On Friday, December 14, 2012 5:37:50 AM UTC-7, Doug White wrote:

Geo wrote in news
http://www.polarinstruments.com/support/cits/AP124.html

Highly unlikely in this case. Transmission line test structures
are through lines, not open ended stubs. I think it's an antenna
of some sort. Doug White

I'm the person who posted the picture, and I should have mentioned
that it's a PC motherboard, MSI brand, model Z68A-G43(G3). It has
no wireless built into it.

I once found an antenna inside a Panasonic-made CRT monitor,
around the flyback. It was 1-2 pieces of circuit board material,
each about 3" long and 1/2" wide. In the schematic, it was
connected to a flyback winding that went nowhere else. Apparently
the antenna put out a signal to counteract interference generated
by the flyback.
transformer.