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- From this, it appears obvious that the first two and the
- very last element could be left out. In doing so, the optimi-
- zation terminates at the following point:
-
- ELEMENT PARAMETER GRADIENT
- TYPE NUM NUM VALUE
- 1 CRP 3 2 14.006 55.062
- 2 CPP 5 1 8.161 -4.104
- 3 INS 6 1 1113.59 -0.177
-
- ITERATION #18 ERROR = 477.6
-
- Although this is not much of an improvement in the perfor-
- mance, we have at least desensitized these elements consider-
- ably. We now observe the following sensitivities:
-
- ELEMENT PARAMETER GRADIENT
- TYPE NUM NUM VALUE
- 1 INP 1 1 177 -2.555
- 2 INS 2 1 462 3.054
- 3 CRP 3 2 14.006 39.122
- 4 CPP 5 1 8.365 -58.399
- 5 INS 6 1 1113.59 -0.262
- 6 INP 7 1 177 -1.372
-
- ITERATION #0 ERROR = 477.6
-
- At this point, we can include all of the above elements
- for optimization. Some time later, we have the following re-
- sults:
-
- ELEMENT PARAMETER GRADIENT
- TYPE NUM NUM VALUE
- 1 INP 1 1 215.637 -0.213
- 2 INS 2 1 411.581 0.074
- 3 CRP 3 2 15.161 -1.186
- 4 CPP 5 1 8.256 -0.362
- 5 INS 6 1 1110.551 -0.07
- 6 INP 7 1 195.62 -0.13
-
- ITERATION #457 ERROR = 348.2
-
- Although this is not a dramatic improvement in the error
- function, we note that we now have the following performance:
-
- FREQ S11 S21 S12 S22
- in GHz in dB in dB in dB in dB
- 0.05 -11.87 24.72 -37.68 -7.73
- 0.0505 -17.45 25.45 -107.3 -14.88
- 0.051 -12 25.05 -37.45 -9.31
-
-
-
-
-
- - 33 -