Thanks a lot for the
information your provided.
only have a couple of DUTs to measure. I think
it may be very difficult to solder a short
section of small semi-rigid coax to the board
for measurement, since our DUTs are so miniature
that it may not have enough space for soldering.
The distance between two adjacent ports is about
36mil=0.9mm on the same side (as indicated in
the picture above), and the distance between
adjacent port is about 164mil=4.2mm on two
adjacent sides, which is the same as the DUT's
For the test fixture in your
reply, it might be not proper for our
measurement for the same reason that our DUT is
too miniature. I checked the specifications of
this test fixture. It requires that minimum
length of DUT is 9mm and minimum width of DUT is
What do you think of this? Or
could you please offer some suggestions? Thank
you so much!
If you only have a couple
DUTs to measure, then you can probably
solder a short section of small semi-rigid
coax to the board that has an SMA on the
other end. I've had great success with that
up into the 6 GHz region (could probably go
higher, butI've never needed to).
measuring a large number of DUTs, a fixture
will be necessary. I've never used one
myself, but I see that a company called
Gigalane has a productio quality fixture for
measuring your type of PCB.