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High linearity smart HBT power amplifiers for CDMA/WCDMA application
High linearity smart HBT power amplifiers for CDMA/WCDMA application
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机译:适用于CDMA / WCDMA应用的高线性度智能HBT功率放大器
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摘要
A power amplifier includes larger size transistors to provide higher power gain at lower frequencies. Transistors of transistor unit cells include a horseshoe-shaped emitter and a strip-shaped base to increase gain. Transistors are combined at a first level to form transistor arrays, which are combined with bonding wires at a second level to an output micro strip transmission line. A Vbe referenced bias circuit may include a smart function to lower quiescent current.
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