- freely available
Sensors 2019, 19(18), 3911; https://doi.org/10.3390/s19183911
2. Antenna Array Design
3. Fabrication and Measurement
- Two of the same 141 mm × 141 mm sheets of Kapton film, named P-I and P-II, were chosen as illustrated in Figure 5a.
- Dividing Sheet P-I into sections AA', BB', CC', DD', EE', FF’, and GG’, as shown in Figure 5b-left. Subdivisions of P-II into JJ', KK', LL’, MM', NN', OO', and PP’ as shown in Figure 5b-right. P-Ⅰ sheet is folded along AA’ and unfolded across AA', it was divided into two right triangles, as shown in Figure 5c.
- Folding along CC', then BB', FF', and EE', consecutively, produced hexagonal geometry with 4 shorter sides (AB, AE, A'B', A'E'), as shown in Figure 5d–g.
- P-Ⅰ was separated into 3 segments comprising, as shown in Figure 5h.
then folding along SS', the lower pentagonal section ABS'SE was folded in the direction of the middle square section TT'S'S, thus the sheet was converted into pentagonal geometry.
- Upper pentagonal section (A'B'T'TE'),
- Middle square segment (TT'S'S),
- Lower pentagonal section (ABS'SE)
- Folding EABS' along TS' in the direction of ESS', as shown in Figure 5i.
- Folding section TE'A'B'T' downward along TT', as shown in Figure 5j.
- Folding section TE'A'B' along TB' in the direction of TTB', as shown in Figure 5k.
Conflicts of Interest
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