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. 2023 Jan 8;14(1):163. doi: 10.3390/mi14010163

Figure 11.

Figure 11

Total gain for the presented four antenna structures by selecting the substrate FR4. (a) 4.54 dB for the CPIO and SWT (b) 3.51 dB for the CPIO and SWOT (c) 2.39 dB for the DCPIO and SWT (d) 2.38 dB for the DCPIO and SWOT.