#17 abnormal termination for simple 4-port

[Tadashi ARAI]

place a differential tline with 4 ports connected to each
end.
simulations of s11,s21,s31,s41 for 0.01-10GHz will end
up with abnormal termination.
diff-pair is 1000mm long of ze=50/zo=100ohms.
ver.3.1.3 running on windows2000pro.