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(1) (2) (3) 0 T/4 T/2 3T/4 T -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1 (1) (2) (3) T/3 2T/30 t B 1 B 2 B 3 (1) (2) (3) 0 T/4 T/2 3T/4 T -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1 B 1 B 2 B 3 (1) (2) (3) B 3 B 23 =1/2.B 1 B 2 =B 3 = 1/2.B 1 B 1 B 2 B 3 (1) (2) (3) B 0 B 1 B 2 B 3 (1) (2) (3) B 3 B 13 B 1 0 T/4 T/2 3T/4 T -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1 B 1 B 2 B 3 (1) (2) (3) B 0 B 3 B 13 B 1 B 1 B 2 B 3 (1) (2) (3) B 0 B 2 B 12 B 1 0 T/4 T/2 3T/4 T -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1 B 1 B 2 B 3 (1) (2) (3) B 0