The Design of 5.7GHz Power and Low Noise Amplifierand the Research of MMIC Electromagnetic Analysis

• Main Authors: Ray-Jay Chiu, 邱瑞杰
• Other Authors: Mau-Phon Houng
• Format: Others
• Language: en_US
• Published: 2002
• Online Access: http://ndltd.ncl.edu.tw/handle/34516103094736796281

碩士 === 國立成功大學 === 微電子工程研究所碩博士班 === 90 === 　　In this thesis we design key devices of 5.7GHz ISM band. We use the GaAs transistor to fabricate high frequency devices and support suitable characters in our operation frequency. The devices that we research are the most important devices in RF frond end, low noise amplifier and power amplifier. 　　Low noise amplifier (LNA) is design to amplify signal of RF frond end and noise figure of the amplifier will decide sensitivity of receiver system. In our design, we use transistor TC2281 of Transcominc to realize LNA by using two-stage series structure. Our design flow of LNA has some different to general LNA design flow. We use a noise model to exactly match noise figure in our operation frequency. By this way, we can match more frequency points to low noise figure and accomplish the goal of wider frequency. 　　Power amplifier provides output power for RF transceiver. We use Load line theory to find optimize output resistor and accomplish our output matching. In our design flow, we take output return loss and output power into consideration at the same time. Finally, we realize our MMIC design by GCS HBT fabrication. Generally speaking, thought there had some vibration in GCS fabrication, our central frequency is still work. So this MMIC design is successful. 　　Besides, we also provide the important technology, electromagnetic analysis, of MMIC. Due to that there seldom has a single paper or a signal book dedicated to discussing this subject. Therefore I share some main ideals and skill about MMIC design that I had learned and hope that these ideals will be useful for other students to study research of MMIC in the future.