| An Effective Method for Suppressing Second-Order Beams of 2D Edge Slot Phased Arrays |
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Jong-Kuk Park1, Hyung-Gi Na1, Chan-Hong Kim2, Dong-Kook Lee2 |
1LIG Nexl RF&Microwave Research Center
2Agency for Defense Development |
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| Abstract |
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An effective method is proposed to suppress the second-order beams(SOBs) that result from the cross-polarized fields of 2D edge slot arrays. By rearranging the conventional sequence of stacking waveguides, the SOBs are shown to be considerably reduced and the 9 dB suppression is obtained. The optimal sequence is obtained from the genetic and exhaustive searches and its effects are verified using near-field measurements as well as theoretical estimation. Since the proposed method requires no additional polarizing structures such as baffles, it is very easy and cost-effective to implement. |
| Key words:
Edge Slot Phased Array, Second-Order Beam(SOB), Genetic Algorithm |
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