Research Article
Hybrid Robust Optimization for the Design of a Smartphone Metal Frame Antenna
Table 4
OA (9, 4, 3, and 0.2) matrix for the optimized antenna.
| Experiment | Design variable (mm) | | l1 | l2 | h1 |
| 1 | 2.6 | 48 | 4 | 6.7 | 2 | 2.6 | 48.2 | 4.2 | 6.9 | 3 | 2.6 | 48.4 | 4.4 | 7.1 | 4 | 2.8 | 48 | 4.2 | 7.1 | 5 | 2.8 | 48.2 | 4.4 | 6.7 | 6 | 2.8 | 48.4 | 4 | 6.9 | 7 | 3 | 48 | 4.4 | 6.9 | 8 | 3 | 48.2 | 4 | 7.1 | 9 | 3 | 48.4 | 4.2 | 6.7 |
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