SGC Smartuner SG-211, Operating Manual

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SG-211 User’s Manual
© 2004 SGC Inc. Page 23
3.4.6 Loops
Loop antennas are balanced antennas. They are very
simple to feed from balanced feed line. Ideally, the SG-
211 will be at the loop feed point, but when it must be at
some distance from the feed point, balanced feedline will
tolerate the SWR better between the antenna and the SG-
211 than will coaxial cable. A loop is connected to the
SG-211 at the two RF Out connectors.
Loops can be
conveniently
arranged either
horizontally or
vertically. The
feeding
arrangement is the
same.
Loops can take on nearly
any closed shape such as a
square, rectangle, triangle, or
diamond shape and they can
be fed on the sides or in the
corners. The effect of
different configurations and
feed points is well documented in the many books on
antennas.
It is also possible to feed a loop from a coaxial cable by
connecting one side of the feed point to the center