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How do you make RF circuit boards?
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October 28th 07, 02:25 PM posted to rec.radio.amateur.homebrew
Scott
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First recorded activity by RadioBanter: Jul 2006
Posts: 162
How do you make RF circuit boards?
If you know the Er (dielectric constant), and the thickness if the
substrate, here is a nice website to calculate microstrip impedance...
http://www.microwaves101.com/encyclopedia/calmstrip.cfm
FR is basically just G-10 but fire retardant. G-10 is generally
considered OK up to about 1 GHz. Duroid has a higher Er and thus
thinner boards can be used and this will make a 50 Ohm line narrower and
reduce the line's radiation.
Scott
N0EDV
wrote:
Sometimes, at work, I need to make, or have made, an RF PCB board to
test an RF part. For example, a surface mount 2-way power divider, up
to say 4 GHz. We have regular g10? copper clad, a PCB millimg machine.
Is a 50 ohms trace about .1 in wide in this material? What is
advantage of FR and Duriod? Is TXLINE a good program to determine
trace widths? Any good books on RF boards?
Any tips would be very appriciated.
--
Scott
http://corbenflyer.tripod.com/
Gotta Fly or Gonna Die
Building RV-4 (Super Slow Build Version)
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