Review Article
Comparative Study of Antenna Designs for RF Energy Harvesting
Table 1
Various antenna shapes and size reduction.
| | Figure | Antenna shape | Freq. | Substrate | Size reduction
(%) |
| | 3(a) | Circular patch with slots placed on the diameter | 2.45 GHz | FR-4 substrate ( = 4.4) | 12 | | 3(b) | Square patch with cross-shaped slot etched on its surface | 2.45 GHz | Two Arlon A25N substrates separated by ROHACELL 51 foam layer | 32.5 | | 3(c) | Forty slits on the perimeter of a square patch, ten on each side | 2.36 GHz | Taconic, TLY-5 laminate ( = 2.21) | 48 | | 3(d) | Square patch with two orthogonal pairs of irregular, unsymmetrical slits | GPS design frequency () | RT/Duroid 6010 LM substrate ( = 10.2) | 40 | | 3(e) | Square patch with interconnection of four corner patches alternating with four strips and a fifth central patch | 5.85 GHz | RT/Duroid 5870 substrate ( = 2.33) | 60 |
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