mr02ae~1.s2p

用matlab计算零点

! Motorola RF High Power Semiconductors
! MRF275L
! 28 V, 500 MHz 100 W N-Channel Broadband RF Power MOSFET
! Vds = 12.5 V  Id = 4.5 A
! Common Source S-Parameters                            September 1998
# MHz  S  MA  R  50
!  f        S11             S21             S12             S22 
! MHz   Mag     Angle   Mag     Angle   Mag     Angle   Mag     Angle
 30	0.936	-176	6.22	87	0.010	21	0.944	-179
 40	0.938	-178	4.28	87	0.010	24	0.865	-177
 50	0.937	-178	3.65	83	0.010	29	0.922	179
 60	0.937	-179	2.99	83	0.011	34	0.920	179
 70	0.938	-179	2.54	81	0.011	39	0.917	179
 80	0.938	-179	2.18	80	0.012	42	0.913	179
 90	0.939	-180	1.94	78	0.012	44	0.909	180
 100	0.939	-180	1.77	77	0.013	47	0.913	-180
 110	0.939	180	1.57	77	0.015	50	0.916	-179
 120	0.940	180	1.45	74	0.015	54	0.914	179
 130	0.940	179	1.34	75	0.016	57	0.935	180
 140	0.940	179	1.26	72	0.016	58	0.943	180
 150	0.940	179	1.19	71	0.017	57	0.951	178
 160    0.941   179     1.09    70      0.019   58      0.943   179
 170    0.941   179     1.01    69      0.019   62      0.898   180
 180    0.941   179     0.956   68      0.021   64      0.948   179
 190    0.941   178     0.912   67      0.022   65      0.957   180
 200    0.942   178     0.860   65      0.022   65      0.941   178
 210    0.942   178     0.816   64      0.023   65      0.931   178
 220    0.943   178     0.779   63      0.025   66      0.922   178
 230    0.943   177     0.717   60      0.027   67      0.965   177
 240    0.943   177     0.709   61      0.026   68      0.927   176
 250    0.944   177     0.674   60      0.026   70      0.924   178
 260    0.944   177     0.645   58      0.028   69      0.930   179
 270    0.944   177     0.627   57      0.030   70      0.933   178
 280    0.945   176     0.608   58      0.032   70      0.940   177
 290    0.946   176     0.580   54      0.031   71      0.889   175
 300    0.946   176     0.569   56      0.033   71      0.941   176
 310    0.946   176     0.539   55      0.033   72      0.953   178
 320    0.947   175     0.512   54      0.035   71      0.952   177
 330    0.948   175     0.483   51      0.037   72      0.927   176
 340    0.947   175     0.477   52      0.038   72      0.921   176
 350    0.947   175     0.466   51      0.039   75      0.929   178
 360    0.947   175     0.459   51      0.040   73      0.963   177
 370    0.948   174     0.441   50      0.043   71      0.968   175
 380    0.949   174     0.428   49      0.044   72      0.937   175
 390    0.949   174     0.417   49      0.045   74      0.907   176
 400    0.949   174     0.409   47      0.044   77      0.912   177
 410    0.950   173     0.390   46      0.046   74      0.962   175
 420    0.950   173     0.377   45      0.047   71      0.971   174
 430    0.950   173     0.369   45      0.050   72      0.948   176
 440    0.951   173     0.368   47      0.052   74      0.953   176
 450    0.951   172     0.371   42      0.053   76      0.943   175
 460    0.952   172     0.347   44      0.053   72      0.965   172
 470    0.952   172     0.331   43      0.053   71      0.933   173
 480    0.953   172     0.323   43      0.056   71      0.936   173
 490    0.953   171     0.317   41      0.059   72      0.965   173
 500    0.954   171     0.306   41      0.061   74      0.963   173
 600    0.957   168     0.267   35      0.069   77      0.941   171
 700    0.965   165     0.224   35      0.090   70      0.958   169
 800    0.967   160     0.219   32      0.099   67      0.937   164
 900    0.980   156     0.214   33      0.114   69      0.943   164
 1000   0.986   151     0.218   34      0.146   67      0.955   162
!
!