Design and Fabrication of 2.4~2.5 GHz Power Amplifier
| Autor: | Sheng-Bin Chen, 陳勝斌 |
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| Rok vydání: | 2004 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 92 This thesis presents the design and implementation of 2.4~2.5 GHz power amplifier. In the communication system, power amplifiers are the key components at the transmitting end. Due to high data rate requirement, many Bluetooth wireless applications have been proposed and developed. Hybrid MIC (Microwave Integrated Circuit) and microstrip-line configuration are employed in this design. Matching networks are realized on the alumina substrates. The power amplifier was developed using 2.4 mm GaAs pHEMT device. The design employed the internally matched achieve optimum power match. We utilized Cripps’s load-line theory and load-pull measurement result to predict optimum output impedance respectively, and compared their measurement results. The complete amplifier was mounted on a CuW carrier. By using load-line power model, it delivers 28.8dBm (0.8Watt) of output power, with 18dB power gain and 19% power-added efficiency. It’s input and output return-loss are lower than –12dB and –18dB, respectively. By using load-pull power model, it delivers 30.1dBm (1 Watt) of output power, with 17dB power gain and 20% power-added efficiency. Its input and output return-loss are lower than –20dB and –18dB, respectively. These power amplifiers are intended to be used in the transmitter for Bluetooth wireless communication systems. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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