CW and Pulsed mode operation of RF devices
时间：04-07
整理：3721RD
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Hello,
Can a device that works well for a CW mode application, be assumed to deliver sufficiently well if not as well in a pulsed mode application?
If not, what are the factors to determine which device can be used safely in the pulsed mode.
The reason for the question is that a lot of datasheets give data only w.r.t. CW application whereas I have seen people use the same deivces for pulsed application without any reservations. So is it safe to assume that a device that is working in CW mode will automatically perform as well or even better in the pulsed mode?
Thanks.
Can a device that works well for a CW mode application, be assumed to deliver sufficiently well if not as well in a pulsed mode application?
If not, what are the factors to determine which device can be used safely in the pulsed mode.
The reason for the question is that a lot of datasheets give data only w.r.t. CW application whereas I have seen people use the same deivces for pulsed application without any reservations. So is it safe to assume that a device that is working in CW mode will automatically perform as well or even better in the pulsed mode?
Thanks.
The RF side will work OK. One problem you may find is that the bias circuits have a time constant, before they settle down, so if you pulse the circuit, you could end up with the bias bouncing about giving a degree of low frequency amplitude modulation to your RF envelope.
Frank