Research Article
Circularly Polarized S Band Dual Frequency Square Patch Antenna Using Glass Microfiber Reinforced PTFE Composite
Table 2
Dielectric properties of substrate materials.
| | Substrate material | Relative permittivity
| Dielectric loss tangent | Relative permeability |
| | Glass microfiber reinforced PTFE | 2.33 | 00.0012 | 1 | | Epoxy resin-fibre glass | 4.50 | 000.02 | 1 | | PTFE/woven-glass composite | 2.20 | 0.0009 | 1 | | Taconic | 06.50 | 0.0028 | 1 | | PTFE ceramic | 10.20 | 0.0023 | 1 | | Neltec | 2.08 | 0.0006 | 1 |
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