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HAM Radio 1
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1983-10-06
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57 lines
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
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