Skip to main content
. Author manuscript; available in PMC: 2007 Aug 8.
Published in final edited form as: Magn Reson Med. 2001 Apr;45(4):673–683. doi: 10.1002/mrm.1090

FIG. 5.

FIG. 5

The demonstration of the physical principle of the decoupling between the parallel transmission lines caused by field cancellations. Parts 1 and 2 show a pair of λ/4 transmission line resonators terminated with either a short or open circuit. If incident current is a, the standing wave on the strip is decomposed into a forward current a and a reflection current −a. The transverse magnetic fields Bt generated by a and −a induce coupling currents c and −c in the adjacent strips, which cancel each other, resulting in no coupling between the two strips. Part 3 shows a pair of λ/2 transmission lines with matched loads. The increasing Bt and decreasing Bt generate coupling currents c and −c, which also cancel each other, so there is no coupling between the two λ/2-matched transmission lines either.