High voltage, high frequency amplifier?

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Having a conversation with someone about an application that requires what seems to me to be an unlikely combination of requirements. If it's possible at all I suspect it would be rare and expensive - it requires a signal with a fundamental frequency around 200MHz, but with at least a squarish wave so a low GHz bandwidth - and a peak voltage of, wait for it - 200V. I'm no expert by any means, but this seems implausible. Or is there a commercially available module that would meet these requirements?

Ta.

[PA0PBZ]

Depends on what it is driving, 50 Ohm or 50K would make a big difference...

[T3sl4co1l]

Yeh... into what impedance?

High voltages are common in high speed optics and particle accelerators.  Such applications are usually more concerned about working at all, than cost or efficiency, so the solutions are usually brute-force, like ramming a high voltage pulse down a 50 ohm coax (200V into 50 ohms is 4A peak), or whatever impedance is necessary for the desired physical effect (usually the load is a small capacitance, so the rise time from a 50 ohm source is acceptable).

If brute force and off-the-shelf is acceptable, then any wideband 1kW amp will do.  I've probably seen Amplifier Research racks that can do that.

Tim

[dmills]

First thought is "Amplifier Research" may well have something off the shelf, 200V into 50R is less then a kW, so expensive, but somewhat doable.

Regards, Dan.

Edit, great minds and all that!

[David Hess]

Even oscilloscope vertical CRT amplifiers never reached that voltage level.  There was always a quest to improve CRT deflection sensitivity so that a lower voltage amplifier but higher frequency parts could be used.

Does the amplifier have to be linear?  The restricted operating requirements sound like a job for an untuned class-E design.