第一部分為威爾金森分波器的介紹與研究。使用增強型（E-mode）0.15-μm 砷化鎵（GaAs）製程，設計兩顆分別為19 GHz以及29 GHz分波器。探討實行封裝及設計電路板，將電路模組化後所產生的問題，如：鎊線（wire bonding）。比較模組化前後電路特性的差距，討論並加以改良，以利於下一次的設計。 第二部分提出兩顆0.18-μm CMOS製程下29 GHz整合電路，一顆是功率放大器整合其直流電源，將原本三個0.9 V的閘極電壓整合為一個並觀測其結果，此目的是為了之後，將閘極電壓以及汲極電壓進行整合，使電路最後僅需一個輸入電壓。另一顆為相移器和功率放大器的整合電路，使用於衛星通訊系統發射器的部分。

This thesis is a research and design for satellite communication. With the coming of the fifth generation mobile communication (5G), the satellite communication continue working on bigger bandwidth and higher data rate. Nowadays, the satellite communication main frequency bands are 19 GHz and 29 GHz. The main content of this thesis focuses on 29 GHz components. This thesis is divided into two parts. The first part (Chapter 2) is about the introduction and research of wilkinson power divider. Fabricating in 0.15-μm enhancement mode (E-mode) GaAs PHEMT, design two separately power divider. One is 19 GHz, the other is 29GHz. Discussing the packaging in these chips, some problems with modularization are taken into considerations. For example, wire bonding effect. By comparing the performance before and after modularization, debugging and improvement the modules. In order to make the next time designing have better performance. The second part (Chapter 3) present two integration circuit at 29 GHz which is fabricated in 0.18-μm CMOS. One is a power amplifier combining the bias circuit. In order to combine all the input voltage, this time just combine the 3-stage gate voltage in to one. The other integration circuit is combine phase shifter and power amplifier. This circuit is designed for the satellite communication transmitting part.