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Parallel-Combined Microwave Power Amplifier
Raja Mahmud Adnan and M. Zamri Mustafa

This project employs microstrip design principles and technology. A single amplifier stage is designed using the AT-41435 npn bipolar transistor, which is specifically built for microwave applications. Optimum transducer power gain is achieved at 2.0 GHz (the operating frequency) by designing single-stub matching networks for the input and output ports of the single amplifier stage. Two such stages are paralleled. A hybrid power coupler is used to distribute an equal amount of power to each amplifier stage. Another hybrid power coupler is used to combine the amplifier power from each stage at the output port.  

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