On 2016-03-07, David Pickett wrote:
Sorry, I should shave before writing. I meant magnetron, not
klystron...
Magnetrons are self-oscillating sources of microwave radiation. Of the
fringed, multiplied, physical, secondary oscillator kind. Klystrons on
the other hand are linear electron beam devices which are used as
high gain, high power amplifiers.
I don't mean to be rude, but how on earth do you mix those tubes
togerher? To me they seem totally different, both in construction, and
in their actual use.
I havent looked in detail, but they are, as I expected, high Q
devices, which is a much better way of putting what I was trying to
say earlier in a rather fumbly way.
The Magnetron is a very high Q device, by design. It's engineered to be
a primary oscillator in the microwave range. At the same time, the
Klystron cannot be analyzed via LTI-minded Q math. It does have its
resonances, and its intrinsic bandwidth, but the reason it's used in
e.g. radar systems is precisely it's capability of amplifying, via
somewhat nonlinear processes within the electron beam, a broader
frequency range than any tube thingy which came before it.
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