What is your opinion in using a (inductive) boost converter oscillating at 180kHz to supply a UHF transmitter module in very close proximity?
How much do you think the EM field from the converter would interfere with the transmitter?
The line output ripple i don't think would cause any significant problems, since the transmitter works nicely even with a noisy PSU. I'm more concerned about the interacting EM fields.
The alternative would be to use a higher voltage battery. What would you recommend in this scenario?
I reasoned that since they are so close together (one besides the other), the oscilating inductor on the converter might somehow affect the inductors on the transmitter, causing a detuning or something. Maybe attenuating the signal.
The converter would be run at 50mA which i'm guessing it's not a negligible amount that the inductor EM field must handle.
But yes, we're talking orders of magnitude in frequency difference.
Is your transmitter a free running oscillator? I think not, if it is it would never have got type approval.
causing a detuning or something. Maybe attenuating the signal.
No all that could possibly happen is to introduce some frequency modulation on the carrier. The mechanism for that would not be electro-magnetic. And as I said that would only apply to a free running oscillator which you should not have.
By free running i presume you mean LC resonator circuit. I't snot, it's a crystal transmitter.
Yes, i was also thinking along the lines of modulating the carrier. But that would also not be a problem since my modulating signal is also far below the 180kHz. I think i'm good to go then. Thanks.
Hi,
UHF Transmitter, put it in a metal (Ferrous) enclosure.
SMPS put it in a metal (ferrous) enclosure.
They don't have to be sophisticated, just some thin metal bent over each and grounded to chassis.
