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Unique Gate Drive Applications Enable Rapidly Switching On/Off for Your High Power Amplifier
Question: Can you switch on or off your RF source within 200 ns?
Answer: In pulsed radar applications, rapid turn on/off of the high power amplifier (HPA) is required during the transition from transmit to receive operation. Typical transition time objectives can be less than 1 µs. Historically this has been implemented through drain control. Drain control necessitates switching large currents at voltages ranging from 28 V to 50 V. This is practical with known switching power techniques, but involves additional physical size and circuit complications. In modern phased array antenna developments, while demanding the lowest SWaP possible, it is desirable to eliminate the complications associated with drain switching on HPAs. ....

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