Design of RF CMOS Power Amplifier for Wireless Sensor Network
| Autor: | Chih Yuan Liu, 劉致遠 |
|---|---|
| Rok vydání: | 2007 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 95 In a wireless sensor network system, the transmit power is comparable to the input power. Linear power amplifiers, which require lower drive power as compared to its switching counterparts, now become a viable candidate. This thesis presents a 2.4 GHz Class AB power amplifier suitable for wireless sensor network applications. To enlarge the battery life of sensor node in this system, power amplifier is designed for high efficiency. The power amplifier was fabricated in TSMC 0.18μm 1P6M process. When operating from a 1.0 V supply, the PA delivers an output power of 2.4dBm with a PAE of 13.5 %. Measurement results show a maximum PAE of 16 % and a maximum gain of 12.4 dB. The output swing is limited with lower supply voltage. To improve the efficiency, we modify the circuit topology and the supply voltage is 1.2V. The simulation result shows the output power is 8dBm with the same input power. The PAE can achieve 30%. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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