Hi Joe,

Thank you the info. Is it required to cross couple them, or can I use
one magnetron as a "master" that injects into 3 to 5 other "slave"
magnetrons? I will post the results of my effort. Again thanks.

Cheers,
Bert

On Jan 17, 12:24*am, **THE-RFI-EMI-GUY**
wrote:
Circulators are pretty pricy. You will need at least one to keep the
high power energy from each magnetron from getting back into the
injection source. I read somewhere that about 2% of the magnetron power
is required to injection lock. As far as phase, you will need a
mechanical or electrical means to adjust the phase of the legs of the
injection signals as well as a means to adjust the phase of the
magnetrons when combining them. Typically a peice of coax or waveguide
of some fraction of a wavelength as require IE; 1/4 wave = 90 degrees.
Coax has a velocity factor which makes it behave electrically longer
than it is physically.

I am guessing, but perhaps with proper coupling technique, you might get
the magnetrons to lock to each other coherently.





Bert wrote:
Show how much are circulators?. For the phase can I add an adjustable
delay?

Again Thanks,
Bert

On Jan 15, 11:07 pm, Erich wrote:

One microwave oven magnetron will get you pretty close to the legal
limit. *They can be injection locked together, but that usually requires
a circulator that can handle the necessary power (big $). *You also need
some way of adjusting the phase between the magnetrons so that the power
will add. *The adjustment can be tricky as they will tend to interact
even with the circulators.

73, Erich N6FD

Bert wrote:

Does anyone in the group know anything about magnetrons? I planning to
do some experiments in transmitting microwaves.

I would like to use standard magnetrons from a microwave oven and
believe I can beam further if operated at the same frequency and
with the outputs in phase. I have no idea on how to do this. Please
advise

Cheers,
Bert- Hide quoted text -

- Show quoted text -

--
Joe Leikhim K4SAT
"The RFI-EMI-GUY"©

"Treason doth never prosper: what's the reason?
For if it prosper, none dare call it treason."

"Follow The Money" *;-P- Hide quoted text -

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