Antenna II: Optimization results
| Target operating conditions Ft | Gradient-Based Optimization (5) | Iterative Correction Scheme (7)b | |||
|---|---|---|---|---|---|
| f0 [GHz] | εr | Average realized gain* | Optimization costa | Average realized gain* | Optimization costa |
| 4.2 | 2.5 | 6.4 | 11 | 6.4 | 3c |
| 2.45 | 3.2 | 7.0 | 6 | 7.0 | 3c |
| 5.0 | 3.2 | 6.3 | 7 | 6.4 | 3c |
| 3.8 | 3.5 | 5.6 | 11 | 6.1 | 3c |
| 3.8 | 4.1 | 5.5 | 11 | 5.9 | 3c |
| 3.0 | 4.4 | 5.5 | 9 | 5.5 | 3c |
| Target operating conditions | Gradient-Based Optimization (5) | Iterative Correction Scheme (7)b | |||
|---|---|---|---|---|---|
| Average realized gain* | Optimization costa | Average realized | Optimization costa | ||
| 4.2 | 2.5 | 6.4 | 11 | 6.4 | 3c |
| 2.45 | 3.2 | 7.0 | 6 | 7.0 | 3c |
| 5.0 | 3.2 | 6.3 | 7 | 6.4 | 3c |
| 3.8 | 3.5 | 5.6 | 11 | 6.1 | 3c |
| 3.8 | 4.1 | 5.5 | 11 | 5.9 | 3c |
| 3.0 | 4.4 | 5.5 | 9 | 5.5 | 3c |
Notes:
*Average realized gain within the fractional bandwidth of interest (here, 8%). aThe cost in terms of the number of EM simulations required by the optimization process. bThe scheme complemented by gradient search according to (5). cCost of the iterative correction scheme (7). The average cost of the follow-up gradient search is less than four EM simulations
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